Performance comparison of three types of PWM techniques for a Five-phase PMSM with a single-phase open circuited
2021
The work looks at the feasible PWM techniques for a five-phase Permanent Magnet Synchronous Motor ( $5\mathrm{\Phi}$ -PMSM) with a single-phase open-circuited. The $5\mathrm{\Phi}$ -PMSM particularly suits the long travel segment-powered linear motor application largely thanks to its high thrust and good fault-tolerant capacity. Before enabling these advantages in the context of the linear movement, one fundamental issue regarding the fault-tolerant PWM technique is worth an in-depth discussion. In light of this, this paper develops three types of PWM techniques, i.e., sinusoidal PWM (SPWM), space vector PWM (SVPWM), and min-max carrier-based PWM (min-max CBPWM), such that the faulty motor drive can well accommodate the state-of-the-art fault-tolerant field-oriented control (FOC) philosophy. Merits and demerits in terms of DC voltage utilization, harmonic current content, and complexity are comparatively studied via simulation.
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