Zero-Sequence-Component-Based Rotor Position Estimation for a Wound-Field Synchronous Starter/Generator in the Low-Speed Region

Author(s):  
Xiaoke Zhang ◽  
Weiguo Liu ◽  
Ningfei Jiao ◽  
Xu Han ◽  
Yukun Fan ◽  
...  
Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2423 ◽  
Author(s):  
Yuanlin Wang ◽  
Xiaocan Wang ◽  
Wei Xie ◽  
Manfeng Dou

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.


2018 ◽  
Vol 13 (7) ◽  
pp. 833-842
Author(s):  
Yujie Zhu ◽  
Weiguo Liu ◽  
Jichang Peng ◽  
Tao Meng ◽  
Ningfei Jiao

2018 ◽  
Vol 2018 (13) ◽  
pp. 576-580 ◽  
Author(s):  
Yujie Zhu ◽  
Weiguo Liu ◽  
Tao Meng ◽  
Jichang Peng ◽  
Ningfei Jiao

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