Asynchronous Motor without Speed Sensor Vector Control Based on MRAS

2019 ◽  
Author(s):  
Li Haixia ◽  
Huang Zhiyong ◽  
Lin Jican ◽  
Li Geng
Keyword(s):  
Vector Control ◽  
Asynchronous Motor ◽  
Speed Sensor

scholarly journals Research on Speed Sensorless Vector Control System of Asynchronous Motor Based on MRAS

2018 ◽  
Vol 160 ◽  
pp. 02006
Author(s):  
Zili Liao ◽  
Qijin Zhao ◽  
Xinxi Zhang ◽  
Luming Chen
Keyword(s):  
Control System ◽  
Vector Control ◽  
Asynchronous Motor ◽  
Speed Sensorless ◽  
Speed Sensor ◽  
Sensorless Vector Control ◽  
Static Performance ◽  
Vector Control System ◽  
Hysteresis Control ◽  
Model Reference Adaptive

This paper analysed the basic principle of speed sensorless vector control system. Based on speed and current closed loop vector control, combined with a simple and feasible current hysteresis control strategy, the whole speed sensorless system of asynchronous motor is simulated in MATLAB/Simulink. The method uses the Model Reference Adaptive System (MRAS). The observation and analysis of waveform shows that the system has good static performance and robustness. The control effects are also as similar as the vector control system which contains speed sensor.

Research of Vector Control for Asynchronous Motor System Based on MRAS

2012 ◽  
Vol 531-532 ◽  
pp. 769-772 ◽  
Author(s):  
Qing Hua Yao ◽  
Miao Cao
Keyword(s):  
Motor Control ◽  
Vector Control ◽  
Motor System ◽  
Asynchronous Motor ◽  
Performance Simulation ◽  
Speed Sensor ◽  
Torque Curve ◽  
Electric Equipment ◽  
Adjustment System ◽  
Speed Adjustment

A new speed-adjustment approach of vector control for asynchronous motor is presented in the paper based on MRAS, It adopts a rotate speed calculating module which is designed specifically replaced Conventional rotate speed detecting system. The approach overcomes some shortcomings that comes from the precision and installation of rotate speed sensor. Motor rotate speed and torque curve are observed under different parameters based on MATLAB, and are analysed statically and dynamically. Simulation result showed touque ripple of this speed-adjustment system is small and timing is smooth, which can satisfy the demand of most electric equipment for speed-adjustment performance. Simulation result can realize asynchronous motor Control effectively.

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