CN203491943U - Winding switching device used for wide rotating speed range operation of three-phase permanent magnetic generator - Google Patents
Winding switching device used for wide rotating speed range operation of three-phase permanent magnetic generator Download PDFInfo
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- CN203491943U CN203491943U CN201320606823.XU CN201320606823U CN203491943U CN 203491943 U CN203491943 U CN 203491943U CN 201320606823 U CN201320606823 U CN 201320606823U CN 203491943 U CN203491943 U CN 203491943U
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Abstract
The utility model relates to a winding switching device used for wide rotating speed range operation of a three-phase permanent magnetic generator. The winding switching device (3) is provided with a three-phase diode bridge DB1 and a three-phase diode bridge DB2, a DC output side of the three-phase diode bridge DB1 is connected with a diode D7 and a diode D8, a DC output side of the three-phase diode bridge DB2 is connected with a diode D9 and a diode D10, and the diode D7, the diode D8, the diode D9 and the diode D10 are diodes used for preventing backflow. The anode terminal of the diode D7 is connected with a DC output terminal of the three-phase diode bridge DB1 and a collector electrode of a bipolar transistor SW1, and the cathode terminal of the diode D8 is connected with a DC output negative terminal of the three-phase diode bridge DB1 and the emitter electrode of the bipolar transistor SW1; and the anode terminal of the diode D9 is connected with a DC output terminal of the three-phase diode bridge DB2 and a collector electrode of a bipolar transistor SW2, and the cathode terminal of the diode D10 is connected with a DC output negative terminal of the three-phase diode bridge DB2 and the emitter electrode of the bipolar transistor SW2.
Description
Technical field
The utility model belongs to gen-set technical field, relate in particular to a kind of winding change-over switch that expands the threephase alternator of magneto speed range of operation by switching the winding of threephase alternator, be the industry field that comprises alternator for vehicle, wind-driven generator, aerogenerator iso-variable velocity constant frequency generation pattern be object.
Background technology
In added the integrated power generation system that inverter is combined into by magneto, as for obtaining fully large torque in constant speed, can realize the method for the running in speed change region simultaneously, adopt winding changing method.The switch all to use in existing winding changing method with mechanical contacts switches to prerequisite.Employing is with the switching over of contact.Therefore, the required time of mechanism action of incision contact is necessary.And, consider the contact life-span, once after inverter side turn-off current, so-called no current switching is carried out in expectation.If by these operate times comprehensive, become and can not ignore the dead time of (tens of milliseconds conventionally).
Summary of the invention
The purpose of this utility model is a kind of three-phase permanent magnet electricity generator winding change-over switch for wide speed range operation proposing in view of the above problems.Realizing the technical scheme that the purpose of this utility model takes is: this winding change-over switch is provided with three-phase diode bridge DB1 and three-phase diode bridge DB2, direct current outlet side at three-phase diode bridge DB1 and three-phase diode bridge DB2 connects respectively diode D7, D8 and diode D9, D10, and diode D7, D8 and diode D9, D10 are the diodes flowing backwards for preventing.The anode tap of diode D7 is connected with the DC output end of three-phase diode bridge DB1 and the collector electrode of bipolar transistor SW1, and the cathode terminal of diode D8 is connected with the negative terminal of the direct current output of three-phase diode bridge DB1 and the emitter of bipolar transistor SW1.The anode tap of diode D9 is connected with the DC output end of three-phase diode bridge DB2 and the collector electrode of bipolar transistor SW2, and the cathode terminal of diode D10 is connected with the negative terminal of the direct current output of three-phase diode bridge DB2 and the emitter of bipolar transistor SW2.Bipolar transistor SW1, SW2 cross over direct current outlet side in order to open and close the direct current outlet side of three-phase diode bridge DBl, diode bridge DB2 to connect separately.SW1, SW2 are self such extinguishing arc type thyristors of bipolar transistor or IGBT.
The utlity model has and can shorten winding and switch the needed time; By not using under the condition of the switch with mechanical movable part, do one's utmost to reduce the use that winding switches the thyristor of use, and realize small-sized and cost degradation; Because switching the energy producing, be absorbed into the smmothing capacitor of inverter, thereby can be for inverter recycling; As spread effect, compare with using the switching mode of contact, can within the short especially time, carry out winding switching, thereby can the switching of the machinery on as load and device impact is restricted to minimum.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model;
Fig. 2 is the utility model application structure schematic diagram on three-phase permanent magnet electricity generator.
In figure, 1, inverter, 2, generator, 3, winding change-over switch.
Embodiment
By reference to the accompanying drawings the utility model is described.With reference to Fig. 1, this winding change-over switch 3 is provided with three-phase diode bridge DB1 and three-phase diode bridge DB2, direct current outlet side at three-phase diode bridge DB1 and three-phase diode bridge DB2 connects respectively diode D7, D8 and diode D9, D10, and diode D7, D8 and diode D9, D10 are the diodes flowing backwards for preventing.The anode tap of diode D7 is connected with the DC output end of three-phase diode bridge DB1 and the collector electrode of bipolar transistor SW1, and the cathode terminal of diode D8 is connected with the negative terminal of the direct current output of three-phase diode bridge DB1 and the emitter of bipolar transistor SW1.The anode tap of diode D9 is connected with the DC output end of three-phase diode bridge DB2 and the collector electrode of bipolar transistor SW2, and the cathode terminal of diode D10 is connected with the negative terminal of the direct current output of three-phase diode bridge DB2 and the emitter of bipolar transistor SW2.Bipolar transistor SW1, SW2 cross over direct current outlet side in order to open and close the direct current outlet side of three-phase diode bridge DBl, diode bridge DB2 to connect separately.SW1, SW2 are self such extinguishing arc type thyristors of bipolar transistor or IGBT.
The application example of the utility model winding change-over switch is as follows:
With reference to Fig. 2, Fig. 2 is the present invention's application structure schematic diagram on three-phase permanent magnet electricity generator.In figure, the 1st, inverter, the 2nd, generator, the 3rd, winding change-over switch.Inverter 1 mainly consists of diode D1～D6, and direct-flow input end of switching device shifter 3 is connected with terminal TP, the TN of inverter 1.Each phase winding of generator 2 is formed by 2 coils, and intermediate terminal TU2, TV2, TW2 that these coils are connected are removed as the outside terminal of generator.One end TU1, the TV1 of each phase winding terminal of generator 2, TW1 are connected with the input terminal of each phase of inverter 1 separately.The AC input terminal of three-phase diode bridge DB2 in winding change-over switch 3 is connected with terminal TU3, TV3, TW3 in generator 2 respectively.The AC input terminal of three-phase diode bridge DB1 in switching device shifter 3 is connected with terminal TU2, TV2, TW2 in generator 2 respectively.Formation to winding change-over switch 3 describes: diode D7, D8 are the diodes being connected with the direct current outlet side of three-phase diode bridge DB1.Diode D9, D10 are the diodes being connected with the direct current outlet side of three-phase diode bridge DB2.Refluence prevents that diode D7, D9 are connected with the DC bus of inverter.Be that diode D7, D9 are connected with the input terminal TP of the DC side of inverter 1, diode D8, D10 are connected to the input terminal TN of the DC side of inverter 1.The energy of the electric current of the three-phase diode bridge of flowing through like this DBl, DB2 is absorbed into the smmothing capacitor C of inverter 1, can supply inverter utilization.Diode D9, D10 are the same with diode D7, D8, are the diodes flowing backwards for preventing.One end of the anode-side of diode D7 is connected with the collector electrode of bipolar transistor SW1 with the DC output end of three-phase diode bridge DB1.One end of the cathode side of diode D8 is connected with the emitter of bipolar transistor SW1 with the negative terminal of the direct current output of three-phase diode bridge DB1.One end of the anode-side of diode D9 is connected with the collector electrode of bipolar transistor SW2 with the DC output end of three-phase diode bridge DB2.The cathode terminal of diode D10 is connected with the emitter of bipolar transistor SW2 with the negative terminal of the direct current output of three-phase diode bridge DB2.
The course of work of the present utility model is as follows:
With reference to Fig. 2, once only connect bipolar transistor SW1 (SW2 disconnection), generator terminal TU2, TV2, TW2 just form short circuit by three-phase diode bridge DB1, the star-star connection output voltage that a part of TU1-TU2, the TV1-TV2 of generator 2 windings, TW1-TW2 form.Terminal TU3, the TV3 of generator 2, TW3, the induced voltage due to the electromagnetic coupled between winding, however this voltage is absorbed in the smmothing capacitor C of inverter 1 after three-phase diode bridge DB2 rectification.This formation is compared with using the situation of whole generator windings, because impedance is low, even thereby in high-speed region, also can export sufficient electrical power, be applicable to high-speed cruising.Once only connect bipolar transistor SW2 (SW1 disconnection), terminal TU3, TV3, the TW3 of generator 2 are just short-circuited by three-phase diode bridge DB2, by TU1-TU3, the TV1-TV3 of whole windings, the star-star connection output voltage that TW1-TW3 forms.Terminal TU2, the TV2 of generator 2, TW2, the induced voltage due to the electromagnetic coupled between winding, however this voltage is absorbed in the smmothing capacitor C of inverter after three-phase diode bridge DB1 rectification.This formation is compared with using the situation of a part of the former motor winding, because impedance is high, even thereby in low-speed region, also can export sufficient electrical power, thereby be applicable to low-speed running.Therefore, corresponding with running speed, by selectivity, connect bipolar transistor SW1 or SW2, can expand the operational speed range of generator.
In addition, the alternating current generator that the utility model is used, no matter be induction type, synchronized model, or type rotary-type, straight ejector half, no matter which kind of alternating current generator can be applied.
Have: each phase winding consists of a plurality of windings, the two-terminal of the connection terminal that above-mentioned a plurality of winding is linked mutually and each phase winding is being arranged on to the alternating current generator of generator outside; Suitably switch the winding switch unit of above-mentioned connection terminal; And to above-mentioned inverter, provide in the winding change-over switch of threephase alternator of variable voltage of fixed range, due to above-mentioned winding switch unit by: one end of above-mentioned each phase winding is connected, a plurality of three phase rectifiers unit that the other end is connected with the AC input terminal of each three phase rectifier unit with above-mentioned connection terminal by each with above-mentioned inverter; And the semiconductor switch at two ends of being arranged to open and close the direct current outlet side of above-mentioned three phase rectifier unit forms.And, the winding change-over switch of threephase alternator of the present invention, also there is following characteristics: diode is passed through at the two ends at each direct current outlet side of above-mentioned a plurality of three phase rectifiers unit, the direct current outlet side of above-mentioned three phase rectifier unit and the above-mentioned DC bus of above-mentioned inverter are connected, the setting party of this diode is to being, when above-mentioned semiconductor switch disconnects, make to flow to from the electric current of above-mentioned three phase rectifier unit outflow the DC bus of above-mentioned inverter, when above-mentioned semiconductor switch is connected, make electric current can not flow back to from the DC bus of above-mentioned inverter above-mentioned semiconductor switch.
Because being uses semi-conductive switching, thereby in the short time, complete and switch action at the utmost point, available a small amount of semiconductor element forms.And, even if select part to use the pattern of winding, also can avoid extremely becoming large at the voltage of residue terminal induction.
Claims (2)
1. the three-phase permanent magnet electricity generator winding change-over switch for wide speed range operation, it is characterized in that: this winding change-over switch (3) is provided with three-phase diode bridge DB1 and three-phase diode bridge DB2, direct current outlet side at three-phase diode bridge DB1 and three-phase diode bridge DB2 connects respectively diode D7, D8 and diode D9, D10, and diode D7, D8 and diode D9, D10 are the diodes flowing backwards for preventing; The anode tap of diode D7 is connected with the DC output end of three-phase diode bridge DB1 and the collector electrode of bipolar transistor SW1, and the cathode terminal of diode D8 is connected with the negative terminal of the direct current output of three-phase diode bridge DB1 and the emitter of bipolar transistor SW1; The anode tap of diode D9 is connected with the DC output end of three-phase diode bridge DB2 and the collector electrode of bipolar transistor SW2, and the cathode terminal of diode D10 is connected with the negative terminal of the direct current output of three-phase diode bridge DB2 and the emitter of bipolar transistor SW2.
2. according to the three-phase permanent magnet electricity generator winding change-over switch for wide speed range operation claimed in claim 1, it is characterized in that: direct-flow input end of described switching device shifter (3) is connected with terminal TP, the TN of inverter (1), the AC input terminal of three-phase diode bridge DB1 in winding change-over switch (3) is connected with intermediate terminal TU2, TV2, the TW2 of each phase in generator (2) respectively, and the AC input terminal of the three-phase diode bridge DB2 in winding change-over switch (3) is connected with TU3, TV3, TW3 terminal in generator (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606823.XU CN203491943U (en) | 2013-09-29 | 2013-09-29 | Winding switching device used for wide rotating speed range operation of three-phase permanent magnetic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606823.XU CN203491943U (en) | 2013-09-29 | 2013-09-29 | Winding switching device used for wide rotating speed range operation of three-phase permanent magnetic generator |
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| Publication Number | Publication Date |
|---|---|
| CN203491943U true CN203491943U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320606823.XU Expired - Fee Related CN203491943U (en) | 2013-09-29 | 2013-09-29 | Winding switching device used for wide rotating speed range operation of three-phase permanent magnetic generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518719A (en) * | 2013-09-29 | 2015-04-15 | 济南吉美乐电源技术有限公司 | Three-phase permanent magnetic generator winding shifting device used to operate in wide rotating speed range |
-
2013
- 2013-09-29 CN CN201320606823.XU patent/CN203491943U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518719A (en) * | 2013-09-29 | 2015-04-15 | 济南吉美乐电源技术有限公司 | Three-phase permanent magnetic generator winding shifting device used to operate in wide rotating speed range |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20170929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |