TY - JOUR
T1 - Self-Calibration of Phase Current Sensors with Sampling Errors by Multipoint Sampling of Current Values in a Single PWM Cycle
AU - Lu, Jiadong
AU - Hu, Yihua
AU - Liu, Jinglin
AU - Wen, Huiqing
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2021/4
Y1 - 2021/4
N2 - The accuracy of current sensors is most crucial for the performance of an interior permanent magnet synchronous motor (IPMSM) drive. However, it may have sampling errors that are unavoidable for an actual drive. Therefore, to cope with this problem, in this article, a self-calibration strategy for phase-current sensors is proposed by utilizing the proposed topology and the correlation among the multiple current values obtained by current sampling values during one single pulsewidth modulation cycle, making minor changes for the cablings of the conventional current sensors in the premise of not affecting the normal operation of the drive, and abandoning complex observers or filters for easing the computational burden. Besides, its effectiveness was verified by the experimental results on a 5-kW IPMSM motor prototype, which showed that such sampling errors could be well estimated and eliminated.
AB - The accuracy of current sensors is most crucial for the performance of an interior permanent magnet synchronous motor (IPMSM) drive. However, it may have sampling errors that are unavoidable for an actual drive. Therefore, to cope with this problem, in this article, a self-calibration strategy for phase-current sensors is proposed by utilizing the proposed topology and the correlation among the multiple current values obtained by current sampling values during one single pulsewidth modulation cycle, making minor changes for the cablings of the conventional current sensors in the premise of not affecting the normal operation of the drive, and abandoning complex observers or filters for easing the computational burden. Besides, its effectiveness was verified by the experimental results on a 5-kW IPMSM motor prototype, which showed that such sampling errors could be well estimated and eliminated.
KW - Current sampling error
KW - drive
KW - error compensation
KW - interior permanent magnet synchronous motor (IPMSM)
KW - inverter
KW - self-calibration
UR - http://www.scopus.com/inward/record.url?scp=85097955894&partnerID=8YFLogxK
U2 - 10.1109/TIE.2020.2982110
DO - 10.1109/TIE.2020.2982110
M3 - Article
AN - SCOPUS:85097955894
SN - 0278-0046
VL - 68
SP - 2942
EP - 2951
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 4
M1 - 9047152
ER -