TY - GEN
T1 - Discrete current regulator design with sensorless drive for high-speed permanent magnet synchronous machine
AU - Liang, Yang
AU - Liang, Deliang
AU - Jia, Shaofeng
AU - Chu, Shuaijun
AU - Liang, Yongtao
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/8/23
Y1 - 2020/8/23
N2 - The high-speed electric machine has been widely used in uninterruptible power supplies, wind power plants, rail transits and hybrid vehicles due to the high power density and fast dynamic response. However, the dynamic characteristics of the current loop will deteriorate with the increase of the speed, and it is difficult for sensorless control methods to operate reliably under low frequency modulation index. Therefore, discrete current regulator and super-twisting sliding mode observer (ST-SMO) are proposed in this paper. The directly discrete model of permanent magnet synchronous machine (PMSM) is analyzed firstly in complex-coefficient. On this basis, using the zero point of the current regulator to eliminate the poles of the controlled object, the discrete current regulator is designed with the compensation of the inherent digital delay in controller. Then, the structural equation of discrete ST-SMO sensorless control method is expounded. In addition, a comparison between discrete ST-SMO and continuous ST-SMO is carried out. Finally, the proposed control strategy in this paper is verified by simulation results.
AB - The high-speed electric machine has been widely used in uninterruptible power supplies, wind power plants, rail transits and hybrid vehicles due to the high power density and fast dynamic response. However, the dynamic characteristics of the current loop will deteriorate with the increase of the speed, and it is difficult for sensorless control methods to operate reliably under low frequency modulation index. Therefore, discrete current regulator and super-twisting sliding mode observer (ST-SMO) are proposed in this paper. The directly discrete model of permanent magnet synchronous machine (PMSM) is analyzed firstly in complex-coefficient. On this basis, using the zero point of the current regulator to eliminate the poles of the controlled object, the discrete current regulator is designed with the compensation of the inherent digital delay in controller. Then, the structural equation of discrete ST-SMO sensorless control method is expounded. In addition, a comparison between discrete ST-SMO and continuous ST-SMO is carried out. Finally, the proposed control strategy in this paper is verified by simulation results.
KW - Complex coefficient
KW - Decoupling of the current regulator
KW - Discrete-time model of PMSM
KW - Low frequency modulation index
KW - Sensorless control
UR - https://www.scopus.com/pages/publications/85098649878
U2 - 10.1109/ICEM49940.2020.9270984
DO - 10.1109/ICEM49940.2020.9270984
M3 - 会议稿件
AN - SCOPUS:85098649878
T3 - Proceedings - 2020 International Conference on Electrical Machines, ICEM 2020
SP - 2413
EP - 2418
BT - Proceedings - 2020 International Conference on Electrical Machines, ICEM 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 International Conference on Electrical Machines, ICEM 2020
Y2 - 23 August 2020 through 26 August 2020
ER -