Abstract
Overvoltage caused by the reflected wave phenomenon is well known in motor drive systems with long cables, which becomes worse for Medium Voltage (MV) SiC motor drive systems. Passive dv/dt filters are widely used to alleviate this overvoltage phenomenon. This paper mustrates the passive dv/dt filter limitations for SiC MV motor drive systems. In addition, an active solution with low power loss is proposed in this paper to suppress the overvoltage resulting from the reflected wave phenomenon in SiC MV motor drives. Both simulation and experimental results are presented to validate the proposed method.
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