TY - GEN
T1 - Online Estimation of DC-Link Capacitance for Permanent Magnet Synchronous Motor Drive with Reduced DC-Link Capacitor
AU - Zhou, Bingqi
AU - Wang, Gaolin
AU - Gao, Runfeng
AU - Zhang, Guoqiang
AU - Zhao, Nannan
AU - Xu, DIanguo
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/10/13
Y1 - 2021/10/13
N2 - In order to avoid the failure of electrolytic capacitor due to the influence of ambient temperature, film capacitors are applied in the DC-link of permanent magnet synchronous motor (PMSM) drive systems. In this paper, an online estimation method of DC-link capacitance is proposed for the electrolytic capacitorless motor drive system. The power signals of the drive system are analyzed, and the characteristic frequency of the DC-link capacitance power is determined. The instantaneous capacitor power is obtained by the sampled grid input power and the reconstructed inverter power, which is determined by the DC-link voltage and inverter input current. The components of capacitor power and the result of multiplication of DC-link voltage and its derivative at the expected frequency are obtained to calculate the DC-link capacitance by a band-pass filter. The estimation process can be carried out when the system operates normally, and no additional sensors are required. The experimental results verify the effectiveness of the proposed method.
AB - In order to avoid the failure of electrolytic capacitor due to the influence of ambient temperature, film capacitors are applied in the DC-link of permanent magnet synchronous motor (PMSM) drive systems. In this paper, an online estimation method of DC-link capacitance is proposed for the electrolytic capacitorless motor drive system. The power signals of the drive system are analyzed, and the characteristic frequency of the DC-link capacitance power is determined. The instantaneous capacitor power is obtained by the sampled grid input power and the reconstructed inverter power, which is determined by the DC-link voltage and inverter input current. The components of capacitor power and the result of multiplication of DC-link voltage and its derivative at the expected frequency are obtained to calculate the DC-link capacitance by a band-pass filter. The estimation process can be carried out when the system operates normally, and no additional sensors are required. The experimental results verify the effectiveness of the proposed method.
KW - Permanent magnet synchronous motor drive system
KW - current reconstruction
KW - online capacitance estimation
KW - reduced DC-link capacitance
UR - https://www.scopus.com/pages/publications/85119477626
U2 - 10.1109/IECON48115.2021.9589375
DO - 10.1109/IECON48115.2021.9589375
M3 - 会议稿件
AN - SCOPUS:85119477626
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021
Y2 - 13 October 2021 through 16 October 2021
ER -