CN101707464A - Anti-reversion starting device of line-start permanent magnet synchronous motor and control method thereof - Google Patents
Anti-reversion starting device of line-start permanent magnet synchronous motor and control method thereof Download PDFInfo
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- CN101707464A CN101707464A CN200910242205A CN200910242205A CN101707464A CN 101707464 A CN101707464 A CN 101707464A CN 200910242205 A CN200910242205 A CN 200910242205A CN 200910242205 A CN200910242205 A CN 200910242205A CN 101707464 A CN101707464 A CN 101707464A
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Abstract
The invention discloses an anti-reversion starting device of a line-start permanent magnet synchronous motor and a control method thereof. The anti-reversion starting device comprises a microprocessor unit, a position detection unit, an inverter and the line-start permanent magnet synchronous motor. The rotor position detection unit is connected with hall elements in the line-start permanent magnet synchronous motor, wherein the hall elements are positioned on an end cover and/or a stator iron core in the motor and arranged at equal electrical angle intervals, and the signals of the hall elements are sent to the rotor position detection unit; the rotor position detection unit is connected with the microprocessor unit and processes input; the microprocessor unit is connected with the inverter and outputs six-channel PWM signals to the inverter to control the on and off of the inverter after the signals of the hall elements are processed by the microprocessor unit; and the inverter is connected with the three-phase winding of the permanent magnet synchronous motor. The initial phase of three-phase winding of the motor is determined according to the position of the rotor when the three-phase winding supplies power so as to control the inverter; and the starting reversion problem of the line-start permanent magnet synchronous motor is solved by simply improving an ordinary frequency converter.
Description
Technical field
The present invention relates to a kind of motor anti-reversal starting device, especially a kind of anti-reversion starting device of line-start permanent magnet synchronous motor and control method.
Background technology
Line-start permanent magnetic synchronous motor has the characteristics of induction machine and permagnetic synchronous motor concurrently, when connecing common frequency power network, the asynchronous torque that relies on the interaction of stator rotating magnetic field and cage-type rotor to produce realizes starting, operates in synchronous speed afterwards, and cage-type rotor no longer works.This kind motor has plurality of advantages such as high efficiency, High Power Factor, high torque density, and the effect that can rely on cage-type rotor when step-out comes back to the synchronous operation state, thereby have good application prospects in a plurality of industries such as weaving, oil fields, received great concern.
But the starting current of line-start permanent magnetic synchronous motor is very big, and in the less occasion of net capacity, across-the-line starting is difficult to realize.In this case, can adopt the varying frequency starting mode.In starting process, stator three-phase current frequency raises gradually, and circular magnetomotive force of the rotation of generation and rotor generation relative motion produce electromagnetic torque, and rotor is rotated along the magnetomotive force direction.
But owing to can't predict initial position of rotor, the situation that stator field lags behind rotor permanent magnet magnetic field often appears in starting moment, causes the situation of motor rotor counter-rotating to take place.In some application, in fabrication processes, the change of team of sending out during starting causes braided wire to disconnect owing to stretching, so do not allow the appearance of motor counter-rotating situation.This problem seriously restricts the promotion and application of line-start permanent magnetic synchronous motor in some fields.
Summary of the invention
The objective of the invention is to overcome the counter-rotating defective when having the line-start permanent magnetic synchronous motor starting now, a kind of anti-reversal starting device and control method are provided.This device adopts rotor position detection unit, microprocessor unit, inverter and line-start permanent magnetic synchronous motor structure combining, use Hall element detection rotor initial position, determine the initial phase of permagnetic synchronous motor three-phase winding current according to the output signal of Hall element, finish the starting process that motor does not have counter-rotating by control inverter.
To achieve these goals, the present invention has taked following technical scheme.Apparatus of the present invention comprise microprocessor unit 1, position detection unit 3, inverter 4 and line-start permanent magnetic synchronous motor PMSM 2.Wherein:
Rotor position detection unit 3 links to each other with Hall element among the line-start permanent magnetic synchronous motor PMSM 2, Hall element is positioned at the end caps or the stator core place of motor internal, three Hall element 120 ° or 60 ° of electrical degrees arrangement installations at interval, its three-way output signal HALL1～HALL3 sends into rotor position detection unit 3;
Rotor position detection unit 3 is connected with microprocessor unit 1, delivers to microprocessor unit 1 after the Hall element signal HALL1～HALL3 of 3 pairs of inputs of rotor position detection unit handles;
Microprocessor unit 1 links to each other with inverter 4, and Hall element signal HALL1～HALL3 exports 6 road pwm signal PWM1～PWM6 and gives inverter to control its on off operating mode after handling through microprocessor unit 1;
The input energy source of inverter 4 is in power supply, and its output is connected with U, V, W three phase windings of permagnetic synchronous motor PMSM 2.
Control method of the present invention is characterised in that: be a kind ofly to determine the initial phase of motor three phase windings power supplies and then the method for decision inverter control strategy according to rotor-position.
(1) is starting point with stator A phase winding axis direction, the 360 ° of electrical degrees in space are equally divided into six intervals, determine the initial phase of threephase stator electric current in asynchronous starting moment according to the interval at rotor magnetomotive force place.
(2) judge the rotor-position interval according to three Hall element states, and determine A phase winding electric current initial phase thus, B phase, 120 ° of electrical degrees of C and A phase current phase place mutual deviation.
(3), make starting stator magnet kinetic potential constantly be ahead of a certain angle of rotor magnetomotive force according to A phase, B phase and C initial phase control inverter mutually.
(4) be original position with starting stator magnet kinetic potential constantly, control its size and speed, reach synchronous speed until motor and finish starting process according to the constant voltage and frequency ratio mode.
The present invention compared with prior art has following remarkable advantages and beneficial effect:
(1) by Hall element detection rotor initial position, determine the initial phase and the phase order relation of threephase stator winding current with this, stator magnet kinetic potential and rotor magnetomotive force are cooperatively interacted, can effectively solve the counter-rotating problem in the line-start permanent magnetic synchronous motor starting process.
(2) adopt Hall element detection rotor position, compare, have remarkable advantages such as cost is low, installation is easy, circuit is simple, reliability height with position detection methods such as adopting photoelectric encoder or resolver.
(3) this starting device and method can only need make common frequency converter can accept hall element output signal by common frequency converter simple modifications is realized, and renewal starting control algolithm software gets final product.Like this, can solve the starting counter-rotating problem of line-start permanent magnetic synchronous motor based on common frequency converter, thereby the versatility of this starting device and control method is good.
Description of drawings
Fig. 1 is the anti-reversion starting device of line-start permanent magnet synchronous motor structure chart;
Fig. 2 stator magnet kinetic potential is determined schematic diagram.
Embodiment
The invention will be further described below in conjunction with Fig. 1, Fig. 2.
As shown in Figure 1, this device comprises microprocessor unit 1, line-start permanent magnetic synchronous motor 2, rotor position detection unit 3 and inverter 4.
Rotor position detection unit 3 links to each other with Hall element among the line-start permanent magnetic synchronous motor PMSM 2, and hall element output signal HALL1～HALL3 sends into rotor position detection unit 3, delivers to microprocessor unit 1 after the processing; Microprocessor unit 1 links to each other with inverter 4, and 6 road pwm signal PWM1～PWM6 of microprocessor unit 1 output give inverter, the on off operating mode of device for power switching in the control inverter; The output of inverter 4 is connected with U, V, W three phase windings of permagnetic synchronous motor PMSM 2.
As shown in Figure 2, F
A, F
B, F
CBe respectively the magnetomotive force of A, B, the generation of C three-phase winding current, F
mBe rotor magnetomotive force, F
0Be the synthetic magnetomotive force of stator, n is the counter clockwise direction rotary speed, and it is 60 ° of intervals of starting point with stator A phase winding axis direction that area I～VI is six.
Control method of the present invention is:
(1) starting moment Hall element output HALL1～HALL3, promptly rotor position information is sent into microprocessor unit 1.
(2) judge rotor magnetomotive force F according to the state of HALL1～HALL3 by microprocessor unit 1
mThe interval at place, and then definite three-phase winding current starting moment initial phase.
The corresponding relation of I～VI between the output signal HALL1～HALL3 when having provided Hall element in the table 1 and installing and A phase current phase theta and rotor location by 120 ° of electrical degrees of mutual deviation, B phase, 120 ° of electrical degrees of C and A phase current phase place mutual deviation.Wherein, " 1 " expression in the Hall element signal is output as high potential, and " 0 " expression is output as electronegative potential.
Table 1 rotor position detection and A phase phase angle are given
| Between the rotor location | The Hall element signal | A phase phase place |
| ??I | ??110 | ??θ° |
| ??II | ??100 | ??(θ+60)° |
| ??III | ??101 | ??(θ+2×60)° |
| ??IV | ??001 | ??(θ+3×60)° |
| ??V | ??011 | ??(θ+4×60)° |
| ??VI | ??010 | ??(θ+5×60)° |
(3) according to the initial phase of A phase, B phase and C phase current,, guarantee to be ahead of a certain angle of rotor magnetomotive force in the synthetic magnetomotive force of electric motor starting stator constantly by the output signal PWM1～PWM6 control inverter of microprocessor unit 1.
(4) starting is after constantly the stator magnet kinetic potential is determined, is original position with the stator magnet kinetic potential in this moment, controls magnetomotive size of stator and rotary speed according to the constant voltage and frequency ratio mode, finishes and do not have the starting process of reversing until making motor reach synchronous speed.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of utility model, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. an anti-reversion starting device of line-start permanent magnet synchronous motor comprises microprocessor unit, position detection unit, inverter and line-start permanent magnetic synchronous motor; It is characterized in that: described rotor position detection unit links to each other with Hall element in the line-start permanent magnetic synchronous motor, Hall element is positioned at the end caps and/or the stator core place of motor internal, three uniformly-spaced electrical degree arrangement installations of Hall element, its output signal is sent into rotor position detection unit;
Rotor position detection unit also is connected with microprocessor unit, and the Hall element signal of input is handled; Described microprocessor unit links to each other with inverter, and after the Hall element signal was handled through microprocessor unit, output multi-channel PWM signal gave inverter to control its on off operating mode;
The input energy source of described inverter is in power supply, and its output is connected with permagnetic synchronous motor three phase windings.
2. anti-reversion starting device of line-start permanent magnet synchronous motor according to claim 1 is characterized in that: described uniformly-spaced electrical degree is 120 ° or 60 °.
3. anti-reversion starting device of line-start permanent magnet synchronous motor according to claim 1 is characterized in that: described multi-channel PWM signal is six the tunnel.
4. the control method of the anti-reverse starting of line-start permanent magnetic synchronous motor is determined the initial phase that motor three phase windings are powered, control inverter according to rotor-position; It is characterized in that, may further comprise the steps:
4.1. with stator A phase winding axis direction is starting point, and the 360 ° of electrical degrees in space are equally divided into six intervals, determines the initial phase of threephase stator electric current according to the interval at rotor magnetomotive force place in asynchronous starting moment;
4.2. judge the rotor-position interval according to three Hall element states, and determine A phase winding electric current initial phase thus, B phase, 120 ° of electrical degrees of C and A phase current phase place mutual deviation;
4.3., make starting stator magnet kinetic potential constantly be ahead of a certain angle of rotor magnetomotive force according to A phase, B phase and C initial phase control inverter mutually;
4.4. with starting stator magnet kinetic potential constantly is original position, controls its size and speed according to the constant voltage and frequency ratio mode, reaches synchronous speed until motor and finishes starting process.
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| CN200910242205A CN101707464A (en) | 2009-12-04 | 2009-12-04 | Anti-reversion starting device of line-start permanent magnet synchronous motor and control method thereof |
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| CN200910242205A CN101707464A (en) | 2009-12-04 | 2009-12-04 | Anti-reversion starting device of line-start permanent magnet synchronous motor and control method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102420512A (en) * | 2010-09-27 | 2012-04-18 | 威斯达电器(中山)制造有限公司 | Synchronous motor device and control method thereof |
| CN102594224A (en) * | 2012-02-13 | 2012-07-18 | 河海大学常州校区 | Soft starter for line-start permanent magnet synchronous motor (LS-PMSM) |
| CN102938628A (en) * | 2011-09-06 | 2013-02-20 | 北京理工大学 | Method for positioning permanent magnet synchronous motor rotor initial position |
| CN103089659A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103592524A (en) * | 2013-11-28 | 2014-02-19 | 广州日滨科技发展有限公司 | Elevator synchronous motor UVW phase sequence recognition method and system |
| CN104518712A (en) * | 2014-12-18 | 2015-04-15 | 深圳市竹祥科技有限公司 | Novel motor system and driving method thereof |
| CN105897106A (en) * | 2016-04-10 | 2016-08-24 | 北京工业大学 | Permanent magnet synchronous motor starting method for mileage increasing system provided with hall position sensor |
| CN107171601A (en) * | 2017-06-22 | 2017-09-15 | 沈阳工业大学 | Six-phase motor break phase when torque-ripple minimization fault tolerant control method |
| CN108768218A (en) * | 2018-06-25 | 2018-11-06 | 上海电机学院 | A kind of device and method improving asynchronous starting and permanent magnet electric motor starting ability |
| CN110139989A (en) * | 2017-01-31 | 2019-08-16 | 株式会社日立产机系统 | Rotary displacement type compressor |
| CN110247588A (en) * | 2019-05-31 | 2019-09-17 | 惠州市蓝微电子有限公司 | A kind of mono pulse control method and system of hall electric machine |
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- 2009-12-04 CN CN200910242205A patent/CN101707464A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102420512A (en) * | 2010-09-27 | 2012-04-18 | 威斯达电器(中山)制造有限公司 | Synchronous motor device and control method thereof |
| CN102938628A (en) * | 2011-09-06 | 2013-02-20 | 北京理工大学 | Method for positioning permanent magnet synchronous motor rotor initial position |
| CN102938628B (en) * | 2011-09-06 | 2015-06-10 | 北京理工大学 | Method for positioning permanent magnet synchronous motor rotor initial position |
| CN103089659A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660B (en) * | 2011-10-31 | 2015-12-16 | 朱小雄 | A kind of water pump with water-shortage protection device |
| CN103089659B (en) * | 2011-10-31 | 2015-12-16 | 朱小雄 | A kind of water pump with water-shortage protection device |
| CN102594224A (en) * | 2012-02-13 | 2012-07-18 | 河海大学常州校区 | Soft starter for line-start permanent magnet synchronous motor (LS-PMSM) |
| CN103592524A (en) * | 2013-11-28 | 2014-02-19 | 广州日滨科技发展有限公司 | Elevator synchronous motor UVW phase sequence recognition method and system |
| CN104518712A (en) * | 2014-12-18 | 2015-04-15 | 深圳市竹祥科技有限公司 | Novel motor system and driving method thereof |
| CN105897106A (en) * | 2016-04-10 | 2016-08-24 | 北京工业大学 | Permanent magnet synchronous motor starting method for mileage increasing system provided with hall position sensor |
| CN105897106B (en) * | 2016-04-10 | 2018-08-21 | 北京工业大学 | A kind of increasing journey system starting method of permanent magnet synchronous motor using hall position sensor |
| CN110139989A (en) * | 2017-01-31 | 2019-08-16 | 株式会社日立产机系统 | Rotary displacement type compressor |
| CN110139989B (en) * | 2017-01-31 | 2021-02-09 | 株式会社日立产机系统 | Rotary positive displacement compressor |
| US11401934B2 (en) | 2017-01-31 | 2022-08-02 | Hitachi Industrial Equipment Systems Co., Ltd. | Rotary displacement compressor having a check valve and a backflow control valve arranged in series through a discharge pipe |
| CN107171601A (en) * | 2017-06-22 | 2017-09-15 | 沈阳工业大学 | Six-phase motor break phase when torque-ripple minimization fault tolerant control method |
| CN108768218A (en) * | 2018-06-25 | 2018-11-06 | 上海电机学院 | A kind of device and method improving asynchronous starting and permanent magnet electric motor starting ability |
| CN108768218B (en) * | 2018-06-25 | 2020-08-28 | 上海电机学院 | Device and method for improving starting capability of asynchronous starting permanent magnet motor |
| CN110247588A (en) * | 2019-05-31 | 2019-09-17 | 惠州市蓝微电子有限公司 | A kind of mono pulse control method and system of hall electric machine |
| CN110247588B (en) * | 2019-05-31 | 2022-02-22 | 惠州市蓝微电子有限公司 | Single-pulse control method and system of Hall motor |
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Open date: 20100512 |