CN100356672C - Three phase power factor correction electric energy converter - Google Patents

Three phase power factor correction electric energy converter Download PDF

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Publication number
CN100356672C
CN100356672C CNB2003101210032A CN200310121003A CN100356672C CN 100356672 C CN100356672 C CN 100356672C CN B2003101210032 A CNB2003101210032 A CN B2003101210032A CN 200310121003 A CN200310121003 A CN 200310121003A CN 100356672 C CN100356672 C CN 100356672C
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phase
mutually
fly
series
series arm
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CN1555124A (en
Inventor
阮世良
于启学
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Vertiv Tech Co Ltd
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Emerson Network Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The present invention discloses a three phase power factor correction electric energy converter. An auxiliary inductor is connected in series with a corresponding main fly-wheel diode to reduce reverse recovery current. When a switch tube is switched off, because the function of reverse recovery energy stored by the auxiliary inductor, the follow current can be effectively transferred to the main fly-wheel diode. The energy is finally transferred to output, the energy loss is reduced, and thereby, the efficiency of the entire circuit is improved; center taps or auxiliary edge windings are added to a main inductor to increase the current transfer energy, and when the switch tube is switched off, the increased current transfer energy and the reverse recovery energy stored by the auxiliary inductor together act and the follow current are effectively and totally transferred to the main fly-wheel diode. The two parts of energy is finally transferred to the output, no energy loss occurs under an ideal condition, and thereby, the efficiency of the entire circuit is further improved.

Description

Three-phase activity coefficient adjustment transformation of electrical energy device
[technical field]:
The present invention relates to a kind of three-phase activity coefficient adjustment transformation of electrical energy device.
[background technology]:
Along with the development of power electronic technology, more and more higher to the requirement of the input power factor of transformation of electrical energy device.For in powerful device, (Power Factor Correction, PFC) circuit is optimum selection to three-phase activity coefficient adjustment, and three-phase tri-level PFC is wherein preferably.Though three-phase tri-level PFC has different topological structures, can unify is the topological circuit of an equivalence, as shown in Figure 1.
Wherein Va, Vb and Vc are the phase voltages of three-phase input, and La, Lb and Lc are boost inductance, and S1, S2 and S3 are the bidirectional power pipe, and D1～D6 is a fly-wheel diode.Its operation principle and single-phase BOOST PFC basically identical by controlling three power tubes, make three-phase current follow the tracks of three-phase voltage, are the near sinusoidal ripple.This circuit exists following problem:
When S1 turn-offs, (with A is that example describes mutually, and other is mutually identical) if the A phase voltage for just, then D1 conducting is (if the A phase voltage is for bearing, the D4 conducting is pressed forward and is discussed, and negative sense-class is seemingly), flow through forward current, when the S1 conducting, D1 bears back-pressure, forms reverse recovery current.Reverse recovery current flows through S1 with the L1 electric current, thereby has increased the loss of turn-on consumption and the D1 of S1.When output voltage V o is high more,, make the problems referred to above more serious because the reverse recovery time of high-voltage diode is longer.The switching frequency of S1 is high more, and the loss that then reverse recovery causes is big more, has therefore just limited the raising of circuit work frequency.
[summary of the invention]:
Purpose of the present invention is exactly in order to overcome the above problems, and a kind of three-phase activity coefficient adjustment transformation of electrical energy device is provided, and reduces reverse recovery loss, improves circuit efficiency.For achieving the above object, the present invention proposes two kinds of three-phase activity coefficient adjustment transformation of electrical energy devices that belong to same design.
Wherein first kind of three-phase activity coefficient adjustment transformation of electrical energy device comprises first to three voltage input end, first to three main inductance, first to the three forward fly-wheel diode, first to the three reverse fly-wheel diode and first to the three bidirectional power pipe, constitutes the three-phase tri-level pfc circuit; First phase structure of described pfc circuit is: described first main inductance, one end links to each other with first voltage input end, the other end is connected in the anode of the first forward fly-wheel diode and the node of connecting of the negative electrode of the first reverse fly-wheel diode with the first bidirectional power pipe, the described first forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described first reverse fly-wheel diode anode is connected to the output voltage negative terminal;
Second phase structure of described pfc circuit is: described second main inductance, one end links to each other with second voltage input end, the other end is connected in the anode of the second forward fly-wheel diode and the node of connecting of the negative electrode of the second reverse fly-wheel diode with the second bidirectional power pipe, the described second forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described second reverse fly-wheel diode anode is connected to the output voltage negative terminal;
The third phase structure of described pfc circuit is: described the 3rd main inductance one end links to each other with the tertiary voltage input, the other end is connected in the anode of the 3rd forward afterflow triode and the node of connecting of the negative electrode of the 3rd reverse fly-wheel diode with the 3rd bidirectional power pipe, described the 3rd forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described the 3rd reverse fly-wheel diode anode is connected to the output voltage negative terminal;
It is characterized in that:
First also comprise in mutually first auxiliary induction, first to the two forward booster diode, first to the two reverse booster diode, first auxiliary capacitor, the 4th auxiliary capacitor and with first coupling inductance of first main inductance coupling, constitute the forward branch road of first phase and reverse branch road;
It is as follows that the first phase forward that is made of said elements props up line structure: described first auxiliary induction, first coupling inductance and the formation first in sequential series of the anode of the first forward fly-wheel diode is first series arm mutually, first of series aiding connection, two forward booster diodes form first phase, second series arm, above-mentioned first mutually first series arm the first forward fly-wheel diode with first mutually the first forward booster diode common cathode of second series arm be connected to the output voltage anode, first voltage input end of described first coupling inductance and first main inductance is the end of different name mutually, end with first auxiliary capacitor, and the anode of the first forward fly-wheel diode is connected; The other end of described first auxiliary capacitor is connected first and second forward booster diode series connection node;
By said elements constitute first as follows to line structure on the contrary: described first auxiliary induction, first coupling inductance, with the negative electrode of first reverse fly-wheel diode formation first in sequential series the 3rd series arm mutually, first of series aiding connection, two reverse booster diodes form first phase the 4th series arm, above-mentioned first mutually the 3rd series arm the first reverse fly-wheel diode with first mutually the common anode of the first reverse booster diode of the 4th series arm be connected to the output voltage negative terminal, first voltage input end of described first coupling inductance and first main inductance is the end of different name mutually, end with the 4th auxiliary capacitor, and the negative electrode of the first reverse fly-wheel diode is connected; The other end of described the 4th auxiliary capacitor is connected first and second reverse booster diode series connection node;
The end that described first coupling inductance and first voltage input end of first main inductance are mutually of the same name links to each other with an end of first auxiliary induction, and the other end of described first auxiliary induction and the first bidirectional power pipe are connected in first second series arm and the first series connection node of the 4th series arm mutually mutually;
Second also comprise in mutually second auxiliary induction, the 3rd to four forward booster diode, the 3rd to four reverse booster diode, second auxiliary capacitor, the 5th auxiliary capacitor and with second coupling inductance of second main inductance coupling, constitute the forward branch road of second phase and reverse branch road;
It is as follows that the second phase forward that is made of said elements props up line structure: described second auxiliary induction, second coupling inductance and the formation second in sequential series of the anode of the second forward fly-wheel diode is first series arm mutually, the 3rd of series aiding connection, four forward booster diodes form second phase, second series arm, above-mentioned second mutually first series arm the second forward fly-wheel diode with second mutually the 3rd forward booster diode common cathode of second series arm be connected to the output voltage anode, second voltage input end of described second coupling inductance and second main inductance is the end of different name mutually, end with second auxiliary capacitor, and the anode of the second forward fly-wheel diode is connected; The other end of described second auxiliary capacitor is connected third and fourth forward booster diode series connection node;
By said elements constitute second as follows to line structure on the contrary: described second auxiliary induction, second coupling inductance, with the negative electrode of second reverse fly-wheel diode formation second in sequential series the 3rd series arm mutually, the 3rd of series aiding connection, four reverse booster diodes form second phase the 4th series arm, above-mentioned second mutually the 3rd series arm the second reverse fly-wheel diode with second mutually the common anode of the second reverse booster diode of the 4th series arm be connected to the output voltage negative terminal, second voltage input end of described second coupling inductance and second main inductance is the end of different name mutually, end with the 5th auxiliary capacitor, and the negative electrode of the second reverse fly-wheel diode is connected; The other end of described the 5th auxiliary capacitor is connected third and fourth reverse booster diode series connection node;
The end that described second coupling inductance and second voltage input end of second main inductance are mutually of the same name links to each other with an end of second auxiliary induction, and the other end of described second auxiliary induction and the second bidirectional power pipe are connected in second second series arm and the second series connection node of the 4th series arm mutually mutually;
In third phase, also comprise the 3rd auxiliary induction, the 5th to six forward booster diode, the 5th to six reverse booster diode, the 3rd auxiliary capacitor, the 6th auxiliary capacitor and the 3rd coupling inductance that is coupled with the 3rd main inductance, constitute the forward branch road and the reverse branch road of third phase;
It is as follows that the third phase forward that is made of said elements props up line structure: described the 3rd auxiliary induction, the anode of the 3rd coupling inductance and the 3rd forward fly-wheel diode formation third phase first series arm in sequential series, the 5th of series aiding connection, six forward booster diodes form third phase second series arm, the 3rd forward booster diode common cathode of the 3rd forward fly-wheel diode of above-mentioned third phase first series arm and third phase second series arm is connected to the output voltage anode, and the tertiary voltage input of described the 3rd coupling inductance and the 3rd main inductance is the end of different name mutually, end with the 3rd auxiliary capacitor, and the anode of the 3rd forward fly-wheel diode is connected; The other end of described the 3rd auxiliary capacitor is connected the 5th, six forward booster diodes series connection node;
It is as follows that the third phase that is made of said elements oppositely props up line structure: described the 3rd auxiliary induction, the 3rd coupling inductance, with the negative electrode of the 3rd reverse fly-wheel diode formation third phase the 3rd series arm in sequential series, the 5th of series aiding connection, six reverse booster diodes form third phase the 4th series arm, the 3rd reverse fly-wheel diode of above-mentioned third phase the 3rd series arm and the 5th reverse booster diode of third phase the 4th series arm altogether anode are connected to the output voltage negative terminal, and the tertiary voltage input of described the 3rd coupling inductance and the 3rd main inductance is the end of different name mutually, end with the 6th auxiliary capacitor, and the negative electrode of the 3rd reverse fly-wheel diode is connected; The other end of described the 6th auxiliary capacitor is connected the 5th, six reverse booster diode series connection nodes;
The end that described the 3rd coupling inductance and the tertiary voltage input of the 3rd main inductance are mutually of the same name links to each other with an end of the 3rd auxiliary induction, and the other end of described the 3rd auxiliary induction and the 3rd bidirectional power pipe are connected in the node of connecting of third phase second series arm and third phase the 4th series arm.
Wherein second kind of three-phase activity coefficient adjustment transformation of electrical energy device comprises first to three voltage input end, first to three main inductance, first to the three forward fly-wheel diode, first to the three reverse fly-wheel diode and first to the three bidirectional power pipe, constitutes the three-phase tri-level pfc circuit;
First phase structure of described pfc circuit is: described first main inductance, one end links to each other with first voltage input end, the other end is connected in the anode of the first forward fly-wheel diode and the node of connecting of the negative electrode of the first reverse fly-wheel diode with the first bidirectional power pipe, the described first forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described first reverse fly-wheel diode anode is connected to the output voltage negative terminal;
Second phase structure of described pfc circuit is: described second main inductance, one end links to each other with second voltage input end, the other end is connected in the anode of the second forward fly-wheel diode and the node of connecting of the negative electrode of the second reverse fly-wheel diode with the second bidirectional power pipe, the described second forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described second reverse fly-wheel diode anode is connected to the output voltage negative terminal;
The third phase structure of described pfc circuit is: described the 3rd main inductance one end links to each other with the tertiary voltage input, the other end is connected in the anode of the 3rd forward afterflow triode and the node of connecting of the negative electrode of the 3rd reverse fly-wheel diode with the 3rd bidirectional power pipe, described the 3rd forward fly-wheel diode negative electrode is connected to the output voltage anode, and the described the 3rd reverse fly-wheel diode anode is connected to the output voltage negative terminal;
It is characterized in that:
First also comprise in mutually the 4th, seven auxiliary inductions, first to the two forward booster diode, first to the two reverse booster diode, first auxiliary capacitor, the 4th auxiliary capacitor and with first coupling inductance of first main inductance coupling, constitute the forward branch road of first phase and reverse branch road;
It is as follows that the first phase forward that is made of said elements props up line structure: described first coupling inductance, the 4th auxiliary induction and the anode of the first forward fly-wheel diode are in series and form first first series arm mutually, first to the two forward booster diode of series aiding connection forms first phase, second series arm, first mutually first series arm the first forward fly-wheel diode with first mutually the first forward booster diode common cathode of second series arm be connected to the output voltage anode, one end of first auxiliary capacitor with first mutually the first forward fly-wheel diode in first series arm and the series connection node of the 4th auxiliary induction link to each other, the other end with first mutually second series arm first, two forward booster diodes series connection node links to each other;
By said elements constitute first as follows to line structure on the contrary: described first coupling inductance, the 7th auxiliary induction and the negative electrode of the first reverse fly-wheel diode are in series and form first the 3rd series arm mutually, first to the two reverse booster diode of series aiding connection forms first phase the 4th series arm, first mutually the 3rd series arm the first reverse fly-wheel diode with first mutually the common anode of the first reverse booster diode of the 4th series arm be connected to the output voltage negative terminal, one end of described the 4th auxiliary capacitor with above-mentioned first mutually the first negative sense fly-wheel diode of the 3rd series arm and the series connection node of the 7th auxiliary induction link to each other, the other end with first mutually the 4th series arm first, two reverse booster diode series connection nodes link to each other;
First voltage input end of described first coupling inductance and first main inductance end of different name mutually is connected in the series connection node of the 4th auxiliary induction and the 7th auxiliary induction, described first coupling inductance and first voltage input end of first main inductance end mutually of the same name and the first bidirectional power pipe and is connected in first second series arm and first node of connecting of the 4th series arm mutually mutually;
Second also comprise in mutually the 5th, eight auxiliary inductions, third and fourth forward booster diode, the 3rd to four reverse booster diode, second auxiliary capacitor, the 5th auxiliary capacitor and with second coupling inductance of second main inductance coupling, constitute the forward branch road of second phase and reverse branch road;
It is as follows that the second phase forward that is made of said elements props up line structure: described second coupling inductance, the 5th auxiliary induction and the anode of the second forward fly-wheel diode are in series and form second first series arm mutually, the the 3rd to four forward booster diode of series aiding connection forms second phase, second series arm, second mutually first series arm the second forward fly-wheel diode with second mutually the 3rd forward booster diode common cathode of second series arm be connected to the output voltage anode, one end of second auxiliary capacitor with second mutually the second forward fly-wheel diode in first series arm and the series connection node of the 5th auxiliary induction link to each other, the other end with second mutually second series arm the 3rd, four forward booster diodes series connection node links to each other;
By said elements constitute second as follows to line structure on the contrary: described second coupling inductance, the 8th auxiliary induction and the negative electrode of the second reverse fly-wheel diode are in series and form second the 3rd series arm mutually, the the 3rd to four reverse booster diode of series aiding connection forms second phase the 4th series arm, second mutually the 3rd series arm the second reverse fly-wheel diode with second mutually the common anode of the 3rd reverse booster diode of the 4th series arm be connected to the output voltage negative terminal, one end of described the 5th auxiliary capacitor with above-mentioned second mutually the second negative sense fly-wheel diode of the 3rd series arm and the series connection node of the 8th auxiliary induction link to each other, the other end with second mutually the 4th series arm the 3rd, four reverse booster diode series connection nodes link to each other;
Second voltage input end of described second coupling inductance and second main inductance end of different name mutually is connected in the series connection node of the 5th auxiliary induction and the 8th auxiliary induction, described second coupling inductance and second voltage input end of second main inductance end mutually of the same name and the second bidirectional power pipe and is connected in second second series arm and second node of connecting of the 4th series arm mutually mutually.
In third phase, also comprise the 6th, nine auxiliary inductions, the 5th, six forward booster diodes, the 5th, six reverse booster diodes, the 3rd auxiliary capacitor, the 6th auxiliary capacitor and the 3rd coupling inductance that is coupled with the 3rd main inductance, constitute the forward branch road and the reverse branch road of third phase;
It is as follows that the third phase forward that is made of said elements props up line structure: described the 3rd coupling inductance, the anode of the 6th auxiliary induction and the 3rd forward fly-wheel diode is in series and forms third phase first series arm, the 5th of series aiding connection, six forward booster diodes form third phase second series arm, the 5th forward booster diode common cathode of the 3rd forward fly-wheel diode of third phase first series arm and third phase second series arm is connected to the output voltage anode, the 3rd forward fly-wheel diode in one end of the 3rd auxiliary capacitor and third phase first series arm and the series connection node of the 6th auxiliary induction link to each other the 5th of the other end and third phase second series arm, six forward booster diodes series connection node links to each other;
It is as follows that the third phase that is made of said elements oppositely props up line structure: described the 3rd coupling inductance, the negative electrode of the 9th auxiliary induction and the 3rd reverse fly-wheel diode is in series and forms third phase the 3rd series arm, the 5th of series aiding connection, six reverse booster diodes form third phase the 4th series arm, the 3rd reverse fly-wheel diode of third phase the 3rd series arm and the 5th reverse booster diode of third phase the 4th series arm anode altogether are connected to the output voltage negative terminal, one end of described the 6th auxiliary capacitor links to each other the 5th of the other end and third phase the 4th series arm with the 3rd negative sense fly-wheel diode of above-mentioned third phase the 3rd series arm and the series connection node of the 9th auxiliary induction, six reverse booster diode series connection nodes link to each other;
The tertiary voltage input of described the 3rd coupling inductance and the 3rd main inductance end of different name mutually is connected in the node of connecting that the series connection node of the 6th auxiliary induction and the 9th auxiliary induction, described the 3rd coupling inductance and the tertiary voltage input of the 3rd main inductance end mutually of the same name and the 3rd bidirectional power pipe are connected in third phase second series arm and third phase the 4th series arm.
In above-mentioned two kinds of schemes, the mode that described main inductance is divided into two parts also can have two kinds of selections: the one, described first to three main inductance be respectively have centre tapped first to the three-winding the whole winding between first terminals and second terminals, and first to three coupling inductance is respectively coiler part between the above-mentioned centre cap and second terminals; The 2nd, described main inductance and the coupling of its coupling inductance constitute transformer, and described main inductance is a former limit winding, and described coupling inductance is the secondary winding.
Owing to adopted above scheme, connect with an auxiliary induction and corresponding with it main fly-wheel diode and to reduce reverse recovery current, when closing, switching tube has no progeny, because the effect of the reverse recovery energy that auxiliary induction stores can effectively make freewheel current transfer on the main fly-wheel diode.Above-mentioned energy is finally transferred to output, has reduced energy loss, thereby has improved the efficient of entire circuit.Owing to also on main inductance, increase centre cap or the secondary winding increases the current transfer energy, when closing, switching tube has no progeny, the reverse recovery energy acting in conjunction that current transfer energy that increases and auxiliary induction store can effectively make freewheel current all transfer on the main fly-wheel diode.Above-mentioned two parts energy is finally all transferred to output, does not ideally have energy loss, thereby has further improved the efficient of entire circuit.
[description of drawings]:
Fig. 1 is existing equivalent three-phase tri-level pfc circuit schematic diagram.
Fig. 2 (a), 2 (b), 2 (c), 2 (d) are the schematic diagrames of four embodiment of the present invention.
Fig. 3 is the work schedule waveform schematic diagram of Fig. 2 (a) circuit.
[embodiment]:
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Basic topological structure of the present invention has four kinds of citation forms shown in Fig. 2 (a)～2 (d), and wherein Fig. 2 (a), 2 (c) show two embodiment of above-mentioned first kind of scheme, and Fig. 2 (b), 2 (d) show two embodiment of above-mentioned second kind of scheme.La～Lc is the coupling transformer that has centre tapped coil or have the secondary winding, end of the same name as shown in the figure, Lsa～Lsc and L1～L6 are auxiliary inductions, D1～D6 is main fly-wheel diode, all the other diodes are booster diode, C1～C6 is an auxiliary capacitor.As seen from the figure, the common ground of the above embodiment of the present invention is to set up auxiliary induction Lsa～Lsc or L1～L6, booster diode D11, D12, D21, D22, D31, D32, D41, D42, D51, D52, D61, D62, auxiliary capacitor C1～C6; Every mutually in: described auxiliary induction Lsa～Lsc or L1～L6 are in series with corresponding sustained diode 1-D6 respectively and form first series arm, booster diode D11, the D12 of two series aiding connections, D21, D22, D31, D32, D41, D42, D51, D52, D61, D62 form second series arm, above-mentioned first series arm and second series arm are in parallel in the same way, and described auxiliary capacitor C1～C6 cross-over connection is in the mid point of above-mentioned first series arm and second series arm.
Wherein the connection of auxiliary induction has two kinds of forms, a kind of being shown among Fig. 2 (a), Fig. 2 (b), every mutually in the shared auxiliary induction Lsa～Lsc of positive-negative half-cycle.Another kind is shown among Fig. 2 (c), 2 (d), every mutually in positive-negative half-cycle adopt independently auxiliary induction L1～L6 respectively.
Every mutually in, described main inductance La1, Lb1, Lc1 at least also are coupled with one, this coupling inductance La2, Lb2, Lc2 are series in described first series arm, and the voltage input end end of the same name among this coupling inductance La2, Lb2, Lc2 to be connected in bidirectional power pipe S1, S2, S3 last or be connected on bidirectional power pipe S1, S2, the S3 by auxiliary induction Lsa～Lsc.It also can be realized by dual mode:
A kind of is the scheme shown in Fig. 2 (a), 2 (c), described main inductance La1, Lb1, Lc1 have the whole winding between first terminals and second terminals among centre tapped coil La, Lb, the Lc, and coupling inductance La2, Lb2, Lc2 are coiler part between the above-mentioned centre cap and second terminals.
Another kind is the scheme shown in Fig. 2 (b), 2 (d), described main inductance La1, Lb1, Lc1 and its coupling inductance La2, Lb2, Lc2 coupling constitute transformer La, Lb, Lc, described main inductance La1, Lb1, Lc1 are former limit winding, and described coupling inductance La2, Lb2, Lc2 are the secondary winding.
Below in conjunction with accompanying drawing the present invention program's operation principle is simply introduced:
Fig. 2 (a) is more a kind of in the invention scheme, will be that example is introduced operation principle of the present invention with this circuit below.
In the course of work, because each working hour and each have similitude mutually, therefore the description below is based on such period: the A phase current is for just, and the B phase current is for negative, and near zero-crossing point, the C phase current is for bearing; The circuit object of describing is the A circuitry phase.The course of work of all the other periods and all the other two-phases can be analogized and obtains.
In order to simplify circuit analysis, in a switch periods, can make the following assumptions:
A, output capacitance are enough big, can think that output voltage is invariable direct voltage;
B, except main fly-wheel diode, all power devices are desirable device;
C, main inductance are much larger than auxiliary induction, and the inductance value La1 of main inductance is much larger than the inductance value La2 of its coupling inductance;
D, input voltage are constant.
Based on above hypothesis, the switch periods of selected period is divided into 10 time periods analyzes, the timing waveform of work is as shown in Figure 3.Wherein dr1～dr3 is respectively the driving of S1～S3.
Phase I (t0-t1)
T0 constantly, S1 is open-minded, main sustained diode 1 has reverse recovery current to flow through, La2, Lsa and the D1 minimizing reverse recovery current that is together in series.
Second stage (t1-t2)
T1 constantly oppositely recovers to finish, and La2 provides the current transfer energy, has stored reverse recovery energy among the Lsa simultaneously, and with C1 through D12 resonance, energy shifts to C1.
Phase III (t2-t3)
T2 resonance constantly finishes, and D12 ends, and C1 voltage remains unchanged, and circuit enters normal S1 conducting state.
Quadravalence section (t3-t4)
In the t3 moment, S1 turn-offs, owing to the Lsa electric current can not suddenly change, and D11 and D12 conducting, C1 and La1 are by the D11 resonant discharge simultaneously, and Lsa, D12, D11 branch current constantly reduce.
Five-stage (t4-t5)
In the t4 moment, the Lsa electric current is reduced to zero, and D12 ends, and C1 continues discharge, because the C1 both end voltage is more and more littler, D1 begins conducting, and electric current slowly increases, and the D11 electric current is more and more littler in contrast.
The 6th stage (t5-t6)
T5 constantly, S2 turn-offs and since this moment the B phase current for negative, so v point current potential be-Vo, u point current potential is also followed decline, makes D1 reverse recovery current occur, owing to the La electric current can not suddenly change, the D11 electric current increases suddenly.The C1 both end voltage is kept to zero, discharge off.Then the D1 electric current begins again to increase, and the D11 electric current then reduces.
The 7th stage (t6-t7)
T6 constantly, S3 is open-minded, the Lc electric current increases, and the Lb electric current is near 0, and absolute value reduces, and must cause the La electric current to increase, La produces the positive right negative electromotive force in a left side, makes La2, Lsa, D12, the conducting of D11 path, and increases gradually, and the D1 electric current reduces gradually.
The 8th stage (t7-t8)
T7 constantly, S3 turn-offs, the La electric current reduces, and produces the negative right positive electromotive force in a left side, so La2, Lsa, D12, D11 passage current are opposite with the t6-t7 period, reduce gradually, and D1 increases to some extent.
The 9th stage (t8-t9)
In the t8 moment, S2 is open-minded, because the Lb electric current is little to the current affects of entire circuit near 0, so each device waveform still changes by previous trend.
The tenth stage (t9-t10)
T9 constantly, Lsa, D11, D12 electric current all drop to 0, the A phase current is fully by the D1 afterflow, and constantly reduces.In the t10 moment, S1 is open-minded again, has begun a new cycle.
From top analysis as can be seen, because the existence of the La2 of main inductance part, transfer to the energy of C1 electric capacity, except reverse recovery energy, come from the energy that La2 produces in addition, can be more effectively when this part energy makes the C1 discharge with current transfer in D1.In addition, input voltage Va is big more, and corresponding input current ILa is also big more, and the energy that La2 can provide is also big more, makes big electric current also can shift fully.This is an outstanding advantage of the present invention.
The present invention adopts an auxiliary induction to connect with main fly-wheel diode to reduce reverse recovery current, and utilizes the PFC inductance to increase a special accumulator so that bigger current transfer energy to be provided.Effect of the present invention can reduce the power switch pipe that the fly-wheel diode reverse recovery current caused and the loss of fly-wheel diode, improves the efficient of entire circuit.

Claims (6)

1, a kind of three-phase activity coefficient adjustment transformation of electrical energy device, comprise first to three voltage input end (Va, Vb, Vc), first to three main inductance (La1, Lb1, Lc1), first to the three forward fly-wheel diode (D1, D2, D3), first to the three reverse fly-wheel diode (D4, D5, D6) and first to the three bidirectional power pipe (S1, S2, S3), constitute the three-phase tri-level pfc circuit;
First phase structure of described pfc circuit is:
Described first main inductance (La1) end links to each other with first voltage input end (Va), the other end is connected in the anode of the first forward fly-wheel diode (D1) and the node of connecting of the negative electrode of the first reverse fly-wheel diode (D4) with the first bidirectional power pipe (S1), described first forward fly-wheel diode (D1) negative electrode is connected to output voltage anode (P), and described first reverse fly-wheel diode (D4) anode is connected to output voltage negative terminal (N);
Second phase structure of described pfc circuit is:
Described second main inductance (Lb1) end links to each other with second voltage input end (Vb), the other end is connected in the anode of the second forward fly-wheel diode (D2) and the node of connecting of the negative electrode of the second reverse fly-wheel diode (D5) with the second bidirectional power pipe (S2), described second forward fly-wheel diode (D2) negative electrode is connected to output voltage anode (P), and described second reverse fly-wheel diode (D5) anode is connected to output voltage negative terminal (N);
The third phase structure of described pfc circuit is:
Described the 3rd main inductance (Lc1) end links to each other with tertiary voltage input (Vc), the other end is connected in the anode of the 3rd forward afterflow triode (D3) and the node of connecting of the negative electrode of the 3rd reverse fly-wheel diode (D6) with the 3rd bidirectional power pipe (S3), described the 3rd forward fly-wheel diode (D3) negative electrode is connected to output voltage anode (P), and the described the 3rd reverse fly-wheel diode (D6) anode is connected to output voltage negative terminal (N);
It is characterized in that:
First also comprise in mutually first auxiliary induction (Lsa), first to the two forward booster diode (D11, D12), first to the two reverse booster diode (D41, D42), first auxiliary capacitor (C1), the 4th auxiliary capacitor (C4) and with first coupling inductance (La2) of first main inductance (La1) coupling, constitute the forward branch road of first phase and reverse branch road;
It is as follows that the first phase forward that is made of said elements props up line structure: described first auxiliary induction (Lsa), first coupling inductance (La2), with the anode of the first forward fly-wheel diode (D1) formation first in sequential series first series arm mutually, first of series aiding connection, two forward booster diode (D11, D12) form first phase, second series arm, above-mentioned first mutually first series arm the first forward fly-wheel diode (D1) with first mutually first forward booster diode (D11) common cathode of second series arm be connected to output voltage anode (P), first voltage input end (Va) of described first coupling inductance (La2) and first main inductance (La1) is the end of different name mutually, end with first auxiliary capacitor (C1), and the anode of the first forward fly-wheel diode (D1) is connected; The other end of described first auxiliary capacitor (C1) is connected first and second forward booster diode (D11, D12) series connection node;
By said elements constitute first as follows to line structure on the contrary: first auxiliary induction (Lsa), described first coupling inductance (La2) and the formation first in sequential series of the negative electrode of the first reverse fly-wheel diode (D4) is the 3rd series arm mutually, first of series aiding connection, two reverse booster diode (D41, D42) form first phase the 4th series arm, above-mentioned first mutually the 3rd series arm the first reverse fly-wheel diode (D4) with first mutually the common anode of the first reverse booster diode (D41) of the 4th series arm be connected to output voltage negative terminal (N), first voltage input end (Va) of described first coupling inductance (La2) and first main inductance (La1) is the end of different name mutually, end with the 4th auxiliary capacitor (C4), and the negative electrode of the first reverse fly-wheel diode (D4) is connected; The other end of described the 4th auxiliary capacitor (C4) is connected first and second reverse booster diode (D41, D42) series connection node;
The end that described first coupling inductance (La2) and first voltage input end (Va) of first main inductance (La1) are mutually of the same name links to each other with an end of first auxiliary induction (Lsa), and the other end of described first auxiliary induction (Lsa) and the first bidirectional power pipe (S1) are connected in first second series arm and the first series connection node of the 4th series arm mutually mutually;
Second also comprise in mutually second auxiliary induction (Lsb), the 3rd to four forward booster diode (D21, D22), the 3rd to four reverse booster diode (D51, D52), second auxiliary capacitor (C2), the 5th auxiliary capacitor (C5) and with second coupling inductance (Lb2) of second main inductance (Lb1) coupling, constitute the forward branch road of second phase and reverse branch road;
It is as follows that the second phase forward that is made of said elements props up line structure: described second auxiliary induction (Lsb), second coupling inductance (Lb2) and the formation second in sequential series of the anode of the second forward fly-wheel diode (D2) is first series arm mutually, the 3rd of series aiding connection, four forward booster diode (D21, D22) form second phase, second series arm, above-mentioned second mutually first series arm the second forward fly-wheel diode (D2) with second mutually the 3rd forward booster diode (D51) common cathode of second series arm be connected to output voltage anode (P), second voltage input end (Vb) of described second coupling inductance (Lb2) and second main inductance (Lb1) is the end of different name mutually, end with second auxiliary capacitor (C2), and the anode of the second forward fly-wheel diode (D2) is connected; The other end of described second auxiliary capacitor (C2) is connected third and fourth forward booster diode (D21, D22) series connection node;
By said elements constitute second as follows to line structure on the contrary: described second auxiliary induction (Lsb), second coupling inductance (Lb2), with the negative electrode of the second reverse fly-wheel diode (D5) formation second in sequential series the 3rd series arm mutually, the 3rd of series aiding connection, four reverse booster diode (D51, D52) form second phase the 4th series arm, above-mentioned second mutually the 3rd series arm the second reverse fly-wheel diode (D5) with second mutually the common anode of the 3rd reverse booster diode (D51) of the 4th series arm be connected to output voltage negative terminal (N), second voltage input end (Vb) of described second coupling inductance (Lb2) and second main inductance (Lb1) is the end of different name mutually, end with the 5th auxiliary capacitor (C5), and the negative electrode of the second reverse fly-wheel diode (D5) is connected; The other end of described the 5th auxiliary capacitor (C5) is connected third and fourth reverse booster diode (D51, D52) series connection node;
The end that described second coupling inductance (Lb2) and second voltage input end (Vb) of second main inductance (Lb1) are mutually of the same name links to each other with an end of second auxiliary induction (Lsb), and the other end of described second auxiliary induction (Lsb) and the second bidirectional power pipe (S2) are connected in second second series arm and the second series connection node of the 4th series arm mutually mutually;
In third phase, also comprise the 3rd auxiliary induction (Lsc), the 5th to six forward booster diode (D31, D32), the 5th to six reverse booster diode (D61, D62), the 3rd auxiliary capacitor (C3), the 6th auxiliary capacitor (C6) and the 3rd coupling inductance (Lc2) that is coupled with the 3rd main inductance (Lc1), constitute the forward branch road and the reverse branch road of third phase;
It is as follows that the third phase forward that is made of said elements props up line structure: described the 3rd auxiliary induction (Lsc), anode formation third phase first series arm in sequential series of the 3rd coupling inductance (Lc2) and the 3rd forward fly-wheel diode (D3), the 5th of series aiding connection, six forward booster diode (D31, D32) form third phase second series arm, the 5th forward booster diode (D31) common cathode of the 3rd forward fly-wheel diode (D3) of above-mentioned third phase first series arm and third phase second series arm is connected to output voltage anode (P), and the tertiary voltage input (Vc) of described the 3rd coupling inductance (Lc2) and the 3rd main inductance (Lc1) is the end of different name mutually, end with the 3rd auxiliary capacitor (C3), and the anode of the 3rd forward fly-wheel diode (D3) is connected; The other end of described the 3rd auxiliary capacitor (C3) is connected the 5th, six forward booster diodes (D31, D32) series connection node;
It is as follows that the third phase that is made of said elements oppositely props up line structure: described the 3rd auxiliary induction (Lsc), the 3rd coupling inductance (Lc2), with the negative electrode of the 3rd reverse fly-wheel diode (D6) formation third phase the 3rd series arm in sequential series, the 5th of series aiding connection, six reverse booster diode (D61, D62) form third phase the 4th series arm, the 3rd reverse fly-wheel diode (D6) of above-mentioned third phase the 3rd series arm and the 5th reverse booster diode (D61) of third phase the 4th series arm altogether anode are connected to output voltage negative terminal (N), and the tertiary voltage input (Vc) of described the 3rd coupling inductance (Lc2) and the 3rd main inductance (Lc1) is the end of different name mutually, end with the 6th auxiliary capacitor (C6), and the negative electrode of the 3rd reverse fly-wheel diode (D6) is connected; The other end of described the 6th auxiliary capacitor (C6) is connected the 5th, six reverse booster diodes (D61, D62) series connection node;
The end that described the 3rd coupling inductance (Lc2) and the tertiary voltage input (Vc) of the 3rd main inductance (Lc1) are mutually of the same name links to each other with an end of the 3rd auxiliary induction (Lsc), and the other end of described the 3rd auxiliary induction (Lsc) and the 3rd bidirectional power pipe (S3) are connected in the node of connecting of third phase second series arm and third phase the 4th series arm.
2, three-phase activity coefficient adjustment transformation of electrical energy device as claimed in claim 1, it is characterized in that: described first to three main inductance (La1, Lb1, Lc1) be respectively have centre tapped first to the three-winding (La, Lb, Lc) the whole winding between first terminals and second terminals, and first to three coupling inductance (La2, Lb2, Lc2) is respectively coiler part between the above-mentioned centre cap and second terminals.
3, three-phase activity coefficient adjustment transformation of electrical energy device as claimed in claim 1, it is characterized in that: described first to three main inductance (La1, Lb1, Lc1) and its corresponding first to three coupling inductance (La2, Lb2, Lc2) are coupled and constitute first to three transformer (La, Lb, Lc), described first to three main inductance (La1, Lb1, Lc1) is a former limit winding, and described first to three coupling inductance (La2, Lb2, Lc2) is the secondary winding.
4, a kind of three-phase activity coefficient adjustment transformation of electrical energy device, comprise first to three voltage input end (Va, Vb, Vc), first to three main inductance (La1, Lb1, Lc1), first to the three forward fly-wheel diode (D1, D2, D3), first to the three reverse fly-wheel diode (D4, D5, D6) and first to the three bidirectional power pipe (S1, S2, S3), constitute the three-phase tri-level pfc circuit;
First phase structure of described pfc circuit is:
Described first main inductance (La1) end links to each other with first voltage input end (Va), the other end is connected in the anode of the first forward fly-wheel diode (D1) and the node of connecting of the negative electrode of the first reverse fly-wheel diode (D4) with the first bidirectional power pipe (S1), described first forward fly-wheel diode (D1) negative electrode is connected to output voltage anode (P), and described first reverse fly-wheel diode (D4) anode is connected to output voltage negative terminal (N);
Second phase structure of described pfc circuit is:
Described second main inductance (Lb1) end links to each other with second voltage input end (Vb), the other end is connected in the anode of the second forward fly-wheel diode (D2) and the node of connecting of the negative electrode of the second reverse fly-wheel diode (D5) with the second bidirectional power pipe (S2), described second forward fly-wheel diode (D2) negative electrode is connected to output voltage anode (P), and described second reverse fly-wheel diode (D5) anode is connected to output voltage negative terminal (N);
The third phase structure of described pfc circuit is:
Described the 3rd main inductance (Lc1) end links to each other with tertiary voltage input (Vc), the other end is connected in the anode of the 3rd forward afterflow triode (D3) and the node of connecting of the negative electrode of the 3rd reverse fly-wheel diode (D6) with the 3rd bidirectional power pipe (S3), described the 3rd forward fly-wheel diode (D3) negative electrode is connected to output voltage anode (P), and the described the 3rd reverse fly-wheel diode (D6) anode is connected to output voltage negative terminal (N);
It is characterized in that:
First also comprise in mutually the 4th, seven auxiliary inductions (L1, L4), first to the two forward booster diode (D11, D12), first to the two reverse booster diode (D41, D42), first auxiliary capacitor (C1), the 4th auxiliary capacitor (C4) and with first coupling inductance (La2) of first main inductance (La1) coupling, constitute the forward branch road of first phase and reverse branch road;
It is as follows that the first phase forward that is made of said elements props up line structure: described first coupling inductance (La2), the 4th auxiliary induction (L1) and the anode of the first forward fly-wheel diode (D1) are in series and form first first series arm mutually, first to the two forward booster diode (D11 of series aiding connection, D12) form first phase, second series arm, above-mentioned first mutually first series arm the first forward fly-wheel diode (D1) with first mutually first forward booster diode (D11) common cathode of second series arm be connected to output voltage anode (P), above-mentioned first phase first series arm and first second series arm mutually is in parallel in the same way, one end of first auxiliary capacitor (C1) with first mutually the first forward fly-wheel diode (D1) in first series arm and the series connection node of the 4th auxiliary induction (L1) link to each other, the other end with first mutually second series arm first, two forward booster diode (D11, D12) the series connection node links to each other;
By said elements constitute first as follows to line structure on the contrary: described first coupling inductance (La2), the 7th auxiliary induction (L4) and the negative electrode of the first reverse fly-wheel diode (D4) are in series and form first the 3rd series arm mutually, first to the two reverse booster diode (D41 of series aiding connection, D42) form first phase the 4th series arm, above-mentioned first mutually the 3rd series arm the first reverse fly-wheel diode (D4) with first mutually the common anode of the first reverse booster diode (D41) of the 4th series arm be connected to output voltage negative terminal (N), above-mentioned first phase the 3rd series arm and first the 4th series arm mutually is in parallel in the same way, one end of described the 4th auxiliary capacitor (C4) with above-mentioned first mutually the first negative sense fly-wheel diode (D4) of the 3rd series arm and the series connection node of the 7th auxiliary induction (L4) link to each other, the other end with first mutually the 4th series arm first, two reverse booster diode (D41, D42) the series connection node links to each other;
First voltage input end (Va) of described first coupling inductance (La2) and first main inductance (La1) end of different name mutually is connected in the series connection node of the 4th auxiliary induction (L1) and the 7th auxiliary induction (L4), and described first coupling inductance (La2) and first voltage input end (Va) of first main inductance (La1) end mutually of the same name and the first bidirectional power pipe (S1) are connected in first second series arm and first node of connecting of the 4th series arm mutually mutually;
Second also comprise in mutually the 5th, eight auxiliary inductions (L2, L5), third and fourth forward booster diode (D21, D22), the 3rd to four reverse booster diode (D51, D52), second auxiliary capacitor (C2), the 5th auxiliary capacitor (C5) and with second coupling inductance (Lb2) of second main inductance (Lb1) coupling, constitute the forward branch road of second phase and reverse branch road;
It is as follows that the second phase forward that is made of said elements props up line structure: described second coupling inductance (Lb2), the 5th auxiliary induction (L2) and the anode of the second forward fly-wheel diode (D2) are in series and form second first series arm mutually, the the 3rd to four forward booster diode (D21 of series aiding connection, D22) form second phase, second series arm, second mutually first series arm the second forward fly-wheel diode (D2) with second mutually the 3rd forward booster diode (D21) common cathode of second series arm be connected to output voltage anode (P), one end of second auxiliary capacitor (C2) with second mutually the second forward fly-wheel diode (D2) in first series arm and the series connection node of the 5th auxiliary induction (L2) link to each other, the other end with second mutually second series arm the 3rd, four forward booster diode (D21, D22) the series connection node links to each other;
By said elements constitute second as follows to line structure on the contrary: described second coupling inductance (Lb2), the 8th auxiliary induction (L5) and the negative electrode of the second reverse fly-wheel diode (D5) are in series and form second the 3rd series arm mutually, the the 3rd to four reverse booster diode (D51 of series aiding connection, D52) form second phase the 4th series arm, second mutually the 3rd series arm the second reverse fly-wheel diode (D5) with second mutually the common anode of the 3rd reverse booster diode (D51) of the 4th series arm be connected to output voltage negative terminal (N), one end of described the 5th auxiliary capacitor (C5) with above-mentioned second mutually the second negative sense fly-wheel diode (D5) of the 3rd series arm and the series connection node of the 8th auxiliary induction (L4) link to each other, the other end with second mutually the 4th series arm the 3rd, four reverse booster diode (D51, D52) the series connection node links to each other;
Second voltage input end (Vb) of described second coupling inductance (Lb2) and second main inductance (Lb1) end of different name mutually is connected in the series connection node of the 5th auxiliary induction (L2) and the 8th auxiliary induction (L5), and described second coupling inductance (Lb2) and second voltage input end (Vb) of second main inductance (Lb1) end mutually of the same name and the second bidirectional power pipe (S2) are connected in second second series arm and second node of connecting of the 4th series arm mutually mutually;
In third phase, also comprise the 6th, nine auxiliary inductions (L3, L6), the 5th, six forward booster diodes (D31, D32), the five or six reverse booster diode (D61, D62), the 3rd auxiliary capacitor (C3), the 6th auxiliary capacitor (C6) and the 3rd coupling inductance (Lc2) that is coupled with the 3rd main inductance (Lc1), constitute the forward branch road and the reverse branch road of third phase;
It is as follows that the third phase forward that is made of said elements props up line structure: described the 3rd coupling inductance (Lc2), the anode of the 6th auxiliary induction (L3) and the 3rd forward fly-wheel diode (D3) is in series and forms third phase first series arm, the 5th of series aiding connection, six forward booster diode (D31, D32) form third phase second series arm, the 5th forward booster diode (D31) common cathode of the 3rd forward fly-wheel diode (D3) of third phase first series arm and third phase second series arm is connected to output voltage anode (P), the 3rd forward fly-wheel diode (D3) in one end of the 3rd auxiliary capacitor (C1) and third phase first series arm and the series connection node of the 6th auxiliary induction (L3) link to each other the 5th of the other end and third phase second series arm, six forward booster diode (D11, D12) the series connection node links to each other;
It is as follows that the third phase that is made of said elements oppositely props up line structure: described the 3rd coupling inductance (Lc2), the negative electrode of the 9th auxiliary induction (L6) and the 3rd reverse fly-wheel diode (D6) is in series and forms third phase the 3rd series arm, the 5th of series aiding connection, six reverse booster diode (D61, D62) form third phase the 4th series arm, the 3rd reverse fly-wheel diode (D6) of third phase the 3rd series arm and the 5th reverse booster diode (D61) of third phase the 4th series arm anode altogether are connected to output voltage negative terminal (N), one end of described the 6th auxiliary capacitor (C6) links to each other the 5th of the other end and third phase the 4th series arm with the 3rd negative sense fly-wheel diode (D6) of above-mentioned third phase the 3rd series arm and the series connection node of the 9th auxiliary induction (L6), six reverse booster diode (D61, D62) the series connection node links to each other;
The tertiary voltage input (Vc) of described the 3rd coupling inductance (Lc2) and the 3rd main inductance (Lc1) end of different name mutually is connected in the series connection node of the 6th auxiliary induction (L3) and the 9th auxiliary induction (L6), and described the 3rd coupling inductance (Lc2) and the tertiary voltage input (Vc) of the 3rd main inductance (Lc1) end mutually of the same name and the 3rd bidirectional power pipe (S3) are connected in the node of connecting of third phase second series arm and third phase the 4th series arm.
5, three-phase activity coefficient adjustment transformation of electrical energy device as claimed in claim 4, it is characterized in that: described first to three main inductance (La1, Lb1, Lc1) be respectively have centre tapped first to the three-winding (La, Lb, Lc) the whole winding between first terminals and second terminals, and first to three coupling inductance (La2, Lb2, Lc2) is respectively the coiler part between the above-mentioned centre cap and second terminals.
6, three-phase activity coefficient adjustment transformation of electrical energy device as claimed in claim 4, it is characterized in that: described first to three main inductance (La1, Lb1, Lc1) and its corresponding first to three coupling inductance (La2, Lb2, Lc2) are coupled respectively and constitute first to three transformer (La, Lb, Lc), described first to three main inductance (La1, Lb1, Lc1) is a former limit winding, and described first to three coupling inductance (La2, Lb2, Lc2) is the secondary winding.
CNB2003101210032A 2003-12-29 2003-12-29 Three phase power factor correction electric energy converter Expired - Lifetime CN100356672C (en)

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