Byeong-Gyu Kang, “철도차량용 매입형 영구자석 동기 전동기의 넓은 속도 영역에서 센서리스 제어에 관한 연구,” 아주대학교 공학석사 학위 논문, 2018. > Paper

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Paper

Thesis Byeong-Gyu Kang, “철도차량용 매입형 영구자석 동기 전동기의 넓은 속도 영역에서 센서리스 제어에 관한 연구,” 아주대학교 공학석사 학위 논문, 2018.

2018

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This paper presents the sensorless control of interior permanent magnet synchronous motor (IPMSM) for the wide-speed-range

operation of railway traction motors. For the low speed range, a continuous high frequency signal injection is applied to the motor to

extract the rotor position by the signal processing method using the measure axis. For the middle and high speed range, the rotor

position is estimated by using the disturbance observer based on the extended back electro-motive-force (EEMF) model. The previous

transition algorithm between two speed ranges is carried out at a specific operation point for the wide-speed-range operation. Such

transition algorithm, however, could change the speed transition point due to the parameter variations of IPMSM and occur the speed

overshoot during the load changes. Therefore, this paper proposes a new and simple weighting function for the stable transition

operation between two speed ranges. The experiments are carried out to show the effectiveness of the proposed algorithm.

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