CN110729701A - Control method of permanent magnet synchronous motor servo control system - Google Patents
Control method of permanent magnet synchronous motor servo control system Download PDFInfo
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- CN110729701A CN110729701A CN201911034643.7A CN201911034643A CN110729701A CN 110729701 A CN110729701 A CN 110729701A CN 201911034643 A CN201911034643 A CN 201911034643A CN 110729701 A CN110729701 A CN 110729701A
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- magnet synchronous
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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
- H02H7/0805—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 synchronous motors
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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
- H02H7/0822—Integrated protection, motor control centres
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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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- 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
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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
Abstract
The invention discloses a control method of a permanent magnet synchronous motor servo control system, which specifically comprises the following steps: s1, collecting the current of a controller in the permanent magnet synchronous motor through a current collecting unit, sending the current to the interior of a circuit detection unit through an obtaining unit, detecting the current through the circuit detection unit, if the current is normal, performing AD conversion on the current by the controller for use, and if the detected current is abnormal, processing the current of the controller through a fault signal processing module. The control method of the permanent magnet synchronous motor servo control system can realize timely control of the motor to be closed when overcurrent occurs, meanwhile, the voltage, the current and the temperature of the motor during operation are monitored, the operation of the motor is controlled according to the monitoring result, the effect of effective prediction is achieved, the service life of the permanent magnet synchronous motor is prolonged, and the control method has the advantages of being simple and easy to achieve.
Description
Technical Field
The invention relates to the technical field of permanent magnet synchronous motors, in particular to a control method of a servo control system of a permanent magnet synchronous motor.
Background
The permanent magnet synchronous motor is a synchronous motor which generates a synchronous rotating magnetic field by permanent magnet excitation, the permanent magnet is used as a rotor to generate a rotating magnetic field, a three-phase stator winding is reacted through an armature under the action of the rotating magnetic field to induce three-phase symmetrical current, at the moment, the kinetic energy of the rotor is converted into electric energy, and the permanent magnet synchronous motor is used as a generator; in addition, when three-phase symmetrical current is introduced to the stator side, the three-phase stator current generates a rotating magnetic field in the space due to the fact that the phase difference of the three-phase stator is 120 in the space position, the rotor rotates under the action of electromagnetic force to move, electric energy is converted into kinetic energy at the moment, and the permanent magnet synchronous motor serves as a motor.
When the permanent magnet synchronous motor breaks down, the driving signal is generally closed in a PWM (pulse width modulation) mode, so that a single protection mode is suitable for most fault conditions, but the main circuit device in the synchronous motor cannot be effectively protected, the direct current voltage output by rectification still exists all the time, the fault problem possibly occurring in the circuit cannot be predicted at the same time, the service life of the permanent magnet synchronous motor is shortened, and certain potential safety hazards are caused.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a control method of a permanent magnet synchronous motor servo control system, which solves the problems that the main circuit device in the synchronous motor cannot be effectively protected through PWM and the possible fault problem in the circuit cannot be predicted, thereby reducing the service life of the permanent magnet synchronous motor.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a control method of a permanent magnet synchronous motor servo control system specifically comprises the following steps:
s1, collecting the current of a controller in the permanent magnet synchronous motor through a current collecting unit, sending the current to the interior of a circuit detection unit through an obtaining unit, detecting the current through the circuit detection unit, if the current is normal, performing AD conversion on the current by the controller for use, and if the detected current is abnormal, processing the current of the controller through a fault signal processing module and stopping an inverter in the permanent magnet synchronous motor from running through a PWM driving module;
s2, before the failure problem occurs, a signal acquisition unit in the failure prediction processing layer monitors the running condition of the motor, and the current, voltage and temperature values of the motor during working can be acquired through a current acquisition module, a voltage acquisition module and a temperature detection module;
s3, sending the monitored numerical information to the inside of the analysis processing unit according to the preset threshold value in each module in S2, analyzing the numerical information in the inside of the analysis processing unit, and if any numerical information exceeds the preset threshold value, protecting the main circuit device by a controller through a main circuit protection system;
s4, detecting an overcurrent signal of an IPM module in the permanent magnet synchronous motor through an overcurrent signal acquisition unit, starting timing through a timing module when the overcurrent signal is detected, setting the timing duration through a preset module by the timing module, controlling the IGBT switching tube to be disconnected through an IGBT disconnection module when the timing duration exceeds the preset duration, and keeping the states of six switching tubes of the IGBT unchanged until the permanent magnet synchronous motor is stopped if the timing duration does not exceed the preset duration.
Preferably, in step S1, the input terminal of the current collecting unit is electrically connected to the output terminal of the controller through a wire, the output terminal of the current collecting unit is electrically connected to the input terminal of the circuit detecting unit through a wire, and the output terminal of the circuit detecting unit is electrically connected to the input terminal of the controller through a wire.
Preferably, in step S1, the output terminal of the controller is electrically connected to the input terminal of the AD conversion module through a wire, and the controller is connected to the fault signal processing module in a wireless manner in a bidirectional manner.
Preferably, in step S1, the PWM driving module is wirelessly connected to the controller in a bidirectional manner.
Preferably, in step S2, the output end of the failure prediction processing layer is electrically connected to the input end of the controller through a wire, the failure prediction processing layer includes a signal acquisition unit, and the signal acquisition unit includes a current acquisition module, a voltage acquisition module, and a temperature detection module.
Preferably, in step S3, the input end of the analysis processing unit is electrically connected to the output end of the signal acquisition unit through a wire, and the main circuit protection system is connected to the controller in a bidirectional manner through wireless.
Preferably, in step S4, the overcurrent signal acquisition unit is bidirectionally connected to the timing module via wireless, and the timing module is bidirectionally connected to the preset module via wireless.
Preferably, in step S4, the output end of the over-current signal collecting unit is electrically connected to the input end of the IPM module through a wire, and the output end of the IPM module is electrically connected to the input end of the IGBT disconnection module through a wire.
(III) advantageous effects
The invention provides a control method of a permanent magnet synchronous motor servo control system. The method has the following beneficial effects: the control method of the permanent magnet synchronous motor servo control system comprises the steps that the current of a controller in the permanent magnet synchronous motor is collected through a current collecting unit through S1 and is sent to the interior of a circuit detection unit through an obtaining unit, the current is detected through the circuit detection unit, if the current is normal, the controller carries out AD conversion on the current and then uses the current, if the detected current is abnormal, the current of the controller is processed through a fault signal processing module, and an inverter in the permanent magnet synchronous motor is stopped to run through a PWM driving module; s2, before the failure problem occurs, a signal acquisition unit in the failure prediction processing layer monitors the running condition of the motor, and the current, voltage and temperature values of the motor during working can be acquired through a current acquisition module, a voltage acquisition module and a temperature detection module; s3, sending the monitored numerical information to the inside of the analysis processing unit according to the preset threshold value in each module in S2, analyzing the numerical information in the inside of the analysis processing unit, and if any numerical information exceeds the preset threshold value, protecting the main circuit device by a controller through a main circuit protection system; s4, detecting an overcurrent signal of an IPM module in the permanent magnet synchronous motor through an overcurrent signal acquisition unit, timing through a timing module when detecting the overcurrent signal, setting the timing duration by a preset module by the timing module, controlling the IGBT switching tube to be switched off through an IGBT switching-off module when the timing duration exceeds the preset duration, keeping the states of six switching tubes of the IGBT until the permanent magnet synchronous motor stops if the timing duration does not exceed the preset duration, realizing timely control of the motor to be switched off when overcurrent occurs by detecting the overcurrent signal of the permanent magnet synchronous motor, effectively improving the control stability, monitoring the voltage, the current and the temperature of the motor during operation, controlling the operation of the motor according to the monitoring result, achieving the functions of effective prediction and protection, and prolonging the service life of the permanent magnet synchronous motor, meanwhile, the method has the advantages of simplicity and easiness in implementation.
Drawings
FIG. 1 is a schematic block diagram of the architecture of the system of the present invention;
FIG. 2 is a schematic block diagram of the main circuit protection system configuration of the present invention;
FIG. 3 is a functional block diagram of a failure prediction processing layer architecture of the present invention;
FIG. 4 is a schematic block diagram of the circuit detecting unit structure of the present 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.
Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: the utility model provides a control method of PMSM servo control system, can realize in time controlling the closing of motor when overflowing and produce, effectively improve the stability of control, simultaneously to the motor voltage when the operation, electric current and temperature monitor, control the operation of motor according to the monitoring result, reach effective prediction and protective effect, prolonged this PMSM's life, the advantage that has the method simultaneously and easily to realize specifically includes following step:
s1, collecting the current of a controller in the permanent magnet synchronous motor through a current collecting unit, sending the current to the interior of a circuit detection unit through an obtaining unit, detecting the current through the circuit detection unit, if the current is normal, performing AD conversion on the current by the controller for use, and if the detected current is abnormal, processing the current of the controller through a fault signal processing module and stopping an inverter in the permanent magnet synchronous motor from running through a PWM driving module;
s2, before the failure problem occurs, a signal acquisition unit in the failure prediction processing layer monitors the running condition of the motor, and the current, voltage and temperature values of the motor during working can be acquired through a current acquisition module, a voltage acquisition module and a temperature detection module;
s3, sending the monitored numerical information to the inside of the analysis processing unit according to the preset threshold value in each module in S2, analyzing the numerical information in the inside of the analysis processing unit, and if any numerical information exceeds the preset threshold value, protecting the main circuit device by a controller through a main circuit protection system;
s4, detecting an overcurrent signal of an IPM module in the permanent magnet synchronous motor through an overcurrent signal acquisition unit, starting timing through a timing module when the overcurrent signal is detected, setting the timing duration through a preset module by the timing module, controlling the IGBT switching tube to be disconnected through an IGBT disconnection module when the timing duration exceeds the preset duration, and keeping the states of six switching tubes of the IGBT unchanged until the permanent magnet synchronous motor is stopped if the timing duration does not exceed the preset duration.
In the present invention, in step S1, the input end of the current collection unit is electrically connected to the output end of the controller through a wire, the output end of the current collection unit is electrically connected to the input end of the circuit detection unit through a wire, and the output end of the circuit detection unit is electrically connected to the input end of the controller through a wire, the controller is a master command device for controlling the starting, speed regulation, braking and reversing of the motor by changing the wiring of the master circuit or the control circuit and changing the resistance value in the circuit according to a predetermined sequence, and the master command device is composed of a program counter, an instruction register, an instruction decoder, a timing generator and an operation controller, and is a "decision mechanism" for issuing commands, i.e. completing the coordination and commanding the operation of the whole.
In the present invention, in step S1, the output terminal of the controller is electrically connected to the input terminal of the AD conversion module through a wire, and the controller is bidirectionally connected to the fault signal processing module through a wireless connection.
In the present invention, in step S1, the PWM driving module is connected to the controller in a wireless manner, PWM (pulse width modulation) is an analog control mode, and modulates the bias of the transistor base or the MOS transistor gate according to the change of the corresponding load to change the conduction time of the transistor or the MOS transistor, so as to change the output of the switching regulator, which can keep the output voltage of the power supply constant when the working condition changes, and is a very effective technique for controlling the analog circuit by using the digital signal of the microprocessor, and pulse width modulation is a very effective technique for controlling the analog circuit by using the digital output of the microprocessor, and is widely used in many fields from measurement, communication, power control and conversion.
In the present invention, in step S2, the output terminal of the failure prediction processing layer is electrically connected to the input terminal of the controller through a wire, the failure prediction processing layer includes a signal acquisition unit, and the signal acquisition unit includes a current acquisition module, a voltage acquisition module, and a temperature detection module.
In step S3, the input terminal of the analysis processing unit is electrically connected to the output terminal of the signal acquisition unit through a wire, and the main circuit protection system is connected to the controller in a bidirectional manner through a wireless connection.
In the invention, in step S4, the overcurrent signal acquisition unit is bidirectionally connected to the timing module via wireless, and the timing module is bidirectionally connected to the preset module via wireless.
In step S4, the output terminal of the over-current signal collection unit is electrically connected to the input terminal of the IPM module through a wire, and the output terminal of the IPM module is electrically connected to the input terminal of the IGBT disconnection module through a wire.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (8)
1. A control method of a permanent magnet synchronous motor servo control system is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, collecting the current of a controller in the permanent magnet synchronous motor through a current collecting unit, sending the current to the interior of a circuit detection unit through an obtaining unit, detecting the current through the circuit detection unit, if the current is normal, performing AD conversion on the current by the controller for use, and if the detected current is abnormal, processing the current of the controller through a fault signal processing module and stopping an inverter in the permanent magnet synchronous motor from running through a PWM driving module;
s2, before the failure problem occurs, a signal acquisition unit in the failure prediction processing layer monitors the running condition of the motor, and the current, voltage and temperature values of the motor during working can be acquired through a current acquisition module, a voltage acquisition module and a temperature detection module;
s3, sending the monitored numerical information to the inside of the analysis processing unit according to the preset threshold value in each module in S2, analyzing the numerical information in the inside of the analysis processing unit, and if any numerical information exceeds the preset threshold value, protecting the main circuit device by a controller through a main circuit protection system;
s4, detecting an overcurrent signal of an IPM module in the permanent magnet synchronous motor through an overcurrent signal acquisition unit, starting timing through a timing module when the overcurrent signal is detected, setting the timing duration through a preset module by the timing module, controlling the IGBT switching tube to be disconnected through an IGBT disconnection module when the timing duration exceeds the preset duration, and keeping the states of six switching tubes of the IGBT unchanged until the permanent magnet synchronous motor is stopped if the timing duration does not exceed the preset duration.
2. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in step S1, the input terminal of the current collecting unit is electrically connected to the output terminal of the controller through a wire, the output terminal of the current collecting unit is electrically connected to the input terminal of the circuit detecting unit through a wire, and the output terminal of the circuit detecting unit is electrically connected to the input terminal of the controller through a wire.
3. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in the step S1, the output end of the controller is electrically connected to the input end of the AD conversion module through a wire, and the controller is connected to the fault signal processing module in a bidirectional manner through a wireless connection.
4. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in step S1, the PWM driving module is connected to the controller in a bidirectional manner by wireless.
5. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in step S2, the output end of the failure prediction processing layer is electrically connected to the input end of the controller through a wire, the failure prediction processing layer includes a signal acquisition unit, and the signal acquisition unit includes a current acquisition module, a voltage acquisition module, and a temperature detection module.
6. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in step S3, the input terminal of the analysis processing unit is electrically connected to the output terminal of the signal acquisition unit through a wire, and the main circuit protection system is connected to the controller in a bidirectional manner through wireless.
7. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in the step S4, the overcurrent signal acquisition unit is bidirectionally connected to the timing module via wireless, and the timing module is bidirectionally connected to the preset module via wireless.
8. The control method of the permanent magnet synchronous motor servo control system according to claim 1, characterized in that: in step S4, the output terminal of the over-current signal collecting unit is electrically connected to the input terminal of the IPM module through a wire, and the output terminal of the IPM module is electrically connected to the input terminal of the IGBT disconnection module through a wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911034643.7A CN110729701A (en) | 2019-10-29 | 2019-10-29 | Control method of permanent magnet synchronous motor servo control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911034643.7A CN110729701A (en) | 2019-10-29 | 2019-10-29 | Control method of permanent magnet synchronous motor servo control system |
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| CN201911034643.7A Pending CN110729701A (en) | 2019-10-29 | 2019-10-29 | Control method of permanent magnet synchronous motor servo control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522279A (en) * | 2020-05-26 | 2020-08-11 | 庆安集团有限公司 | PDU controller based on thick film circuit and control method thereof |
| CN112186716A (en) * | 2020-09-07 | 2021-01-05 | 季华实验室 | IPM module fault detection and protection circuit of servo driver |
| CN114236377A (en) * | 2021-11-18 | 2022-03-25 | 上海申传电气股份有限公司 | Health condition monitoring device of driving part of permanent magnet synchronous motor for monorail crane |
| CN114303981A (en) * | 2021-12-30 | 2022-04-12 | 深圳市润农科技有限公司 | Linkage control method for material conveying line of feeder |
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| CN107547026A (en) * | 2017-09-18 | 2018-01-05 | 南京理工大学 | A kind of ultrahigh speed permagnetic synchronous motor drive control device based on dual core |
| CN107615644A (en) * | 2015-06-04 | 2018-01-19 | 株式会社日立产机系统 | Power inverter |
| CN109038498A (en) * | 2018-08-29 | 2018-12-18 | 深圳腾势新能源汽车有限公司 | Protection system for motor |
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2019
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| CN204179642U (en) * | 2014-10-27 | 2015-02-25 | 青岛海尔科技有限公司 | A kind of device for overcurrent protection and air-conditioning |
| CN107615644A (en) * | 2015-06-04 | 2018-01-19 | 株式会社日立产机系统 | Power inverter |
| CN107547026A (en) * | 2017-09-18 | 2018-01-05 | 南京理工大学 | A kind of ultrahigh speed permagnetic synchronous motor drive control device based on dual core |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111522279A (en) * | 2020-05-26 | 2020-08-11 | 庆安集团有限公司 | PDU controller based on thick film circuit and control method thereof |
| CN112186716A (en) * | 2020-09-07 | 2021-01-05 | 季华实验室 | IPM module fault detection and protection circuit of servo driver |
| CN114236377A (en) * | 2021-11-18 | 2022-03-25 | 上海申传电气股份有限公司 | Health condition monitoring device of driving part of permanent magnet synchronous motor for monorail crane |
| CN114236377B (en) * | 2021-11-18 | 2023-08-11 | 上海申传电气股份有限公司 | Permanent magnet synchronous motor driving part health condition monitoring device for monorail crane |
| CN114303981A (en) * | 2021-12-30 | 2022-04-12 | 深圳市润农科技有限公司 | Linkage control method for material conveying line of feeder |
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