Sensorless Control of Permanent Magnet Synchronous Motor with Improved Sliding Mode Observer

Authors

Li Jie, Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China;
Wang Yan, Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China;
Zhicheng Ji, Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China;
Dahu Yan, Engineering Research Center of Internet of Things Technology Applications Ministry of Education,Jiangnan University, Wuxi 214122, China;

Abstract

Abstract: With the purpose of improving the performance of sensorless control system of permanent magnet synchronous motor (PMSM), an improved sliding mode observer based on stator resistance online identification is proposed. These ctional hyperbolic tangent function is adopted as switching function, combined with variable sliding mode gain to weaken the high frequency chattering. Through the use of Lyapunov stability theory, the stator resistance online identification is adapted for improving the estimation accuracy of observer. Fractional order phase-locked loop is employed to estimate the rotor position and speed information from observed back EMF so that computing complexity caused by traditional phase compensation can be effectively avoided. The experimental simulation results indicate that the improved sliding mode observer can effectively inhibit the system chattering as well as accurately estimate the information of motor speed and rotor position.

Recommended Citation

Jie, Li; Yan, Wang; Ji, Zhicheng; and Yan, Dahu (2020) "Sensorless Control of Permanent Magnet Synchronous Motor with Improved Sliding Mode Observer," Journal of System Simulation: Vol. 29: Iss. 12, Article 27.
DOI: 10.16182/j.issn1004731x.joss.201712027
Available at: https://dc-china-simulation.researchcommons.org/journal/vol29/iss12/27

First Page

3139

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201712027

Last Page

3148

CLC

TP391.9

Recommended Citation

Li Jie, Wang Yan, Ji Zhicheng, Yan Dahu. Sensorless Control of Permanent Magnet Synchronous Motor with Improved Sliding Mode Observer[J]. Journal of System Simulation, 2017, 29(12): 3139-3148.

DOI

10.16182/j.issn1004731x.joss.201712027