JP4438711B2 - Interphase reactor and three-phase multiple rectifier circuit - Google Patents

Description

  The present invention relates to three-phase multiple rectification.

  With the widespread use of inverter equipment, harmonics generated from rectifier loads tend to increase. In accordance with this, the amount of heat generated by the phase advance capacitor and the transformer of the power system is also increasing.

  In order to deal with such obstacles, specific consumer guidelines that are the total amount regulation at the receiving end are applied to consumers who receive power through the high voltage system. 12-phase rectification using a YY, Y-Δ transformer and two sets of rectifier circuits is recommended as a guideline for suppressing harmonics of specific customers. However, this approach increases the transformer size and costs.

  On the other hand, a method of reducing the power capacity of a transformer using a winding transformer and utilizing coupling between phases has been proposed, and is also introduced in Patent Documents 1 to 3 below.

JP 2000-358372 A German Patent Invention No. 3826524 JP 2002-10646 A Oguchi Kuniomi, Fukushima Kazuo, Kubota Junji “Characteristic Comparison of AC Side Reactor Duplex 12-Pulse Three-Phase Diode Rectifier Circuit”, IEEJ Semiconductor Power Conversion Research Materials, SPC-99-15 (December 1998) Kuniomi Oguchi, et al. “Dual reactor coupling of three-level voltage-type three-phase diode rectifier circuit”, IEEJ Semiconductor Power Conversion Study Materials, SPC-99-94 (October 1999) C. Niermann, "NEW RECTIFIER CIRCUITS WITH LOW MAINS POLLUTION AND ADDITIONAL LOW COST INVERTER FOR ENERGY RECOVERY", Proc. of Electromechanics and Power Electronics, pp1131-1136, 1989 M. Depenbrock and C. Niermann, "Netzfreundliche Gleichrichterschaltung mit netzseitiger Saugdrossel (NSD) Teil II: Eigenschaften" etz (Elektrotechnische Zeitschrift), Archiv Bd.11 (1989) H.10, S.317-321

  In view of such a background, the present case is a method for reducing the power capacity of the transformer by using the coupling between the phases, so that the capacity and the winding ratio can be reduced, and thus the miniaturization of the transformer is prevented and the efficiency is reduced. It aims at providing the technology to improve.

  The first aspect of the interphase reactor according to the present invention includes a first phase input end (11), a second phase input end (12), a third phase input end (13), a first and a second first phase. Phase output terminal (21, 31), first and second second phase output terminal (22, 32), first and second third phase output terminal (23, 33), first and second First phase main reactor (76, 77), first and second second phase main reactor (86, 87), first and second third phase main reactor (96, 97), first to second 4 first phase sub reactors (982, 892, 983, 893), first to fourth second phase sub reactors (782, 992, 783, 993), first to fourth third phase sub reactors ( 882, 792, 883, 793).

  The first first-phase main reactor (76), the first first-phase sub-reactor (982), and the second first-phase sub-reactor (892) are connected to the first-phase input end (11). The first and second phase output terminals (21) are connected in series.

  The second first phase main reactor (77), the third first phase sub reactor (983), and the fourth first phase sub reactor (893) are connected to the first phase input end (11). It is connected in series with the second first phase output terminal (31).

  The first second phase main reactor (86), the first second phase sub reactor (782), and the second second phase sub reactor (992) are connected to the second phase input terminal (12). The first and second phase output terminals (22) are connected in series.

  The second second phase main reactor (87), the third second phase sub reactor (783), and the fourth second phase sub reactor (993) are connected to the second phase input end (12). It is connected in series between the second second phase output terminal (32).

  The first third-phase main reactor (96), the first third-phase sub-reactor (882), and the second third-phase sub-reactor (792) are connected to the third-phase input end (13). Connected in series with the first third phase output terminal (23).

  The second third-phase main reactor (97), the third third-phase sub-reactor (883), and the fourth third-phase sub-reactor (793) are connected to the third-phase input end (13). The second and third phase output terminals (33) are connected in series.

  The first first phase main reactor (76), the second first phase main reactor (77), the first second phase sub reactor (782), and the third second phase sub reactor. A reactor (783), the second third-phase sub-reactor (792), and the fourth third-phase sub-reactor (793) are wound around the first core (51).

  The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the first The second phase input reactor (12) side of the second phase sub reactor, the second phase input end (12) side of the third second phase sub reactor, and the second third phase sub reactor. The first third-phase output end (23) side of the fourth third-phase sub-reactor has the same polarity as the second third-phase output end (33) side.

  The first second phase main reactor (86), the second second phase main reactor (87), the first third phase sub reactor (882), and the third third phase sub reactor. A reactor (883), the second first-phase sub-reactor (892), and the fourth first-phase sub-reactor (893) are wound around the second core (52).

  The second phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the first The third phase sub-reactor of the third phase input end (13) side, the third third phase sub reactor of the third phase input end (13) side, and the second first phase sub reactor of the second phase reactor. The first first-phase output end (21) side of the first-phase sub-reactor and the second first-phase output end (31) side of the fourth first-phase subreactor have the same polarity.

  The first third-phase main reactor (96), the second third-phase main reactor (97), the first first-phase sub-reactor (982), and the third first-phase sub-reactor A reactor (983), the second second-phase secondary reactor (992), and the fourth second-phase secondary reactor (993) are wound around a third core (53).

  The third phase input end (13) side of the first third phase main reactor, the second third phase output end (33) side of the second third phase main reactor, and the first The first phase input terminal (11) side of the first phase sub reactor, the first phase input end (11) side of the third first phase sub reactor, and the second second phase sub reactor The first second-phase output end (22) side of the second-phase sub-reactor and the second second-phase output end (32) side of the fourth second-phase subreactor have the same polarity.

  A second aspect of the interphase reactor according to the present invention is the first aspect of the interphase reactor, wherein the first first-phase main reactor (76) includes the first node (41) and the first first reactor. Connected between phase output terminals (21). The second first phase main reactor (77) is connected between the first node (41) and the second first phase output end (31). The first first-phase subreactor (98; 982) also serves as the third third-phase subreactor (983). The second first phase auxiliary reactor (89; 892) also serves as the fourth first phase auxiliary reactor (893). The second first phase sub reactor (89) and the first first phase sub reactor (98) are connected in series between the first node and the first phase input terminal (11).

  The first second-phase main reactor (86) is connected between a second node (42) and the first second-phase output terminal (22). The second second-phase main reactor (87) is connected between the second node (42) and the second second-phase output terminal (32). The first second phase auxiliary reactor (78; 782) also serves as the third second phase auxiliary reactor (783). The second second phase auxiliary reactor (99; 992) also serves as the fourth second phase auxiliary reactor (993). The second second phase sub reactor (99) and the first second phase sub reactor (78) are connected in series between the second node and the second phase input terminal (12).

  The first third-phase main reactor (96) is connected between a third node (43) and the first third-phase output terminal (23). The second third-phase main reactor (97) is connected between the third node (43) and the second third-phase output terminal (33). The first third phase auxiliary reactor (88; 882) also serves as the third third phase auxiliary reactor (883). The second third-phase secondary reactor (79; 792) also serves as the first third-phase secondary reactor (793). The second third phase sub reactor (79) and the first third phase sub reactor (88) are connected in series between the third node and the third phase input end (11).

  The third aspect and the fourth aspect of the interphase reactor according to the present invention are both the first aspect or the second aspect of the interphase reactor, and all the main reactors (76, 77, 86, 87, 96, 97) is the first winding number (W1), and all the sub reactors (782,783,792,793,892,893,882,883,982,983,992,993; 78,79) , 88, 89, 98, 99) are all wound with the second number of windings (W2).

  In the third aspect, the ratio of the second winding number to the first winding number is (2√3-3) / 3.

  In the fourth aspect, the ratio of the second winding number to the first winding number is tan (20 °) / √3.

In the fifth aspect and the sixth aspect of the interphase reactor according to the present invention, the first phase input terminal (11), the second phase input terminal (12), the third phase input terminal (13), First and second first phase output terminals (21, 31), first and second second phase output terminals (22, 32), and first and second third phase output terminals (23, 33) And first and second first phase main reactors (76, 77), first and second second phase main reactors (86, 87), first and second third phase main reactors (96, 97), a first phase sub reactor (98), a second phase sub reactor (78), and a third phase sub reactor (88).

  The first first-phase main reactor (76) and the first-phase auxiliary reactor (98) are between the first-phase input end (11) and the first first-phase output end (21). Connected in series.

  The first second phase main reactor (86) and the second phase sub reactor (78) are disposed between the second phase input end (12) and the first second phase output end (22). Connected in series.

  The first third-phase main reactor (96) and the third-phase auxiliary reactor (88) are between the third-phase input end (13) and the first third-phase output end (23). Connected in series.

  The second first phase main reactor (77) is connected between the first phase input end (11) and the second first phase output end (31).

  The second second phase main reactor (87) is connected between the second phase input end (12) and the second second phase output end (32).

  The second third-phase main reactor (97) is connected between the third-phase input terminal (13) and the second third-phase output terminal (32).

  The first first-phase main reactor (76), the second first-phase main reactor (77), and the second-phase auxiliary reactor (78) are wound around a first core (51). The

  The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the second The second-phase input end (12) side of the phase / sub reactor has the same polarity.

  The first second-phase main reactor (86), the second second-phase main reactor (87), and the third-phase sub-reactor (88) are wound around a second core (52). The

  The second phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the third The third phase input end (13) side of the phase / sub reactor has the same polarity.

  The first third-phase main reactor (96), the second third-phase main reactor (97), and the first-phase auxiliary reactor (98) are wound around a third core (53). The

  The third phase input end (13) side of the first third phase main reactor, the second third phase output end (33) side of the second third phase main reactor, and the first The first sub-reactor has the same polarity as that of the first first phase input end (11).

Then, with the second first phase main reactor (77), the second second-phase main reactor and (87), the second phase 3 main reactor (97) and the first winding are both In the number (W1), the first phase sub reactor (98), the second phase sub reactor (78), and the third phase sub reactor (88) are all the second winding number (W2). The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) all have a third winding number. In (W3), each is wound.

In the fifth aspect, the ratio of the first winding number, the second winding number, and the third winding number is √3: 1: 2.

In a sixth aspect, the ratio of the second winding number to the first winding number is 2 sin (40 °) / √3, and the ratio of the third winding number to the first winding number is 2 sin. (80 °) / √3.

A seventh aspect of the interphase reactor according to the present invention includes a first phase input end (11), a second phase input end (12), a third phase input end (13), and first and second first Phase output terminal (21, 31), first and second second phase output terminal (22, 32), first and second third phase output terminal (23, 33), first and second First phase main reactor (76, 77), first and second second phase main reactor (86, 87), first and second third phase main reactor (96, 97), first and second Two first phase sub reactors (984, 985), first and second second phase sub reactors (784, 785), and first and second third phase sub reactors (884, 885).

  The first first-phase main reactor (76) and the first first-phase auxiliary reactor (984) include the first-phase input terminal (11) and the first first-phase output terminal (21). Are connected in series.

  The second first phase main reactor (77) and the second first phase sub reactor (985) are connected to the first phase input end (11) and the second first phase output end (31). Are connected in series.

  The first second-phase main reactor (86) and the first second-phase sub-reactor (784) are connected to the second-phase input end (12) and the first second-phase output end (22). Are connected in series.

  The second second-phase main reactor (87) and the second second-phase sub-reactor (785) are connected to the second-phase input end (12) and the second second-phase output end (32). Are connected in series.

  The first third-phase main reactor (96) and the first third-phase sub-reactor (884) are connected to the third-phase input terminal (13) and the first third-phase output terminal (23). Are connected in series.

  The second third-phase main reactor (97) and the second third-phase sub-reactor (885) are connected to the third-phase input end (13) and the second third-phase output end (33). Are connected in series.

  The first first phase main reactor (76), the second first phase main reactor (77), the first second phase sub reactor (784), and the second second phase sub reactor. The reactor (785) is wound around the first core (51).

  The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the first The second-phase sub-reactor has the same polarity as the second-phase input end (12) and the second second-phase sub-reactor have the second-phase input end (12).

  The first second phase main reactor (86), the second second phase main reactor (87), the first third phase sub reactor (884), and the second third phase sub reactor. The reactor (885) is wound around the second core (52).

  The third phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the first The third phase sub-reactor of the third phase input end (13) side and the second third phase sub-reactor of the third phase input end (13) side have the same polarity.

  The first third phase main reactor (96), the second third phase main reactor (97), the first first phase auxiliary reactor (984), and the second first phase auxiliary reactor. The reactor (985) is wound around the third core (53).

  The third phase input end (13) side of the first third phase main reactor, the second first phase output end (33) side of the second third phase main reactor, and the first The second phase input end (11) side of the first phase subreactor and the second phase input end (11) side of the second first phase subreactor have the same polarity.

The eighth aspect and the ninth aspect of the interphase reactor according to the present invention are both the seventh aspect of the interphase reactor, the second first phase main reactor (77), and the second second reactor. The two-phase main reactor (87) and the second third-phase main reactor (97) both have the first number of windings (W1), and all the sub-reactors all have the second number of windings (W2). The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) are all the third volume. Each is wound with the number of wires (W1 + W2).

In the eighth aspect, the ratio of the first winding number, the second winding number, and the third winding number is 1: ((√3-1) / 2): ((√3 + 1) / 2) It is.

In a ninth aspect, the ratio of the second winding number to the first winding number is cos (20 °) / 2, and the ratio of the third winding number to the first winding number is 2 cos (40 °).

A first aspect of the three-phase multiple rectifier circuit according to the present invention includes an interphase reactor according to any one of the third aspect, the fifth aspect, and the eighth aspect of the interphase reactor, and the first three-phase full-wave rectification. A circuit (6) and a second three-phase full-wave rectifier circuit (7) are provided.

  The first three-phase full-wave rectifier circuit (6) includes the first first phase output terminal (21), the first second phase output terminal (22), and the first third phase. The current obtained from the output terminal (23) is full-wave rectified.

  The second three-phase full-wave rectifier circuit (7) includes the second first phase output terminal (31), the second second phase output terminal (32), and the second third phase. The current obtained from the output terminal (33) is full-wave rectified, and connected on the output side in parallel with the first three-phase full-wave rectifier circuit.

A second aspect of the three-phase multiple rectifier circuit according to the present invention includes an interphase reactor (55) of any one of the fourth aspect, the sixth aspect, and the ninth aspect of the interphase reactor, and a shunt (54). , First to third three-phase full-wave rectifier circuits (6 to 8).

  The shunt (54) receives a three-phase current, shunts the first (iA) of the three-phase current, and a first first-phase current (i12a) and a second first-phase current (ia3). ) Is divided into the second (iB) of the three-phase current and the first second-phase current (i12b) and the second second-phase current (ib3) are converted into the third (iC) of the three-phase current. Are divided to generate a first third-phase current (i12c) and a second third-phase current (ic3), respectively. The first phase current (i12a), the first second phase current (i12b), and the first third phase current (i12c) are converted into the first phase input terminal (11) of the interphase reactor. , And supplied to the second phase input end (12) and the third phase input end (13), respectively.

  The first three-phase full-wave rectifier circuit (6) includes the first first phase output terminal (21), the first second phase output terminal (22), and the first third phase. The current obtained from the output terminal (23) is full-wave rectified.

  The second three-phase full-wave rectifier circuit (7) includes the second first phase output terminal (31), the second second phase output terminal (32), and the second third phase. The current obtained from the output terminal (33) is full-wave rectified, and connected on the output side in parallel with the first three-phase full-wave rectifier circuit.

  The third three-phase full-wave rectifier circuit (8) includes the second first phase current (ia3), the second second phase current (ib3), and the second third phase current (ic3). And is connected in parallel with the first three-phase full-wave rectifier circuit on the output side.

  According to the first aspect of the interphase reactor according to the present invention, the three-phase current is supplied from the first phase input end, the second phase input end, and the third phase input end, and the first first phase output end, Current is supplied to the first three-phase full-wave rectifier circuit from the first second-phase output terminal, the first third-phase output terminal, the second first-phase output terminal, the second second-phase output terminal, It can be used in such a mode that current is supplied from the second third-phase output terminal to the second other three-phase full-wave rectifier circuit. At this time, the fundamental wave component can be balanced by canceling the magnetomotive force, and the harmonic component of less than (6n-1) order is suppressed. In particular, the first first-phase sub-reactor and the third first-phase sub-reactor, the second first-phase sub-reactor and the fourth first-phase sub-reactor, the first second-phase sub-reactor and the third third-phase reactor. A two-phase sub-reactor, a second second-phase sub-reactor and a fourth second-phase sub-reactor, a first third-phase sub-reactor, a third third-phase sub-reactor, and a second third-phase sub-reactor Loss can be reduced by providing each of the fourth and third phase sub-reactors individually.

  According to the second aspect of the interphase reactor according to the present invention, the fundamental wave component is balanced by canceling the magnetomotive force, and the number of reactors is reduced while suppressing the harmonic component of less than (6n-1) order. it can.

  According to the third aspect of the interphase reactor according to the present invention, it can be used for a 12-pulse rectifier circuit, the fundamental wave component can be balanced by canceling the magnetomotive force, and harmonic components other than 12n ± 1st order. Suppress. Furthermore, the power capacity can be reduced.

  According to the fourth aspect of the interphase reactor of the present invention, it can be used for an 18-pulse rectifier circuit, the fundamental wave component can be balanced by canceling the magnetomotive force, and the harmonic components other than 18n ± 1st order. Suppress.

According to the fifth aspect and the sixth aspect of the interphase reactor according to the present invention, a three-phase current is supplied between the first phase input terminal, the second phase input terminal, and the third phase input terminal, A current is supplied from the first phase output terminal, the first second phase output terminal, and the first third phase output terminal to the three-phase full-wave rectifier circuit, and the second first phase output terminal, the second second output terminal, It can be used in such a manner that current is supplied from the phase output terminal and the second third phase output terminal to the other three-phase full-wave rectifier circuit. At this time, the fundamental wave component is balanced by canceling the magnetomotive force. On the other hand, harmonic components less than the (6n-1) th order are suppressed.

According to the fifth aspect of the interphase reactor of the present invention, it can be used for a 12-pulse rectifier circuit, and the fundamental wave component can be balanced by canceling the magnetomotive force, and harmonic components other than 12n ± 1st order. Suppress. Furthermore, copper loss can be reduced.

According to the sixth aspect of the interphase reactor of the present invention, it can be used for an 18-pulse rectifier circuit, the fundamental wave component can be balanced by canceling the magnetomotive force, and harmonic components other than 18n ± 1st order. Suppress.

According to the seventh aspect of the interphase reactor of the present invention, a three-phase current is supplied between the first phase input terminal, the second phase input terminal, and the third phase input terminal, and the first first phase output terminal , Supplying current from the first second-phase output terminal and the first third-phase output terminal to the three-phase full-wave rectifier circuit, the second first-phase output terminal, the second second-phase output terminal, It can be used in such a manner that current is supplied from the second third phase output terminal to the other three-phase full-wave rectifier circuit. At this time, the fundamental wave component can be balanced by canceling the magnetomotive force, and the harmonic component of less than (6n-1) order is suppressed.

  In particular, the first first phase sub reactor and the second first phase sub reactor, the first second phase sub reactor and the second second phase sub reactor, the first third phase sub reactor and the second second reactor. Loss can be reduced by providing the three-phase auxiliary reactors individually.

According to the eighth aspect of the interphase reactor of the present invention, it can be used for a 12-pulse rectifier circuit, the fundamental component can be balanced by canceling the magnetomotive force, and harmonic components other than 12n ± 1st order Suppress.

According to the ninth aspect of the interphase reactor according to the present invention, it can be used for an 18-pulse rectifier circuit, the fundamental wave component can be balanced by canceling the magnetomotive force, and harmonic components other than the 18n ± 1st order. Suppress.

  According to the first aspect of the three-phase multiple rectifier circuit according to the present invention, a 12-pulse multiple rectifier circuit can be realized, and the fundamental component can be balanced by canceling the magnetomotive force, except for 12n ± 1st order. Suppresses higher harmonic components.

  According to the second aspect of the three-phase multiple rectifier circuit of the present invention, an 18-pulse multiple rectifier circuit can be realized, and the fundamental component can be balanced by canceling the magnetomotive force, except for the 18n ± first order. Suppresses higher harmonic components.

  FIG. 1 is a circuit diagram showing a configuration of a multiple rectifier circuit to which an interphase reactor according to the present invention can be applied. In the interphase reactor 5, A-phase, B-phase, and C-phase power source currents iA, iB, and iC are respectively supplied to the A-phase, B-phase, and C-phase three-phase power sources 1a and 1b via the reactors La, Lb, and Lc, respectively. , 1c.

  From the interphase reactor 5, the first A phase current ia1, the first B phase current ib1, the first C phase current ic1, the second A phase current ia2, the second B phase current ib2, and the second C phase A current ic2 is output.

  The first A-phase current ia1, the first B-phase current ib1, and the first C-phase current ic1 are converted by the first full-wave rectifier circuit 6 into the second A-phase current ia2 and the second B-phase current ib2, The second C-phase current ic2 is full-wave rectified by the second full-wave rectifier circuit 7, respectively. The output sides of the first full-wave rectifier circuit 6 and the second full-wave rectifier circuit 7 are connected in parallel between the output terminals P and Q.

  Capacitors C1 and C2 are connected in series between the output terminals P and Q via a neutral point N. A load 9 is also connected between the output terminals P and Q. A load 9 is also connected between the output terminals P and Q, a DC voltage Vd is applied to the load 9, and a DC current Id flows. Hereinafter, unless otherwise specified, the potential at the neutral point N is adopted as the voltage reference.

  FIG. 2 is a circuit diagram illustrating the configuration of the first full-wave rectifier circuit 6 and the second full-wave rectifier circuit 7. The first full-wave rectifier circuit 6 includes six diodes Da1 +, Db1 +, Dc1 +, Da1-, Db1-, Dc1-. The cathodes of the diodes Da1 +, Db1 +, Dc1 + are all connected to the output terminal P, and the anodes of the diodes Da1-, Db1-, Dc1- are all connected to the output terminal Q. The anode of diode Da1 + and the cathode of diode Da1- are connected to terminal a1, the anode of diode Db1 + and the cathode of diode Db1- are connected to terminal b1, and the anode of diode Dc1 + and the cathode of diode Dc1- are connected to terminal c1, respectively. Is done. Similarly, the second full-wave rectifier circuit 6 includes six diodes Da2 +, Db2 +, Dc2 +, Da2-, Db2-, Dc2-, and terminals a2, b2, c2.

  Then, to the terminals a1, b1, c1, a2, b2, and c2, the first A-phase current ia1, the first B-phase current ib1, the first C-phase current ic1, the second A-phase current ia2, A second B-phase current ib2 and a second C-phase current ic2 are supplied (see FIG. 1).

  FIG. 3 is a phasor diagram showing the phase relationship of currents iA, iB, iC, ia1, ib1, ic1, ia2, ib2, ic2 required in the multiple rectifier circuit shown in FIG. Since the power supply currents iA, iB, iC are supplied from the three-phase power supplies 1a, 1b, 1c, they are shifted by 120 degrees. On the other hand, in order to suppress harmonics in the direct current Id, the first A-phase current ia1 and the second A-phase current ia2 are respectively advanced by 15 degrees and delayed by 15 degrees with respect to the power supply current iA. . Similarly, the first B-phase current ib1 and the second B-phase current ib2 are advanced by 15 degrees and delayed by 15 degrees with respect to the power supply current iB, respectively. The current ic2 is advanced by 15 degrees and delayed by 15 degrees with respect to the power supply current iC.

  By adopting such a configuration, a 12-pulse multiple rectifier circuit can be realized, the fundamental component can be balanced by canceling the magnetomotive force, and harmonic components other than the 12n ± 1st order are suppressed.

  In order to obtain the above-described phase relationship, two types of configurations have been proposed as the interphase reactor 5. The first is a configuration in which three windings are wound around one core, and the second is a configuration in which four windings are wound around one core. Hereinafter, for the sake of convenience, the former configuration is tentatively referred to as a “three-winding configuration” and the latter configuration is referred to as a “four-winding configuration”.

First embodiment.
In the first embodiment, an invention according to a three-winding configuration will be described. As a three-winding configuration, the connection system shown in FIG. 4 is introduced in Patent Document 1 and Non-Patent Documents 1 and 2. For convenience, the method shown in FIG. 4 is referred to as a first method. In order to explain the advantages of the present invention, the performance of the first method will be described first.

  The power supply currents iA, iB, and iC are supplied to the A-phase input terminal 11, the B-phase input terminal 12, and the C-phase input terminal 13, respectively, from the first A-phase output terminal 21 and the second A-phase output terminal 31. Output a first A-phase current ia1 and a second A-phase current ia2. Similarly, a first B-phase current ib1 and a second B-phase current ib2 are output from the first B-phase output terminal 22 and the second B-phase output terminal 32, and the first C-phase output terminal 23 is output. The first C-phase current and the second C-phase current ic2 are output from the second C-phase output terminal 33.

  The first A-phase main reactor 76, the second A-phase main reactor 77, and the B-phase auxiliary reactor 78 are wound around the A-phase core 51 so as to have the same polarity. The first B-phase main reactor 86, the second B-phase main reactor 87, and the C-phase sub reactor 88 are wound around the B-phase core 52 so as to have the same polarity. The first C-phase main reactor 96, the second C-phase main reactor 97, and the A-phase auxiliary reactor 98 are wound around the C-phase core 53 so as to have the same polarity.

  The polarity of each reactor is indicated by which end side of the reactor the black spot attached to its side is located. Hereinafter, for the sake of convenience, each end without a black spot will be referred to as a first end, and the end with a black spot as a second end.

  When current flows from the first end to the second end of any of the two reactors wound around the same core, the direction from the first end to the second end of the two reactors is the same direction in the iron core. If there is, the magnetomotive force is generated in the same direction, and if the direction from the first end to the second end of the two reactors is opposite in the iron core, the magnetomotive force is generated in the opposite direction. Of the two reactors wound around the same core, when current flows from the first end of one reactor to the second end and from the second end of the other reactor to the first end, If the direction from the first end to the second end of the two reactors is the same direction in the iron core, magnetomotive force is generated in the opposite direction, and the direction from the first end to the second end of the two reactors is If the iron core is in the opposite direction, the magnetomotive force is generated in the same direction.

  The first end and the second end of the first A-phase main reactor 76 are connected to the first A-phase output end 21 and the A-phase input end 11, respectively.

  A first end and a second end of second A-phase main reactor 77 are connected to A-phase input end 11 and a second end of A-phase auxiliary reactor 98, respectively. A first end of the A-phase auxiliary reactor 98 is connected to the second C-phase output end 33.

The first end and the second end of the first B-phase main reactor 86 are connected to the first B-phase output end 22 and the B-phase input end 12, respectively.
A first end and a second end of second B-phase main reactor 87 are connected to B-phase input end 12 and a second end of B-phase auxiliary reactor 78, respectively. A first end of the B-phase auxiliary reactor 78 is connected to the second A-phase output end 31.

The first end and the second end of the first C-phase main reactor 96 are connected to the first C-phase output end 23 and the C-phase input end 13, respectively.
The first end and the second end of the second C-phase main reactor 97 are connected to the C-phase input end 13 and the second end of the C-phase sub reactor 88, respectively. A first end of the C-phase auxiliary reactor 88 is connected to the second B-phase output end 32.

  By the first and second A-phase main reactors 76 and 77 wound around the A-phase core 51, the power source current iA is advanced by 15 degrees to obtain the first A-phase current ia1 and delayed by 15 degrees. A second A-phase current ia2 is obtained. Similarly, the first and second B-phase main reactors 86 and 87 wound around the B-phase core 52 advance the power source current iB by 15 degrees to obtain the first B-phase current ib1 and delay the phase by 15 degrees. To obtain a second B-phase current ib2. Further, the first and second C-phase main reactors 96 and 97 wound around the C-phase core 53 are used to advance the power source current iC by 15 degrees to obtain the first C-phase current ic1 and to delay it by 15 degrees. To obtain a second C-phase current ic2.

  The first A-phase main reactor 76, the first B-phase main reactor 86, and the first C-phase main reactor 96 have a second winding number W2, and the other reactors have a first winding number W1. And each is wound.

  Now, by preventing the generation of magnetomotive force of the fundamental wave component, the reactance for the fundamental wave component is made substantially zero, and the reactance for the harmonic component is increased, thereby suppressing the generation of harmonics. In general, in a three-phase multiple rectifier circuit, harmonic components of less than (6n-1) order are suppressed. In the first method and the second to sixth methods described later, full-wave rectification is performed using the current that is advanced and delayed by 15 degrees as described above while obtaining the balance of the fundamental wave component, so that 12n ± 1 Suppresses harmonic components other than the following.

  FIG. 5 is a phasor diagram showing the relationship of magnetomotive force (ampere turn) when the magnetomotive force of the fundamental wave component is not generated in the first method. The magnetomotive force W2 · ia1 generated in the first A-phase main reactor 76 and the magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77 (the second A-phase main reactor 77 is the first and The sum of the second A-phase main reactors 76 and 77 and the magnetomotive force W1 · ib2 generated in the B-phase sub-reactor 78 is 0 because the polarity of the current flowing in is opposite to that of the second A-phase main reactors 76 and 77. .

  Thus, the B-phase auxiliary reactor 78 has a function of canceling the magnetomotive force of the fundamental wave generated by shifting the currents ia1 and ia2 from the power supply current iA at ± 15 degrees. The magnetomotive force (which is generated by the sub-reactor) that cancels the magnetomotive force of the fundamental wave (which is generated by the main reactor) generated by the phase shift from the power supply current to the current applied to the full-wave rectifier circuit is as follows: Then, it is tentatively called “cancel magnetomotive force”.

  The secondary reactor that generates the cancel magnetomotive force needs to pass a current that is different in phase from the current that flows through the main reactor wound around the same core as the secondary reactor. In the above example, the first and second A-phase main reactors 76 and 77 are supplied with the first and second A-phase currents ia1 and ia2, while the sub-reactor 78 is supplied with the second B-phase current ib2. Flowing.

  In FIG. 5, the magnetomotive force (including the canceling magnetomotive force) is indicated by a thick line, the current adopted for generating the canceling magnetomotive force is indicated by a solid line, and the other currents are indicated by broken lines. Such a notation is also adopted in later phasor diagrams.

  Although the phase shift of the current and the cancel magnetomotive force in the A phase have been described with reference to FIG. 5, the same applies to the B phase and the C phase, and the cancel magnetomotive force is generated by the sub reactors 88 and 98 to obtain a three-phase equilibrium. .

  In the first method, in order to obtain the phase shift, cancellation of the fundamental magnetomotive force, and balancing, the ratio of the number of first windings to the number of second windings may be 1: √3. It is known (for example, see Patent Document 1 and Non-Patent Documents 1 and 2). Therefore, if the total of the windings wound around one core is considered on the basis of the current applied to the second full-wave rectifier circuit 7 (that is, if the first winding number W1 is 1), √3 + 2 It becomes. It is clear that a smaller total winding is advantageous from the viewpoint of copper loss.

  On the other hand, it is known that the power capacity of the interphase reactor 5 in the first method is 0.182 · Vd · Id (see, for example, Non-Patent Document 2). Is also obvious.

  Next, as another three-winding configuration, the connection methods listed in FIG. 6 are introduced in Patent Documents 1 and 2 and Non-Patent Documents 1 to 3. For convenience, the connection method illustrated in FIG. 6 is referred to as a second method. In order to explain the advantages of the present invention, the performance of the second method will be described.

  A phase input terminal 11, second phase input terminal 12, and C phase input terminal 13, first A phase output terminal 21, second A phase output terminal 31, first B phase output terminal 22 and second The functions of the B-phase output terminal 32, the first C-phase output terminal 23, and the second C-phase output terminal 33 are the same as in the first method.

  The first A-phase main reactor 76, the second A-phase main reactor 77, and the B-phase auxiliary reactor 78 are wound around the A-phase core 51 so as to have the same polarity. The first B-phase main reactor 86, the second B-phase main reactor 87, and the C-phase sub reactor 88 are wound around the B-phase core 52 so as to have the same polarity. The first C-phase main reactor 96, the second C-phase main reactor 97, and the A-phase auxiliary reactor 98 are wound around the C-phase core 53 so as to have the same polarity.

  The second A-phase main reactor 77, the second B-phase main reactor 87, and the second C-phase main reactor 97 are each wound with the first winding number W1. The sub reactors 78, 88, and 98 are wound with the second winding number W2. The first A-phase main reactor 76, the first B-phase main reactor 86, and the first C-phase main reactor 96 are wound by the third winding number W3.

  The first end of first A-phase main reactor 76 is connected to first A-phase output end 21. A second end of first A-phase main reactor 76 and a first end of second A-phase main reactor 77 are connected to a first end of A-phase auxiliary reactor 98. The second end of second A-phase main reactor 77 is connected to second A-phase output end 31, and the second end of A-phase sub-reactor 98 is connected to A-phase input end 11.

  The first end of first B-phase main reactor 86 is connected to first B-phase output end 22. A second end of first B-phase main reactor 86 and a first end of second B-phase main reactor 87 are connected to a first end of B-phase auxiliary reactor 78. The second end of the second B-phase main reactor 87 is connected to the second B-phase output end 32, and the second end of the B-phase sub-reactor 78 is connected to the B-phase input end 12.

  The first end of first C-phase main reactor 96 is connected to first C-phase output end 23. A second end of first C-phase main reactor 96 and a first end of second C-phase main reactor 97 are connected to a first end of C-phase sub reactor 88. The second end of the second C-phase main reactor 97 is connected to the second C-phase output end 33, and the second end of the C-phase auxiliary reactor 88 is connected to the C-phase input end 13.

  The main reactors 76, 77, 86, 87, 96, and 97 are the first and second full-wave rectifier circuits that advance and retard the power source currents iA, iB, and iC by 15 degrees, as in the first method. Currents ia1, ib1, ic1, ia2, ib2, ic2 to be supplied to 6 and 7 are generated. The sub reactors 78, 88, 98 also generate cancel magnetomotive force as in the first method.

  FIG. 7 is a phasor diagram showing the relationship of magnetomotive force when the magnetomotive force of the fundamental wave component is not generated in the second method. Magnetomotive force W3 · ia1 generated in the first A-phase main reactor 76, magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77, and cancellation magnetomotive force generated in the B-phase subreactor 78 The sum of W2 · iB is zero.

  In the second method, in order to obtain the above-described phase shift, cancellation of the fundamental magnetomotive force, and balancing, the ratio of the first winding number, the second winding number, and the third winding number is set to 2 : (√3-1) :( √3 + 1) is known (see, for example, Patent Document 1 and Non-Patent Documents 1 and 2). Therefore, if the total of the windings wound around one core is considered based on the current supplied to the second full-wave rectifier circuit 7 (that is, if the first winding number W1 is 1), 3√3 + 1) / 2. However, in the second method, considering that the current flowing through the sub-reactor is the power supply current and the current flowing through the two full-wave rectifier circuits 6 and 7 is combined, the number of second windings is doubled. Calculated.

  On the other hand, it is known that the power capacity of the interphase reactor 5 is 0.134 · Vd · Id in the second system (see, for example, Non-Patent Document 1 and Non-Patent Document 3).

  Next, a three-winding configuration according to the present invention is shown in FIG. For convenience, the connection method shown in FIG. 8 is referred to as a third method. Also in the present invention, the A-phase input terminal 11, the B-phase input terminal 12, and the C-phase input terminal 13, the first A-phase output terminal 21, the second A-phase output terminal 31, and the first B-phase output terminal 22 are used. The functions of the second B-phase output terminal 32, the first C-phase output terminal 23, and the second C-phase output terminal 33 are the same as those of the first method.

  The first A-phase main reactor 76 and the A-phase auxiliary reactor 98 are connected in series between the A-phase input end 11 and the first A-phase output end 21. The first B-phase main reactor 86 and the B-phase sub-reactor 78 are connected in series between the B-phase input end 12 and the first B-phase output end 22. The first C-phase main reactor 96 and the C-phase sub-reactor 88 are connected in series between the C-phase input end 13 and the first C-phase output end 23.

  Second A-phase main reactor 77 is connected between A-phase input terminal 11 and second A-phase output terminal 31. Second B-phase main reactor 87 is connected between B-phase input end 12 and second B-phase output end 32. Second C-phase main reactor 97 is connected between C-phase input terminal 13 and second C-phase output terminal 32.

  First A-phase main reactor 76, second A-phase main reactor 77, and B-phase sub-reactor 78 are wound around A-phase core 51. First B-phase main reactor 86, second B-phase main reactor 87, and C-phase sub-reactor 88 are wound around B-phase core 52. First C-phase main reactor 96, second C-phase main reactor 97, and A-phase sub-reactor 98 are wound around C-phase core 53.

  The A-phase input end 11 side of the first A-phase main reactor 76, the second A-phase output end 31 side of the second A-phase main reactor, and the B-phase input end 12 side of the B-phase auxiliary reactor 78 are , The second end of each reactor. B phase input end 12 side of first B phase main reactor 86, second B phase output end 32 side of second B phase main reactor 87, C phase input end 13 side of C phase sub reactor 88, Is the second end of each reactor. C-phase input end 13 side of first C-phase main reactor 96, second C-phase output end 33 side of second C-phase main reactor 97, and first A-phase input end of A-phase sub-reactor 98 The 11th side is the second end of each reactor.

  The second A-phase main reactor 77, the second B-phase main reactor 87, and the second C-phase main reactor 97 are all wound with the first winding number W1. The A-phase subreactor 98, the B-phase subreactor 78, and the C-phase subreactor 88 are all wound with the second winding number W2. The first A-phase main reactor 76, the first B-phase main reactor 86, and the first C-phase main reactor 96 are all wound with the third winding number W3.

  Also in the present invention, as in the first method and the second method, the main reactors 76, 77, 86, 87, 96, and 97 have the power supply currents iA, iB, and iC advanced by 15 degrees as in the first method. The currents ia1, ib1, ic1, ia2, ib2, ic2 to be supplied to the first and second full-wave rectifier circuits 6 and 7 are generated after being delayed. The sub reactors 78, 88, 98 also generate cancel magnetomotive force as in the first method.

  FIG. 9 is a phasor diagram showing the relationship of magnetomotive force when the magnetomotive force of the fundamental wave component is not generated in the third method. Magnetomotive force W3 · ia1 generated in the first A-phase main reactor 76, magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77, and cancellation magnetomotive force generated in the B-phase subreactor 78 The sum of W2 · ib1 becomes zero.

  In the third method, the ratio of the number of first windings, the number of second windings, and the number of third windings for obtaining the above-described phase shift, cancellation of fundamental magnetomotive force, and balancing is as follows. Is required. The phasors W3, ia1, W2, ib1 form 60 degrees, and the phasors W1, ia2, W2, ib1 form an angle of 90 degrees. Since ia1 = ia2 = ib1 from the equilibrium condition, W1: W2: W3 = √3: 1: 2.

  In this case, the total sum of the windings wound around one core is considered based on the current supplied to the second full-wave rectifier circuit 7 (that is, when the first winding number W1 is 1). 1 + √3.

  On the other hand, in the third method, the power capacity of the interphase reactor 5 is obtained as follows. The voltages at the A-phase input terminal 11, the second-phase input terminal 12, and the C-phase input terminal 13 are VA, VB, and VC, respectively. The voltages at the A-phase output terminals 21 and 31 are Va1 and Va2, respectively, the voltages at the B-phase output terminals 22 and 32 are Vb1 and Vb2, respectively, and the voltages at the C-phase output terminals 23 and 33 are Vc1 and Vc2, respectively. . The reference for these voltages is the neutral point N potential.

  The magnetic fluxes generated in the A-phase core 51, the B-phase core 52, and the C-phase core 53 are assumed to be φA, φB, and φC, respectively. When the symbols are taken in this way, the following expressions (1) to (6) are established.

  Then, when Va1a2 = Va1-Va2, Vb1b2 = Vb1-Vb2, and Vc1c2 = Vc1-Vc2, the following equations (7) to (9) are obtained.

  When VAa2 = VA−Va2, which is a voltage applied in the second A-phase main reactor 77, is introduced, the following equation (10) is obtained from equations (7) to (9). Further, the following equations (11) to (13) are obtained by using the relationship of W1 = W2 · √3, W3 = 2 · W2.

  Therefore, Formula (10) is expressed as the following Formula (14). This shows a voltage waveform applied in the second A-phase main reactor 77.

  Now, equation (15) is obtained using the coefficients Ka, Kb, and Kc. From this integral value, the peak value φM of the magnetic flux (linkage magnetic flux) interlinking with the second phase main reactors 77, 87, 97 is obtained as equations (16) and (17). However, the voltage cycle was T.

  When obtaining the power capacity, the saturation is taken into consideration, and the calculation is made assuming that an equivalent sine wave voltage corresponding to the peak value φM is applied to the reactor. The effective voltage value Vequ of the equivalent sine wave voltage is obtained as Expression (18). The sub reactors 78, 88, 98 and the first phase main reactors 76, 86, 96 are similarly considered, and the currents flowing through the reactors (these are not the power source currents input to the interphase reactor 5, all of which are interphase reactors). 5 is introduced into the full-wave rectifier circuits 6 and 7), and the three-phase power capacity (VA) total is expressed by the following equation (19).

  Here, the relationship among the effective value IR, the effective value IS of the power supply current, and the direct current Id is expressed by the equation (20).

  Therefore, Expression (21) is obtained from Expressions (17), (19), and (20).

  Moreover, since the reactor of each phase is a self-winding transformer, the electric power capacity (VA) equ converted into the normal transformer becomes 1/2 of (VA) total. Therefore, in the third method, the power capacity of the interphase reactor 5 is 0.171 · Vd · Id. This is smaller than the power capacity 0.182 · Vd · Id of the first method and larger than the power capacity 0.134 · Vd · Id of the second method.

  That is, by adopting the third method, the total sum of the windings (1 + √3) is changed to the total sum of the windings in the first method (2 + √3) or the total sum of the windings in the second method (3√3 + 1) / 2. Can be made smaller. Moreover, the power capacity does not increase as much as in the first method. That is, the copper loss can be reduced without hindering the miniaturization of the interphase reactor 5.

  FIGS. 10 to 12 show the results of simulating changes over time for the voltage VAa1 applied to the first A-phase main reactor 76 and the linkage flux for the first method, the second method, and the third method, respectively. It is a graph. In both figures, the horizontal axis represents time, and the vertical axis represents voltage and flux linkage. The thin line indicates the voltage, and the thick line indicates the interlinkage magnetic flux. Here, assuming a commercial frequency of 50 Hz, the period T was transferred to 0.02 seconds.

  In any of the first method, the second method, and the third method, currents having a phase difference of 30 degrees per phase are supplied to the full-wave rectifier circuit as shown in FIG. Therefore, with respect to one phase, a voltage is applied to the winding in a 30 degree period every half cycle. In any of the first method, the second method, and the third method, the phase A voltage amplitude appears at phase angles of 0 to 30 degrees and 180 to 210 degrees.

  In this way, the voltage applied to the winding in the 30-degree period becomes almost a DC voltage by the full-wave rectifier circuits 6 and 7, so that the voltage amplitude is divided by the first and second main reactors. Can be approximated. For example, in the first method and the third method, the voltage between the first A-phase output end 21 and the second C-phase output end 33 is divided, and in the second method, the first A-phase output end 21 and the second A-phase output end 21 The voltage between the A-phase output terminals 31 is divided. If the voltage drop in the diodes of the full-wave rectifier circuits 6 and 7 and the time required for commutation are ignored, the voltage between these terminals is substantially equal to the DC voltage Vd at the phase angle of 0 to 30 degrees.

  Therefore, the voltage amplitude increases as the winding ratio of the first A-phase main reactor 76 to the second A-phase main reactor 77 increases. Correspondingly, in FIGS. 10 to 12, the first method is compared with the second method and the second method is compared with the third method, and the phase shift angles are 0 to 30 degrees and 180 to 210 degrees, respectively. The voltage amplitude at is large.

  However, in the first method and the third method, it is affected by the voltage generated in the C phase at a phase angle of 60 to 90 degrees and 240 to 270 degrees, and the B phase at a phase angle of 120 to 150 degrees and 300 to 300 degrees. It is also affected by the voltage generated in

  In the first method and the third method, an A-phase auxiliary reactor 98 is interposed between the first A-phase output end 21 and the second C-phase output end 33, and the A-phase auxiliary reactor 98 is connected to the C-phase core 53. It is wound. Therefore, in FIG. 10 and FIG. 12, although the voltage VAa1 is applied to the first A-phase main reactor 76, a voltage is generated at a phase angle of 60 to 90 degrees. In the second method, the A-phase auxiliary reactor 98 is not interposed between the first A-phase output terminal 21 and the second A-phase output terminal 31, so that no voltage is generated at a phase angle of 60 to 90 degrees (see FIG. 11).

  In the first method, since the voltage at the terminal 33 is higher than that at the terminal 21, a negative voltage is generated at the phase angle of 60 to 90 degrees in FIG. On the other hand, in the third type C-phase core 53, the second C-phase output end 33 is connected to the second end of the second C-phase main reactor 97, and the first end of the A-phase sub-reactor 98 is connected to the first end. A phase output terminal 21 is connected. Since the potential at the first A-phase output terminal 21 has already dropped to the lower limit, the increase in the voltage at the second C-phase output terminal 33 causes the voltage at the second end of the A-phase auxiliary reactor 98 to increase. As a result, a positive voltage is generated at a phase angle of 60 to 90 degrees in FIG.

  If the total winding is large, the generated voltage is high. Therefore, the peak of the generated voltage shown in FIGS. 10 to 12 is higher in the second method than in the third method, and higher in the first method than in the second method. However, as described above, the power capacity is proportional to the effective voltage value Vequ of an equivalent sine wave based on the peak value φM of the flux linkage. The peak of the interlinkage magnetic flux shown in FIGS. 10 to 12 is also lower in the third method than in the first method, and lower in the second method than in the third method, similarly to the power capacity.

Second embodiment.
In the second embodiment, an invention according to a four-winding configuration will be described. In the four-winding configuration, two cancel magnetomotive forces are generated for each phase.

  A phase input terminal 11, second phase input terminal 12, and C phase input terminal 13, first A phase output terminal 21, second A phase output terminal 31, first B phase output terminal 22 and second The functions of the B-phase output terminal 32, the first C-phase output terminal 23, and the second C-phase output terminal 33 are the same as those in the first embodiment.

  As a four-winding configuration, the connection system shown in FIG. 13 is introduced in Patent Document 2 and Non-Patent Documents 1, 2, and 4. For convenience, the connection method shown in FIG. 13 is referred to as a fourth method. In order to explain the advantages of the present invention, the performance of the fourth method will be described first.

  A phase core so that first A phase main reactor 76, second A phase main reactor 77, first B phase sub reactor 78, and second C phase sub reactor 79 have the same polarity. 51 is wound. B-phase core such that first B-phase main reactor 86, second B-phase main reactor 87, first C-phase sub-reactor 88, and second A-phase sub-reactor 89 have the same polarity. 52. C-phase core so that first C-phase main reactor 96, second C-phase main reactor 97, first A-phase sub-reactor 98, and second B-phase sub-reactor 99 have the same polarity. 53.

  Between the A-phase input end 11 and the first A-phase output end 21, the first A-phase main reactor 76 and the first C-phase auxiliary reactor 88 are arranged such that the second ends thereof are on the A-phase input end 11 side. Connected in series. Between the A-phase input end 11 and the second A-phase output end 31, the second A-phase main reactor 77 and the second B-phase sub-reactor 99 have their first ends on the A-phase input end 11 side. Connected in series.

  Between the B-phase input terminal 12 and the first B-phase output terminal 22, the first B-phase main reactor 86 and the first A-phase sub-reactor 98 have their second ends on the B-phase input terminal 12 side. Connected in series. Between the B-phase input terminal 12 and the second B-phase output terminal 32, the second B-phase main reactor 87 and the second C-phase sub-reactor 79 have their first ends on the B-phase input terminal 12 side. Connected in series.

  Between the C-phase input end 13 and the first C-phase output end 23, the first C-phase main reactor 96 and the first B-phase sub-reactor 78 have their second ends on the C-phase input end 13 side. Connected in series. Between the C-phase input terminal 13 and the second C-phase output terminal 33, the second C-phase main reactor 97 and the second A-phase sub-reactor 89 are respectively connected to the C-phase input terminal 13 side. Connected in series.

  The main reactors 76, 77, 86, 87, 96, 97 are wound with the first winding number W1. The sub reactors 78, 79, 88, 89, 98, 98 are wound with the second number of windings W2.

  The main reactors 76, 77, 86, 87, 96, 97 are similar to the first to third systems in that the power source currents iA, iB, iC are advanced / delayed by 15 degrees to make the first and second all Currents ia1, ib1, ic1, ia2, ib2, and ic2 to be supplied to the wave rectifier circuits 6 and 7 are generated. The sub reactors 78, 79, 88, 89, 98, 99 generate cancel magnetomotive force.

  FIG. 14 is a phasor diagram showing the relationship of magnetomotive force when the magnetomotive force of the fundamental wave component is not generated in the fourth method. Magnetomotive force W1 · ia1 generated in first A-phase main reactor 76, magnetomotive force (−W1) · ia2 generated in second A-phase main reactor 77, and second C-phase subreactor 79 The sum of the cancel magnetomotive force (−W2) · ic1 and the cancel magnetomotive force W2 · ib2 generated in the first B-phase subreactor 78 becomes zero.

  In the fourth method, in order to obtain the above-described phase shift, cancellation of the fundamental magnetomotive force, and balancing, the ratio of the number of first windings to the number of second windings is set to 2: (√3-1 (See, for example, Patent Document 2 and Non-Patent Document 2). Therefore, if the total of the windings wound around one core is considered based on the current supplied to the second full-wave rectifier circuit 7 (that is, if the first winding number W1 is 1), √3 + 1). However, in the fourth system, two main reactors and two sub-reactors are provided, and considering that the currents flowing through two different full-wave rectifier circuits 6 and 7 flow into each, the first number of windings and the second The calculation was performed by doubling the number of windings.

  On the other hand, it is known that the power capacity of the interphase reactor 5 is 0.153 · Vd · Id in the fourth system (see, for example, Non-Patent Document 1 and Non-Patent Document 4).

  Next, as another four-winding configuration, Patent Document 2 introduces a connection method exemplified in FIG. For convenience, the connection method shown in FIG. 15 is referred to as a fifth method. In order to explain the advantages of the present invention, the performance of the fifth method will be described.

  A phase core so that first A phase main reactor 76, second A phase main reactor 77, first B phase sub reactor 78, and second C phase sub reactor 79 have the same polarity. 51 is wound. B-phase core such that first B-phase main reactor 86, second B-phase main reactor 87, first C-phase sub-reactor 88, and second A-phase sub-reactor 89 have the same polarity. 52. C-phase core so that first C-phase main reactor 96, second C-phase main reactor 97, first A-phase sub-reactor 98, and second B-phase sub-reactor 99 have the same polarity. 53.

  Between the A-phase input end 11 and the first A-phase output end 21, the first A-phase main reactor 76 and the first A-phase sub reactor 98 have their respective second ends on the A-phase input end 11 side. Connected in series. Between the A-phase input end 11 and the second A-phase output end 31, the second A-phase main reactor 77 and the second A-phase sub reactor 89 have their first ends on the A-phase input end 11 side. Connected in series.

  Between the B-phase input terminal 12 and the first B-phase output terminal 22, the first B-phase main reactor 86 and the first B-phase sub-reactor 78 have their second ends on the B-phase input terminal 12 side. Connected in series. Between the B-phase input terminal 12 and the second B-phase output terminal 32, the second B-phase main reactor 87 and the second B-phase sub-reactor 99 have their first ends on the B-phase input terminal 12 side. Connected in series.

  Between the C-phase input end 13 and the first C-phase output end 23, the first C-phase main reactor 96 and the first C-phase sub-reactor 88 have their respective second ends on the C-phase input end 13 side. Connected in series. Between the C-phase input end 13 and the second C-phase output end 33, the second C-phase main reactor 97 and the second C-phase sub-reactor 79 have their first ends on the C-phase input end 13 side. Connected in series.

  The main reactors 76, 77, 86, 87, 96, 97 are wound with the first winding number W1. The sub reactors 78, 79, 88, 89, 98, 98 are wound with the second number of windings W2.

  In the fifth system, as in the fourth system, the main reactors 76, 77, 86, 87, 96, 97 generate currents ia1, ib1, ic1, ia2, ib2, ic2, and the sub reactors 78, 79, 88, 89, 98, and 99 generate cancel magnetomotive force.

  FIG. 16 is a phasor diagram showing the relationship of magnetomotive force when the magnetomotive force of the fundamental wave component is not generated in the fifth method. Magnetomotive force W1 · ia1 generated in first A-phase main reactor 76, magnetomotive force (−W1) · ia2 generated in second A-phase main reactor 77, and second C-phase subreactor 79 The sum of the cancel magnetomotive force (−W2) · ic2 and the cancel magnetomotive force W2 · ib1 generated in the first B-phase subreactor 78 becomes zero.

  In the fifth method, in order to obtain the above-described phase shift, cancellation of the fundamental magnetomotive force, and balancing, the ratio of the number of first windings to the number of second windings is set to 1: (2-√3 ) Is known (see, for example, Patent Document 2). Therefore, if the total of the windings wound around one core is considered based on the current supplied to the second full-wave rectifier circuit 7 (that is, if the first winding number W1 is 1), 6-2√3). However, in the fifth method, similarly to the fourth method, the number of first windings and the number of second windings were doubled.

  On the other hand, in the fifth method, it is known that the power capacity of the interphase reactor 5 is 0.166 · Vd · Id (see, for example, Non-Patent Document 4).

  Next, a four-winding configuration according to the present invention is shown in FIG. For convenience, the connection method shown in FIG. 17 is referred to as a sixth method.

  Between the A-phase input terminal 11 and the first A-phase output terminal 21, a first A-phase main reactor 76, a second A-phase sub-reactor 89, and a first A-phase sub-reactor 98 are respectively connected. The two ends are connected in series with the A-phase input end 11. Further, a second A-phase main reactor 77, a second A-phase auxiliary reactor 89, and a first A-phase auxiliary reactor 98 are connected in series between the A-phase input terminal 11 and the second A-phase output terminal 31. Is done. However, the first end of the second A-phase main reactor 77 is connected to the A-phase input end 11.

  Between the B-phase input terminal 12 and the first B-phase output terminal 22, a first B-phase main reactor 86, a second B-phase sub-reactor 99, and a first B-phase sub-reactor 78 are respectively connected. The two ends are connected in series with the B-phase input end 12. A second B-phase main reactor 87, a second B-phase sub-reactor 99, and a first B-phase sub-reactor 78 are connected in series between the B-phase input terminal 12 and the second B-phase output terminal 32. Is done. However, the first end of the second B-phase main reactor 87 is connected toward the B-phase input end 12.

  Between the C-phase input terminal 13 and the first C-phase output terminal 23, a first C-phase main reactor 96, a second C-phase sub-reactor 79, and a first C-phase sub-reactor 88 are respectively connected. The two ends are connected in series with the C-phase input end 13. In addition, a second C-phase main reactor 97, a second C-phase sub reactor 79, and a first C-phase sub reactor 88 are connected in series between the C insertion force end 13 and the second C-phase output end 33. Is done. However, the first end of the second C-phase main reactor 97 is connected toward the C-phase input end 13.

  First A-phase main reactor 76, second A-phase main reactor 77, first B-phase sub-reactor 78, and second C-phase sub-reactor 79 are wound around A-phase core 51. First B-phase main reactor 86, second B-phase main reactor 87, first C-phase sub-reactor 88, and second A-phase sub-reactor 89 are wound around B-phase core 52. First C-phase main reactor 96, second C-phase main reactor 97, first A-phase sub-reactor 98, and second B-phase sub-reactor 99 are wound around C-phase core 53.

  A phase input end 11 side of the first A phase main reactor 76, a second A phase output end 31 side of the second A phase main reactor 77, and a B phase input end of the first B phase sub reactor 78. The 12th side is the second end of each reactor. B phase input end 12 side of first B phase main reactor 86, second B phase output end 32 side of second B phase main reactor 87, and C phase input end of first C phase sub reactor 88. The 13th side is the second end of each reactor. C-phase input end 13 side of first C-phase main reactor 96, second C-phase output end 33 side of second C-phase main reactor 97, and first A of first A-phase sub-reactor 98 The phase input end 11 side is the second end of each reactor.

  A phase input end 11 side of the second A phase sub reactor 89, a B phase input end 12 side of the second B phase sub reactor 99, a C phase input end 13 side of the second C phase sub reactor 79, Is the first end of each reactor.

  The main reactors 76, 77, 86, 87, 96, 97 are wound with the first winding number W1. The sub reactors 78, 79, 88, 89, 98, 98 are wound with the second number of windings W2.

  In the sixth system, as in the fourth system and the fifth system, the main reactors 76, 77, 86, 87, 96, 97 generate currents ia1, ib1, ic1, ia2, ib2, ic2, 79, 88, 89, 98, 99 generate cancel magnetomotive force.

  FIG. 18 is a phasor diagram showing the relationship of magnetomotive force when the magnetomotive force of the fundamental wave component is not generated in the sixth method. Magnetomotive force W1 · ia1 generated in first A-phase main reactor 76, magnetomotive force (−W1) · ia2 generated in second A-phase main reactor 77, and second C-phase subreactor 79 The sum of the cancel magnetomotive force (−W2) · iC and the cancel magnetomotive force W2 · iB generated in the first B-phase subreactor 78 becomes zero.

  In the sixth method, the ratio of the number of first windings and the number of second windings for obtaining the above-described phase shift, cancellation of fundamental magnetomotive force, and balancing is obtained as follows. Phaser (−W2) · iC, W2 · ib forms 120 °, and phaser (−W1) · ia2, W2 · iB forms an angle of 90 °. From the equilibrium condition, ia1 = ia2 = iB / (2 · cos (π / 12)) = iC / (2 · cos (π / 12)), so W1: W2 = 3: (2√3-3) It becomes. Therefore, the total number of windings wound around one core is 2 + 4 when the current supplied to the second full-wave rectifier circuit 7 is considered as a reference (that is, when the first winding number W1 is 1). (2√3-3) / 3. However, as in the second method, the current flowing in the sub-reactor is the power supply current, the current flowing in the two full-wave rectifier circuits 6 and 7 is combined, and the same as in the fourth method and the fifth method. In consideration of the fact that there are two main reactors and two sub-reactors, the first winding number was doubled and the second winding number was quadrupled.

  On the other hand, in the sixth method, the power capacity of the interphase reactor 5 is obtained as follows. When the code adopted in the third method is adopted, the following equations (22) to (27) are obtained, and the following equations (28) to (30) are further established from these.

  A connection point between the first A-phase main reactor 76 and the second A-phase main reactor 77 is a node 41, and a voltage V41a2 at the node 41 viewed from the first A-phase output terminal 21 is expressed by the following equation (31). The

  Therefore, the peak value φM of the magnetic flux interlinking with the second phase main reactors 77, 87, 97 (interlinking magnetic flux) is obtained as equation (32).

  The equivalent sine wave voltage effective value Vequ corresponding to the peak value φM is also obtained as equation (18) in the sixth method. In consideration of the sub-reactors 78, 79, 88, 89, 98, 99 and the first phase main reactors 76, 86, 96 in the same manner, the effective value IR of the current flowing through each reactor is introduced to obtain the three-phase components. The power capacity (VA) total is expressed by the following equation (33).

  In the sixth method, equation (20) is also established, and equation (34) is derived from equation (33).

  Also in the sixth method, the power capacity (VA) equ is ½ of (VA) total, so in the sixth method, the power capacity of the interphase reactor 5 is 0.133 · Vd · Id. This is smaller than the power capacity 0.153 · Vd · Id of the fourth method and the power capacity 0.166 · Vd · Id of the fifth method.

  That is, by adopting the sixth method, the power capacity can be reduced and the interphase reactor 5 can be reduced in size. Moreover, although the total winding is not smaller than the fifth method, it is not as large as the fourth method.

  FIGS. 19 to 21 show the results of simulating changes over time for the voltage VAa1 applied to the first A-phase main reactor 76 and its linkage flux for the fourth method, the fifth method, and the sixth method, respectively. It is a graph. Similar to FIGS. 10 to 12, the horizontal axis represents time, and the vertical axis represents voltage and flux linkage. The thin line indicates the voltage, and the thick line indicates the interlinkage magnetic flux.

  In any of the fourth method, the fifth method, and the sixth method, currents having a phase difference of 30 degrees per phase are supplied to the full-wave rectifier circuit as shown in FIG. Therefore, with respect to one phase, a voltage is applied to the winding in a 30 degree period every half cycle. In any of the first method, the second method, and the third method, the phase A voltage amplitude appears at phase angles of 0 to 30 degrees and 180 to 210 degrees.

  In the fourth method and the fifth method, the first and second A-phase auxiliary reactors 98 and 89 are interposed between the first A-phase output terminal 21 and the second C-phase output terminal 33, respectively. It is wound around the phase core 53 and the B phase core 52. Therefore, in FIGS. 19 and 20, although the voltage VAa1 is applied to the first A-phase main reactor 76, the phase angle is 60 to 90 degrees, 240 to 270 degrees, 120 to 150 degrees, 300 to 300 degrees. A voltage is generated even at a temperature.

  On the other hand, in the sixth method, the first and second A-phase auxiliary reactors 98 and 89 are not interposed between the first A-phase output end 21 and the second A-phase output end 31. Voltage is generated only at angles of 0 to 30 degrees and 180 to 210 degrees (FIG. 21).

  As described in the comparison between the first method, the second method, and the third method, the voltage is higher as the total sum of the windings is larger. Accordingly, the peak of the generated voltage shown in FIGS. 19 to 21 is higher in the sixth method than in the fifth method, and higher in the fourth method than in the sixth method. However, as described above, the power capacity is proportional to the effective voltage value Vequ of an equivalent sine wave based on the peak value φM of the flux linkage. And the peak of the interlinkage magnetic flux shown in FIG. 19 to FIG. 21 is lower in the fourth method than in the fifth method, and lower in the sixth method than in the fourth method, similarly to the power capacity.

  In general, the four-winding configuration has a smaller total sum of windings wound around one core than the three-winding configuration. This is because the size of the phasor of the cancel magnetomotive force is reduced. For example, in the first method, the second method, and the third method, the total sum of the windings wound around one core is about 3 when considering the current supplied to the second full-wave rectifier circuit 7 as a reference. .732, 3.098, 2.732. In contrast, in the fourth method, the fifth method, and the sixth method, the total sum of the windings is approximately 2.732, 2.619, and 2.536, respectively.

  From this point of view, despite the three winding configuration, the third method according to the present invention can reduce the total sum of the windings to the four winding configuration, and the copper loss as described above. This is advantageous from the viewpoint of reducing.

Third embodiment.
In the sixth method, the power source currents iB and iC are employed as the current for obtaining the cancel magnetomotive force for the A phase. Therefore, a power supply current flows through the first and second phase subreactors in the sixth system. On the other hand, the current supplied to the first full-wave rectifier circuit 6 or the second full-wave rectifier circuit 7 flows through the first and second phase subreactors in the fourth and fifth systems.

Therefore, from the viewpoint of reducing the copper loss, the current supplied to the first full-wave rectifier circuit 6 or the second full-wave rectifier circuit 7 flows through the first and second phase subreactors separately. It is possible to divide. In the sixth method, currents ia1 and ia2 having different phases flow through the first and second A-phase subreactors 98 and 99, respectively. Therefore, the first and second A-phase auxiliary reactors 98 and 99 are separately provided in the respective paths by dividing into a path through which the current iA1 flows and a path through which the current iA2 flows. As a result, the copper loss based on the currents ia1 and ia2 has the absolute value of these currents equal to ia0, and the resistance component for one sub-reactor is r, and 2 · (2 · ia0) ² · r to 4 · It can be halved to ia0 ² · r.

  FIG. 22 shows a specific connection system of the present embodiment. In the sixth system, instead of the first A-phase auxiliary reactor 98 provided between the node 41 to which the first and second A-phase main reactors 76 and 77 are connected and the A-phase input end 11, In the embodiment, a first A-phase auxiliary reactor 982 and a third A-phase auxiliary reactor 983 are provided between the node 41 and the first A-phase output end 21. In this embodiment, instead of the second A-phase auxiliary reactor 89 provided between the node 41 and the A-phase input end 11, the second A-phase output end 31 is connected between the node 41 and the second A-phase output end 31. Two A-phase auxiliary reactors 892 and a fourth A-phase auxiliary reactor 893 are provided.

  That is, the node 41 and the A phase input end 11 are directly connected, and the first A phase main reactor 76, the first A phase sub reactor 982, between the A phase input end 11 and the first A phase output end 21, A second A-phase auxiliary reactor 892 is connected in series, and a second A-phase main reactor 77, a third A-phase auxiliary reactor 983, between the A-phase input end 11 and the second A-phase output end 31, Fourth A-phase auxiliary reactor 893 is connected in series.

  The first A-phase auxiliary reactor 982 and the third A-phase auxiliary reactor 983 have their second ends on the A-phase input end 11 side, similarly to the first A-phase auxiliary reactor 98 in the sixth method. The second A-phase auxiliary reactor 982 and the fourth A-phase auxiliary reactor 983 have a first end on the A-phase input end 11 side, like the second A-phase auxiliary reactor 89 in the sixth system. .

  Similarly, in the sixth system, the first B-phase sub-reactor 78 provided between the node 42 to which the first and second B-phase main reactors 86 and 87 are connected and the B-phase input terminal 12 is connected. Instead, in the present embodiment, a first B-phase subreactor 782 and a third B-phase subreactor 783 are provided between the node 42 and the first B-phase output end 22. In this embodiment, instead of the second B-phase auxiliary reactor 99 provided between the node 42 and the B-phase input end 12, it is provided between the node 42 and the second B-phase output end 32. The second B-phase subreactor 992 and the fourth B-phase subreactor 993 are provided.

  That is, the node 42 and the B-phase input end 12 are directly connected, and the first B-phase main reactor 86, the first B-phase sub-reactor 782, between the B-phase input end 12 and the first B-phase output end 22, A second B-phase auxiliary reactor 992 is connected in series, and a second B-phase main reactor 87, a third B-phase auxiliary reactor 783, between the B-phase input end 12 and the second B-phase output end 32, Fourth B-phase auxiliary reactor 993 is connected in series.

  The first B-phase sub-reactor 782 and the third B-phase sub-reactor 783 have a second end on the A-phase input end 11 side, similarly to the first B-phase sub-reactor 78 in the sixth system. The second B-phase subreactor 992 and the fourth B-phase subreactor 993 have their first ends on the B-phase input end 12 side, similarly to the second B-phase subreactor 99 in the sixth system. .

  Similarly, in the sixth method, the first C-phase auxiliary reactor 88 provided between the node 43 to which the first and second C-phase main reactors 96 and 97 are connected and the C-phase input terminal 13 is provided. Instead, in the present embodiment, a first C-phase auxiliary reactor 882 and a third C-phase auxiliary reactor 883 are provided between the node 43 and the first C-phase output end 23. In this embodiment, instead of the second C-phase auxiliary reactor 79 provided between the node 43 and the C-phase input end 13, it is provided between the node 43 and the second C-phase output end 33. The second C-phase subreactor 792 and the fourth C-phase subreactor 793 are provided.

  That is, the node 43 and the C-phase input terminal 13 are directly connected, and the first C-phase main reactor 96, the first C-phase sub-reactor 882, between the C-phase input terminal 13 and the first C-phase output terminal 23, A second C-phase subreactor 792 is connected in series, and a second C-phase main reactor 97, a third C-phase subreactor 883, between the C-phase input end 13 and the second C-phase output end 33, A fourth C-phase auxiliary reactor 793 is connected in series.

  The first C-phase subreactor 882 and the third C-phase subreactor 883 have their second ends on the C-phase input end 13 side in the same manner as the first C-phase subreactor 88 in the sixth method. The second C-phase subreactor 792 and the fourth C-phase subreactor 793 are similar to the second C-phase subreactor 79 in the sixth method in that the first end is on the C-phase input end 13 side. .

  The first and second A phase main reactors 76 and 77, the first and third B phase sub reactors 782 and 783, and the second and fourth C phase sub reactors 792 and 793 are included in the A phase core 51. Wound around. The first and second B phase main reactors 86 and 87, the first and third C phase sub reactors 882 and 883, and the second and fourth A phase sub reactors 792 and 793 are the B phase core 52. Wound around. The first and second C phase main reactors 96 and 97, the first and third A phase sub reactors 982 and 983, and the second and fourth B phase sub reactors 992 and 993 are included in the C phase core 53. Wound around.

  On the other hand, when looking at the sixth method from the present embodiment, the first A-phase main reactor 76 is connected between the node 41 and the first A-phase output terminal 21, and the second A-phase main reactor 77 is It is connected between the node 41 and the second A-phase output terminal 31. The first A-phase subreactor 982 in the present embodiment is provided as a sixth-system A-phase subreactor 98 that also serves as the third C-phase subreactor 983. The second A-phase subreactor 892 in the present embodiment also serves as the fourth A-phase subreactor 893 and is provided as the second A-phase subreactor 89 of the sixth system. The second A-phase subreactor 89 and the first A-phase subreactor 98 are connected in series between the node 41 and the A-phase input end 11.

  The first B-phase main reactor 86 is connected between the node 42 and the first B-phase output end 22, and the second B-phase main reactor 87 is connected between the node 42 and the second B-phase output end 32. Is done. The first B-phase sub-reactor 782 in the present embodiment is also provided as the first B-phase sub-reactor 78 of the sixth system that also serves as the third B-phase sub-reactor 783. The second B-phase subreactor 992 in the present embodiment also serves as the fourth B-phase subreactor 993 and is provided as the second B-phase subreactor 99 of the sixth system. The second B-phase subreactor 99 and the first B-phase subreactor 78 are connected in series between the node and the B-phase input end 12.

  The first C-phase main reactor 96 is connected between the node 43 and the first C-phase output end 23, and the second C-phase main reactor 97 is connected between the node 43 and the second C-phase output end 33. Is done. The first C-phase auxiliary reactor 882 in the present embodiment also serves as the third C-phase auxiliary reactor 883 and is provided as the first C-phase auxiliary reactor 88 of the sixth system. The second C-phase subreactor 792 in the present embodiment also serves as the first C-phase subreactor 793 and is provided as the second C-phase subreactor 79 of the sixth system. The second C-phase subreactor 79 and the first C-phase subreactor 88 are connected in series between the node and the C-phase input end 11.

Fourth embodiment.
In the second method, the power source current iB is adopted as the current for obtaining the cancel magnetomotive force for the A phase. Therefore, a power supply current flows through each phase sub reactor in the second system. Therefore, in the present embodiment, as in the third embodiment, the current supplied to the first full-wave rectifier circuit 6 or the second full-wave rectifier circuit 7 is changed between each phase sub-reactor of the second system. Divide it so that it flows individually.

  FIG. 23 shows a specific connection system of the present embodiment. In the second method, the present embodiment replaces the A-phase auxiliary reactor 98 provided between the node 44 to which the first and second A-phase main reactors 76 and 77 are connected and the A-phase input end 11. Then, a first A-phase auxiliary reactor 984 is provided between the node 44 and the first A-phase output end 21, and a second A-phase auxiliary reactor 985 is provided between the node 44 and the second A-phase output end 31. , Respectively.

  That is, the node 44 and the A phase input end 11 are directly connected, and the first A phase main reactor 76 and the first A phase sub reactor 984 are provided between the A phase input end 11 and the first A phase output end 21. A second A-phase main reactor 77 and a second A-phase sub reactor 985 are connected in series between the A-phase input end 11 and the second A-phase output end 31.

  The first A-phase auxiliary reactor 984 and the second A-phase auxiliary reactor 985 have a second end on the A-phase input end 11 side, similar to the first A-phase auxiliary reactor 98 in the second method.

  Similarly, in the second method, instead of the B-phase auxiliary reactor 78 provided between the node 45 to which the first and second B-phase main reactors 86 and 87 are connected and the B-phase input end 12, the present system is used. In the embodiment, a first B-phase auxiliary reactor 784 is provided between the node 45 and the first B-phase output end 22, and a second B-phase auxiliary reactor 784 is provided between the node 45 and the second B-phase output end 32. Reactors 785 are respectively provided.

  That is, the node 45 and the B-phase input terminal 12 are directly connected, and the first B-phase main reactor 86 and the first B-phase sub-reactor 784 are provided between the B-phase input terminal 12 and the first B-phase output terminal 22. A second B-phase main reactor 87 and a second B-phase sub-reactor 785 are connected in series between the B-phase input terminal 12 and the second B-phase output terminal 32.

  The first B-phase subreactor 784 and the second B-phase subreactor 785 have their second ends on the B-phase input end 12 side in the same manner as the first B-phase subreactor 78 in the second method.

  Similarly, in the second system, instead of the C-phase auxiliary reactor 88 provided between the node 46 to which the first and second C-phase main reactors 96 and 97 are connected and the C-phase input end 13, In the embodiment, a first C-phase auxiliary reactor 884 is provided between the node 46 and the first C-phase output end 23, and a second C-phase auxiliary reactor 884 is provided between the node 46 and the second C-phase output end 33. Reactors 885 are respectively provided.

  That is, the node 46 and the C-phase input end 13 are directly connected, and the first C-phase main reactor 96 and the first C-phase sub-reactor 884 are provided between the C-phase input end 13 and the first C-phase output end 23. The second C-phase main reactor 97 and the second C-phase sub-reactor 885 are connected in series between the C-phase input end 13 and the second C-phase output end 33.

  The first C-phase subreactor 884 and the second C-phase subreactor 885 have their second ends on the B-phase input end 12 side, similarly to the first C-phase subreactor 88 in the second method.

  The first and second A phase main reactors 76 and 77 and the first and second B phase sub reactors 784 and 785 are wound around the A phase core 51. First and second B phase main reactors 86 and 87 and first and second C phase sub reactors 884 and 885 are wound around B phase core 52. The first and second C-phase main reactors 96 and 97 and the first and second A-phase auxiliary reactors 984 and 985 are wound around the C-phase core 53.

Fifth embodiment.
The interphase reactor shown in the first to fourth embodiments generates two currents having a phase difference of 30 degrees for one phase, and 360 pulses / 30 degrees = 12 pulses per cycle. The method employed in the generated multiple rectifier circuit has been described.

  However, conventionally, a multiple rectifier circuit that generates three currents having a phase difference of 20 degrees for each phase and generates 360 pulses / 20 degrees = 18 pulses per cycle has also been proposed ( For example, Non-Patent Document 3). Even in this type of multiple rectifier circuit, the third method shown in the first embodiment, the sixth method shown in the second embodiment, and the third embodiment are shown. A modification of the sixth method and a modification of the second method shown in the fourth embodiment can be used.

  FIG. 24 is a circuit diagram showing a configuration of a multiple rectifier circuit that can use the interphase reactor according to the present invention. In the interphase reactor 5, A-phase, B-phase, and C-phase power source currents iA, iB, and iC are respectively supplied to the A-phase, B-phase, and C-phase three-phase power sources 1a and 1b via the reactors La, Lb, and Lc, respectively. , 1c.

  From the interphase reactor 5, A-phase currents ia1, ia2, and ia3, B-phase currents ib1, ib2, and ib3, and C-phase currents ic1, ic2, and ic3 are output.

  The A-phase current ia1, B-phase current ib1, and C-phase current ic1 are fed by the first full-wave rectifier circuit 6, and the A-phase current ia2, B-phase current ib2 and C-phase current ic2 are fed by the second full-wave rectifier circuit 7. The A-phase current ia3, the B-phase current ib3, and the C-phase current ic3 are respectively full-wave rectified by the third full-wave rectifier circuit 8. The output sides of the first full-wave rectifier circuit 6, the second full-wave rectifier circuit 7, and the third full-wave rectifier circuit 8 are connected in parallel between the output terminals P and Q.

  Capacitors C1 and C2 are connected in series between the output terminals P and Q via a neutral point N. A load 9 is also connected between the output terminals P and Q. Since the configuration of the third full-wave rectifier circuit 8 is the same as that of the first full-wave rectifier circuit 6 and the second full-wave rectifier circuit 7 (see FIG. 2), the description thereof is omitted.

  Then, the A phase current ia1, the B phase current ib1, the C phase current, the A phase current ia2, the B phase current ib2, and the C phase current ic2 are supplied to the terminals a1, b1, c1, a2, b2, and c2, respectively. . Similarly, A-phase current ia3, B-phase current ib3, and C-phase current ic3 are supplied to terminals a3, b3, and c3 provided on the input side of the third full-wave rectifier circuit 8, respectively.

  FIG. 25 is a circuit diagram showing a configuration of interphase reactor 5 employed in the present embodiment. An interphase reactor 55 that employs the configuration of the interphase reactor shown in the first to fourth embodiments is provided, and a flow divider 54 is provided.

  The shunt 54 divides the power source current iA to generate a first A-phase current i12a and a second A-phase current ia3. The power supply current iB is shunted to generate a first B-phase current i12b and a second B-phase current ib3. Further, the power source current iC is shunted to generate a first C-phase current i12c and a second C-phase current ic3. The first A-phase current i12a, the first B-phase current i12b, and the first C-phase current i12c are supplied to the A-phase input end 11, the B-phase input end 12, and the C-phase input end 13 of the interphase reactor 55, respectively. Is done.

  FIG. 26 is a phasor diagram showing the phase relationship of the currents iA, iB, iC, ia1, ib1, ic1, ia2, ib2, ic2, ia3, ib3, ic3 required in the multiple rectifier circuit shown in FIG. . Since the power supply currents iA, iB, iC are supplied from the three-phase power supplies 1a, 1b, 1c, they are shifted by 120 degrees. The power supply current iA, the first A-phase current i12a, and the second A-phase current ia3 are in phase. Similarly, the power supply current iB, the first B-phase current i12b, and the second B-phase current ib3 are in phase, and the power supply current iC, the first C-phase current i12c, and the second C-phase current ic3. Is in phase.

  In the same manner as in the first to fourth embodiments, the interphase reactor 55 receives the A-phase currents ia1 and ia2 from the first A-phase current i12a, the B-phase currents ib1 and ib2 from the first B-phase current, 1 to C phase current ic1. ic2 is generated respectively. However, the phase difference is set to 20 degrees instead of 15 degrees.

  The shunt 54 includes terminals 501 to 509 and can be configured as follows, for example. Terminals 501, 502, and 503 are supplied with power supply currents iA, iB, and iC, respectively. Terminals 504, 505, and 506 output a first A-phase current i12a, a first B-phase current i12b, and a first C-phase current i12c, respectively. Connected to phase input 13. Terminals 507, 508, and 509 output a second A-phase current ia3, a second B-phase current ib3, and a third C-phase current ic3, respectively.

  A reactor 511 is provided between the terminals 501 and 504, a reactor 512 is provided between the terminals 501 and 507, a reactor 513 is provided between the terminals 502 and 505, a reactor 514 is provided between the terminals 502 and 508, and a terminal 503 is provided. , 506 is provided with a reactor 515, and terminals 503, 509 are provided with a reactor 516. The first end of the reactor 511 and the second end of the reactor 512 are on the terminal 501 side, the first end of the reactor 513 and the second end of the reactor 514 are on the terminal 502 side, the first end of the reactor 515 and the reactor 516 The second end is on the terminal 503 side.

  By adopting such a configuration, an 18-pulse multiple rectifier circuit can be realized, the fundamental component can be balanced by canceling the magnetomotive force, and harmonic components other than the 18n ± 1st order can be suppressed. it can.

  FIG. 27 is a phasor diagram showing the relationship of magnetomotive force when the third system is adopted as the interphase reactor 55 and the magnetomotive force of the fundamental wave component is not generated. Similarly to FIG. 9, the magnetomotive force W3 · ia1 generated in the first A-phase main reactor 76, the magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77, and the B-phase subreactor 78 The sum of the cancel magnetomotive force W2 · ib1 generated in step S is zero.

  In the third method, phasors W3, ia1, W2, ib1 form 60 degrees, and phasors W1, ia2, W2, ib1 form an angle of 80 degrees. Since ia1 = ia2 = ib1 from the equilibrium condition, W1: W2: W3 is approximately 1: 0.742: 1.137 to obtain the above phase shift, cancellation of fundamental magnetomotive force, and equilibration. . More precisely, W2 / W1 = 2sin (20 °) · cos (10 °) + 2sin (20 °) · sin (10 °) / tan (60 °) = 2sin (40 °) / √3, and W3 / W1 = 1 + 2sin (20 °) · sin (10 °) / sin (60 °) = 2sin (80 °) / √3.

  FIG. 28 is a phasor diagram showing the relationship of magnetomotive force when the sixth system is adopted as the interphase reactor 55 and the magnetomotive force of the fundamental wave component is not generated. As in FIG. 18, the magnetomotive force W1 · ia1 generated in the first A-phase main reactor 76, the magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77, and the second C phase. The sum of the cancel magnetomotive force (−W2) · i12c generated in the sub-reactor 79 and the cancel magnetomotive force W2 · i12b generated in the first B-phase subreactor 78 becomes zero.

  In the sixth system, phasor (-W2) .iC, W2, .ib forms 120 degrees, and phasor (-W1) .ia2, W2, i12b forms an angle of 100 degrees. Since ia1 = ia2 = i12b / (2 · cos (π / 12)) = i12c / (2 · cos (π / 12)) from the condition of equilibrium, the above phase shift, cancellation of fundamental magnetomotive force, and equilibrium W1: W2 is approximately 1: 0.210 in order to obtain More precisely, W2 / W1 = sin (20 °) / cos (30 °) / 2 cos (20 °) = tan (20 °) / √3.

  FIG. 29 is a phasor diagram showing the relationship of magnetomotive force when the second system is adopted as the interphase reactor 55 and the magnetomotive force of the fundamental wave component is not generated. As in FIG. 7, the magnetomotive force W3 · ia1 generated in the first A-phase main reactor 76, the magnetomotive force (−W1) · ia2 generated in the second A-phase main reactor 77, and the B-phase subreactor 78. The sum of the cancel magnetomotive force W2 · i12b generated in step S is zero.

  In the second method, the phasor (-W2) .iC, W2, .ib forms 120 degrees, and the phasor (-W1) .ia2, W2, i12b forms an angle of 100 degrees. From the equilibrium condition, ia1 = ia2 = i12b / (2 · cos (π / 12)) = i12c / (2 · cos (π / 12)) In order to obtain the following, W1: W2 is approximately 1: 0.532, and W3 = W1 + W2. This ratio is also shown in Non-Patent Document 3. More precisely, W2 / W1 = 2sin (20 °) · sin (30 °) / sin (40 °) = cos (20 °) / 2, W3 / W1 = 2cos (40 °).

  As described in the fourth embodiment, the current supplied to the first full-wave rectifier circuit 6 or the second full-wave rectifier circuit 7 flows through each phase sub-reactor of the second system individually. Even if it is provided separately, this ratio does not change.

It is a circuit diagram which shows the structure of the multiple rectifier circuit which can apply the interphase reactor concerning this invention. It is a circuit diagram which illustrates the composition of a full wave rectifier circuit. It is a phasor figure which shows the phase relationship of various electric currents. It is a connection diagram which shows the 1st system of an interphase reactor. It is a phasor figure in a 1st system. It is a connection diagram which shows the 2nd system of an interphase reactor. It is a phasor figure in a 2nd system. It is a connection diagram which shows the 3rd system of an interphase reactor. It is a phasor figure in the 3rd system concerning a 1st embodiment. It is the graph which simulated the time change of the voltage and flux linkage in the 1st system. It is the graph which simulated the time change of the voltage and flux linkage in the 2nd system. It is the graph which simulated the time change of the voltage and linkage flux in the 3rd system concerning a 1st embodiment. It is a connection diagram which shows the 4th system of an interphase reactor. It is a phasor figure in the 4th system. It is a connection diagram which shows the 5th system of an interphase reactor. It is a phasor figure in a 5th system. It is a connection diagram which shows the 6th system of an interphase reactor. It is a phasor figure in the 6th system concerning a 2nd embodiment. It is the graph which simulated the time change of the voltage and linkage flux in a 4th system. It is the graph which simulated the time change of the voltage and flux linkage in the 5th system. It is the graph which simulated the time change of the voltage and linkage flux in the 6th system concerning a 2nd embodiment. It is a connection diagram which shows the interphase reactor concerning 3rd Embodiment. It is a connection diagram which shows the interphase reactor concerning 4th Embodiment. It is a circuit diagram which shows the structure of the multiple rectifier circuit which can utilize the interphase reactor concerning this invention. It is a circuit diagram which shows the structure of the interphase reactor employ | adopted in 5th Embodiment. It is a phasor figure which shows the phase relationship of various electric currents. It is a phasor figure in a 3rd system. It is a phasor figure in a 6th system. It is a phasor figure in a 2nd system.

Explanation of symbols

5,55 Balanced reactor 6-8 Full wave rectifier circuit 11-13 Input end 21-23, 31-33 Output end 51-53 Core 54 Shunt 76, 77, 86, 87, 96, 97 Main reactor 78, 79, 88, 89, 98, 99, 782 to 785, 792, 793, 882 to 885, 892.893, 982 to 985, 992, 993 Deputy reactor

Claims (11)

A first phase input end (11), a second phase input end (12), and a third phase input end (13);
The first and second first phase output terminals (21, 31), the first and second second phase output terminals (22, 32), and the first and second third phase output terminals (23, 33). )When,
A first first-phase main reactor (76) and a first first phase connected in series between the first-phase input terminal (11) and the first first-phase output terminal (21) A sub-reactor (982), a second first-phase sub-reactor (892),
A second first phase main reactor (77), a third first phase, connected in series between the first phase input end (11) and the second first phase output end (31). A sub-reactor (983), a fourth first-phase sub-reactor (893),
A first second phase main reactor (86) and a first second phase connected in series between the second phase input end (12) and the first second phase output end (22) A sub-reactor (782), a second second-phase sub-reactor (992),
A second second-phase main reactor (87) and a third second-phase connected in series between the second-phase input terminal (12) and the second second-phase output terminal (32) A sub-reactor (783), a fourth second-phase sub-reactor (993),
A first third-phase main reactor (96) and a first third-phase connected in series between the third-phase input terminal (13) and the first third-phase output terminal (23) A sub-reactor (882), a second third-phase sub-reactor (792),
A second third-phase main reactor (97) connected in series between the third-phase input end (13) and the second third-phase output end (33); a third third-phase A sub-reactor (883), a fourth third-phase sub-reactor (793),
The first first phase main reactor (76), the second first phase main reactor (77), the first second phase sub reactor (782), and the third second phase sub reactor. A reactor (783), the second third-phase secondary reactor (792), and the fourth third-phase secondary reactor (793) are wound around the first core (51),
The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the first The second phase input reactor (12) side of the second phase sub reactor, the second phase input end (12) side of the third second phase sub reactor, and the second third phase sub reactor. The first third phase output end (23) side of the fourth third phase sub reactor and the second third phase output end (33) side of the fourth third phase sub-reactor are of the same polarity,
The first second phase main reactor (86), the second second phase main reactor (87), the first third phase sub reactor (882), and the third third phase sub reactor. A reactor (883), the second first phase auxiliary reactor (892), and the fourth first phase auxiliary reactor (893) are wound around the second core (52),
The second phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the first The third phase sub-reactor of the third phase input end (13) side, the third third phase sub reactor of the third phase input end (13) side, and the second first phase sub reactor of the second phase reactor. The first first-phase output end (21) side of the first-phase sub-reactor and the second first-phase output end (31) side of the fourth first-phase subreactor have the same polarity,
The first third-phase main reactor (96), the second third-phase main reactor (97), the first first-phase sub-reactor (982), and the third first-phase sub-reactor A reactor (983), the second second-phase auxiliary reactor (992), and the fourth second-phase auxiliary reactor (993) are wound around a third core (53),
The third phase input end (13) side of the first third phase main reactor, the second third phase output end (33) side of the second third phase main reactor, and the first The first phase input terminal (11) side of the first phase sub reactor, the first phase input end (11) side of the third first phase sub reactor, and the second second phase sub reactor An interphase reactor in which the first second-phase output end (22) side of the second-phase sub-reactor and the second second-phase output end (32) side of the fourth second-phase subreactor have the same polarity. The first first phase main reactor (76) is connected between a first node (41) and the first first phase output end (21),
The second first phase main reactor (77) is connected between the first node (41) and the second first phase output end (31),
The first first phase secondary reactor (98; 982) is also used as the third third phase secondary reactor (983),
The second first phase auxiliary reactor (89; 892) also serves as the fourth first phase auxiliary reactor (893),
The second first phase auxiliary reactor (89) and the first first phase auxiliary reactor (98) are connected in series between the first node and the first phase input terminal (11),
The first second phase main reactor (86) is connected between a second node (42) and the first second phase output end (22);
The second second phase main reactor (87) is connected between the second node (42) and the second second phase output end (32),
The first second phase auxiliary reactor (78; 782) is also used as the third second phase auxiliary reactor (783),
The second second phase auxiliary reactor (99; 992) also serves as the fourth second phase auxiliary reactor (993),
The second second phase sub reactor (99) and the first second phase sub reactor (78) are connected in series between the second node and the second phase input end (12),
The first third phase main reactor (96) is connected between a third node (43) and the first third phase output end (23);
The second third-phase main reactor (97) is connected between the third node (43) and the second third-phase output end (33),
The first third-phase secondary reactor (88; 882) also serves as the third third-phase secondary reactor (883),
The second third phase auxiliary reactor (79; 792) is also used as the first third phase auxiliary reactor (793),
The second third phase sub reactor (79) and the first third phase sub reactor (88) are connected in series between the third node and the third phase input end (11). The interphase reactor according to claim 1. All the main reactors (76, 77, 86, 87, 96, 97) have the first number of windings (W1),
All the secondary reactors (782,783,792,793,892,893,882,883,982,983,992,993; 78,79,88,89,98,99) all have the second number of windings. (W2), each wound
The interphase reactor according to claim 1 or 2, wherein a ratio of the second winding number to the first winding number is (2√3-3) / 3. All the main reactors (76, 77, 86, 87, 96, 97) have the first number of windings (W1),
All the secondary reactors (782,783,792,793,892,893,882,883,982,983,992,993; 78,79,88,89,98,99) all have the second number of windings. (W2), each wound
The interphase reactor according to claim 1 or 2, wherein a ratio of the second winding number to the first winding number is tan (20 °) / √3. A first phase input end (11), a second phase input end (12), and a third phase input end (13);
The first and second first phase output terminals (21, 31), the first and second second phase output terminals (22, 32), and the first and second third phase output terminals (23, 33). )When,
A first first phase main reactor (76) and a first phase sub reactor (series) connected in series between the first phase input end (11) and the first first phase output end (21). 98)
A first second phase main reactor (86) and a second phase sub reactor (series) connected in series between the second phase input end (12) and the first second phase output end (22). 78),
A first third-phase main reactor (96) and a third-phase sub-reactor (series) connected in series between the third-phase input terminal (13) and the first third-phase output terminal (23). 88)
A second first phase main reactor (77) connected between the first phase input end (11) and the second first phase output end (31);
A second second phase main reactor (87) connected between the second phase input end (12) and the second second phase output end (32);
A second third-phase main reactor (97) connected between the third-phase input end (13) and the second third-phase output end (32);
The first first-phase main reactor (76), the second first-phase main reactor (77), and the second-phase auxiliary reactor (78) are wound around a first core (51). ,
The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the second The second phase input end (12) side of the phase / sub reactor has the same polarity,
The first second-phase main reactor (86), the second second-phase main reactor (87), and the third-phase sub-reactor (88) are wound around a second core (52). ,
The second phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the third The third phase input end (13) side of the phase sub reactor is the same polarity,
The first third-phase main reactor (96), the second third-phase main reactor (97), and the first-phase auxiliary reactor (98) are wound around a third core (53). ,
The third phase input end (13) side of the first third phase main reactor, the second third phase output end (33) side of the second third phase main reactor, and the first phase said first first-phase input terminal of the auxiliary reactor (11) side and is Ri same polarity der,
The second first-phase main reactor (77), the second second-phase main reactor (87), and the second third-phase main reactor (97) all have a first winding number ( W1)
The first phase auxiliary reactor (98), the second phase auxiliary reactor (78), and the third phase auxiliary reactor (88) are all the second number of windings (W2),
The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) all have a third winding number ( W3)
Each wound,
Wherein the first winding number, and the number of second winding, the ratio of the third winding number √3: 1: 2 der Ru, interphase reactor. A first phase input end (11), a second phase input end (12), and a third phase input end (13);
The first and second first phase output terminals (21, 31), the first and second second phase output terminals (22, 32), and the first and second third phase output terminals (23, 33). )When,
A first first phase main reactor (76) and a first phase sub reactor (series) connected in series between the first phase input end (11) and the first first phase output end (21). 98)
A first second phase main reactor (86) and a second phase sub reactor (series) connected in series between the second phase input end (12) and the first second phase output end (22). 78),
A first third-phase main reactor (96) and a third-phase sub-reactor (series) connected in series between the third-phase input terminal (13) and the first third-phase output terminal (23). 88)
A second first phase main reactor (77) connected between the first phase input end (11) and the second first phase output end (31);
A second second phase main reactor (87) connected between the second phase input end (12) and the second second phase output end (32);
A second third-phase main reactor (97) connected between the third-phase input end (13) and the second third-phase output end (32);
With
The first first-phase main reactor (76), the second first-phase main reactor (77), and the second-phase auxiliary reactor (78) are wound around a first core (51). ,
The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the second The second phase input end (12) side of the phase / sub reactor has the same polarity,
The first second-phase main reactor (86), the second second-phase main reactor (87), and the third-phase sub-reactor (88) are wound around a second core (52). ,
The second phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the third The third phase input end (13) side of the phase sub reactor is the same polarity,
The first third-phase main reactor (96), the second third-phase main reactor (97), and the first-phase auxiliary reactor (98) are wound around a third core (53). ,
The third phase input end (13) side of the first third phase main reactor, the second third phase output end (33) side of the second third phase main reactor, and the first The first sub-reactor has the same polarity as the first first phase input end (11) side,
The second first-phase main reactor (77), the second second-phase main reactor (87), and the second third-phase main reactor (97) all have a first winding number ( W1)
The first phase auxiliary reactor (98), the second phase auxiliary reactor (78), and the third phase auxiliary reactor (88) are all the second number of windings (W2),
The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) all have a third winding number ( W3)
Each wound,
The ratio of the second winding number to the first winding number is 2 sin (40 °) / √3,
The interphase reactor , wherein the ratio of the third winding number to the first winding number is 2 sin (80 °) / √3 . A first phase input end (11), a second phase input end (12), and a third phase input end (13);
The first and second first phase output terminals (21, 31), the first and second second phase output terminals (22, 32), and the first and second third phase output terminals (23, 33). )When,
A first first-phase main reactor (76) and a first first phase connected in series between the first-phase input terminal (11) and the first first-phase output terminal (21) Deputy reactor (984),
A second first phase main reactor (77), a second first phase, connected in series between the first phase input end (11) and the second first phase output end (31). Deputy reactor (985),
A first second phase main reactor (86) and a first second phase connected in series between the second phase input end (12) and the first second phase output end (22) Deputy reactor (784),
A second second-phase main reactor (87) and a second second phase connected in series between the second-phase input terminal (12) and the second second-phase output terminal (32). Deputy reactor (785),
A first third-phase main reactor (96) and a first third-phase connected in series between the third-phase input terminal (13) and the first third-phase output terminal (23) Deputy reactor (884),
A second third-phase main reactor (97) and a second third-phase connected in series between the third-phase input terminal (13) and the second third-phase output terminal (33) Deputy reactor (885) and
With
The first first phase main reactor (76), the second first phase main reactor (77), the first second phase sub reactor (784), and the second second phase sub reactor. The reactor (785) is wound around the first core (51),
The first phase input end (11) side of the first first phase main reactor, the second first phase output end (31) side of the second first phase main reactor, and the first And the second phase input end (12) side of the second phase sub reactor and the second phase input end (12) side of the second second phase sub reactor are of the same polarity,
The first second phase main reactor (86), the second second phase main reactor (87), the first third phase sub reactor (884), and the second third phase sub reactor. The reactor (885) is wound around the second core (52),
The third phase input end (12) side of the first second phase main reactor, the second second phase output end (32) side of the second second phase main reactor, and the first The third phase sub-reactor of the third phase input end (13) side and the second third phase sub-reactor of the third phase input end (13) side have the same polarity,
The first third phase main reactor (96), the second third phase main reactor (97), the first first phase auxiliary reactor (984), and the second first phase auxiliary reactor. The reactor (985) is wound around the third core (53),
The third phase input end (13) side of the first third phase main reactor, the second first phase output end (33) side of the second third phase main reactor, and the first An interphase reactor in which the second phase input end (11) side of the first phase subreactor and the second phase input end (11) side of the second first phase subreactor have the same polarity .   The second first-phase main reactor (77), the second second-phase main reactor (87), and the second third-phase main reactor (97) all have a first winding number ( W1)
  All the secondary reactors have the second number of windings (W2),
  The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) all have a third winding number ( W1 + W2)
Each wound,
  The ratio of the first winding number, the second winding number, and the third winding number is 1: ((√3-1) / 2): ((√3 + 1) / 2). 7. Interphase reactor according to 7. The second first-phase main reactor (77), the second second-phase main reactor (87), and the second third-phase main reactor (97) all have a first winding number ( W1)
All the secondary reactors have the second number of windings (W2),
The first first-phase main reactor (76), the first second-phase main reactor (86), and the first third-phase main reactor (96) all have a third winding number ( W1 + W2)
Each wound,
The ratio of the second winding number to the first winding number is cos (20 °) / 2.
The interphase reactor according to claim 7, wherein a ratio of the third winding number to the first winding number is 2 cos (40 °) .   The interphase reactor according to any one of claims 3, 5, and 8;
  Full-wave rectification is performed on the current obtained from the first first-phase output terminal (21), the first second-phase output terminal (22), and the first third-phase output terminal (23). 1 three-phase full-wave rectifier circuit (6);
  Full-wave rectification of the current obtained from the second first-phase output terminal (31), the second second-phase output terminal (32), and the second third-phase output terminal (33), A second three-phase full-wave rectifier circuit (7) connected in parallel with the first three-phase full-wave rectifier circuit on its output side;
A three-phase multiple rectifier circuit. The interphase reactor (55) according to any one of claims 4, 6, and 9,
The three-phase current is input, the first (iA) of the three-phase current is shunted, and the first first-phase current (i12a) and the second first-phase current (ia3) are The second (iB) is shunted to shunt the first second phase current (i12b), the second second phase current (ib3), and the third (iC) of the three-phase current to shunt the first first current (i12b). A three-phase current (i12c) and a second third-phase current (ic3) are generated, respectively, and the first first-phase current (i12a), the first second-phase current (i12b), and the first Current divider (54) is supplied to the first phase input terminal (11), the second phase input terminal (12), and the third phase input terminal (13) of the interphase reactor, respectively. )When,
Full-wave rectification of the current obtained from the first first-phase output terminal (21), the first second-phase output terminal (22), and the first third-phase output terminal (23) A first three-phase full-wave rectifier circuit (6);
The current obtained from the second first phase output end (31), the second second phase output end (32), and the second third phase output end (33) is full-wave rectified. A second three-phase full-wave rectifier circuit (7) connected in parallel with the first three-phase full-wave rectifier circuit on its output side;
The second first phase current (ia3), the second second phase current (ib3), and the second third phase current (ic3) are full-wave rectified, and the first three-phase current (ia3) A three-phase multiple rectifier circuit comprising a third three-phase full-wave rectifier circuit (8) connected in parallel with the phase full-wave rectifier circuit.

Images