TY - JOUR
T1 - High-frequency response current direct demodulation method for sensorless control of interior permanent magnet synchronous motor drives
AU - Li, Wenzhen
AU - Liu, Jinglin
AU - Gong, Chao
N1 - Publisher Copyright:
© 2022, The Author(s) under exclusive licence to The Korean Institute of Power Electronics.
PY - 2022/5
Y1 - 2022/5
N2 - Sensorless schemes are mainly used in fault-tolerant control of interior permanent magnet synchronous motor (IPMSM) drives. Traditional sensorless methods with injection of high-frequency (HF) carrier signals into the stationary reference frame have a stable performance. However, phase shifts caused by conventional high-pass filters (HPFs) decrease the estimation accuracy. Besides, the demodulation process is usually complicated, which increases the difficulty of application. To solve these problems, this study presents an HF-induced current direct demodulation method. Rotor position angle can be solved from the sampled currents at adjacent moments without demodulation signals. Therefore, the errors related to filters in the rotor position estimation are eliminated. Besides, the efficiency of the demodulation algorithm is improved. Furthermore, an online compensation method for cross-saturation effect is proposed. Experimental results verify that the proposed strategy can obtain an accurate rotor position with good steady-state and dynamic performance.
AB - Sensorless schemes are mainly used in fault-tolerant control of interior permanent magnet synchronous motor (IPMSM) drives. Traditional sensorless methods with injection of high-frequency (HF) carrier signals into the stationary reference frame have a stable performance. However, phase shifts caused by conventional high-pass filters (HPFs) decrease the estimation accuracy. Besides, the demodulation process is usually complicated, which increases the difficulty of application. To solve these problems, this study presents an HF-induced current direct demodulation method. Rotor position angle can be solved from the sampled currents at adjacent moments without demodulation signals. Therefore, the errors related to filters in the rotor position estimation are eliminated. Besides, the efficiency of the demodulation algorithm is improved. Furthermore, an online compensation method for cross-saturation effect is proposed. Experimental results verify that the proposed strategy can obtain an accurate rotor position with good steady-state and dynamic performance.
KW - High-frequency (HF) carrier-signal injection
KW - Interior permanent magnet synchronous motor (IPMSM)
KW - Sensorless control
KW - Stationary reference frame (SRF)
UR - http://www.scopus.com/inward/record.url?scp=85126005038&partnerID=8YFLogxK
U2 - 10.1007/s43236-022-00401-5
DO - 10.1007/s43236-022-00401-5
M3 - 文章
AN - SCOPUS:85126005038
SN - 1598-2092
VL - 22
SP - 784
EP - 795
JO - Journal of Power Electronics
JF - Journal of Power Electronics
IS - 5
ER -