D18.5 - Single-Phase Open-Circuit Fault-Tolerant Control of Three-Phase PMSM Drives

This paper proposes a fault-tolerant control method for a standard three-phase permanent magnet motor (PMSM) in the event of a single-phase open-circuit fault. The method for driving a three-phase PMSM from a standstill using a three-leg, two-level inverter configuration is proposed. This paper proposes a fault-tolerant control method that maintains a compact program size by simplifying the current reference calculations, allowing the control of two motors with a single microcontroller (MCU). The originalities of this paper are in generating dq-axis voltage references based on dq-axis current feedback values, thereby eliminating the need for healthy phase identification, and implementing fault-tolerant control by switching the voltage output to zero in regions where physical torque is not producible. As a result, the proposed method does not require complex processing for fault-tolerant control, that is, the proposed method is achieved by simplified software architecture. Experimental results show that 65% o