Sensorless Control of Permanent Magnet Synchronous Motor in Full Speed Range
[1]Zhang Zhen,Shen Xueke,Cheng Xin.Sensorless Control of Permanent Magnet Synchronous Motor in Full Speed Range[J].Journal of Zhengzhou University (Engineering Science),2019,40(02):38-43.[doi:10.13705/j.issn.1671-6833.2019.02.019]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
40
Number of periods:
2019 02
Page number:
38-43
Column:
Public date:
2019-03-19
- Title:
- Sensorless Control of Permanent Magnet Synchronous Motor in Full Speed Range
- Keywords:
- permanent magnet synchronous motor; Extended Kalman filter; Position sensorless control; High frequency signal injection
- CLC:
- -
- Abstract:
- The traditional extended Kalman filter algorithm has been widely used in permanent magnet synchronous motor position sensorless control system. This method has good dynamic performance, but it still has problems in estimating the accuracy of rotor speed and position, especially During motor startup and low speed operation, due to the small induced potential, the extended Kalman algorithm has large deviations in the estimation of rotor speed and position. In order to solve this problem, this paper designs a comp osite detection method that combines the extended Kalman filter algorithm with high-frequency signal injection method. The Kalman filter method is used in medium and high speed, and the high frequency signal injection method is used in zero speed and low speed. The transition area is designed with a special algorithm that fuses the two methods to achieve full sensorless high-precision control in the full-speed domain. Finally, the simulation results show that the permanent magnet synchronous motor sensorless vector control system based on this hybrid detection algorithm has the advantages of fast dynamic adjustment, good robustness and so on.
- References:
- -
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Last Update:
2019-03-24
