CN111682804A - Special controller for oil pump permanent magnet synchronous motor without position sensor - Google Patents
Special controller for oil pump permanent magnet synchronous motor without position sensor Download PDFInfo
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- CN111682804A CN111682804A CN202010360114.2A CN202010360114A CN111682804A CN 111682804 A CN111682804 A CN 111682804A CN 202010360114 A CN202010360114 A CN 202010360114A CN 111682804 A CN111682804 A CN 111682804A
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- permanent magnet
- synchronous motor
- magnet synchronous
- input end
- oil pump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/12—Observer control, e.g. using Luenberger observers or Kalman filters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/17—Circuit arrangements for detecting position and for generating speed information
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/34—Modelling or simulation for control purposes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention provides a special controller for a position-sensor-free oil pump permanent magnet synchronous motor, and relates to the field of controllers. The controller special for the oil pump permanent magnet synchronous motor without the position sensor comprises a driving circuit, a flux linkage observer, a speed regulator, a current pulse generation module, a logic control unit, an A/D converter and a permanent magnet synchronous motor, wherein the driving circuit is connected with the input end of the permanent magnet synchronous motor, the output end of the current pulse generation module is connected with the control signal input end of the driving circuit, the signal output end of the current regulator is connected with the signal input end of the current pulse generation module, and the output end of the speed regulator is connected with the input end of the logic control unit. Through the use of the special controller for the oil pump permanent magnet synchronous motor without the position sensor, the structure of the permanent magnet synchronous motor becomes simple, the speed regulation performance is better, one-key setting can be realized, and the use is very convenient.
Description
Technical Field
The invention relates to the technical field of controllers, in particular to a special controller for a position-sensor-free oil pump permanent magnet synchronous motor.
Background
The motor controller is an integrated circuit which controls the motor to work according to the set direction, speed, angle and response time through active work. The motor controller may be operated manually, remotely or automatically, and may include only the function of starting and stopping the motor, or may include other more complex functions. The motor controller may be categorized by the type of cooperating motor, such as driving a permanent magnet synchronous motor, a servo motor, a series or separately excited dc motor, or an ac motor. The motor controller is connected to a power source, such as a battery or mains, and has circuits for inputting and outputting (digital or analog) signals.
At present, oil pump driving motors of hydraulic systems of machine tools or other equipment are all cage type three-phase alternating current motors, and speed regulating systems of the motors are frequency converters. The frequency converter has the defects of complex structure, higher requirements on the use environment, higher cost and the like. As shown in fig. 1, a position sensor is mounted on a motor of a conventional permanent magnet synchronous motor to detect the position and feed back the speed of the motor, so that the motor can be started and controlled, the structure of the whole motor becomes complex, the speed regulation performance is general, the debugging is complex, and the consumed working time is long.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a special controller for an oil pump permanent magnet synchronous motor without a position sensor, and solves the problems of complex structure, general speed regulation performance and complex debugging of the existing motor controller.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a controller special for a position-sensorless oil pump permanent magnet synchronous motor comprises a driving circuit, a flux linkage observer, a speed regulator, a current pulse generation module, a logic control unit, an A/D converter and a permanent magnet synchronous motor, wherein the driving circuit is connected with the input end of the permanent magnet synchronous motor, the output end of the current pulse generation module is connected with the control signal input end of the driving circuit, the signal output end of the current regulator is connected with the signal input end of the current pulse generation module, the output end of the speed regulator is connected with the input end of the logic control unit, the A/D converter is connected with the signal input end of the current regulator, the speed feedback output end of the flux linkage observer is connected with the signal input end of the speed regulator, and the position signal output end of the flux linkage observer is connected with the input end of the logic unit, the input end of the magnetic linkage controller is connected with the permanent magnet synchronous motor, and the input end of the A/D converter is connected with the permanent magnet synchronous motor.
Preferably, the current pulse generating module comprises a triangular wave generator and a PWM generator, and an output end of the triangular wave generator is connected with an input end of the PWM generator.
Preferably, the output of the logic control unit is connected to the control input of the PWM generator, and the output of the current regulator is connected to the control input of the PWM generator.
Preferably, the input end of the control circuit is connected with a power supply.
Preferably, the driving circuit is formed by connecting a diode, a power tube, a resistor and two control switches.
Preferably, the speed regulator, the current regulator and the logic control unit form a regulating system of the whole controller.
The working principle is as follows: firstly, the controller is connected with the permanent magnet synchronous motor to obtain specific parameters of the permanent magnet synchronous motor, the controller is switched to an open loop state, an A/D converter converts a current signal of the permanent magnet synchronous motor into a digital signal and transmits the digital signal to a current regulator, a triangular wave generator continuously injects high-frequency current pulses to a PWM generator, the current regulator transmits a regulating signal to the PWM generator, the PWM generator regulates the high-frequency current pulses and then transmits the high-frequency current pulses into a control circuit, so that a power tube is once conducted according to a program setting mode, and the permanent magnet synchronous motor rotates at a low speed; and finally, when the permanent magnet synchronous motor rotates, the controller drives the flux linkage observer to detect the flux linkage instantaneous value of the permanent magnet synchronous motor to judge the position and speed instantaneous value of the motor rotor, so that the controller enters closed-loop control, then the flux linkage observer transmits speed feedback to the speed regulator, the speed regulator transmits a regulating signal to the logic control unit, the flux linkage observer directly transmits the position feedback to the logic control unit, then the logic control unit transmits the processed regulating signal to the PWM generator, and the PWM generator regulates current pulses transmitted from the triangular wave generator again and transmits the current pulses to the drive circuit to complete the starting of the motor.
(III) advantageous effects
The invention provides a special controller for an oil pump permanent magnet synchronous motor without a position sensor. The method has the following beneficial effects:
1. compared with the existing device, the flux linkage observer is used for replacing the position sensor in the special controller for the oil pump permanent magnet synchronous motor, namely, a software algorithm model is used for replacing the position sensor hardware, and the hardware structure of the controller is simplified.
2. Compared with the existing device, the device adopts a software algorithm model to replace position sensor hardware, the speed of the whole motor controller is adjusted more conveniently, stably and accurately through a software algorithm, and meanwhile, the debugging difficulty is simplified, so that common operators can debug the motor controller.
Drawings
FIG. 1 is a control schematic diagram of a conventional permanent magnet synchronous motor;
fig. 2 is a schematic diagram of a position sensorless synchronous motor controller designed by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 2, an embodiment of the present invention provides a controller dedicated for a position-sensorless oil pump permanent magnet synchronous motor, including a driving circuit, a flux linkage observer, a speed regulator, a current pulse generation module, a logic control unit, an a/D converter, and a permanent magnet synchronous motor, where the driving circuit is connected to an input terminal of the permanent magnet synchronous motor, the controller controls the operation of the oil pump permanent magnet synchronous motor by controlling the driving circuit, an output terminal of the current pulse generation module is connected to a control signal input terminal of the driving circuit, the current pulse generation module controls the operation of the driving circuit by generating pulses, a signal output terminal of the current regulator is connected to a signal input terminal of the current pulse generation module, an output terminal of the speed regulator is connected to an input terminal of the logic control unit, the a/D converter is connected to a signal input terminal of the current regulator, the A/D converter converts a current signal of the permanent magnet synchronous motor into a digital signal and transmits the digital signal to the current regulator, the speed feedback output end of the flux linkage observer is connected with the signal input end of the speed regulator, the position signal output end of the flux linkage observer is connected with the input end of the logic unit, the input end of the flux linkage controller is connected with the permanent magnet synchronous motor, when the permanent magnet synchronous motor rotates, the controller drives the flux linkage observer to detect the flux linkage instantaneous value of the permanent magnet synchronous motor to judge the position and speed instantaneous value of the motor rotor, then the flux linkage observer transmits the speed feedback to the speed regulator, the speed regulator transmits a regulating signal to the logic control unit, the flux linkage observer directly transmits the position feedback to the logic control unit, and the input end of the A/D converter is connected with the permanent magnet synchronous motor.
The current pulse generation module comprises a triangular wave generator and a PWM generator, the output end of the triangular wave generator is connected with the input end of the PWM generator, the triangular wave generator continuously injects high-frequency current pulses into the PWM generator, the PWM generator adjusts the high-frequency current pulses and then transmits the high-frequency current pulses into the control circuit, the output end of the logic control unit is connected with the control input end of the PWM generator, the output end of the current regulator is connected with the control input end of the PWM generator, the input end of the control circuit is connected with a power supply, the driving circuit is formed by connecting a diode, a power tube, a resistor and two control switches, and the speed regulator, the current regulator and the logic control unit form a regulation system of the whole controller.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A controller special for a position sensor-free oil pump permanent magnet synchronous motor comprises a driving circuit, a flux linkage observer, a speed regulator, a current pulse generation module, a logic control unit, an A/D converter and a permanent magnet synchronous motor, and is characterized in that: the drive circuit is connected with the input end of the permanent magnet synchronous motor, the output end of the current pulse generation module is connected with the control signal input end of the drive circuit, the signal output end of the current regulator is connected with the signal input end of the current pulse generation module, the output end of the speed regulator is connected with the input end of the logic control unit, the A/D converter is connected with the signal input end of the current regulator, the speed feedback output end of the flux linkage observer is connected with the signal input end of the speed regulator, the position signal output end of the flux linkage observer is connected with the input end of the logic unit, the input end of the flux linkage controller is connected with the permanent magnet synchronous motor, and the input end of the A/D converter is connected with the permanent magnet synchronous motor.
2. The controller special for the oil pump permanent magnet synchronous motor without the position sensor according to claim 1, characterized in that: the current pulse generation module comprises a triangular wave generator and a PWM generator, and the output end of the triangular wave generator is connected with the input end of the PWM generator.
3. The controller special for the oil pump permanent magnet synchronous motor without the position sensor as claimed in claim 2, wherein: the output end of the logic control unit is connected with the control input end of the PWM generator, and the output end of the current regulator is connected with the control input end of the PWM generator.
4. The controller special for the oil pump permanent magnet synchronous motor without the position sensor according to claim 1, characterized in that: and the input end of the control circuit is connected with a power supply.
5. The controller special for the oil pump permanent magnet synchronous motor without the position sensor according to claim 1, characterized in that: the driving circuit is formed by connecting a diode, a power tube, a resistor and two control switches.
6. The controller special for the oil pump permanent magnet synchronous motor without the position sensor according to claim 1, characterized in that: the speed regulator, the current regulator and the logic control unit form a regulating system of the whole controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010360114.2A CN111682804A (en) | 2020-04-30 | 2020-04-30 | Special controller for oil pump permanent magnet synchronous motor without position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010360114.2A CN111682804A (en) | 2020-04-30 | 2020-04-30 | Special controller for oil pump permanent magnet synchronous motor without position sensor |
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| Publication Number | Publication Date |
|---|---|
| CN111682804A true CN111682804A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010360114.2A Pending CN111682804A (en) | 2020-04-30 | 2020-04-30 | Special controller for oil pump permanent magnet synchronous motor without position sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004166408A (en) * | 2002-11-13 | 2004-06-10 | Yoichi Hayashi | Permanent magnet synchronous motor control method |
| JP2009290962A (en) * | 2008-05-28 | 2009-12-10 | Fuji Electric Systems Co Ltd | Controller of permanent magnet type synchronous motor |
| CN103872951A (en) * | 2014-04-23 | 2014-06-18 | 东南大学 | Permanent magnet synchronous motor torque control method based on sliding mode flux linkage observer |
| CN107809191A (en) * | 2017-10-24 | 2018-03-16 | 厦门金龙汽车新能源科技有限公司 | A kind of angular observation method of synchronous motor zero-velocity sensor |
| CN108155838A (en) * | 2016-12-02 | 2018-06-12 | 长沙市日业电气有限公司 | A kind of rotating speed method for tracing based on permanent magnet synchronous motor open loop |
| CN109372786A (en) * | 2018-09-25 | 2019-02-22 | 广东美的制冷设备有限公司 | The starting control method and device of DC fan, outdoor unit, air conditioner |
| CN109787525A (en) * | 2019-02-26 | 2019-05-21 | 深圳和而泰智能控制股份有限公司 | Permanent magnet synchronous motor magnetic linkage estimating and measuring method, device and computer equipment |
| CN110492820A (en) * | 2019-08-13 | 2019-11-22 | 华中科技大学 | A kind of permanent magnet synchronous motor sensorless strategy method and system |
-
2020
- 2020-04-30 CN CN202010360114.2A patent/CN111682804A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004166408A (en) * | 2002-11-13 | 2004-06-10 | Yoichi Hayashi | Permanent magnet synchronous motor control method |
| JP2009290962A (en) * | 2008-05-28 | 2009-12-10 | Fuji Electric Systems Co Ltd | Controller of permanent magnet type synchronous motor |
| CN103872951A (en) * | 2014-04-23 | 2014-06-18 | 东南大学 | Permanent magnet synchronous motor torque control method based on sliding mode flux linkage observer |
| CN108155838A (en) * | 2016-12-02 | 2018-06-12 | 长沙市日业电气有限公司 | A kind of rotating speed method for tracing based on permanent magnet synchronous motor open loop |
| CN107809191A (en) * | 2017-10-24 | 2018-03-16 | 厦门金龙汽车新能源科技有限公司 | A kind of angular observation method of synchronous motor zero-velocity sensor |
| CN109372786A (en) * | 2018-09-25 | 2019-02-22 | 广东美的制冷设备有限公司 | The starting control method and device of DC fan, outdoor unit, air conditioner |
| CN109787525A (en) * | 2019-02-26 | 2019-05-21 | 深圳和而泰智能控制股份有限公司 | Permanent magnet synchronous motor magnetic linkage estimating and measuring method, device and computer equipment |
| CN110492820A (en) * | 2019-08-13 | 2019-11-22 | 华中科技大学 | A kind of permanent magnet synchronous motor sensorless strategy method and system |
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