A Novel Discontinuous PWM Method With Hybrid Three-Step Commutation to Reduce Common-Mode Voltage for Direct Matrix Converter
Sahel Solemanifard,
Cheng-Chin Hu,
Tzung-Lin Lee
et al.
Abstract:The conventional discontinuous PWM (DPWM) can provide several advantages in a direct matrix converter (DMC), such as less switching number and less execution time for modulation signals' calculation. However, it suffers from high common-mode voltage (CMV), which may cause damage to the DMC-based system. This paper proposes a novel DPWM method to not only mitigate common-mode voltage (CMV) but also further improve the conversion efficiency. In this method, the switching sequence is obtained in a new way using t… Show more
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