CN107040179A - A kind of guard method out of control of weak magnetic based on motor compressor - Google Patents
A kind of guard method out of control of weak magnetic based on motor compressor Download PDFInfo
- Publication number
- CN107040179A CN107040179A CN201710219664.0A CN201710219664A CN107040179A CN 107040179 A CN107040179 A CN 107040179A CN 201710219664 A CN201710219664 A CN 201710219664A CN 107040179 A CN107040179 A CN 107040179A
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- Prior art keywords
- phase
- weak magnetic
- control
- guard method
- redundancy protecting
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a kind of guard method out of control of weak magnetic based on motor compressor; after the protection can avoid controller using weak magnetic control; the voltage saturation problem because of caused by the load increase of compressor; simultaneously the work that larger voltage margin can be stablized is provided for controller; so as to realize while weak magnetic speed-up, it can effectively prevent the control caused by weak magnetic controls the voltage saturation brought from failing.
Description
Technical field
The present invention relates to a kind of guard method out of control of weak magnetic based on motor compressor, belong to technical field of motors.
Background technology
With becoming increasingly conspicuous for the energy and environmental issue, energy-conserving and emission-cutting technology is increasingly weighed for the development of automotive engineering
Will, traditional automobile power platform changed to electric platforms be historical development inexorable trend.For electric automobile, motor and its
Drive system is its core component, and electric machines control technology is then the key technology in this technological innovation.
New compressor exploitation is called in the development of new-energy automobile, only develops new electrically-driven compressors ability
Meet the supporting needs of vehicle factory and the comfort level needs of user.The motor used inside current motor compressor has started to popularization forever
Magneto.The features such as magneto has high reliability, High Power Factor, high efficiency and high power density, in motor compressor
, it is necessary to which motor compressor controller can control the magneto inside compressor to have wide speed range speed governing energy in
Power, the big torque output capability under the existing slow-speed of revolution of motor can possess certain power output capacity again at high speeds.It is existing
There is voltage saturation and because voltage saturation causes the problem of control is failed after using weak magnetic control in magneto.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of protection side out of control based on the weak magnetic of motor compressor
Method.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of guard method out of control of weak magnetic based on motor compressor, comprises the following steps,
Step 1, according to d axle command voltages VdCmdWith q axle command voltages VqCmdCalculate phase voltage vector V to be modulateds；
Step 2, by VsWith the phase voltage V of dc busPhaseCompare, if VsSaturation state is reached, then carries out weak magnetic guarantor out of control
Shield；Wherein, VPhase=Vdc/ 1.732, VdcFor the line voltage of dc bus；
The process of the weak magnetic lost-control protection is：
To VsRedundancy protecting is carried out, the phase voltage vector V to be modulated after redundancy protecting is obtaineds′；To VPhaseCarry out redundancy guarantor
Shield, obtains the phase voltage V of the dc bus after redundancy protectingPhase′；
Calculate Vs' and VPhase' difference VolErr；
If VolErr is located in the range of 0 volt~N volts, motor reduction coefficient is determined according to VolErr, according to reduction of speed coefficient
Reduction of speed is carried out to motor；N is default threshold value.
In step 2, work as Vs<VPhaseWhen, VsNot up to saturation state, works as Vs≥VPhaseWhen, then VsReach saturation state.
To VsThe redundancy protecting threshold value of redundancy protecting is carried out, according to the stability of current closed-loop system operation and modulation electricity
The fluctuation size of pressure is determined.
To VPhaseThe redundancy protecting threshold value of redundancy protecting is carried out, according to the stability of current closed-loop system operation and modulation electricity
The fluctuation size of pressure is determined.
Motor reduction coefficient is located in the range of 0%~100%, is built according to VolErr scope and motor reduction coefficient range
Vertical table, the occurrence of motor reduction coefficient is obtained according to table-look-up type linear interpolation method.
The beneficial effect that the present invention is reached：The invention provides a kind of protection out of control of weak magnetic based on motor compressor
Method, after the protection can avoid controller using weak magnetic control, the voltage saturation because of caused by the load increase of compressor is asked
Topic, while the work that larger voltage margin can be stablized is provided for controller, so as to realize while weak magnetic speed-up, energy
The effective control prevented caused by weak magnetic controls the voltage saturation brought is failed.
Brief description of the drawings
Fig. 1 is flow chart of the invention.
Fig. 2 is the flow chart of weak magnetic lost-control protection.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of guard method out of control of weak magnetic based on motor compressor, comprises the following steps：
Step 1, according to d axle command voltages VdCmdWith q axle command voltages VqCmdCalculate phase voltage vector V to be modulateds,
Step 2, by VsWith the phase voltage V of dc busPhaseCompare, work as Vs<VPhaseWhen, VsNot up to saturation state, still there is lifting
Surplus, works as Vs≥VPhaseWhen, then VsSaturation state is reached, weak magnetic lost-control protection is carried out；Wherein, VPhase=Vdc/ 1.732, VdcFor direct current
The line voltage of bus.
As shown in Fig. 2 the process of weak magnetic lost-control protection is：
S21, to VsRedundancy protecting is carried out, the phase voltage vector V to be modulated after redundancy protecting is obtaineds′；To VsCarry out superfluous
The redundancy protecting threshold value of remaining protection, is determined according to the stability of current closed-loop system operation and the fluctuation size of modulation voltage,
Such as：By VsReducing TBD can calibration value (10V, 20V, 30V etc.)；
To VPhaseRedundancy protecting is carried out, the phase voltage V of the dc bus after redundancy protecting is obtainedPhase′；To VPhaseCarry out redundancy protecting
Redundancy protecting threshold value, determined according to the stability of current closed-loop system operation and the fluctuation size of modulation voltage, such as：By VPhase
It is multiplied by the coefficient between 0.99-0.9.
S22, calculates Vs' and VPhase' difference VolErr；
S23, if VolErr is located in the range of 0 volt~N volts, determines motor reduction coefficient, according to reduction of speed according to VolErr
Coefficient carries out reduction of speed to motor, real output speed is less than given rotating speed；N is default threshold value.
Detailed process is：Motor reduction coefficient is located in the range of 0%~100%, is dropped according to VolErr scope and motor
Fast coefficient range sets up table, and the occurrence of motor reduction coefficient is obtained according to table-look-up type linear interpolation method.Such as：VolErr is located at 0
In the range of~20 volts of volt, VolErr is equal to 0, then motor reduction coefficient is that 0%, VolErr is equal to 20, then motor reduction coefficient is
100%.
After above-mentioned guard method can avoid controller using weak magnetic control, the electricity because of caused by the load increase of compressor
Saturation problem is pressed, while the work that larger voltage margin can be stablized is provided for controller, so as to realize in weak magnetic speed-up
While, it can effectively prevent the control caused by weak magnetic controls the voltage saturation brought from failing.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of guard method out of control of weak magnetic based on motor compressor, it is characterised in that：Comprise the following steps,
Step 1, according to d axle command voltages VdCmdWith q axle command voltages VqCmdCalculate phase voltage vector V to be modulateds；
Step 2, by VsWith the phase voltage V of dc busPhaseCompare, if VsSaturation state is reached, then carries out weak magnetic lost-control protection；Its
In, VPhase=Vdc/ 1.732, VdcFor the line voltage of dc bus；
The process of the weak magnetic lost-control protection is：
To VsRedundancy protecting is carried out, the phase voltage vector V to be modulated after redundancy protecting is obtaineds′；To VPhaseRedundancy protecting is carried out, is obtained
The phase voltage V of dc bus after to redundancy protectingPhase′；
Calculate Vs' and VPhase' difference VolErr；
If VolErr is located in the range of 0 volt~N volts, motor reduction coefficient is determined according to VolErr, according to reduction of speed coefficient to electricity
Machine carries out reduction of speed；N is default threshold value.
2. a kind of weak magnetic based on motor compressor according to claim 1 guard method out of control, it is characterised in that：
3. a kind of weak magnetic based on motor compressor according to claim 1 guard method out of control, it is characterised in that：Step
In rapid 2, work as Vs<VPhaseWhen, VsNot up to saturation state, works as Vs≥VPhaseWhen, then VsReach saturation state.
4. a kind of weak magnetic based on motor compressor according to claim 1 guard method out of control, it is characterised in that：It is right
VsThe redundancy protecting threshold value of redundancy protecting is carried out, it is big according to the fluctuation of the stability of current closed-loop system operation and modulation voltage
It is small to determine.
5. a kind of weak magnetic based on motor compressor according to claim 1 guard method out of control, it is characterised in that：It is right
VPhaseThe redundancy protecting threshold value of redundancy protecting is carried out, it is big according to the fluctuation of the stability of current closed-loop system operation and modulation voltage
It is small to determine.
6. a kind of weak magnetic based on motor compressor according to claim 1 guard method out of control, it is characterised in that：Electricity
Machine reduction of speed coefficient is located in the range of 0%~100%, and table is set up according to VolErr scope and motor reduction coefficient range, according to
Table-look-up type linear interpolation method obtains the occurrence of motor reduction coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219664.0A CN107040179A (en) | 2017-04-06 | 2017-04-06 | A kind of guard method out of control of weak magnetic based on motor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219664.0A CN107040179A (en) | 2017-04-06 | 2017-04-06 | A kind of guard method out of control of weak magnetic based on motor compressor |
Publications (1)
| Publication Number | Publication Date |
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| CN107040179A true CN107040179A (en) | 2017-08-11 |
Family
ID=59533366
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710219664.0A Pending CN107040179A (en) | 2017-04-06 | 2017-04-06 | A kind of guard method out of control of weak magnetic based on motor compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707165A (en) * | 2017-09-30 | 2018-02-16 | 广东美的制冷设备有限公司 | Control method, compressor assembly and the refrigeration plant of compressor |
| CN108400745A (en) * | 2018-03-26 | 2018-08-14 | 杭州先途电子有限公司 | A kind of motor control method and device |
| CN110138285A (en) * | 2019-06-13 | 2019-08-16 | 安徽首智新能源科技有限公司 | A kind of permanent magnet synchronous motor rising film condensation method and system |
| CN112532140A (en) * | 2020-11-03 | 2021-03-19 | 宁波央腾汽车电子有限公司 | Motor field weakening out-of-control protection method |
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| CN102386836A (en) * | 2010-08-27 | 2012-03-21 | 永济新时速电机电器有限责任公司 | Transmission control method and device of permanent magnet synchronous motor |
| CN102386816A (en) * | 2010-08-27 | 2012-03-21 | 永济新时速电机电器有限责任公司 | Method and device for controlling weak magnetism of permanent magnet synchronous motor |
| CN102882457A (en) * | 2012-10-10 | 2013-01-16 | 深圳市航盛电子股份有限公司 | Traction motor control device and method |
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| CN105515479A (en) * | 2016-01-06 | 2016-04-20 | 南京航空航天大学 | Surface-mounted permanent magnet synchronous generator flux weakening control method |
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| CN102386836A (en) * | 2010-08-27 | 2012-03-21 | 永济新时速电机电器有限责任公司 | Transmission control method and device of permanent magnet synchronous motor |
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| CN105515479A (en) * | 2016-01-06 | 2016-04-20 | 南京航空航天大学 | Surface-mounted permanent magnet synchronous generator flux weakening control method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707165A (en) * | 2017-09-30 | 2018-02-16 | 广东美的制冷设备有限公司 | Control method, compressor assembly and the refrigeration plant of compressor |
| CN108400745A (en) * | 2018-03-26 | 2018-08-14 | 杭州先途电子有限公司 | A kind of motor control method and device |
| CN110138285A (en) * | 2019-06-13 | 2019-08-16 | 安徽首智新能源科技有限公司 | A kind of permanent magnet synchronous motor rising film condensation method and system |
| CN110138285B (en) * | 2019-06-13 | 2022-04-01 | 安徽首智新能源科技有限公司 | Permanent magnet synchronous motor speed-up control method and system |
| CN112532140A (en) * | 2020-11-03 | 2021-03-19 | 宁波央腾汽车电子有限公司 | Motor field weakening out-of-control protection method |
| CN112532140B (en) * | 2020-11-03 | 2022-05-27 | 宁波央腾汽车电子有限公司 | Motor field weakening out-of-control protection method |
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Effective date of abandoning: 20200407 |