CN103944333A - Pulse speed adjusting type wound rotor asynchronous motor - Google Patents
Pulse speed adjusting type wound rotor asynchronous motor Download PDFInfo
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- CN103944333A CN103944333A CN201410174589.7A CN201410174589A CN103944333A CN 103944333 A CN103944333 A CN 103944333A CN 201410174589 A CN201410174589 A CN 201410174589A CN 103944333 A CN103944333 A CN 103944333A
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- 238000004804 winding Methods 0.000 claims abstract description 137
- 239000003990 capacitor Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- NVLRFXKSQQPKAD-UHFFFAOYSA-N tricarbon Chemical compound [C]=C=[C] NVLRFXKSQQPKAD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 3
- 230000035485 pulse pressure Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The invention relates to a three-phase asynchronous motor, in particular to a pulse speed adjusting type wound rotor asynchronous motor. The problem that an existing three-phase asynchronous motor is complex in speed adjusting process, and speed adjusting is not smooth is solved. The pulse speed adjusting type wound rotor asynchronous motor comprises a stator iron core, a rotor iron core, a stator winding wound on the stator iron core, a rotor winding wound on the rotor iron core, a first capacitor, a second capacitor, a third capacitor, a first carbon brush, a second carbon brush, a third carbon brush, a first three-phase alternating current contactor, a second three-phase alternating current contactor, an electronic device with power capable of being shut down and a three-phase rectifier bridge composed of a first diode, a second diode, a third diode, a fourth diode, a fifth diode and a sixth diode. The stator winding comprises an A-phase first stator winding, an A-phase second stator winding, a B-phase first stator winding, a B-phase second stator winding, a C-phase first stator winding and a C-phase second stator winding. The rotor winding comprises an A-phase rotor winding, a B-phase rotor winding and a C-phase rotor winding. The pulse speed adjusting type wound rotor asynchronous motor is suitable for various fields.
Description
Technical field
The present invention relates to threephase asynchronous machine, specifically a kind of chopper speed control type wound rotor asynchronous machine.
Background technology
Threephase asynchronous machine in actual applications, need to carry out speed governing according to application requirements.Existing threephase asynchronous machine, because self structure is limit, need to carry out speed governing by stator pulse pressure regulation and rotor pulse control.Wherein, stator pulse pressure regulation refers to unties the neutral end of the stator winding of threephase asynchronous machine and is connected with the ac input end of three-phase commutation bridge, and can turn-off power electronic device and be connected with the DC output end of three-phase commutation bridge, then the conducting pulse duration that can turn-off power electronic device by changing changes the voltage of stator winding, changes thus the rotating speed of motor.Rotor pulse control refers to the rotor winding of threephase asynchronous machine is connected with the ac input end of three-phase commutation bridge, and can turn-off power electronic device and be connected with the DC output end of three-phase commutation bridge, then the conducting pulse duration that can turn-off power electronic device by changing changes the equivalent additional resistance of rotor winding, changes thus the rotating speed of motor.No matter show but put into practice, be stator pulse pressure regulation or rotor pulse control, all has speed regulation process complexity, the rough problem of speed governing.Based on this, be necessary to invent a kind of brand-new threephase asynchronous machine, the problems referred to above that exist to solve existing threephase asynchronous machine.
Summary of the invention
The present invention, in order to solve existing threephase asynchronous machine speed regulation process complexity, the rough problem of speed governing, provides a kind of chopper speed control type wound rotor asynchronous machine.
The present invention adopts following technical scheme to realize: a kind of chopper speed control type wound rotor asynchronous machine, comprises stator core, rotor core, is wound in stator winding in stator core, is wound in rotor winding in rotor core, first-, tri-capacitors, first-, tri-carbon brush, the first-the second three-phase ac contactor, the three-phase commutation bridge that can turn-off power electronic device, be made up of first-, six diodes;
Described stator winding comprises A the first stator winding, A the second stator winding, B the first stator winding, B the second stator winding, C the first stator winding, C the second stator winding mutually mutually mutually mutually mutually mutually;
Described rotor winding comprises A phase rotor winding, B phase rotor winding, C phase rotor winding;
The A mutually head end of the first stator winding is connected with the head end of A phase the second stator winding, and this tie point is as the A line end that joins; The B mutually head end of the first stator winding is connected with the head end of B phase the second stator winding, and this tie point is as the B line end that joins; The C mutually head end of the first stator winding is connected with the head end of C phase the second stator winding, and this tie point is as the C line end that joins;
The A mutually tail end of the first stator winding is connected with the tail end of B phase the second stator winding, and this tie point is as A phase adjustable side; The B mutually tail end of the first stator winding is connected with the tail end of C phase the second stator winding, and this tie point is as B phase adjustable side; The C mutually tail end of the first stator winding is connected with the tail end of A phase the second stator winding, and this tie point is as C phase adjustable side;
The head end of the head end of A phase rotor winding, the head end of B phase rotor winding, C phase rotor winding links together; The tail end of A phase rotor winding is connected with A phase adjustable side by the first carbon brush; The tail end of B phase rotor winding is connected with B phase adjustable side by the second carbon brush; The tail end of C phase rotor winding is connected with C phase adjustable side by the 3rd carbon brush;
The two ends of the first capacitor are connected with join line end and A phase adjustable side of A respectively; The two ends of the second capacitor are connected with join line end and B phase adjustable side of B respectively; The two ends of the 3rd capacitor are connected with join line end and C phase adjustable side of C respectively;
One end of three groups of contacts of the first three-phase ac contactor is connected with A line end, B line end, the C line end that joins that joins that joins respectively; One end of three groups of contacts of the second three-phase ac contactor is connected with A phase adjustable side, B phase adjustable side, C phase adjustable side respectively; The other end of three groups of contacts of the second three-phase ac contactor links together;
Three ac input ends of three-phase commutation bridge are connected with A phase adjustable side, B phase adjustable side, C phase adjustable side respectively; The direct current positive output end of three-phase commutation bridge is connected with the collector electrode that can turn-off power electronic device; The direct current negative output terminal of three-phase commutation bridge is connected with the emitter that can turn-off power electronic device.
When work, the base stage that can turn-off power electronic device is connected with PWM controller, and the other end of three groups of contacts of the first three-phase ac contactor is connected with three outputs of three-phase alternating-current supply respectively.Specific works process is as follows: first, closed the first three-phase ac contactor, stator winding and rotor winding are switched on thus.Now, the induced potential phasor of stator winding is close to triangle, and the frequency of the induced potential phasor of rotor winding is with the frequency of the induced potential phasor of stator winding close to identical, and the electric current of rotor winding is power current, the revolutional slip of motor is close to 1, and the rotating speed of motor is close to zero.Then the conducting pulse duration that, can turn-off power electronic device by the control of PWM controller increases gradually.Along with conducting pulse duration increases gradually, the phase voltage of three ac input ends of three-phase commutation bridge (is A phase adjustable side, B phase adjustable side, the phase voltage of C phase adjustable side) reduce gradually, the frequency of the induced potential phasor of stator winding raises gradually, the frequency of the rotating magnetic field of stator winding raises gradually, rotor winding is subject to the effect of rotating magnetic field and through three-phase commutation bridge with can turn-off power electronic device and form independent through-flow loop, the frequency of the induced potential phasor of rotor winding reduces gradually, rotor winding produces electromagnetic torque thus, the rotating speed of motor raises thus gradually.When turn-offing the conducting pulse duration of power electronic device while increasing to close to cut-off width, the phase voltage (being the phase voltage of A phase adjustable side, B phase adjustable side, C phase adjustable side) of three ac input ends of three-phase commutation bridge is down to close to 1/4 stator winding phase voltage value, rotor winding produces the electromagnetic torque close to 1/2 nominal torque thus, and the rotating speed of motor rises to 1/2 rated speed thus.When turn-offing the conducting pulse duration of power electronic device while increasing to maximum, the phase voltage (being the phase voltage of A phase adjustable side, B phase adjustable side, C phase adjustable side) of three ac input ends of three-phase commutation bridge is down to close to zero, rotor winding produces the electromagnetic torque close to nominal torque thus, and the rotating speed of motor rises to thus close to rated speed.Subsequently, closed the second three-phase ac contactor, the rotating speed of motor remains on rated speed thus.In this process, because the head end of homophase two windings of stator winding connects, if the electric current of rotor winding is entered from a winding of homophase, must go out from another winding, making thus the electric current of rotor winding is positive and negative counteracting to the effect of stator winding, but the resistance of two windings can play the effect that improves electromagnetic torque.Because first-, tri-capacitors are in parallel with stator winding, make the inductance energy of stator winding to form inner samsara by first-, tri-capacitors on the one hand, effectively reduce thus the reactive loss of motor, make on the other hand in the time that moment, shutoff can be turn-offed power electronic device, stator winding can form continuous current circuits by first-, tri-capacitors.Based on said process, compared with existing threephase asynchronous machine, a kind of chopper speed control type wound rotor asynchronous machine of the present invention is based on brand new, realize by regulate the conducting pulse duration that can turn-off power electronic device to regulate the frequency of the induced potential phasor of stator winding and rotor winding simultaneously, effectively simplify thus speed regulation process, and make speed governing more level and smooth, thereby efficiently solve existing threephase asynchronous machine speed regulation process complexity, the rough problem of speed governing.
The present invention is rational in infrastructure, it is ingenious to design, and efficiently solves existing threephase asynchronous machine speed regulation process complexity, the rough problem of speed governing, is applicable to various fields.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of chopper speed control type wound rotor asynchronous machine, comprises stator core, rotor core, is wound in stator winding in stator core, is wound in rotor winding in rotor core, first-, tri-capacitor C01-C03, first-, tri-carbon brush HT1-HT3, the first-the second three-phase ac contactor K1-K2, the three-phase commutation bridge that can turn-off power electronic device T1, be made up of first-, six diode D1-D6;
Described stator winding comprises A the first stator winding Wa1, A the second stator winding Wa2, B the first stator winding Wb1, B the second stator winding Wb2, C the first stator winding Wc1, C the second stator winding Wc2 mutually mutually mutually mutually mutually mutually;
Described rotor winding comprises A phase rotor winding W10, B phase rotor winding W20, C phase rotor winding W30;
The A mutually head end of the first stator winding Wa1 is connected with the head end of A phase the second stator winding Wa2, and this tie point is as the A line end A1 that joins; The B mutually head end of the first stator winding Wb1 is connected with the head end of B phase the second stator winding Wb2, and this tie point is as the B line end B1 that joins; The C mutually head end of the first stator winding Wc1 is connected with the head end of C phase the second stator winding Wc2, and this tie point is as the C line end C1 that joins;
The A mutually tail end of the first stator winding Wa1 is connected with the tail end of B phase the second stator winding Wb2, and this tie point is as A phase adjustable side A01; The B mutually tail end of the first stator winding Wb1 is connected with the tail end of C phase the second stator winding Wc2, and this tie point is as B phase adjustable side B01; The C mutually tail end of the first stator winding Wc1 is connected with the tail end of A phase the second stator winding Wa2, and this tie point is as C phase adjustable side C01;
The head end of the head end of A phase rotor winding W10, the head end of B phase rotor winding W20, C phase rotor winding W30 links together; The tail end of A phase rotor winding W10 is connected with A phase adjustable side A01 by the first carbon brush HT1; The tail end of B phase rotor winding W20 is connected with B phase adjustable side B01 by the second carbon brush HT2; The tail end of C phase rotor winding W30 is connected with C phase adjustable side C01 by the 3rd carbon brush HT3;
The two ends of the first capacitor C01 are connected with join line end A1 and A phase adjustable side A01 of A respectively; The two ends of the second capacitor C02 are connected with join line end B1 and B phase adjustable side B01 of B respectively; The two ends of the 3rd capacitor C03 are connected with join line end C1 and C phase adjustable side C01 of C respectively;
One end of three groups of contacts of the first three-phase ac contactor K1 is connected with A line end A1, B line end B1, the C line end C1 that joins that joins that joins respectively; One end of three groups of contacts of the second three-phase ac contactor K2 is connected with A phase adjustable side A01, B phase adjustable side B01, C phase adjustable side C01 respectively; The other end of three groups of contacts of the second three-phase ac contactor K2 links together;
Three ac input ends of three-phase commutation bridge are connected with A phase adjustable side A01, B phase adjustable side B01, C phase adjustable side C01 respectively; The direct current positive output end of three-phase commutation bridge is connected with the collector electrode that can turn-off power electronic device T1; The direct current negative output terminal of three-phase commutation bridge is connected with the emitter that can turn-off power electronic device T1.
When concrete enforcement, the described power electronic device T1 that turn-offs is IGBT.Described first-, tri-capacitor C01-C03 are Monophase electric power capacitor, and the rated voltage of first-, tri-capacitor C01-C03 is 230-264V.
Claims (3)
1. a chopper speed control type wound rotor asynchronous machine, is characterized in that: comprise stator core, rotor core, be wound in stator winding in stator core, be wound in rotor winding in rotor core, first-, tri-capacitors (C01-C03), first-, tri-carbon brush (HT1-HT3), the first-the second three-phase ac contactor (K1-K2), the three-phase commutation bridge that can turn-off power electronic device (T1), be made up of first-, six diodes (D1-D6);
Described stator winding comprises A the first stator winding (Wa1), A the second stator winding (Wa2), B the first stator winding (Wb1), B the second stator winding (Wb2), C the first stator winding (Wc1), C the second stator winding (Wc2) mutually mutually mutually mutually mutually mutually;
Described rotor winding comprises A phase rotor winding (W10), B phase rotor winding (W20), C phase rotor winding (W30);
The A mutually head end of the first stator winding (Wa1) is connected with the head end of A phase the second stator winding (Wa2), and this tie point is as the A line end (A1) that joins; The B mutually head end of the first stator winding (Wb1) is connected with the head end of B phase the second stator winding (Wb2), and this tie point is as the B line end (B1) that joins; The C mutually head end of the first stator winding (Wc1) is connected with the head end of C phase the second stator winding (Wc2), and this tie point is as the C line end (C1) that joins;
The A mutually tail end of the first stator winding (Wa1) is connected with the tail end of B phase the second stator winding (Wb2), and this tie point is as A phase adjustable side (A01); The B mutually tail end of the first stator winding (Wb1) is connected with the tail end of C phase the second stator winding (Wc2), and this tie point is as B phase adjustable side (B01); The C mutually tail end of the first stator winding (Wc1) is connected with the tail end of A phase the second stator winding (Wa2), and this tie point is as C phase adjustable side (C01);
The head end of the head end of A phase rotor winding (W10), the head end of B phase rotor winding (W20), C phase rotor winding (W30) links together; The tail end of A phase rotor winding (W10) is connected with A phase adjustable side (A01) by the first carbon brush (HT1); The tail end of B phase rotor winding (W20) is connected with B phase adjustable side (B01) by the second carbon brush (HT2); The tail end of C phase rotor winding (W30) is connected with C phase adjustable side (C01) by the 3rd carbon brush (HT3);
The two ends of the first capacitor (C01) are connected with join line end (A1) and A phase adjustable side (A01) of A respectively; The two ends of the second capacitor (C02) are connected with join line end (B1) and B phase adjustable side (B01) of B respectively; The two ends of the 3rd capacitor (C03) are connected with join line end (C1) and C phase adjustable side (C01) of C respectively;
One end of three groups of contacts of the first three-phase ac contactor (K1) is connected with A line end (A1), B line end (B1), the C line end (C1) that joins that joins that joins respectively; One end of three groups of contacts of the second three-phase ac contactor (K2) is connected with A phase adjustable side (A01), B phase adjustable side (B01), C phase adjustable side (C01) respectively; The other end of three groups of contacts of the second three-phase ac contactor (K2) links together;
Three ac input ends of three-phase commutation bridge are connected with A phase adjustable side (A01), B phase adjustable side (B01), C phase adjustable side (C01) respectively; The direct current positive output end of three-phase commutation bridge is connected with the collector electrode that can turn-off power electronic device (T1); The direct current negative output terminal of three-phase commutation bridge is connected with the emitter that can turn-off power electronic device (T1).
2. a kind of chopper speed control type wound rotor asynchronous machine according to claim 1, is characterized in that: the described power electronic device (T1) of turn-offing is for IGBT.
3. a kind of chopper speed control type wound rotor asynchronous machine according to claim 1 and 2, it is characterized in that: described first-, tri-capacitors (C01-C03) are Monophase electric power capacitor, and the rated voltage of first-, tri-capacitors (C01-C03) is 230-264V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174589.7A CN103944333A (en) | 2014-04-29 | 2014-04-29 | Pulse speed adjusting type wound rotor asynchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174589.7A CN103944333A (en) | 2014-04-29 | 2014-04-29 | Pulse speed adjusting type wound rotor asynchronous motor |
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| Publication Number | Publication Date |
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| CN103944333A true CN103944333A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410174589.7A Pending CN103944333A (en) | 2014-04-29 | 2014-04-29 | Pulse speed adjusting type wound rotor asynchronous motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273766A1 (en) * | 2005-06-07 | 2006-12-07 | Fuji Cera-Tech Co., Ltd. | Permanent-magnet generator with high-power output |
| CN101136572A (en) * | 2007-10-16 | 2008-03-05 | 刘建平 | Duplex winding asynchronous motor |
| CN101227115A (en) * | 2007-11-24 | 2008-07-23 | 刘建平 | Combination compensated type wound rotor asynchronous machine |
| WO2009053520A1 (en) * | 2007-10-26 | 2009-04-30 | Abb Oy | Arrangement in a frequency converter controlled direct connected drive |
| CN103546087A (en) * | 2013-09-30 | 2014-01-29 | 刘建平 | Non-frequency conversion capacitance speed regulation and winding connection circuit of asynchronous motor |
-
2014
- 2014-04-29 CN CN201410174589.7A patent/CN103944333A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273766A1 (en) * | 2005-06-07 | 2006-12-07 | Fuji Cera-Tech Co., Ltd. | Permanent-magnet generator with high-power output |
| CN101136572A (en) * | 2007-10-16 | 2008-03-05 | 刘建平 | Duplex winding asynchronous motor |
| WO2009053520A1 (en) * | 2007-10-26 | 2009-04-30 | Abb Oy | Arrangement in a frequency converter controlled direct connected drive |
| CN101227115A (en) * | 2007-11-24 | 2008-07-23 | 刘建平 | Combination compensated type wound rotor asynchronous machine |
| CN103546087A (en) * | 2013-09-30 | 2014-01-29 | 刘建平 | Non-frequency conversion capacitance speed regulation and winding connection circuit of asynchronous motor |
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Application publication date: 20140723 |