JP2009089553A - Rotating machine and power system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating machine suppressing increase in manufacturing cost. <P>SOLUTION: The rotating machine 2 is equipped with windings L1 to L3 and a switching circuit 1. One ends of the windings L1 to L3 are connected to end parts P11 to P13, and the other ends are connected to the end parts P21 to P23, respectively. The switching circuit 1 is equipped with switches SG1 to SG3. The switches SG1 to SG3 are connected between the one ends of the windings L1 to L3 and the neutral point N. The windings L1 to L3 are functioned as an armature winding by making all switches SG1 to SG3 conductive. When multi-phase AC power is supplied from a multi-phase AC power source E1 to the end parts P11 to P13 and all the switches SG1 to SG3 are made nonconductive, the windings L1 to L3 are functioned as an input reactor to a power converter 3. Thus, the manufacturing cost is suppressed because it is not required to newly install the input reactor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotating machine and a power system, for example, a rotating machine applied to a hybrid power supply system or an electric vehicle.

  Patent Document 1 describes an electric vehicle equipped with a charging device. The charging device is supplied with charging power from a commercial AC power source that is distributed to ordinary households or sales offices. At this time, commercial AC power is supplied to the charging device via an LC filter composed of a reactor and a capacitor.

  And the direct-current power of a charging device is converted into alternating current power, it supplies to a motor, and the driving force for driving | running | working is obtained from this motor.

  Patent Document 2 is disclosed as a technique related to the present invention.

JP 2000-152408 A US Patent Application Publication No. 2002/0057030

  In the technique described in Patent Document 1, since commercial AC power is supplied to the electric vehicle via the reactor, the manufacturing cost is increased by the amount of the reactor.

  Moreover, also in the hybrid power supply system that supplies either the generator or the commercial power source to the load, the power from the commercial power source is supplied to the load via the reactor. Therefore, the manufacturing cost in the hybrid power supply system is increased by the reactor.

  Then, an object of this invention is to provide the rotary machine which can reduce manufacturing cost.

  A first aspect of the rotating machine according to the present invention includes first to Nth windings (L1 to L3; L11 to L14, L21 to L24, L31 to L34) each having one end and the other end, First to Nth ends (P11 to P13) connected to the one end of each of the first to Nth windings, and the other end of each of the first to Nth windings. N + 1 to Nth end portions (P21 to P23) connected to each other and the first to Nth windings connected to each other to function as an N-phase armature winding And a switch circuit (1) for selectively switching between the first to Nth windings and a second connection relationship for separating the first to Nth windings from each other, and a rotor (GR1).

  A second aspect of the rotating machine according to the present invention is the rotating machine according to the first aspect, further comprising a neutral point (N), wherein the switch circuit (1) includes the first to the Nth points. And a plurality of first switches (SG1 to SG3; SM1 to SM3) provided between the one end of each of the windings (L1 to L3) and the neutral point, All are conducted to realize the first connection relationship, and all of the plurality of first switches are non-conducted to realize the second connection relationship.

  A third aspect of the rotating machine according to the present invention is the rotating machine according to the first aspect, wherein the switch circuit (1) includes the other end of the kth winding and the k + 1th winding. A plurality of first switches provided between the one end of the first winding (k is 1 to N-1) and between the other end of the Nth winding and the one end of the first winding. (SG1 to SG3; SM1 to SM3), and all of the plurality of first switches are turned on to realize the first connection relationship, and all of the plurality of first switches are turned off. Two connection relationships are realized.

  A fourth aspect of the rotating machine according to the present invention is the rotating machine according to the second or third aspect, wherein the switch circuit (1) includes the first to Nth windings (L1 to L3). ) And a plurality of second switches (SE1 to SE3) provided between the one end and the first to Nth ends (P11 to P13), respectively. The plurality of second switches (SE1 to SE3) are turned off / conducted corresponding to the conduction / nonconduction of the switches (SG1 to SG3; SM1 to SM3), respectively.

  A fifth aspect of the rotating machine according to the present invention is the rotating machine according to any one of the first to fourth aspects, wherein each of the first to Nth windings (L1 to L3) is A plurality of winding portions (L11 to L14, L21 to L24, L31 to L34), and at least two of the plurality of winding portions are mutually connected for each of the first to Nth windings. Are further provided with a plurality of third switches (SP1 to SP6, SR1 to SR3) that are selectively connected in series or in parallel.

  A sixth aspect of the rotating machine according to the present invention is the rotating machine according to any one of the first to fifth aspects, wherein each of the first to Nth windings is connected in series with each other. A plurality of winding portions, and connection points provided by selecting positions of at least three positions of both ends of each of the plurality of winding portions, the first to Nth windings In each, at least one winding portion is sandwiched between any one of the connection points and the other connection points, and in the first connection relationship, the first pair of connection points are the one end and the one end. It functions as the other end, and in the second connection relationship, the second pair of connection points different from the first pair functions as the one end and the other end.

  According to a first aspect of the power system of the present invention, an AC is supplied from the rotating machine (G1) according to any one of the first to sixth aspects and the (N + 1) th to second Nth ends (P21 to P23). A power conversion device (3) for inputting a voltage and converting the voltage into a DC voltage.

  A second aspect of the power system according to the present invention includes a rotating machine (M1) according to any one of the first to sixth aspects, the first and second input / output terminals (PH1, PL1), In the second connection relationship, the AC voltage input from the (N + 1) th to (2N) ends (P21 to P23) is converted into a DC voltage and applied between the first and second input / output terminals, In the first connection relation, a DC voltage input from the first and second input / output terminals is converted into an AC voltage, and the first to Nth terminals are passed through the N + 1 to Nth ends. A power conversion device (3) for supplying to the windings is further provided.

  A third aspect of the power system according to the present invention is the power conversion system according to the first or second aspect, wherein the rotating machine is a DC brushless rotating machine.

  The 4th aspect of the electric power system which concerns on this invention is a power conversion system which concerns on the 1st or 2nd aspect, Comprising: The said rotary machine is an induction machine.

  According to the first aspect of the rotating machine according to the present invention, in the second connection relation, the N-phase AC power is supplied to the first to N-th ends, so that the N-phase AC power is changed from the first to N-th. Can be output to the (N + 1) th to (2N) th ends through the windings. Therefore, the input side of the converter or the input side of the rectifier is connected to the (N + 1) th to 2nd N ends, and the 1st to Nth windings function as input reactors. Therefore, the first to Nth windings that function as N-phase armature windings in the first connection relationship can be made to function as input reactors in the second connection relationship. Therefore, it is necessary to newly provide an input reactor. The manufacturing cost can be reduced.

  According to the 2nd aspect of the rotary machine which concerns on this invention, by making all the 1st switches into conduction, the 1st thru | or Nth winding can be functioned as an N-phase armature winding of a star connection. it can.

  According to the third aspect of the rotating machine according to the present invention, all the first switches are turned on, so that the first to Nth windings are N in a polygonal connection (for example, a three-phase connection in the case of three phases). It can function as a phase armature winding.

  According to the 4th aspect of the rotary machine which concerns on this invention, N phase alternating current power can be always given to a 1st thru | or Nth edge part. This is because the first switch is turned on and the second switch is turned off in the first connection relation, and the first switch is turned off and the second switch is turned on in the second connection relation.

  According to the fifth aspect of the rotating machine of the present invention, the inductances of the first to Nth windings in the first connection relationship, and the inductances of the first to Nth windings in the second connection relationship, Can be different. Therefore, the inductance as the armature winding according to the first connection relationship and the inductance as the input reactor according to the second connection relationship can be appropriately set.

  According to the sixth aspect of the rotating machine of the present invention, the inductances of the first to Nth windings in the first connection relationship, and the inductances of the first to Nth windings in the second connection relationship, Can be different. Therefore, the inductance as the armature winding according to the first connection relationship and the inductance as the input reactor according to the second connection relationship can be appropriately set.

  According to the first aspect of the electric power system of the present invention, in the first connection relationship, the rotating machine is used as a generator, and the N-phase AC voltage generated in the generator is used in the second connection relationship. The N-phase AC voltage applied to the first to N ends from the outside can be converted into a DC voltage and supplied to the load.

  According to the second aspect of the electric power system of the present invention, an N-phase AC voltage is applied to the first to Nth ends, and a DC charger is connected to each of the first and second input / output terminals. The DC charger can be charged with the N-phase AC voltage in the first connection relationship, and the rotating machine can be driven as an electric motor using the DC voltage charged in the DC charger in the second connection relationship.

  According to the 3rd aspect of the electric power system which concerns on this invention, a highly efficient rotary machine can be used.

  According to the 4th aspect of the electric power system which concerns on this invention, the rotary machine comparatively small and excellent in durability can be used.

First embodiment.
FIG. 1 shows a conceptual configuration of an example of a hybrid power supply system using a rotating machine according to an embodiment. The hybrid power supply system includes a rotating machine 2, a multiphase AC power supply E1, a power converter 3, input / output terminals PH1 and PL1, a smoothing capacitor C1, and a load LD1.

  The rotating machine 2 is used as a generator G1, and includes windings L1 to L3, a switch circuit 1, a rotor GR1, and ends P11 to P13, P21 to P23.

  Each of the windings L1 to L3 has one end and the other end. The end portions P11 to P13 are connected to one ends of the windings L1 to L3, respectively. The end portions P21 to P23 are connected to the other ends of the windings L1 to L3, respectively.

  The switch circuit 1 selectively switches between a first connection relationship for connecting the windings L1 to L3 to function as an armature winding and a second connection relationship for disconnecting the windings L1 to L3 from each other. . As a more specific example, the switch circuit 1 has a plurality of switches SG1 to SG3. The switches SG1 to SG3 are provided between one end of the windings L1 to L3 and the neutral point N, respectively.

  And the 1st connection relation is realized by making all the switches SG1-SG3 conduct. More specifically, by making all the switches SG1 to SG3 conductive, the windings L1 to L3 can function as an armature winding having a star connection. Further, the second connection relationship is realized by turning off all the switches SG1 to SG3. More specifically, the windings L1 to L3 can be separated from each other.

  The rotating machine 2 may be any type of rotating machine, for example, a DC brushless rotating machine. In this case, a highly efficient rotating machine can be used. Moreover, an induction machine may be sufficient. In this case, a rotating machine that is relatively small and excellent in durability can be used. The same applies to rotating machines according to other embodiments described later.

  The multiphase AC power supply E1 is, for example, a commercial power supply three-phase AC power supply, and is connected to the ends P11 to P13 via the switches SE1 to SE3. Three-phase AC power can be supplied to the end portions P11 to P13 by making all the switches SE1 to SE3 conductive. As will be described later, the switches SE1 to SE3 are not essential requirements.

  The power converter 3 converts AC power input from the ends P21 to P23 into DC power and supplies the DC power to the input / output terminals PH1 and PL1. In FIG. 1, for example, the power converter 3 includes high arm side switch elements S11, S21, and S31, low arm side switch elements S12, S22, and S32, and diodes D11, D21, D31, D12, It is a converter provided with D22 and D32. Note that the power converter 3 may be a rectifier configured by a diode, for example.

  The smoothing capacitor C1 is connected between the input / output terminals PH1 and PL1. The DC power supplied to the input / output terminals PH1 and PL1 is smoothed by the smoothing capacitor C1 and supplied to the load LD1.

  The hybrid power supply system having such a configuration can be operated as follows. For example, all the switches SE1 to SE3 are made non-conductive and all the switches SG1 to SG3 are made conductive (first connection relationship), so that the multiphase AC power (three-phase AC power) generated by the generator G1 is loaded. It can be supplied to LD1.

  More specifically, at this time, a three-phase AC voltage is generated in the windings L1 to L3 by the rotation operation of the rotor GR1. The three-phase AC voltage is input to the power converter 3 through the ends P21 to P23, converted into a DC voltage by the power converter 3, and supplied to the load LD1 through the smoothing capacitor C1. At this time, the windings L1 to L3 function as armature windings.

  On the other hand, all the switches SE1 to SE3 are made conductive and all the switches SG1 to SG3 are made nonconductive (second connection relationship), so that the multiphase AC power from the multiphase AC power supply E1 (three-phase AC power) is obtained. Can be supplied to the load LD1.

  More specifically, at this time, the three-phase AC voltage from the multiphase AC power supply E1 is input to the power converter 3 via the end portions P11 to P13, the windings L1 to L3, and the end portions P21 to P23. Then, the three-phase AC voltage is converted into a DC voltage by the power converter 3, and supplied to the load LD1 through the smoothing capacitor C1. At this time, the windings L <b> 1 to L <b> 3 function as an input reactor for the power converter 3.

  As described above, the windings L1 to L3 that function as armature windings in the first connection relationship function as input reactors for the power converter 3 in the second connection relationship. There is no need to provide it, and the manufacturing cost can be reduced.

  In the first embodiment, the switches SE1 to SE3 are provided between the multiphase AC power supply E1 and the end portions P11 to P13. However, the present invention is not limited to this, and for example, the end portions P11 to P13. The multi-phase AC power supply E1 may be directly connected by, for example, an outlet.

  In this case, all the switches SG1 to SG3 are made non-conductive, and a plug (not shown) from the rotating machine 2 is inserted into an outlet (not shown) from the multiphase AC power supply E1 (ends P11 to P13). And the multiphase AC power supply E1 are connected), the multiphase AC power from the multiphase AC power supply E1 can be supplied to the load LD1. Moreover, when not inserted, the polyphase alternating current power from generator G1 can be supplied to load LD1 by making all the switches SG1-SG3 conduct.

  FIG. 2 shows a conceptual configuration of a hybrid power supply system using a modification of the rotating machine according to the first embodiment. In addition, the same code | symbol shows the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  In FIG. 2, the switch circuit 1 further includes switches SE1 to SE3. The switches SE1 to SE3 are provided between the windings L1 to L3 and the end portions P11 to P13.

  Even in the hybrid power supply system having such a configuration, the windings L1 to L3 that function as armature windings in the first connection relationship are connected to the power converter 3 as in the hybrid power supply system shown in FIG. It can function as an input reactor. Therefore, it is not necessary to newly provide an input reactor, and the manufacturing cost can be reduced.

  Further, since the rotating machine 2 includes the switches SE1 to SE3, a multiphase AC voltage can be constantly supplied to the ends P11 to P13 (a multiphase AC power supply E1 is connected). Even if the multiphase AC power supply E1 is always connected to the ends P11 to P13, when the input from the multiphase AC power supply E1 is unnecessary, the switches SE1 to SE3 are made non-conductive to invalidate the input. Because it can.

  The switching operation of the switches SG1 to SG3, SE1 to SE3 may be performed by a control unit (not shown) or manually by a user. However, the period in which the switches SG1 to SG3 are conductive and the period in which the switches SE1 to SE3 are conductive are not overlapped. This is because the output of the polyphase AC power supply E1 is not short-circuited.

Second embodiment.
FIG. 3 shows a conceptual configuration of an example of an electric vehicle using the rotating machine according to the embodiment. The electric vehicle includes a rotating machine 2, a multiphase AC power supply E1, a power converter 3, input / output terminals PH1 and PL1, a soft start circuit 4, and a DC charger BT1.

  The configuration of the rotating machine 2 is the same as that of the rotating machine 2 according to the first embodiment. However, while the rotating machine 2 functions as the generator G1 in the first embodiment, it is used as the motor M1 in the second embodiment. The electric motor M1 provides a driving force for traveling, for example. In FIG. 3, the portions represented by the symbols SG1, SG2, SG3, and GR1 in the first embodiment (FIG. 1) are represented by the symbols SM1, SM2, SM3, and MR1, respectively.

  About the polyphase alternating current power supply E1 and switch SE1-SE3, the structure and operation | movement are the same as that of 1st Embodiment.

  In the second connection relationship (switches SM1 to SM3 are non-conductive), the power converter 3 converts the multiphase AC voltage input from the ends P21 to P23 into a DC voltage, and outputs the DC voltage to the input / output terminals PH1 and PL1. Supply. In the first connection relationship (switches SM1 to SM3 are conductive), the DC voltage input from the input / output terminals PH1 and PL1 is converted into a polyphase AC voltage, and the windings L1 to L1 are connected via the terminals P21 to P23. To L3.

  The soft start circuit 4 transmits the DC voltage input from the input / output terminals PH1 and PL1 to the DC charger BT1 in the second connection relationship, and the DC voltage input from the DC charger BT1 in the first connection relationship. It is transmitted to the input / output terminals PH1 and PL1. The soft start circuit 4 is a circuit for gradually raising the output voltage by preventing a sudden rise of the output voltage. Note that the soft start circuit 4 is not an essential requirement and may be omitted.

  The electric vehicle having such a configuration can be operated as follows. By making all the switches SE1 to SE3 conductive and all the switches SM1 to SM3 nonconductive, the DC charger BT1 can be charged by supplying power from the multiphase AC power supply E1.

  More specifically, a three-phase AC voltage from the multiphase AC power source E1 is input to the power converter 3 via the switches SE1 to SE3, the end portions P11 to P13, the windings L1 to L3, and the end portions P21 to P23. The Then, it is converted into a DC voltage by the power converter 3 and supplied to the DC charger BT <b> 1 through the soft start circuit 4. At this time, the windings L <b> 1 to L <b> 3 function as an input reactor for the power converter 3.

  Further, by making all the switches SE1 to SE3 non-conductive and all the switches SM1 to SM3 conductive, the electric motor M1 can be driven using the DC voltage charged in the DC charger BT1.

  More specifically, a DC voltage from the DC charger BT1 is input to the power converter 3 via the soft start circuit 4 and the input / output terminals PH1 and PL1, and is converted into a three-phase AC voltage by the power converter 3. Then, it is supplied to the electric motor M1 through the end portions P21 to P23. At this time, the windings L1 to L3 function as armature windings.

  As described above, the windings L1 to L3 that function as armature windings in the first connection relationship function as input reactors for the power converter 3 in the second connection relationship, and thus a new input reactor is provided. This is not necessary, and the manufacturing cost can be reduced.

  As in the first embodiment, the switches SE1 to SE3 may be provided in the switch circuit 1, and the switches SE1 to SE3 may not be provided. In addition, the switching operation of the switches SM1 to SM3 and SE1 to SE3 may be performed by a control unit (not shown) or manually by a user.

Third embodiment.
FIG. 4 shows a conceptual configuration of an example of a rotating machine according to the third embodiment. By applying the rotating machine according to the third embodiment as the rotating machine according to the first and second embodiments, it is possible to configure a hybrid power supply system and an electric vehicle, respectively.

  The rotating machine according to the third embodiment is different from the rotating machine according to the first and second embodiments in the switch circuit 1. In the following, the case where the rotating machine according to the third embodiment is adopted as the generator G1 will be described, but the same applies to the case where it is adopted as the electric motor M1. In the figure, the reference signs to be adopted in the latter case are indicated in parentheses after the reference signs to be adopted in the former case.

  The switch circuit 1 includes switches SG1 to SG3. The switch SG1 is provided between one end of the winding L1 on the end P11 side and one end of the winding L2 on the end P22 side. The switch SG2 is provided between one end of the winding L2 on the end P12 side and one end of the winding L3 on the end P23 side. The switch SG3 is provided between one end of the winding L3 on the end P13 side and one end of the winding L1 on the end P21 side.

  And the 1st connection relation is realized by making all the switches SG1-SG3 conduct. More specifically, by making the switches SG1 to SG3 conductive, the windings L1 to L3 are caused to function as armature windings having a triangular connection. Further, by making all the switches SG1 to SG3 non-conductive, the second connection relationship can be realized and the windings L1 to L3 can be separated from each other.

Fourth embodiment.
In the first to third embodiments, the inductances of the windings L1 to L3 that function as armature windings in the first connection relationship, and the windings L1 to L3 that function as input reactors in the second connection relationship. The inductances of the two were the same. However, since the inductances of the windings L1 to L3 in the first connection relationship and the functions of the windings L1 to L3 in the second connection relationship are different from each other, they may have inductances suitable for these functions. desirable.

  Therefore, the rotating machine according to the fourth embodiment aims to make the inductances of the windings L1 to L3 in the first connection relationship different from the inductances of the windings L1 to L3 in the second connection relationship. To do.

  Each of the windings L1 to L3 according to the fourth embodiment includes a plurality of winding portions. The rotating machine according to the fourth embodiment further includes a plurality of switches that selectively connect at least two of the plurality of winding portions in series or in parallel with each other for each of the windings L1 to L3. I have. A more specific example will be described below.

  FIG. 5 shows a conceptual configuration of an example of the winding L1. The windings L2 and L3 have the same configuration as in FIG. The winding L1 includes winding portions L11 to L14. Each of the winding parts L11 to L14 has one end and the other end.

  A switch SP1 is provided between one ends of the winding portions L11 and L12, a switch SP3 is provided between one ends of the winding portions L12 and L13, and a switch SP5 is provided between one ends of the winding portions L13 and L14. Each is provided.

  A switch SP2 is provided between the other ends of the winding portions L11 and L12, a switch SP4 is provided between the other ends of the winding portions L12 and L13, and a switch SP4 is provided between the other ends of the winding portions L13 and L14. A switch SP6 is provided.

  A switch SR1 is provided between the other end of the winding portion L11 and one end of the winding portion L12, and a switch SR2 is provided between the other end of the winding portion L12 and one end of the winding portion L13, and the winding portion L13. A switch SR3 is provided between the other end of the coil and one end of the winding portion L14.

  One end of the winding portion L11 is connected to the end portion P21 (see FIGS. 1 to 4), and the other end of the winding portion L14 is connected to the end portion P11 (see FIGS. 1 to 4).

  After making switch SR1 non-conductive and making one set of switches SP1 and SP2 conductive, winding portions L11 and L12 are connected in parallel to each other, and one set of switches SP1 and SP2 are made non-conductive The windings L11 and L12 are connected in series with each other by conducting the switch SR1. After making switch SR2 non-conductive and making one set of switches SP3 and SP4 conductive, winding portions L12 and L13 are connected in parallel to each other, and making one set of switches SP3 and SP4 non-conductive The windings L12 and L13 are connected in series with each other by conducting the switch SR2. After making switch SR3 non-conductive and making one set of switches SP5 and SP6 conductive, winding portions L13 and L14 are connected in parallel to each other, and making one set of switches SP5 and SP6 non-conductive The windings L13 and L14 are connected in series with each other by conducting the switch SR3.

  When the rotating machine 2 adopts the first connection relationship, for example, the switches SP1 to SP6 are turned off and the switches SR1 to SR3 are turned on. In the winding L1 that functions as an armature winding in the first connection relationship, the winding portions L11 to L14 are connected to each other in series. On the other hand, when adopting the second connection relationship, for example, the switches SP1 to SP6 are turned on and the switches SR1 to SR3 are turned off. In the winding L1 that functions as an input reactor in the second connection relationship, the winding portions L11 to L14 are connected in parallel to each other.

  Therefore, the inductance of the winding L1 that functions as an armature winding can be made different from the inductance of the winding L1 that functions as an input reactor.

  Further, for example, when adopting the first connection relationship, the winding portions L11 to L14 are connected in series with each other, and when adopting the second connection relationship, only the winding portions L11 and L12 are connected in parallel to each other. The winding portions L12 to L14 may be connected in series with each other. Thus, according to the first and second connection relationships, the connection relationship between two adjacent winding portions L11 to L14 can be individually selected in a series / parallel state. Therefore, finer adjustment of inductance can be performed.

  The switches SP1 to SP6 and SR1 to SR3 are not necessarily provided. For example, only the switches SP1, SP2 and SR1 may be provided, and the winding portions L12 to L14 may be connected to each other in series. Even in this case, for example, when adopting the first connection relation, the switch SR1 is made conductive, the switches SP1 and SP2 are made non-conductive, and when the second connection relation is adopted, for example, the switches SP1 and SP2 are made conductive. Thus, the switch SR1 may be turned off.

  The switching operation of the switches SP1 to SP6 and SR1 to SR3 may be performed by a control unit (not shown) or manually by the user.

Fifth embodiment.
As in the fourth embodiment, the rotating machine according to the fifth embodiment includes the inductances of the windings L1 to L3 in the first connection relationship and the inductances of the windings L1 to L3 in the second connection relationship. Is intended to be different.

  As an example, FIG. 6 shows a conceptual configuration of part of a rotating machine according to the fifth embodiment. The winding includes a plurality of winding portions connected in series with each other, and connection points provided by selecting positions of at least three positions among both ends of the plurality of winding portions. Any one connection point sandwiches at least one winding portion between the other connection points.

  A more specific example will be described with reference to FIG. Since the windings L2 and L3 have the same configuration as the winding L1, the winding L1 will be described as a representative. The winding L1 includes a plurality of winding portions L11 to L14 and connection points T11 to T15.

  Winding portions L11-L14 are connected to each other in series. The connection points T11 to T13 are provided between two adjacent winding portions L11 to L14, the connection point T14 is one end of the winding portion L14 opposite to the winding portion L13, and the connection point T15 is a winding portion. It is provided at one end of the winding part L11 opposite to L12. The connection points T11 to T15 are provided at both ends of the winding portions L11 to L14. However, the present invention is not limited to this, and the connection points may be provided at least at three locations. In addition, as can be easily understood from the above-described contents, a pair of both ends (connection points T14 and T15 side) of the entire winding portions L11 to L14 are also candidates for connection points.

  In the first connection relationship, for example, a pair of connection points among the connection points T11 to T15 function as one end and the other end of the winding L1, and in the second connection relationship, a pair different from the pair. The connection point functions as one end and the other end of the winding L1.

  More specifically, for example, the end portion P11 (one end side of the winding L1: see FIGS. 1 to 4) is connected to the connection point T15. The end P21 (the other end of the winding L2: see FIGS. 1 to 4) is connected to the connection point T1, and the connection point T1 is selectively connected to any one of the connection points T11 to T14. . In addition, the connection points T11 to T14 that are selectively connected to the connection point T1 are configured by taps, for example.

  When the rotating machine 2 adopts the first connection relationship, for example, the connection points T1 and T14 are connected to each other. At this time, the pair of connection points T14 and T15 function as one end and the other end of the winding L1, respectively. In other words, the winding portions L11 to L14 constitute the winding L1 that functions as an armature winding.

  On the other hand, when adopting the second connection relationship, for example, the connection points T1 and T13 are connected to each other. At this time, the pair of connection points T13 and T15 function as one end and the other end of the winding L1, respectively. In other words, the winding portions L11 to L13 constitute the winding L1 that functions as an input reactor.

  Therefore, the inductance of the winding L1 that functions as an armature winding can be made different from the inductance of the winding L1 that functions as an input reactor.

  The end P21 may be connected to the connection point T15, and the end P11 may be connected to the connection point T1. Even in this case, the inductance of the winding L1 functioning as an armature winding can be made different from the inductance of the winding L1 functioning as an input reactor.

  Further, a connection point connected to the end portion P11 may be provided, and this connection point may be connected to any of the connection points T11 to T14. However, they are connected so that at least one winding portion is interposed between the end portions P11 and P21. And the winding part interposed between the end parts P11 and P21 when the first connection relation is adopted and the winding part interposed between the end parts P11 and P21 when the second connection relation is adopted. And should be different.

  Even in such a case, the inductance of the winding L1 functioning as an armature winding can be made different from the inductance of the winding L1 functioning as an input reactor.

  The connection between the connection points may be executed by a control unit (not shown) or manually by the user.

It is a notional block diagram which shows the hybrid electric power supply system which has an example of the rotary machine which concerns on embodiment. It is a notional block diagram which shows the hybrid electric power supply system which has an example of the rotary machine which concerns on embodiment. It is a notional block diagram which shows the electric vehicle which has an example of the rotary machine which concerns on embodiment. It is a notional block diagram which shows an example of the rotary machine which concerns on 3rd Embodiment. It is a notional block diagram which shows an example of a part of rotary machine which concerns on 4th Embodiment. It is a notional block diagram which shows an example of a part of rotary machine concerning 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch circuit 2 Rotating machine 3 Power converter N Neutral point L1-L3 Winding L11-L14, L21-L24, L31-L34 Winding part P11-P13, P21-P23 End part PH1, PL1 I / O line SG1- SG3, SM1-SM3 switch T11-T15, T21-T25, T31-T25 connection point

Claims (10)

First to Nth windings (L1 to L3; L11 to L14, L21 to L24, L31 to L34) each having one end and the other end;
First to Nth ends (P11 to P13) respectively connected to the one ends of the first to Nth windings;
N + 1 to Nth end portions (P21 to P23) connected to the other end of each of the first to Nth windings;
A first connection relationship for connecting the first to Nth windings to function as an N-phase armature winding, and a second connection for disconnecting the first to Nth windings from each other A switch circuit (1) for selectively switching the relationship;
A rotating machine (2) comprising a rotor (GR1). A neutral point (N),
The switch circuit (1)
A plurality of first switches (SG1 to SG3; SM1 to SM3) provided between the one end of each of the first to Nth windings (L1 to L3) and the neutral point.
Have
All of the plurality of first switches are conducted to realize the first connection relationship,
2. The rotating machine according to claim 1, wherein all of the plurality of first switches are non-conductive to realize the second connection relationship. The switch circuit (1)
Between the other end of the kth winding and the one end of the k + 1th winding (k is 1 to N-1), the other end of the Nth winding and the first winding A plurality of first switches (SG1 to SG3; SM1 to SM3) provided respectively between the one ends of
Have
All of the plurality of first switches are conducted to realize the first connection relationship,
The rotating machine (2) according to claim 1, wherein all of the plurality of first switches are non-conductive and the second connection relation is realized. The switch circuit (1)
A plurality of second switches provided between the one end of each of the first to Nth windings (L1 to L3) and the first to Nth ends (P11 to P13), respectively. SE1 to SE3)
Further comprising
4. The plurality of second switches (SE <b> 1 to SE <b> 3) are turned off / conducted in response to conduction / non-conduction of the plurality of first switches (SG <b> 1 to SG <b>3; SM <b> 1 to SM <b> 3), respectively. Rotating machine. Each of the first to Nth windings (L1 to L3) includes a plurality of winding portions (L11 to L14, L21 to L24, L31 to L34),
For each of the first to Nth windings, a plurality of third switches (SP1 to SP6, SR1 to selectively connect at least two of the plurality of winding portions in series or in parallel with each other). The rotating machine according to any one of claims 1 to 4, further comprising SR3). Each of the first to Nth windings is provided by selecting a plurality of winding portions connected in series with each other and at least three positions among both ends of each of the plurality of winding portions. Connection points,
In each of the first to Nth windings,
Any one of the connection points sandwiches at least one winding part between the other connection points,
In the first connection relationship, the first pair of connection points function as the one end and the other end,
6. The rotating machine according to claim 1, wherein in the second connection relationship, the second pair of connection points different from the first pair functions as the one end and the other end. The rotating machine (G1) according to any one of claims 1 to 6,
A power system comprising: a power conversion device (3) that receives an alternating voltage from the N + 1 th to the second N ends (P21 to P23) and converts the alternating voltage to a direct voltage. The rotating machine (M1) according to any one of claims 1 to 6,
First and second input / output terminals (PH1, PL1);
In the second connection relationship, an AC voltage input from the (N + 1) th to the 2Nth ends (P21 to P23) is converted into a DC voltage and applied between the first and second input / output terminals. In the first connection relation, a DC voltage inputted from the first and second input / output terminals is converted into an AC voltage, and the first to the second through the N + 1 th to the second N ends. Power converter for supplying N windings (3)
A power system further comprising:   The power system according to claim 7 or 8, wherein the rotating machine is a direct current brushless rotating machine.   The power system according to claim 7 or 8, wherein the rotating machine is an induction machine.

Images