A High-Performance Sensorless Control Strategy Using a Permanent Magnet Synchronous Generator

doi:10.12382/bgxb.2021.0664

Abstract

Abstract: To improve the reliability of electric military special vehicles and further increase the power density of the on-board power generation system, a sensorless control strategy using a permanent magnet synchronous generator in the full speed range is proposed. The power generation system adopts a double-closed loop vector control algorithm for the voltage and current, and the working area is divided according to the rotational speed. In the low-speed area, information of the rotor position is obtained through the angle-tracking controller based on the quadrature phase locked loop. In the medium-and high-speed work area, the rotor position is obtained through the linear state observer, and the motor parameters identified by the recursive least square algorithm are used to improve the robustness of position predictions. The simulation and experimental results show that the control strategy can achieve accurate rotor position observation in the full speed range; the motor state transitions smoothly as the work area switches; the system responds quickly and stably when the load is switched on and off, ensuring the reliability of the power generation system of special vehicles.

Key words: permanentmagnetsynchronousgenerator, sensorlesscontrolstrategy, stateobserver, phaselockedloop, parameteridentification

CLC Number:

TM351

LIU Zhongyong, GUO Jing, FAN Tao, BIAN Yuanjun, MENG Liu, ZHANG Huixuan, WEN Xuhui. A High-Performance Sensorless Control Strategy Using a Permanent Magnet Synchronous Generator[J]. Acta Armamentarii, 2022, 43(11): 2761-2772.

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