CN112332728A - Flux weakening control system and method - Google Patents
Flux weakening control system and method Download PDFInfo
- Publication number
- CN112332728A CN112332728A CN202011322793.0A CN202011322793A CN112332728A CN 112332728 A CN112332728 A CN 112332728A CN 202011322793 A CN202011322793 A CN 202011322793A CN 112332728 A CN112332728 A CN 112332728A
- Authority
- CN
- China
- Prior art keywords
- module
- axis
- current
- control current
- motor
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/0085—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed
- H02P21/0089—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed using field weakening
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/0003—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
Abstract
The embodiment of the application relates to the field of motors and discloses a flux weakening control system and method. In the application, under the condition that the output voltage of the motor module is greater than the reference control voltage Us, the PI adjusting module is in a weak magnetic control state, the PI adjusting module obtains a d-axis control current Id through the output voltage and the reference control voltage Us, and the q-axis current adjusting module obtains a q-axis control current Iq according to the d-axis control current Id, so that the motor module operates according to the d-axis control current Id and the q-axis control current Iq.
Description
Technical Field
The embodiment of the invention relates to the field of motors, in particular to a flux-weakening control system and method.
Background
At present, in the field of motors, field weakening control can control current to weaken a rotor excitation magnetic field, so that the rotating speed of the motor is further improved, and therefore field weakening control in which rotating speed needs to be improved in servo such as electric vehicles and the like is widely applied. In the related art, in order to perform field weakening control, a control current of a current d-axis of a motor is mainly obtained, so that a working magnetic field of the motor is reduced by adjusting the current of the d-axis.
However, since only the current of the d-axis is adjusted, which is equivalent to reducing the magnetic field of the motor only in the d-axis direction, during the high-speed operation of the motor, the imbalance of the motor operation occurs by only reducing the magnetic field in the d-axis direction, which affects the stability of the motor in the field weakening control state.
Disclosure of Invention
The embodiment of the invention aims to provide a flux-weakening control system and method, which can improve the running stability of a motor in a flux-weakening control state.
To solve the above technical problem, an embodiment of the present invention provides a flux weakening control system, including: the device comprises a PI adjusting module, a q-axis current adjusting module and a motor module; the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is, and an output end of the q-axis current regulating module Is connected with a second input end of the motor module; the output end of the motor module is connected with the second input end of the PI adjusting module; the PI adjusting module is used for obtaining a d-axis control current Id according to the output voltage and the reference control voltage Us under the condition that the output voltage of the motor module is larger than the reference control voltage Us, and transmitting the d-axis control current Id to the q-axis current adjusting module and the motor module; the q-axis current adjusting module Is used for obtaining a q-axis control current Iq according to the d-axis control current Id and the reference control current Is and transmitting the q-axis control current Iq to the motor module; and the motor module is used for operating according to the d-axis control current Id and the q-axis control current Iq.
The embodiment of the invention also provides a weak magnetic control method which is applied to a PI regulation module in a weak magnetic control system; the flux weakening control system further comprises: the q-axis current adjusting module and the motor module are connected with each other; the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; the output end of the motor module is connected with the second input end of the PI adjusting module; the method comprises the following steps:
acquiring output voltage output by the motor module; under the condition that the output voltage is greater than the reference control voltage Us, entering a field weakening control state, and obtaining a d-axis control current Id according to the output voltage and the reference control voltage Us; inputting the d-axis control current Id to the q-axis current regulating module, and enabling the q-axis current regulating module to obtain a q-axis control current Iq according to the d-axis control current Id and inputting the q-axis control current Iq to the motor module; and inputting the d-axis control current Id to a motor module, and enabling the motor module to operate according to the d-axis control current Id and the q-axis control current Iq.
The embodiment of the invention also provides a weak magnetic control method which is applied to a q-axis current regulation module in a weak magnetic control system; the flux weakening control system further comprises: the PI regulation module and the motor module; the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; the output end of the motor module is connected with the second input end of the PI adjusting module; the method comprises the following steps: receiving the reference control current Is and a d-axis control current Id generated by the PI regulation module, wherein the d-axis control current Id Is obtained by the PI regulation module according to the output voltage of the motor module and the reference control voltage Us when the output feedback voltage Is greater than the reference control voltage Us and enters a field weakening control state; obtaining a q-axis control current Iq according to the reference control current Is and the d-axis control current Id; and inputting the q-axis control current Iq to the motor module, so that the motor module can operate according to the d-axis control current Id and the q-axis control current Iq generated by the PI regulation module.
Compared with the prior art, the method and the device have the advantages that under the condition that the output voltage of the motor module is larger than the reference control voltage Us, the PI adjusting module is in the weak magnetic control state, the PI adjusting module obtains the d-axis control current Id through the output voltage and the reference control voltage Us, and the q-axis current adjusting module obtains the q-axis control current Iq according to the d-axis control current Id, so that the motor module runs according to the d-axis control current Id and the q-axis control current Iq.
In addition, the system further comprises: a filtering module; the input end of the filtering module is connected with the output end of the motor module, and the output end of the filtering module is connected with the input end of the PI adjusting module. Through setting up the filtering module, can improve output voltage's accuracy with the signal filtering of other frequencies in motor module's the output voltage.
In addition, the filtering module is a low-pass filter.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a field weakening control system of a first embodiment of the present application;
FIG. 2 is a flow chart of a field weakening control method according to a second embodiment of the present application;
fig. 3 is a flowchart illustrating a field weakening control method according to a third embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
The first embodiment of the present invention relates to a field weakening control system, which has a specific structure as shown in fig. 1 and includes: the device comprises a PI adjusting module 101, a q-axis current adjusting module 102 and a motor module 103.
Specifically, a first input terminal of the PI regulation module 101 is configured to receive a reference control voltage Us; the output end of the PI adjusting module 101 is connected with the first input end of the motor module 103, and the output end of the PI adjusting module 101 is also connected with the first input end of the q-axis current adjusting module 102; a second input end of the q-axis current regulation module 102 Is used for receiving a reference control current Is, and an output end of the q-axis current regulation module 102 Is connected with a second input end of the motor module 103; the output end of the motor module 103 is connected with the second input end of the PI regulation module 101; the PI regulation module 101 is configured to obtain a d-axis control current Id according to the output voltage and the reference control voltage Us when the output voltage of the motor module 103 is greater than the reference control voltage Us, and transmit the d-axis control current Id to the q-axis current regulation module 102 and the motor module 103; the q-axis current adjusting module 102 Is configured to obtain a q-axis control current Iq according to the d-axis control current Id and the reference control current Is, and transmit the q-axis control current Iq to the motor module 103; the motor module 103 is used for operating according to the d-axis control current Id and the q-axis control current Iq.
In practical application, in the control of the permanent magnet synchronous motor, in order to obtain the control characteristic similar to that of a direct current motor, a coordinate system is established on a motor rotor, the coordinate system and the rotor rotate synchronously, the direction of a rotor magnetic field is taken as a d axis, the direction perpendicular to the rotor magnetic field is taken as a q axis, a mathematical model of the motor is converted into the coordinate system, decoupling of the d axis and the q axis can be realized, and therefore good control characteristic is obtained.
In one example, the motor module 103 is a permanent magnet synchronous motor; the PI regulation block 101 is a digital PI regulator.
In this embodiment, a first input end of the PI regulation module 101 receives the reference control voltage Us, a second input end of the PI regulation module 101 receives the output voltage of the motor module 103, and determines whether to enter a field weakening control state according to a magnitude relation between the reference control voltage Us and the output voltage of the motor module 103, that is, when the output voltage of the motor module 103 is greater than the reference control voltage Us, the PI regulation module 101 enters the field weakening control state, obtains a d-axis control current Id according to a deviation between the reference control voltage Us and the output voltage of the motor module 103, and transmits the d-axis control current Id to the q-axis current regulation module 102 and the motor module 103; then, the q-axis current adjusting module 102 obtains a q-axis control current Iq according to the d-axis control current Id, and transmits the q-axis control current Iq to the motor module 103, so that the motor module 103 operates according to the d-axis control current Id and the q-axis control current Iq.
It should be noted that after the PI adjustment module 101 enters the field weakening control state, the output voltage of the motor module 103 is continuously received through the second input terminal, and the d-axis control current Id is obtained according to the deviation between the reference control voltage Us and the output voltage of the motor module 103, so that the q-axis current adjustment module 102 continuously adjusts the q-axis control current Iq, and thus adjusts the operation parameters of the motor module 103, that is, the d-axis control current Id and the q-axis control current Iq, in real time.
It should be noted that, after entering the field weakening control state, if the output voltage of the motor module 103 is slightly less than the reference control voltage Us, the PI regulation module 101 does not stop the field weakening control state, and only when the output voltage of the motor module 103 is less than 0.8 to 0.9 times of the reference control voltage Us, for example, when the output voltage of the motor module 103 is less than 0.8Us, or when the output voltage of the motor module 103 is less than 0.9Us, the PI regulation module 101 exits the field weakening control state, at this time, the PI regulation module 101 stops operating, and does not output the d-axis control current Id, which is equivalent to that the d-axis control current Id is 0.
In this embodiment, when the output voltage of the motor module 103 is greater than the reference control voltage Us, the PI regulation module 101 starts the weak magnetic control state, the PI regulation module 101 obtains the d-axis control current Id through the output voltage and the reference control voltage Us, and the q-axis current regulation module 102 obtains the q-axis control current Iq according to the d-axis control current Id, so that the motor module 103 operates according to the d-axis control current Id and the q-axis control current Iq, and compared with the related art in which the operation of the motor module 103 is controlled only by the d-axis control current Id, the stability of the operation of the motor in the weak magnetic control state is improved.
In one example, the system further comprises: a filtering module; the input end of the filter module is connected with the output end of the motor module 103, and the output end of the filter module is connected with the input end of the PI regulation module 101. By arranging the filtering module, signals of other frequencies in the output voltage of the motor module 103 can be filtered, and the accuracy of the output voltage is improved.
Specifically, the filter module in this embodiment filters signals of other frequencies by using the frequency of the output voltage of the motor module 103 as a center frequency, so as to improve the accuracy of the output voltage of the motor module 103, so that the PI adjustment module 101 can obtain the output voltage of the motor module 103 with higher accuracy, thereby improving the accuracy of the adjustment of the whole system. In one example, the filtering module may be a low pass filter.
The second embodiment of the present invention relates to a flux weakening control method, and a specific flow diagram is shown in fig. 2, including the following steps:
Specifically, the present embodiment is applied to a PI regulation module in a flux weakening control system, that is, the execution subject of the present embodiment is the PI regulation module in the flux weakening control system in the first embodiment; the field weakening control system further comprises: the q-axis current adjusting module and the motor module are connected with each other; a first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; and the output end of the motor module is connected with the second input end of the PI adjusting module.
Specifically, the PI regulation module receives the output voltage output by the motor module through the second input terminal, and compares the output voltage with the reference control voltage Us to determine whether to enter a field weakening control state.
And 202, entering a field weakening control state under the condition that the output voltage is greater than the reference control voltage Us, and obtaining the d-axis control current Id according to the output voltage and the reference control voltage Us.
Specifically, the PI regulation module enters a field weakening control state under the condition that the output voltage of the motor module is judged to be greater than the reference control voltage Us, and the d-axis control current Id is obtained according to the output voltage of the motor module and the reference control voltage Us.
In one example, deriving the d-axis control current Id from the output voltage and the reference control voltage Us includes: calculating the deviation of the output voltage from a reference control voltage Us; and obtaining the d-axis control current Id according to the deviation.
And 203, inputting the d-axis control current Id into a q-axis current regulation module, and enabling the q-axis current regulation module to obtain a q-axis control current Iq according to the d-axis control current Id and the reference control current Is and input the q-axis control current Iq into the motor module.
Specifically, the PI adjusting module inputs the obtained d-axis control current Id to the q-axis current adjusting module, and the q-axis current adjusting module obtains a q-axis control current Iq according to the d-axis control current Id after obtaining the d-axis control current Id and inputs the q-axis control current Iq to the motor module.
And step 204, inputting the d-axis control current Id into the motor module, and enabling the motor module to operate according to the d-axis control current Id and the q-axis control current Iq.
Specifically, the PI regulation module inputs the d-axis control current Id to the motor module, and the motor module operates according to the d-axis control current Id and the q-axis control current Iq after receiving the d-axis control current Id and the q-axis control current Iq and transmits output voltage to the PI regulation module in real time.
In one example, after the d-axis control current Id and the q-axis control current Iq are input to the motor module and the motor module operates according to the d-axis control current Id and the q-axis control current Iq, the method further includes: in the case where the voltage of the output voltage is less than 0.8 to 0.9 times the reference control voltage Us, the field-weakening control state is exited. By the mode, the PI adjusting module is prevented from quitting the weak magnetic control state when the output voltage of the motor module is only slightly smaller than the reference control voltage Us, so that the PI adjusting module is prevented from being frequently switched between the weak magnetic state and the non-weak magnetic state, and the stability of the system is improved.
Specifically, when the output voltage of the motor module Is less than 0.8 to 0.9 times the reference control voltage Us, for example, when the output voltage of the motor module Is less than 0.8Us, or when the output voltage of the motor module Is less than 0.9Us, the PI regulation module exits the field weakening control state, and the PI regulation module stops operating, that Is, the d-axis control current Id Is 0, and at this time, the q-axis current regulation module obtains the q-axis control current Iq only according to the reference control current Is, that Is, in the non-field weakening control state, the motor module operates only according to the q-axis control current Iq.
A third embodiment of the present invention relates to a flux weakening control method, and a specific flow diagram is shown in fig. 3, including the following steps:
Specifically, the present embodiment is applied to the q-axis current adjusting module in the field weakening control system of the first embodiment, that is, the execution subject of the present embodiment is the q-axis current adjusting module in the field weakening control system, and the field weakening control system further includes: the PI regulation module and the motor module; a first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; and the output end of the motor module is connected with the second input end of the PI adjusting module.
Specifically, the d-axis control current Id is obtained by the PI regulation module entering a field weakening control state according to the output voltage of the motor module and the reference control voltage Us when the output feedback voltage is greater than the reference control voltage Us.
And step 302, obtaining a q-axis control current Iq according to the reference control current Is and the d-axis control current Id.
And step 303, inputting the q-axis control current Iq into the motor module, and enabling the motor module to operate according to the d-axis control current Id and the q-axis control current Iq generated by the PI regulation module.
It is to be understood that this embodiment is an embodiment corresponding to the second embodiment, and this embodiment may be implemented in cooperation with the second embodiment, and the technical details of the second embodiment are still valid in this embodiment, and are not described herein again to avoid repetition; of course, the related-art details of the present embodiment can also be applied to the second embodiment described above.
In one example, obtaining the q-axis control current Iq according to the reference control current Is and the d-axis control current Id includes: using Iq2＝Is2-Id2The q-axis control current Iq is obtained through calculation according to the current circular equation. That Is, the reference control current Is, the d-axis control current Id, and the q-axis control current Iq satisfy a current circular equation Iq2＝Is2-Id2When the PI regulation module enters a field weakening control state, the d-axis control current Id is determined according to the reference control voltage Us and the output voltage of the motor module, so that the magnitude of the q-axis control current Iq is determined; when the PI regulation module exits from the weak magnetic control state, the d-axis control current Id is 0, and at the moment, according to the current circular equation Iq2＝Is2-Id2The q-axis control current Iq Is the same as the reference control current Is.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A flux weakening control system, comprising: the device comprises a PI adjusting module, a q-axis current adjusting module and a motor module;
the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module;
a second input end of the q-axis current regulating module Is used for receiving a reference control current Is, and an output end of the q-axis current regulating module Is connected with a second input end of the motor module;
the output end of the motor module is connected with the second input end of the PI adjusting module;
the PI adjusting module is used for obtaining a d-axis control current Id according to the output voltage and the reference control voltage Us under the condition that the output voltage of the motor module is larger than the reference control voltage Us, and transmitting the d-axis control current Id to the q-axis current adjusting module and the motor module;
the q-axis current adjusting module Is used for obtaining a q-axis control current Iq according to the d-axis control current Id and the reference control current Is and transmitting the q-axis control current Iq to the motor module;
and the motor module is used for operating according to the d-axis control current Id and the q-axis control current Iq.
2. The flux weakening control system according to claim 1, wherein said system further comprises: a filtering module;
the input end of the filtering module is connected with the output end of the motor module, and the output end of the filtering module is connected with the input end of the PI adjusting module.
3. The field weakening control system according to claim 2, wherein said filtering module is a low pass filter.
4. The field weakening control system according to claim 1, wherein the motor module is a permanent magnet synchronous motor.
5. The field weakening control system according to claim 1, wherein the PI regulation module is a digital PI regulator.
6. A weak magnetic control method is characterized in that the method is applied to a PI regulation module in a weak magnetic control system; the flux weakening control system further comprises: the q-axis current adjusting module and the motor module are connected with each other; the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; the output end of the motor module is connected with the second input end of the PI adjusting module; the method comprises the following steps:
acquiring output voltage output by the motor module;
under the condition that the output voltage is greater than the reference control voltage Us, entering a field weakening control state, and obtaining a d-axis control current Id according to the output voltage and the reference control voltage Us;
inputting the d-axis control current Id to the q-axis current regulating module, and enabling the q-axis current regulating module to obtain a q-axis control current Iq according to the d-axis control current Id and the reference control current Is and inputting the q-axis control current Iq to the motor module;
and inputting the d-axis control current Id to a motor module, and enabling the motor module to operate according to the d-axis control current Id and the q-axis control current Iq.
7. The field weakening control method according to claim 6, wherein after the d-axis control current Id and the q-axis control current Iq are input to the motor module and the motor module is operated according to the d-axis control current Id and the q-axis control current Iq, the method further comprises:
exiting the field weakening control state in case the voltage of the output voltage is less than 0.8 to 0.9 times the reference control voltage Us.
8. The field weakening control method according to claim 6, wherein the obtaining of the d-axis control current Id according to the output voltage and the reference control voltage Us comprises:
calculating a deviation of the output voltage from the reference control voltage Us;
and obtaining the d-axis control current Id according to the deviation.
9. A flux weakening control method is characterized in that the flux weakening control method is applied to a q-axis current adjusting module in a flux weakening control system; the flux weakening control system further comprises: the PI regulation module and the motor module; the first input end of the PI regulation module is used for receiving a reference control voltage Us; the output end of the PI adjusting module is connected with the first input end of the motor module, and the output end of the PI adjusting module is also connected with the first input end of the q-axis current adjusting module; a second input end of the q-axis current regulating module Is used for receiving a reference control current Is of the motor module, and an output end of the q-axis current regulating module Is connected with the second input end of the motor module; the output end of the motor module is connected with the second input end of the PI adjusting module; the method comprises the following steps:
receiving the reference control current Is and a d-axis control current Id generated by the PI regulation module, wherein the d-axis control current Id Is obtained by the PI regulation module according to the output voltage of the motor module and the reference control voltage Us when the output feedback voltage Is greater than the reference control voltage Us and enters a field weakening control state;
obtaining a q-axis control current Iq according to the reference control current Is and the d-axis control current Id;
and inputting the q-axis control current Iq to the motor module, so that the motor module can operate according to the d-axis control current Id and the q-axis control current Iq generated by the PI regulation module.
10. The field weakening control method according to claim 9, wherein the obtaining of the q-axis control current Iq according to the reference control current Is and the d-axis control current Id comprises:
using Iq2＝Is2-Id2The q-axis control current Iq is obtained through calculation according to the current circular equation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322793.0A CN112332728A (en) | 2020-11-23 | 2020-11-23 | Flux weakening control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322793.0A CN112332728A (en) | 2020-11-23 | 2020-11-23 | Flux weakening control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112332728A true CN112332728A (en) | 2021-02-05 |
Family
ID=74322157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011322793.0A Withdrawn CN112332728A (en) | 2020-11-23 | 2020-11-23 | Flux weakening control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112332728A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080224651A1 (en) * | 2007-03-13 | 2008-09-18 | Schulz Steven E | Method and system for controlling permanent magnet ac machines |
| CN101626216A (en) * | 2009-08-05 | 2010-01-13 | 奇瑞汽车股份有限公司 | Flux-weakening control system based on permanent magnet synchronous motor and control method therefor |
| CN106452243A (en) * | 2016-10-26 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Field weakening control system and method for PMSM, refrigerator controller and refrigerator |
| CN110572098A (en) * | 2019-09-19 | 2019-12-13 | 四川虹美智能科技有限公司 | Flux weakening control method for permanent magnet synchronous motor |
-
2020
- 2020-11-23 CN CN202011322793.0A patent/CN112332728A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080224651A1 (en) * | 2007-03-13 | 2008-09-18 | Schulz Steven E | Method and system for controlling permanent magnet ac machines |
| CN101626216A (en) * | 2009-08-05 | 2010-01-13 | 奇瑞汽车股份有限公司 | Flux-weakening control system based on permanent magnet synchronous motor and control method therefor |
| CN106452243A (en) * | 2016-10-26 | 2017-02-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Field weakening control system and method for PMSM, refrigerator controller and refrigerator |
| CN110572098A (en) * | 2019-09-19 | 2019-12-13 | 四川虹美智能科技有限公司 | Flux weakening control method for permanent magnet synchronous motor |
Non-Patent Citations (2)
| Title |
|---|
| 王杰等: "基于电压闭环反馈的永磁同步电机弱磁调速研究", 《电机与控制应用》 * |
| 谢涛: "永磁同步电机弱磁控制策略研究与仿真", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108462206B (en) | Method and device for determining selectable range of virtual inertia and damping coefficient of VSG | |
| DE10344914B4 (en) | Control algorithm for an AC machine without position sensor | |
| CN110149080B (en) | Flux weakening control method and device for permanent magnet synchronous motor | |
| CN110289792B (en) | Calibration method, control method and bench test control system of permanent magnet synchronous motor | |
| DE102010040393A1 (en) | Method and apparatus for low speed permanent magnet motor operation | |
| US10608566B2 (en) | Control apparatus for rotary electric machines | |
| CN113346812B (en) | Compressor control parameter adjusting method, device, equipment and storage medium | |
| CN106655938A (en) | Permanent magnet synchronous machine control system and permanent magnet synchronous machine control method based on high-order sliding mode method | |
| US9621091B2 (en) | Method and system for controlling an automotive vehicle three-phase electric machine supplied via chopped voltages | |
| CN104300864A (en) | Decoupling control method for permanent magnet synchronous motor | |
| CN106899250A (en) | Field weakening control method, device and system and automobile for permagnetic synchronous motor | |
| CN110690837A (en) | Motor control method and system based on vector control system and storage medium | |
| CN112332728A (en) | Flux weakening control system and method | |
| CN113676095B (en) | Current cooperative control method of electric excitation doubly salient motor driving and charging integrated system | |
| JPH1094298A (en) | Vector control method for synchronous motor | |
| Xie et al. | The optimal speed-torque control of asynchronous motors for electric cars in the field-weakening region based on the RFR | |
| CN107733308B (en) | Weak magnetic control method and device for asynchronous motor | |
| CN105703685B (en) | A kind of control system for asynchronous machine and the control method using this system | |
| Geng et al. | An improved electronic line shafting control for multimotor drive system based on sliding mode observer | |
| CN111525860A (en) | Motor maximum torque current ratio control method, device and computer readable medium | |
| CN111106775A (en) | Angle filtering method and system for permanent magnet synchronous motor | |
| CN110581678A (en) | Motor control method, motor control device, electric equipment and storage medium | |
| Guowei et al. | Control system of synchronous reluctance motor based on fuzzy PI | |
| CN117175987A (en) | Voltage angle control weak magnetic speed expansion method of reluctance auxiliary permanent magnet synchronous motor | |
| CN108551283B (en) | Control method and system of permanent magnet synchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210205 |