CN109936321A - A kind of permanent-magnetic synchronous motor rotor pre-determined bit method - Google Patents
A kind of permanent-magnetic synchronous motor rotor pre-determined bit method Download PDFInfo
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- CN109936321A CN109936321A CN201810410807.0A CN201810410807A CN109936321A CN 109936321 A CN109936321 A CN 109936321A CN 201810410807 A CN201810410807 A CN 201810410807A CN 109936321 A CN109936321 A CN 109936321A
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- synchronous motor
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- permanent magnet
- rotor
- determined bit
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Abstract
The invention discloses a kind of permanent-magnetic synchronous motor rotors to be pre-positioned method, is pre-positioned after permanent magnet synchronous motor is out of service to permanent magnet synchronous motor, after the completion of pre-determined bit process, closes permanent magnet synchronous motor.The purpose of the present invention is to provide a kind of permanent-magnetic synchronous motor rotors to be pre-positioned method, improves the starting speed and starting success rate of motor.
Description
Technical field
The present invention relates to motor fields more particularly to permanent-magnetic synchronous motor rotor to be pre-positioned method.
Background technique
Permanent magnet synchronous motor (PMSM) most common driving method is Field orientable control (Field Oriented at present
It Control) and is position-sensor-free.Working principle is: when motor operates, micro-control unit (MCU) is by constantly examining
The electric current of measured motor calculates the physical location of rotor.Then MCU exports corresponding drive according to the physical location of rotor
Dynamic voltage waveform, enables the rotor of motor ceaselessly to rotate.The problem of this mode, is, when motor stops, due to electricity
The electric current of machine is zero, this when, MCU was the position for not knowing rotor.Therefore when electric motor starting, MCU will first be set
A fixed specific position, then rotor is forced to draw to specified position by output voltage waveforms.Such as publication number
" a kind of starting method and device of permanent magnet synchronous motor " disclosed in CN105978419A, by determining the default of pole rotor
Differential seat angle is gradually reduced to zero by the load current that the differential seat angle of angle and actual angle and initial current are determined, is then started
Permanent magnet synchronous motor.
Since the position of rotor is uncertain, so pre-determined bit needs the time, if reached not yet in rotor predetermined
Position just carry out open loop operating if, rotor finally start failure probability increase, so pre-determined bit time must be enough
It is long.For some products, if short to starting time requirement, that must just shorten the pre-determined bit time, starting failure in this way
Probability will increase considerably.Therefore, it is necessary to balance the contradiction between pre-determined bit time and quick start, it is common practice to
Increase position sensor, but will increase cost and failure rate in this way.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of permanent-magnetic synchronous motor rotor pre-determined bits
Method improves the starting speed and starting success rate of motor.
The purpose of the present invention adopts the following technical scheme that realization:
The present invention provides a kind of permanent-magnetic synchronous motor rotor pre-determined bit method, right after the permanent magnet synchronous motor is out of service
The permanent magnet synchronous motor is pre-positioned, by the rotor fixed position of the permanent magnet synchronous motor to predetermined position, when described pre-
After the completion of position fixing process, the permanent magnet synchronous motor is closed.
Further, the pre-determined bit process includes: step S1: the micro-control unit close voltage output make it is described forever
Magnetic-synchro motor stops, and the micro-control unit sets the predetermined position of the rotor；Step S2: the micro-control unit
Outputting drive voltage waveform draws the rotor to the predetermined position, and closes the driving voltage.
Further, in the step S1, it is carried out after the permanent magnet synchronous motor stopping 50ms~2000ms described pre-
Position fixing process.
Further, the time of the pre-determined bit process is 50ms~2000ms.
Further, the time of the pre-determined bit process is 50ms~2000ms.
Compared with prior art, the beneficial effects of the present invention are:
When stopping the pre-determined bit movement of permanent-magnetic synchronous motor rotor from changing when starting motor in the present invention, exist in this way
When next permanent magnet synchronous motor starts, rotor has been positioned at predetermined position, so that the starting speed of permanent magnet synchronous motor is improved,
And then guarantee the starting success rate of permanent magnet synchronous motor.
Detailed description of the invention
Fig. 1 is the phase current waveform figure of permanent magnet synchronous motor；
Fig. 2 is the phase current waveform figure of permanent magnet synchronous motor；
In figure: A, stopping；B, it is pre-positioned process；C, start-up course；D, operational process.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
The present invention provides a kind of permanent-magnetic synchronous motor rotor pre-determined bit method, and with reference to Fig. 1 and Fig. 2, permanent magnet synchronous motor stops
Pre-determined bit process B is carried out to permanent magnet synchronous motor after only running A, by the rotor fixed position of permanent magnet synchronous motor to predetermined position,
After the completion of being pre-positioned process B, permanent magnet synchronous motor is closed.Namely permanent magnet synchronous motor end of run when progress to rotor
Pre-determined bit process after the completion of pre-determined bit process, closes permanent magnet synchronous motor.
By the pre-determined bit process B of permanent-magnetic synchronous motor rotor from starting when change to motor stop A when, in this way next time forever
When magnetic-synchro electric motor starting, rotor has been positioned at predetermined position, to improve the starting speed of permanent magnet synchronous motor, Jin Erbao
Demonstrate,prove the starting success rate of permanent magnet synchronous motor.That is, carrying out pre-determined bit process B to rotor when motor stops A, it is pre-positioned
After the completion of process, motor is closed.When needing to be again started up motor, motor can be placed directly within to start-up course C, then carried out
Operational process D.
According to an embodiment of the invention, pre-determined bit process following steps: step S1: micro-control unit, which closes voltage output, to be made
Permanent magnet synchronous motor stops, and the predetermined position of micro-control unit setting rotor；Step S2: micro-control unit output driving electricity
Corrugating draws rotor to predetermined position, and closes the driving voltage.Further, in step sl, permanent magnet synchronous motor
Pre-determined bit process is carried out after stopping 50ms~2000ms.Further, the time for being pre-positioned process is 50ms~2000ms.It should
Understand, the time for being pre-positioned process can also make other right times drawn rotor according to driving voltage waveform to position.
It is then slightly delayed that is, micro-control unit closes voltage output so that permanent magnet synchronous motor stops completely
After (such as 50ms~2000ms)；Micro-control unit sets the position (i.e. angle) of a fixed rotor, regardless of the reality of rotor
Border position is in any angle, then exports corresponding driving voltage waveform and draws rotor to predetermined position, and closes the drive
Dynamic voltage.Wherein, the predetermined angle of rotor can be any angle from -180 degree to+180 degree.
It should be understood that the case where powering on for the first time for micro-control unit, needs after the power-up immediately to carry out rotor
Pre-determined bit, when motor needs to run again, so that it may directly initiate motor and run, make rotor since the angle of pre-determined bit
Rotation.After motor stops, micro-control unit (MCU) will be delayed after a period of time and carry out pre-determined bit operation.Predetermined bit manipulation is just
Micro-control unit (MCU) by output voltage waveforms, by the rotor of motor draw by force to fixed angle (- 180 °~
180 °), all voltage outputs are then shut off, it is directly (pre- from the predetermined angular of rotor when motor needs to run again
Positioning is set) start and runs.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (5)
1. a kind of permanent-magnetic synchronous motor rotor is pre-positioned method, which is characterized in that right after the permanent magnet synchronous motor is out of service
The permanent magnet synchronous motor is pre-positioned, by the rotor fixed position of the permanent magnet synchronous motor to predetermined position, when described pre-
After the completion of position fixing process, the permanent magnet synchronous motor is closed.
2. permanent-magnetic synchronous motor rotor according to claim 1 is pre-positioned method, which is characterized in that the pre-determined bit process
Include:
Step S1: the micro-control unit, which closes voltage output, stops the permanent magnet synchronous motor, and the microcontroller list
Member sets the predetermined position of the rotor；
Step S2: the micro-control unit outputting drive voltage waveform draws the rotor to the predetermined position, and closes institute
State driving voltage.
3. permanent-magnetic synchronous motor rotor according to claim 1 or 2 is pre-positioned method, which is characterized in that the permanent magnetism is same
Step motor carries out the pre-determined bit process after stopping 50ms~2000ms.
4. permanent-magnetic synchronous motor rotor according to claim 1 or 2 is pre-positioned method, which is characterized in that the pre-determined bit
The time of process is 50ms~2000ms.
5. permanent-magnetic synchronous motor rotor according to claim 3 is pre-positioned method, which is characterized in that the pre-determined bit process
Time be 50ms~2000ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410807.0A CN109936321A (en) | 2018-05-02 | 2018-05-02 | A kind of permanent-magnetic synchronous motor rotor pre-determined bit method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410807.0A CN109936321A (en) | 2018-05-02 | 2018-05-02 | A kind of permanent-magnetic synchronous motor rotor pre-determined bit method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109936321A true CN109936321A (en) | 2019-06-25 |
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ID=66984290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810410807.0A Pending CN109936321A (en) | 2018-05-02 | 2018-05-02 | A kind of permanent-magnetic synchronous motor rotor pre-determined bit method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398381A (en) * | 2019-08-16 | 2021-02-23 | 联合汽车电子有限公司 | Stopping method and control method of brushless direct current motor, motor controller and electric device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060241851A1 (en) * | 2005-04-22 | 2006-10-26 | Al Berger | HEV internal combustion engine pre-positioning |
| CN103560736A (en) * | 2013-10-28 | 2014-02-05 | 华南理工大学 | Static off-line parameter identification method of permanent magnet synchronous motor |
| CN103684142A (en) * | 2012-09-20 | 2014-03-26 | 株式会社电装 | Control system used for brushless electric machine |
| CN105515469A (en) * | 2015-12-25 | 2016-04-20 | 广东美的环境电器制造有限公司 | Brushless DC motor, control method and control device thereof |
| CN106575934A (en) * | 2014-08-26 | 2017-04-19 | Bsh家用电器有限公司 | Method for stopping a compressor and compressor of a refrigeration device |
-
2018
- 2018-05-02 CN CN201810410807.0A patent/CN109936321A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060241851A1 (en) * | 2005-04-22 | 2006-10-26 | Al Berger | HEV internal combustion engine pre-positioning |
| CN103684142A (en) * | 2012-09-20 | 2014-03-26 | 株式会社电装 | Control system used for brushless electric machine |
| CN103560736A (en) * | 2013-10-28 | 2014-02-05 | 华南理工大学 | Static off-line parameter identification method of permanent magnet synchronous motor |
| CN106575934A (en) * | 2014-08-26 | 2017-04-19 | Bsh家用电器有限公司 | Method for stopping a compressor and compressor of a refrigeration device |
| CN105515469A (en) * | 2015-12-25 | 2016-04-20 | 广东美的环境电器制造有限公司 | Brushless DC motor, control method and control device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398381A (en) * | 2019-08-16 | 2021-02-23 | 联合汽车电子有限公司 | Stopping method and control method of brushless direct current motor, motor controller and electric device |
| CN112398381B (en) * | 2019-08-16 | 2022-07-19 | 联合汽车电子有限公司 | Stopping method and control method of brushless direct current motor, motor controller and electric device |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190625 |
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| RJ01 | Rejection of invention patent application after publication |