Plenary Speech 7

Plenary  Speech 7 : Predictive Control for PMSM Drives With Small DC-Link Capacitors

Prof. Gaolin Wang received the B.S., M.S., and Ph.D. degrees in electrical engineering from Harbin Institute of Technology, Harbin, China, in 2002, 2004, and 2008, respectively. In 2009, he joined the School of Electrical Engineering and Automation, Harbin Institute of Technology as a Lecturer, where he has been a Professor since 2014. He has authored more than 150 technical papers published in journals and conference proceedings. His current major research interests include AC motor drives, position sensorless control and high-efficiency power converter. He is the recipient of the National Science Fund for Distinguished Young Scholars, Newton Advanced Fellowship. He serves as the guest editor for IEEE TIE, associate editors for IEEE TTE, IET EPA, Journal of Power Electronics, etc.

Abstract: According to the latest development of motor drives, power density, reliability and life time have become key issues which have gained more and more attentions in industry and academia. By replacing large volume electrolytic capacitors with slim film capacitors in the DC-link can increase reliability and life of motor drives, which is so-called electrolytic capacitorless motor drives. Meanwhile, the power density of the drive can increase since the capacitance is reduced to about 1/20 of the original value. This presentation focuses on the recent advancements in electrolytic capacitorless PMSM drives. Model predictive control can realize multi-objective cooperative control of the electrolytic capacitorless drives, but several challenges persist, including significant fluctuations in neutral point voltage, poor power quality on the grid side and difficulties in weight factors selection. As a new trend, the predictive control techniques can promote the application of electrolytic capacitorless PMSM drives.