A Hybrid PWM-Based Field Weakening Strategy for a Hybrid-Inverter-Driven Open-Winding PMSM System

作者：Sun, Dan^*; Zheng, Zhihao; Lin, Bin; Zhou, Wenzhi; Chen, Min

来源：IEEE Transactions on Energy Conversion, 2017, 32(3): 857-865.

DOI：10.1109/TEC.2017.2676020

• Field weakening control
• hybrid-inverter
• hybrid PWM
• open-winding PMSM

This paper proposes a hybrid pulse width modulation (PWM) based field weakening control strategy for a hybrid-inverter-driven open-winding (OW) permanent magnet synchronous motor (PMSM) system. The hybrid-inverter consists of two voltage source inverters, one is connected to a dc voltage source and named as main inverter (MI), and the other is connected to a floating capacitor and called compensation inverter (CI). A novel hybrid PWM technique is proposed for the hybrid-inverter, in which a double-vector-based PWM is applied to the MI to reduce the switching frequency, and the conventional space vector PWM is applied to the CI to compensate the reactive power. Furthermore, a field weakening (FW) control strategy based on the hybrid PWM technique is proposed to better utilize the dc-link voltage and extend the operation range of the OW-PMSM system. Simulation and experimental studies are carried out to verify the high efficiency and wide speed range of the proposed strategy.

• 出版日期2017-9
• 单位浙江大学