Rotor Position Estimation for Aviation Three-stage Starter/Generators in the Low-speed Region based on Pseudo-Random-Frequency Sinusoidal Injection

2021 ◽  
Author(s):  
Xu Han ◽  
Weiguo Liu ◽  
Ningfei Jiao ◽  
Xiaoke Zhang ◽  
Yuduo Zhang ◽  
...  
Keyword(s):  
Position Estimation ◽  
Low Speed ◽  
Rotor Position ◽  
Random Frequency ◽  
Rotor Position Estimation

scholarly journals Full-Speed Range Encoderless Control for Salient-Pole PMSM with a Novel Full-Order SMO

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2423 ◽  
Author(s):  
Yuanlin Wang ◽  
Xiaocan Wang ◽  
Wei Xie ◽  
Manfeng Dou
Keyword(s):  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Position Estimation ◽  
Low Speed ◽  
Rotor Position ◽  
Stator Current ◽  
Salient Pole ◽  
Start Up ◽  
Full Speed ◽  
Rotor Position Estimation

For salient-pole permanent magnet synchronous motor (PMSM), the amplitude of extended back electromotive force (EEMF) is determined by rotor speed, stator current and its derivative value. Theoretically, even at extremely low speed, the back EEMF can be detected if the current in q-axis is changing. However, it is difficult to detect the EEMF precisely due to the current at low speed. In this paper, novel full-order multi-input and multi-output discrete-time sliding mode observer (SMO) is built to detect the rotor position. With the proposed rotor position estimation technique, the motor can start up from standstill and reverse between positive and negative directions without a position sensor. The proposed method was evaluated by experiment.

Rotor Position Estimation of PMSM in Low-Speed Region and Standstill Using Zero-Voltage Vector Injection

2018 ◽  
Vol 33 (9) ◽  
pp. 7948-7958 ◽  
Author(s):  
Gaolin Wang ◽  
Junyao Kuang ◽  
Nannan Zhao ◽  
Guoqiang Zhang ◽  
Dianguo Xu
Keyword(s):  
Position Estimation ◽  
Low Speed ◽  
Rotor Position ◽  
Voltage Vector ◽  
Rotor Position Estimation ◽  
Zero Voltage
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