CN113422553A - Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor - Google Patents
Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN113422553A CN113422553A CN202110545693.2A CN202110545693A CN113422553A CN 113422553 A CN113422553 A CN 113422553A CN 202110545693 A CN202110545693 A CN 202110545693A CN 113422553 A CN113422553 A CN 113422553A
- Authority
- CN
- China
- Prior art keywords
- flux linkage
- motor
- rotor flux
- permanent magnet
- magnet synchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
-
- 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
- H02P2207/055—Surface mounted magnet motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a method for acquiring a rotor flux linkage of a surface-mounted permanent magnet synchronous motor based on data analysis, which mainly comprises the steps of algorithm initialization, analysis and calculation, cycle control, result output and the like. The method does not need complex circuit and magnetic circuit analysis, does not depend on a specific detection instrument, and has simple operation and high execution efficiency.
Description
Technical Field
The invention relates to the technical field of motor control and power electronics, in particular to a method for acquiring a rotor flux linkage of a surface-mounted permanent magnet synchronous motor.
Background
The surface-mounted permanent magnet synchronous motor has the advantages of simple control, high power density, high operating efficiency, high response speed and the like, is widely applied to the fields of industrial automation, transportation, instruments and meters and the like, and plays a great role in national economy and social production. The surface-mounted permanent magnet synchronous motor mainly comprises a circuit, a magnetic circuit, mechanical parts and the like, and each link relates to different motor parameters. Among these, rotor flux linkage is an important parameter. No matter the performance of the motor body is optimized or the operation control scheme is perfect, the rotor flux linkage needs to be accurately acquired. The parameter is typically calibrated by the manufacturer at the time of shipment, and is typically a value typical of a standard prototype. The actual parameters may deviate due to factors such as manufacturing processes, motor materials, etc. In addition, along with the change of operating conditions such as temperature, humidity, etc., the rotor flux linkage also changes.
The rotor flux linkage is obtained mainly by an analytical method, a measurement method, and the like. The former adopts means such as finite element analysis, electromagnetic field simulation and the like to comprehensively analyze a motor body according to an internal mechanism of the motor so as to obtain a rotor flux linkage; the latter measures the parameters by detecting the circuit and magnetic circuit of the motor through specific instruments according to the external characteristics of the motor and applying a certain excitation quantity if necessary. For the analytical method, the design of a motor body and the theory of electromagnetism are involved, so that the speciality is strong, and complete design data of the motor needs to be acquired; the measurement method is dependent on a specific detection instrument and has certain limitations.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for acquiring the rotor flux linkage of the surface-mounted permanent magnet synchronous motor based on data analysis, so that the method has the advantages of strong operability and wide application range.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for acquiring a surface-mounted permanent magnet synchronous motor rotor flux linkage comprises the following steps:
step 2, initializing a coefficient k, and enabling k to be 1;
step 3, setting the load torque of the motor as TLkControlling the rotating speed of the motor to a preset value omega;
step 4, obtaining motor quadrature axis current iq through coordinate transformation after the motor enters a steady state,k；
step 5, calculating the flux linkage parameter A of the current calculation pointkAs shown in formula 1;
in the formula, P is the number of magnetic pole pairs;
step 6, judging whether k is more than or equal to N; if yes, entering step 7; if not, making k equal to k +1, and entering step 3;
step 7, calculating the rotor flux linkage psi of the motorfAs shown in formula 2;
according to the method for acquiring the parameters of the permanent magnet synchronous motor based on the operation data, complicated electromagnetic analysis is not needed, a specific detection instrument is not relied on, the difficulty in acquiring the parameters is reduced, and the operability is improved.
Drawings
Fig. 1 is a logic block diagram of a method for acquiring a rotor flux linkage of a surface-mounted permanent magnet synchronous motor based on data analysis.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the application method of the present invention includes the following steps, wherein steps 1 to 2 are parameter setting and initialization, steps 3 to 5 are analysis and calculation, step 6 is loop control, and step 7 is result output.
step 2, initializing a coefficient k, and enabling k to be 1;
step 3, setting the load torque of the motor as TLkControlling the rotating speed of the motor to a preset value omega;
step 4, obtaining motor quadrature axis current iq through coordinate transformation after the motor enters a steady state,k；
step 5, calculating the flux linkage parameter A of the current calculation pointkAs shown in formula 1;
in the formula, P is the number of magnetic pole pairs;
step 6, judging whether k is more than or equal to N; if yes, entering step 7; if not, making k equal to k +1, and entering step 3;
step 7, calculating the rotor flux linkage psi of the motorfAs shown in formula 2;
the above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (3)
1. A method for acquiring a rotor flux linkage of a surface-mounted permanent magnet synchronous motor is characterized by comprising the following steps: the method comprises the following steps:
step 1, setting a plurality of load torque values { TL1、TL2、…、TLNN is the number of load torque values;
step 2, initializing a coefficient k, and enabling k to be 1;
step 3, setting the load torque of the motor as TLkControlling the rotating speed of the motor to a preset value omega;
step 4, obtaining motor quadrature axis current iq through coordinate transformation after the motor enters a steady state,k；
step 5, calculating the flux linkage parameter A of the current calculation pointk；
Step 6, judging whether k is more than or equal to N; if yes, entering step 7; if not, making k equal to k +1, and entering step 3;
step 7, calculating the rotor flux linkage psi of the motorf。
2. The method for acquiring the rotor flux linkage of the surface-mounted permanent magnet synchronous motor according to claim 1, wherein the method comprises the following steps: the flux linkage parameter A in step 5kThe calculation method is as follows:
wherein, P is the magnetic pole logarithm.
3. The method for acquiring the rotor flux linkage of the surface-mounted permanent magnet synchronous motor according to claim 1, wherein the method comprises the following steps: step 7, the rotor flux linkage psifThe calculation method is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545693.2A CN113422553A (en) | 2021-05-19 | 2021-05-19 | Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545693.2A CN113422553A (en) | 2021-05-19 | 2021-05-19 | Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113422553A true CN113422553A (en) | 2021-09-21 |
Family
ID=77712570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110545693.2A Pending CN113422553A (en) | 2021-05-19 | 2021-05-19 | Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113422553A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227024A (en) * | 2015-10-28 | 2016-01-06 | 广东美的制冷设备有限公司 | A kind of rotor flux on-line identification method and system of permagnetic synchronous motor |
| CN105915141A (en) * | 2016-05-09 | 2016-08-31 | 中国第汽车股份有限公司 | Permanent magnet synchronous motor permanent magnet linkage online measurement system and method |
| CN107689758A (en) * | 2017-09-08 | 2018-02-13 | 上海中科深江电动车辆有限公司 | Durface mounted permanent magnet synchronous electric machine torque control method |
| CN108712122A (en) * | 2018-05-29 | 2018-10-26 | 广东威灵电机制造有限公司 | The discrimination method and device for identifying of the permanent magnet flux linkage of permanent magnet synchronous motor |
| CN110504883A (en) * | 2019-09-10 | 2019-11-26 | 成都昆朋新能科技有限公司 | A kind of magnetic linkage discrimination method of permanent magnet synchronous motor |
| CN111190102A (en) * | 2020-01-08 | 2020-05-22 | 北京车和家信息技术有限公司 | Method and device for detecting motor flux linkage |
-
2021
- 2021-05-19 CN CN202110545693.2A patent/CN113422553A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227024A (en) * | 2015-10-28 | 2016-01-06 | 广东美的制冷设备有限公司 | A kind of rotor flux on-line identification method and system of permagnetic synchronous motor |
| CN105915141A (en) * | 2016-05-09 | 2016-08-31 | 中国第汽车股份有限公司 | Permanent magnet synchronous motor permanent magnet linkage online measurement system and method |
| CN107689758A (en) * | 2017-09-08 | 2018-02-13 | 上海中科深江电动车辆有限公司 | Durface mounted permanent magnet synchronous electric machine torque control method |
| CN108712122A (en) * | 2018-05-29 | 2018-10-26 | 广东威灵电机制造有限公司 | The discrimination method and device for identifying of the permanent magnet flux linkage of permanent magnet synchronous motor |
| CN110504883A (en) * | 2019-09-10 | 2019-11-26 | 成都昆朋新能科技有限公司 | A kind of magnetic linkage discrimination method of permanent magnet synchronous motor |
| CN111190102A (en) * | 2020-01-08 | 2020-05-22 | 北京车和家信息技术有限公司 | Method and device for detecting motor flux linkage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Park et al. | Cogging torque reduction of single-phase brushless DC motor with a tapered air-gap using optimizing notch size and position | |
| Zhu et al. | A simplified thermal model and online temperature estimation method of permanent magnet synchronous motors | |
| CN111666651B (en) | Demagnetizing risk assessment method for permanent magnet motor | |
| CN111208425B (en) | Method for constructing high-precision asynchronous motor system state model and asynchronous motor state detection method | |
| CN111371352A (en) | Method for characterizing a permanent magnet synchronous machine | |
| CN106712618A (en) | Method and system for identifying rotational inertia of permanent magnet synchronous motor | |
| CN113691182B (en) | Resistance identification method, system, medium and terminal of permanent magnet synchronous motor | |
| CN113422553A (en) | Method for acquiring rotor flux linkage of surface-mounted permanent magnet synchronous motor | |
| Yu et al. | Hysteresis nonlinearity modeling and position control for a precision positioning stage based on a giant magnetostrictive actuator | |
| US7774148B2 (en) | Torque estimator for IPM motors | |
| CN112202382A (en) | Permanent magnet synchronous motor parameter obtaining method based on operation data | |
| Wang et al. | Rotor temperature estimation for magnetically suspended turbo molecular PUMP based on flux linkage identification | |
| CN114157186A (en) | Electrical angle calibration method, evaluation method and system of permanent magnet synchronous motor | |
| CN115238554A (en) | Analysis method based on multi-physical-field bidirectional coupling refined modeling | |
| Gao et al. | Permanent magnet temperature estimation of high power density permanent magnet synchronous machines by considering magnetic saturation | |
| CN112636655B (en) | Method and device for calibrating zero position of permanent magnet synchronous motor | |
| CN104834330A (en) | Liquid floated pendulum type accelerometer temperature control model parameter identification method | |
| Meng et al. | A non-invasive dual-EKF-based rotor temperature estimation technique for permanent magnet machines | |
| CN109358511B (en) | Data-driven system key performance index self-adaptive adjusting method | |
| Antons et al. | Self-sensing control of a synchronous reluctance machine using an extended Kalman filter | |
| CN112202376A (en) | Linear motor active disturbance rejection control design method based on Taylor tracking differentiator | |
| Tikhonov et al. | Dynamic field model of brushed dc motor for electric drive systems research | |
| CN114006558B (en) | Motor parameter online identification method only for bill parameters | |
| Pillai et al. | Robustness analysis of position observers for permanent magnet synchronous motors vis-a-vis rotor saliency | |
| CN113541563B (en) | Angular position determining method, detecting device and storage medium for 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 |