A novel topology is proposed that interfaces between one or multiple DC sources and a three-phase machine. The DC-side converter consists of two half-bridges that form a specialized converter. The half-bridges operate at a reduced voltage which reduces inductor effort and switching losses. The resulting four DC-link levels power two three-phase bridges that can drive open-winding machines. The circuit is analyzed and compared to the common three-phase-bridge with DC converter by means of component stress and thus component effort. Finally, closed loop control is examined, synthesized and conﬁrmed by simulation results.
A Novel DC/3AC Converter Topology with reduced Component Effort
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43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017)
|Datum:||29.10. - 01.11.2017, Beijing, China|