CN206602477U - The rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor - Google Patents
The rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor Download PDFInfo
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- CN206602477U CN206602477U CN201621349290.1U CN201621349290U CN206602477U CN 206602477 U CN206602477 U CN 206602477U CN 201621349290 U CN201621349290 U CN 201621349290U CN 206602477 U CN206602477 U CN 206602477U
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Abstract
The utility model discloses a kind of rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor, the system includes control module, drive module, current detection module, angle detection module, inverter and motor, control module is electrically connected with drive module, current detection module and angle detection module respectively, drive module is electrically connected with inverter, inverter is connected with motor by three-phase power line, the output end connection of current detection module input and inverter, angle detection module is electrically connected with motor.The system overcomes the defect of traditional rotary transformer rotor offset detection mode, effectively improves detection efficiency and precision, and the limitation of not examined occasion.
Description
Technical field
The utility model is related to a kind of rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor.
Background technology
IPM synchronous motor control system for electric automobile is frequently with based on rotor field-oriented vector
Control principle, the control principle requires that system detects the rotor-position of permagnetic synchronous motor in real time, so rotor-position detection
The degree of accuracy directly affects the control performance of IPM synchronous motor, IPM synchronous motor used for electric vehicle with precision
It is heavily loaded starting, if the initial position of rotor of detection is inaccurate, causes motor output torque to reduce, may causes to start and lose
Lose, What is more is likely to result in motor reversal, so as to cause vehicle reverse to produce accident.
Motor rotor position detection generally uses position or velocity sensor, and electric automobile compares evil due to working environment
Bad, safe class requires high, and frequently with the high rotary transformer of good reliability, precision as position sensor, but rotation becomes
When depressor is installed on rotor axis of electric, at the beginning of the rotor initial angle of rotary transformer and the rotor of permagnetic synchronous motor
There is offset between beginning angle, thus the angle value controlled motor that directly can not be detected using rotary transformer, it is necessary to
Detect this offset；The technological means of existing detection rotary transformer rotor offset is generally examined using tooling device
Survey or the rotor angle of regulation rotary transformer is allowed to be equal to permanent-magnetic synchronous motor rotor initial angle manually；These means are usual
Less efficient, error is larger, and uniformity is poor, and needs motor rotation to realize detection offset；In some occasions, such as electricity
Machine has been installed, and these means cannot be used, therefore use occasion is subject to certain restrictions.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of rotor of the position sensor of permagnetic synchronous motor
Amount detection systems are offset, the system overcomes the defect of traditional rotary transformer rotor offset detection means, effectively carried
High detection efficiency and precision, and the limitation of not examined occasion.
In order to solve the above technical problems, the rotor displacement amount inspection of the position sensor of permagnetic synchronous motor of the present utility model
Examining system includes control module, drive module, current detection module, angle detection module, inverter and motor, the control mould
Block is electrically connected with the drive module, current detection module and angle detection module respectively, the drive module and the inversion
Device is electrically connected, and the inverter is connected with the motor by three-phase power line, the current detection module input with it is described
The output end connection of inverter, the angle detection module is electrically connected with the motor, and the inverter is used for the motor
A voltage signal is inputted, the current detection module is used to detect three-phase current signal of the motor under the voltage, and
The three-phase current signal is transmitted to the control module, the angle detection module is used for the angle for detecting the rotor
One angle signal of degree, and the angle signal is transmitted to the control module, the control module is used for according to described three
The anglec of rotation that phase current signal, the angle signal and motor are produced under the voltage signal exports a pulse signal extremely
The drive module, the drive module is used to amplify to export a switching signal after the pulse signal to the inverter.
Further, the control module is single-chip microcomputer or digital signal processor.
Further, the angle detection module includes rotary transformer and decoding circuit.
Further, the current detection module includes current transformer and signal conditioning circuit.
Further, the drive module includes optical coupling isolation circuit, drive circuit and power circuit.
Further, the inverter includes six discrete IGBT（Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor）The three phase inverter bridge of transistor or IGBT module composition.
Further, the motor is embedded or durface mounted permanent magnet synchronous motor.
The utility model is by the setting of the electrical connection between each functional module and signal transmission relation, and in rotor
Amount of exercise can be superimposed in original angle under static or motion state, it is to avoid in the prior art can only be in electricity
Machine is static or the error that the limitation of offset can only be detected under motor movement state and is produced in these cases, improves
The accuracy of detection of offset.
Brief description of the drawings
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 shows for the structure of the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor of the present utility model
It is intended to.
Fig. 2 is the control mould of the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor of the present utility model
The sub-structure schematic diagram of block.
Embodiment
Embodiment is as shown in figure 1, the rotor displacement quantity detecting system of the position sensor of the utility model permagnetic synchronous motor
System includes control module 1, drive module 2, current detection module 3, angle detection module 4, inverter 5 and motor 6, the control
Module 1 is electrically connected with the drive module 2, current detection module 3 and angle detection module 4 respectively, the drive module 2 and institute
State inverter 5 to electrically connect, the inverter 5 is connected with the motor 6 by three-phase power line, the current detection module 3 is defeated
Enter end be connected with the output end of the inverter 5, the angle detection module 4 is electrically connected with motor 6, the inverter for
The motor inputs a voltage signal, and the current detection module is used to detect three-phase current of the motor under the voltage
Signal, and the three-phase current signal is transmitted to the control module, the angle detection module is used to detect the motor
One angle signal of the angle of rotor, and the angle signal is transmitted to the control module, the control module is used for root
The anglec of rotation θ produced according to the three-phase current signal, the angle signal and motor under the voltage signalcmdOutput
One pulse signal is to the drive module, and the drive module is used to amplify to export a switching signal after the pulse signal to institute
Inverter is stated, inverter is used to control the motor after the pulse signal is received.
Specifically, current detection module is used to detect that inverter is output to the three-phase current of motor in the system、、,
And current signal is output to control module；Angle detection module detects the angle of rotor, and it is output to control module；
Control module is according to these input signals, and output pwm signal is to drive module after internal processing.Drive module receives control mould
The pwm signal of block output, and the driving inverter work of 6 path switching signals is exported after being amplified.Inverter provides motor work
Required voltage electric current, inverter is used for the controlled motor after pwm signal is received and run.Control module produces fortune in rotor
When dynamic by the angular stack of rotor motion extremelyOn, and export the angle signal after superposition.
As shown in Fig. 2 for control module, the control module 1 is single-chip microcomputer or digital signal processor, it includes rotation
Turn skew amount detection unit 11, the first coordinate transformation unit 12, the second coordinate transformation unit 13, the and of the 3rd coordinate transformation unit 14
Space vector pulse width modulation unit 15, the rotation offset amount detection unit 11, the 3rd coordinate transformation unit 14 and space vector
Pwm unit 15 is sequentially connected electrically, and the output end of the space vector pulse width modulation unit 15 connects the drive module 2
Input, the output end of the current detection module 3 is successively through first coordinate transformation unit 12, the second coordinate transform list
The input of the rotation offset amount detection unit 11 is connected after member 13.
Wherein, the first coordinate transformation unit 12 is used for the three-phase current signal of current detection module 3、、Transform to
In two-phase rest frame, and the current signal under two-phase rest frame is exported to the second coordinate transformation unit 13、；
Second coordinate transformation unit 13 is used for current signal under two-phase rest frame、Transform to synchronous rotary DQ coordinate systems
In, and export Id, Iq signal to rotation offset amount detection unit 11；Rotation offset amount detection unit 11 is used for Id, Iq signal
Voltage vector Ud, the Uq applied in all angles is transformed to, and voltage signal Ud, Uq are sent to the 3rd coordinate transformation unit
14；3rd coordinate transformation unit 14 is static for the signal in synchronous rotary DQ coordinate systems to be transformed into two-phaseIn coordinate system,
And exported to space vector pulse width modulation unit 15、Signal；The basis of space vector pulse width modulation unit 15、Signal
Produce one group of pwm signal and be delivered to drive module 2.
It is preferred that, the angle detection module 4 includes rotary transformer and decoding circuit.
It is preferred that, the current detection module 3 includes current transformer and signal conditioning circuit.
It is preferred that, the drive module 2 includes optical coupling isolation circuit, drive circuit and power circuit.
It is preferred that, the inverter 5 includes the three-phase inversion that six discrete igbt transistors or IGBT module are constituted
Bridge.
It is preferred that, the motor 6 is embedded or durface mounted permanent magnet synchronous motor.
The system by the setting of the annexation between each module and signal transmission relation, and rotor be in it is static or
Amount of exercise can be superimposed in original angle under person's motion state, it is to avoid in the prior art can only it is static in motor or
The limitation of offset can only be detected under motor movement state, the accuracy of detection of offset is improved.
Claims (7)
1. a kind of rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor, it is characterised in that：Including control mould
Block, drive module, current detection module, angle detection module, inverter and motor, the control module respectively with the driving
Module, current detection module and the electrical connection of angle detection module, the drive module are electrically connected with the inverter, the inversion
Device is connected with the motor by three-phase power line, and the output end of the current detection module input and the inverter connects
Connect, the angle detection module is electrically connected with the motor, the inverter is used to input a voltage signal, institute to the motor
Stating current detection module is used to detect three-phase current signal of the motor under the voltage, and by the three-phase current signal
Transmit to the control module, the angle detection module is used for the angle signal for detecting the angle of the rotor, and
The angle signal is transmitted to the control module, the control module is used for according to the three-phase current signal, the angle
The anglec of rotation that degree signal and motor are produced under the voltage signal exports a pulse signal to the drive module, described
Drive module is used to amplify to export a switching signal after the pulse signal to the inverter.
2. the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor according to claim 1, its feature
It is：The control module is single-chip microcomputer or digital signal processor.
3. the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor according to claim 2, its feature
It is：The angle detection module includes rotary transformer and decoding circuit.
4. the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor according to claim 3, its feature
It is：The current detection module includes current transformer and signal conditioning circuit.
5. the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor according to claim 4, its feature
It is：The drive module includes optical coupling isolation circuit, drive circuit and power circuit.
6. the rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor according to claim 5, its feature
It is：The inverter includes the three phase inverter bridge that six discrete igbt transistors or IGBT module are constituted.
7. the rotor displacement amount detection of the position sensor of the permagnetic synchronous motor according to any one in claim 1-6
System, it is characterised in that：The motor is embedded or durface mounted permanent magnet synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349290.1U CN206602477U (en) | 2016-12-09 | 2016-12-09 | The rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349290.1U CN206602477U (en) | 2016-12-09 | 2016-12-09 | The rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor |
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| CN206602477U true CN206602477U (en) | 2017-10-31 |
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| CN201621349290.1U Active CN206602477U (en) | 2016-12-09 | 2016-12-09 | The rotor displacement amount detection systems of the position sensor of permagnetic synchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586250A (en) * | 2018-12-03 | 2019-04-05 | 中冶南方（武汉）自动化有限公司 | Detection and protection method for initial angle deviation of rotary transformer |
| CN113341308A (en) * | 2021-04-19 | 2021-09-03 | 云南电网有限责任公司临沧供电局 | Method and system for judging action characteristics of isolating switch |
-
2016
- 2016-12-09 CN CN201621349290.1U patent/CN206602477U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586250A (en) * | 2018-12-03 | 2019-04-05 | 中冶南方（武汉）自动化有限公司 | Detection and protection method for initial angle deviation of rotary transformer |
| CN109586250B (en) * | 2018-12-03 | 2020-05-08 | 中冶南方（武汉）自动化有限公司 | Detection and protection method for initial angle deviation of rotary transformer |
| CN113341308A (en) * | 2021-04-19 | 2021-09-03 | 云南电网有限责任公司临沧供电局 | Method and system for judging action characteristics of isolating switch |
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