CN105429519B - A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage - Google Patents
A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage Download PDFInfo
- Publication number
- CN105429519B CN105429519B CN201510870589.5A CN201510870589A CN105429519B CN 105429519 B CN105429519 B CN 105429519B CN 201510870589 A CN201510870589 A CN 201510870589A CN 105429519 B CN105429519 B CN 105429519B
- Authority
- CN
- China
- Prior art keywords
- phase
- synchronous motor
- permanent
- permanent magnet
- magnet synchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage, described device is made of direct voltage source, three-phase full-bridge inverter, high resistance measurement and permanent magnet synchronous motor, wherein direct voltage source is powered to three-phase full-bridge inverter, three-phase full-bridge inverter connects permanent magnet synchronous motor, the neutral point of direct voltage source neutral earthing, permanent magnet synchronous motor is grounded by high resistance measurement.The method is：Detection obtains the voltage at high resistance measurement both ends as permanent magnet synchronous motor neutral point voltage；It determines permanent magnet synchronous electric set end voltage, subtracts neutral point voltage with terminal voltage, obtain phase voltage；The three-phase phase current detected using phase voltage and by current sensor, is calculated three-phase opposite potential；Three-phase opposite potential is integrated to obtain three-phase permanent magnetic linkage, the three-phase permanent flux linkage vector is synthesized, permanent-magnetism synchronous motor permanent magnetic magnetic linkage is obtained.The present invention solves the problems, such as that motor permanent magnet flux linkage accurately detects in real time in permanent magnet synchronous motor closed-loop control.
Description
Technical field
The present invention relates to a kind of permanent magnet synchronous motor more particularly to a kind of detection devices of permanent-magnetism synchronous motor permanent magnetic magnetic linkage
And detection method, belong to permanent magnet synchronous motor control field.
Background technology
Permanent magnet synchronous motor has many advantages, such as simple in structure, power density is high, control is simple.In recent years, permanent magnetism is same
Step motor has obtained increasingly extensive application in the industrial circles such as high-performance governing system and servo-control system.
High-performance permanent magnet synchronous motor control system needs accurate permanent magnet flux linkage information.But permanent magnet flux linkage fluctuates and loss of excitation
It can cause the motor feels hot to be deteriorated with torque performance, motor is possible out of control under serious conditions and scraps.Currently, well known existing skill
Art is to optimize magnetic structure from design of electrical motor angle, reduces loss of excitation risk, such method belongs to static prevention scheme.And
It to the loss of excitation in motor operation, often to arrive and just shut down detection after causing obvious fault, can only be known as offline after a kind of loss of excitation
Analysis method, the loss of excitation degree that can cause failure are often very serious.
Therefore, the permanent magnet flux linkage detection result of the prior art is difficult to meet the requirement of permanent magnet synchronous motor high performance control.Such as
What accurately detects permanent-magnetism synchronous motor permanent magnetic magnetic linkage in real time, and being the prior art has problem to be solved.
Invention content
Technical problem：The purpose of the present invention is to solve motor permanent magnet flux linkages in permanent magnet synchronous motor closed-loop control to be difficult to
In real time the problem of accurate detection, and propose a kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage.
Technical solution：In order to achieve the above objectives, the technical solution adopted by the present invention is：
A kind of detection device of permanent-magnetism synchronous motor permanent magnetic magnetic linkage, the permanent magnet flux linkage for detecting permanent magnet synchronous motor；Its
It is characterized in that：Including direct voltage source, three-phase full-bridge inverter and high resistance measurement, wherein the direct voltage source is three-phase
Full-bridge inverter provides power supply, and the neutral earthing of direct voltage source；The three-phase full-bridge inverter connects permanent magnet synchronous motor,
And the neutral point of permanent magnet synchronous motor is grounded via high resistance measurement.
Three-phase full-bridge inverter described above is formed by three branch circuit parallel connections, and each branch includes two be serially connected
Metal-oxide-semiconductor, and each metal-oxide-semiconductor is respectively connected with anti-paralleled diode, three branches of the three-phase full-bridge inverter are separately connected permanent magnetism
A, B, C three-phase of synchronous motor.
High resistance measurement described above refers to the resistance device that resistance value is more than 100M Ω.
In order to achieve the above objectives, another technical solution that the present invention uses is：
A kind of detection method of the detection device of permanent-magnetism synchronous motor permanent magnetic magnetic linkage, it is characterised in that include the following steps：
(1) voltage at detection high resistance measurement both ends, as permanent magnet synchronous motor neutral point voltage；
(2) according to the on off operating mode of three-phase full-bridge inverter turn on process and afterflow process power tube and fly-wheel diode,
It determines permanent magnet synchronous motor three-phase terminal voltage, neutral point voltage is subtracted with the terminal voltage, obtain permanent magnet synchronous motor three-phase phase
Voltage；
(3) detection permanent magnet synchronous motor A, B, C three-phase phase current is balanced in conjunction with aforementioned three-phase phase voltage according to phase voltage
Equation calculation three-phase opposite potential；
(4) permanent-magnetism synchronous motor permanent magnetic magnetic linkage is calculated.
In step (2) described above, the determination method of permanent magnet synchronous motor three-phase terminal voltage is：First determine whether three phase full bridge
Inverter is operated in turn on process or afterflow process, when being operated in turn on process, the state that three-phase terminal voltage passes through power tube
It determines：If the upper bridge arm power tube of certain phase is open-minded, which is the 1/2 of direct voltage source amplitude, polarity be just,
If the lower bridge arm power tube of certain phase is open-minded, which is the 1/2 of direct voltage source amplitude, polarity is negative；Work as work
Make in afterflow process, three-phase terminal voltage is determined by the state of fly-wheel diode：If the upper bridge arm fly-wheel diode of certain phase is open-minded,
Then the phase terminal voltage numerical value be the 1/2 of direct voltage source amplitude, polarity be just, if the lower bridge arm fly-wheel diode of certain phase is open-minded,
Then the phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is negative.
Judgement three-phase full-bridge inverter described above, which is operated in turn on process or the method for afterflow process, is：Detect three-phase
Whether full-bridge inverter power tube is all off, when three-phase full-bridge inverter power tube is not all of shutdown, then shows three-phase
Full-bridge inverter is on process；When three-phase full-bridge inverter power tube is all off, then show at three-phase full-bridge inverter
In afterflow process.
The method of calculating three-phase opposite potential is in step (3) described above：Permanent-magnet synchronous is detected using current sensor
Motor three-phase phase current ia、ib、ic, in conjunction with the three-phase phase voltage u in step (2)a、ub、uc, permanent magnet synchronous motor according to the following formula
Permanent magnet synchronous motor three-phase opposite potential e is calculated in phase voltage equilibrium equationa、eb、ec：
Wherein, Ra、Rb、RcRespectively permanent magnet synchronous motor three-phase phase resistance, La、Lb、LcRespectively permanent magnet synchronous motor three
Phase phase inductance.
The method that step (4) described above calculates permanent-magnetism synchronous motor permanent magnetic magnetic linkage is, to the permanent magnet synchronous motor A,
B, C three-phases opposite potential integrates to obtain three-phase permanent magnetic linkage：
It is converted by CLARK, the three-phase permanent flux linkage vector is synthesized, permanent-magnetism synchronous motor permanent magnetic magnetic linkage is obtained：
Advantageous effect：The advantages of the present invention are mainly：
1, of the invention for detecting permanent-magnetism synchronous motor permanent magnetic magnetic linkage device, simple in structure, accuracy of detection is high, real-time
It is good.2, the detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage of the invention, the required parameter of electric machine is few, and calculation amount is small, solves
Motor permanent magnet flux linkage is difficult to the problem of accurate detection in real time in permanent magnet synchronous motor closed-loop control.
Description of the drawings
Fig. 1 is the structure of the detecting device block diagram of permanent-magnetism synchronous motor permanent magnetic magnetic linkage.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention,
It is not intended to limit the present invention.
As shown in Figure 1, a kind of detection device of permanent-magnetism synchronous motor permanent magnetic magnetic linkage of the present invention, including direct voltage source,
Three-phase full-bridge inverter and high resistance measurement, the opposite potential for detecting permanent magnet synchronous motor, wherein direct voltage source connects
Three-phase full-bridge inverter provides power supply, and the neutral earthing of the direct voltage source for three-phase full-bridge inverter；The three-phase is complete
Bridge inverter is formed by three branch circuit parallel connections, and each branch includes two metal-oxide-semiconductors being serially connected, and each metal-oxide-semiconductor is all connected with
There are anti-paralleled diode, three branches of the three-phase full-bridge inverter to be separately connected A, B, C three-phase of permanent magnet synchronous motor, and
The neutral point of permanent magnet synchronous motor is grounded via high resistance measurement, wherein the high resistance measurement refers to that resistance value is more than 100M
The resistance device of Ω.
Based on above-described detection device, a kind of inspection of the detection device of permanent-magnetism synchronous motor permanent magnetic magnetic linkage of the invention
Survey method, includes the following steps：
Step 1：Determine permanent magnet synchronous motor neutral point voltage
By direct voltage source neutral earthing, permanent magnet synchronous motor neutral point is grounded by high resistance measurement, detection obtains
The voltage at high resistance measurement both ends, using the voltage at the high resistance measurement both ends as permanent magnet synchronous motor neutral point voltage；
Step 2：Determine permanent magnet synchronous motor A, B, C three-phase terminal voltage and phase voltage
The determination of permanent magnet synchronous electric set end voltage can be divided to three-phase full-bridge inverter turn on process and afterflow process two kinds of situations
Consider respectively, whether all three-phase full-bridge inverter turn on process and afterflow process by detecting three-phase full-bridge inverter power tube
It turns off to judge：When three-phase full-bridge inverter power tube is not all of shutdown, then show that three-phase full-bridge inverter was on
Journey；When three-phase full-bridge inverter power tube is all off, then show that three-phase full-bridge inverter is in afterflow process；
Three-phase full-bridge inverter turn on process, permanent magnet synchronous motor A, B, C three-phase terminal voltage are true by the state of power tube
It is fixed：If the upper bridge arm power tube of certain phase is open-minded, which is the 1/2 of direct voltage source amplitude, polarity be just, if
The lower bridge arm power tube of certain phase is open-minded, then the phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is negative；
Three-phase full-bridge inverter afterflow process, the shape that permanent magnet synchronous motor A, B, C three-phase terminal voltage passes through fly-wheel diode
State determines：Since afterflow process three-phase full-bridge inverter power tube is all off, permanent magnet synchronous motor A, B, C are each mutually by respective
The fly-wheel diode afterflow uniquely opened on the three-phase full-bridge inverter bridge arm connected, if the upper bridge arm fly-wheel diode of certain phase
Open-minded, then the phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is just, if the lower bridge arm fly-wheel diode of certain phase
Open-minded, then the phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is negative；
Above-mentioned permanent magnet synchronous electric set end voltage is subtracted into above-mentioned permanent magnet synchronous motor neutral point voltage, obtains permanent magnet synchronous electric
Machine phase voltage.
Step 3：Calculate permanent magnet synchronous motor A, B, C three-phase opposite potential
Using above-mentioned permanent magnet synchronous motor A, B, C three-phase phase voltage ua、ub、ucAnd it detects to obtain by current sensor
A, B, C three-phase phase current ia、ib、ic, according to permanent magnet synchronous motor phase voltage equilibrium equation, it is opposite that A, B, C three-phase is calculated
Potential：
Ra、Rb、RcThe respectively phase resistance of permanent magnet synchronous motor A, B, C three-phases, La、Lb、LcRespectively permanent magnet synchronous motor
A, the phase inductance of B, C three-phase.
Step 4：Calculate permanent-magnetism synchronous motor permanent magnetic magnetic linkage
Above-mentioned permanent magnet synchronous motor A, B, C three-phase opposite potential is integrated to obtain three-phase permanent magnetic linkage：
It is converted by CLARK, the three-phase permanent flux linkage vector is synthesized, permanent-magnetism synchronous motor permanent magnetic magnetic linkage is obtained：
It these are only embodiments of the present invention, the description thereof is more specific and detailed, but can not therefore be interpreted as pair
The limitation of the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention
Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (1)
1. a kind of detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage, the detection of the permanent magnet flux linkage for detecting permanent magnet synchronous motor
Device includes direct voltage source, three-phase full-bridge inverter and high resistance measurement, wherein the direct voltage source is that three phase full bridge is inverse
Become device and power supply, and the neutral earthing of direct voltage source are provided；The three-phase full-bridge inverter connection permanent magnet synchronous motor, and permanent magnetism
High resistance measurement of the neutral point of synchronous motor via resistance value more than 100M Ω is grounded；
Wherein, the three-phase full-bridge inverter is formed by three branch circuit parallel connections, and each branch includes two MOS being serially connected
Pipe, and each metal-oxide-semiconductor is respectively connected with anti-paralleled diode, three branches of the three-phase full-bridge inverter are separately connected permanent-magnet synchronous
A, B, C three-phase of motor；
It is characterized in that, the detection method includes the following steps：
(1) voltage at detection high resistance measurement both ends, as permanent magnet synchronous motor neutral point voltage；
(2) it according to the on off operating mode of three-phase full-bridge inverter turn on process and afterflow process power tube and fly-wheel diode, determines
Permanent magnet synchronous motor three-phase terminal voltage subtracts neutral point voltage with the terminal voltage, obtains permanent magnet synchronous motor three-phase phase voltage；
(3) permanent magnet synchronous motor A, B, C three-phase phase current is detected, in conjunction with aforementioned three-phase phase voltage, according to phase voltage equilibrium equation
Calculate three-phase opposite potential；
(4) permanent-magnetism synchronous motor permanent magnetic magnetic linkage is calculated；
Wherein, in the step (2), the determination method of permanent magnet synchronous motor three-phase terminal voltage is：First determine whether that three phase full bridge is inverse
Become device and be operated in turn on process or afterflow process, when being operated in turn on process, three-phase terminal voltage is true by the state of power tube
It is fixed：If the upper bridge arm power tube of certain phase is open-minded, which is the 1/2 of direct voltage source amplitude, polarity be just, if
The lower bridge arm power tube of certain phase is open-minded, then the phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is negative；Work as work
In afterflow process, three-phase terminal voltage is determined by the state of fly-wheel diode：If the upper bridge arm fly-wheel diode of certain phase is open-minded,
The phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity be just, if the lower bridge arm fly-wheel diode of certain phase is open-minded,
The phase terminal voltage numerical value is the 1/2 of direct voltage source amplitude, polarity is negative；
The judgement three-phase full-bridge inverter, which is operated in turn on process or the method for afterflow process, is：Detect three phase full bridge inversion
Whether device power tube is all off, when three-phase full-bridge inverter power tube is not all of shutdown, then shows three phase full bridge inversion
Device is on process；When three-phase full-bridge inverter power tube is all off, then show that three-phase full-bridge inverter is in afterflow
Journey；
The method of calculating three-phase opposite potential is in the step (3)：Permanent magnet synchronous motor three-phase is detected using current sensor
Phase current ia、ib、ic, in conjunction with the three-phase phase voltage u in step (2)a、ub、uc, permanent magnet synchronous motor phase voltage is flat according to the following formula
Weigh equation, and permanent magnet synchronous motor three-phase opposite potential e is calculateda、eb、ec：
Wherein, Ra、Rb、RcRespectively permanent magnet synchronous motor three-phase phase resistance, La、Lb、LcRespectively permanent magnet synchronous motor three-phase phase
Inductance；
The method that the step (4) calculates permanent-magnetism synchronous motor permanent magnetic magnetic linkage is, to permanent magnet synchronous motor A, B, C three-phase phase
Back-emf integrates to obtain three-phase permanent magnetic linkage：
It is converted by CLARK, the three-phase permanent flux linkage vector is synthesized, permanent-magnetism synchronous motor permanent magnetic magnetic linkage is obtained：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870589.5A CN105429519B (en) | 2015-12-02 | 2015-12-02 | A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870589.5A CN105429519B (en) | 2015-12-02 | 2015-12-02 | A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105429519A CN105429519A (en) | 2016-03-23 |
| CN105429519B true CN105429519B (en) | 2018-10-19 |
Family
ID=55507503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510870589.5A Active CN105429519B (en) | 2015-12-02 | 2015-12-02 | A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429519B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915141B (en) * | 2016-05-09 | 2018-09-21 | 中国第一汽车股份有限公司 | Permanent-magnetism synchronous motor permanent magnetic body magnetic linkage on-line measurement system and measurement method |
| CN108233783B (en) * | 2018-01-19 | 2021-08-13 | 长安大学 | Double-motor three-bridge-arm inverter and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702607A (en) * | 2009-11-20 | 2010-05-05 | 江苏科技大学 | Stator flux linkage set method of brushless DC motor direct torque control |
| CN103516267A (en) * | 2012-06-27 | 2014-01-15 | 珠海格力电器股份有限公司 | Starting method and system for air conditioner permanent magnetic synchronization fan motor |
| CN103647492A (en) * | 2013-06-19 | 2014-03-19 | 江苏科技大学 | Brushless direct-current motor stator flux linkage identification method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174484A (en) * | 1996-12-10 | 1998-06-26 | Zexel Corp | Dc brushless motor driver |
-
2015
- 2015-12-02 CN CN201510870589.5A patent/CN105429519B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702607A (en) * | 2009-11-20 | 2010-05-05 | 江苏科技大学 | Stator flux linkage set method of brushless DC motor direct torque control |
| CN103516267A (en) * | 2012-06-27 | 2014-01-15 | 珠海格力电器股份有限公司 | Starting method and system for air conditioner permanent magnetic synchronization fan motor |
| CN103647492A (en) * | 2013-06-19 | 2014-03-19 | 江苏科技大学 | Brushless direct-current motor stator flux linkage identification method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105429519A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104360171B (en) | Method for measuring inductance parameter of permanent magnet synchronous motor | |
| CN110112973B (en) | Permanent magnet synchronous motor inductance parameter identification method based on high-frequency rotating voltage injection | |
| CN102721923A (en) | Motor phase loss detection method | |
| CN104579044A (en) | Method for controlling invariable moment of ECM motor | |
| CN103199778A (en) | Rotor position detection method of brushless direct current motor without sensor | |
| CN105406777B (en) | A kind of detection device and detection method of permanent-magnetic synchronous motor stator magnetic linkage | |
| CN105429519B (en) | A kind of detection device and detection method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage | |
| CN104167971B (en) | A kind of electric excitation synchronous motor initial position of rotor detection means and detection method | |
| CN105429542B (en) | A kind of discrimination method of permanent-magnetism synchronous motor permanent magnetic magnetic linkage | |
| CN105471335B (en) | A kind of discrimination method of permanent-magnetic synchronous motor stator magnetic linkage | |
| CN102735381A (en) | Locked-rotor torque detection device and method for three-phase permanent magnet synchronous motor | |
| CN102368674B (en) | Method and system for resolving position of switched reluctance motor rotor | |
| Vu et al. | A current sensor fault diagnosis method based on phase angle shift technique applying to induction motor drive | |
| CN104158459A (en) | Inductance determination method and device for permanent-magnet synchronous motor | |
| CN105406782B (en) | A kind of discrimination method of permanent-magnet synchronous motor rotor position | |
| CN105527498B (en) | The detection method and device of electric car and its high voltage component insulation against ground resistance | |
| CN105406789B (en) | A kind of detection device and detection method of permanent magnet synchronous motor electromagnetic torque | |
| CN104753434B (en) | Motor demagnetization false perception device and method | |
| CN106130428A (en) | A kind of speed detection method of use in washing machine position-sensor-free variable-frequency direct-drive motor | |
| CN105515471B (en) | A kind of detection device and detection method of permanent-magnet synchronous motor rotor position | |
| CN105510825B (en) | A kind of asynchronous machine leakage inductance measuring method for eliminating non-linear factor | |
| CN105391350A (en) | Detection device and method for phase counterelectromotive forces of permanent magnet synchronous motor (PMSM) | |
| CN105406774B (en) | A kind of detection device and detection method of permanent magnet synchronous motor generator rotor angle | |
| CN106788055A (en) | A kind of rotor resistance identification method and system applied in motor control | |
| CN105406776B (en) | A kind of detection device and detection method of permanent magnet synchronous motor rotating speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180827 Address after: 226600 19 Tong Yang Road, Haian Town, Haian, Nantong, Jiangsu Applicant after: Nantong joint source electrical Polytron Technologies Inc Address before: 212003 Mengxi Road, Jingkou District, Zhenjiang, Jiangsu Province, No. 2 Applicant before: Jiangsu University of Science and Technology |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |