Design and realization of dual redundancy PMSM electrical drive systems

A dual redundancy electrical mechanic actuator designed for high-performance and high-reliable aero electrical drive systems is studied in this paper. The dual redundancy system contains two coaxial permanent magnet synchronous motors (PMSM), two independent power converters with intelligent power modules (IPM) and two position sensors. In the dual redundancy vector control, a novel space vector pulsewidth modulation (SVPWM) algorithm is proposed, which can improve the real-time performance of software implementation. Dynamic response experiments and fault switching experiments show that the dual redundancy drive system can achieve fast dynamic response and high reliability. The coaxial dual redundancy PMSM drive system is one of important implementations for aero electrical transmission systems.