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A Novel DC/3AC Converter Topology with reduced Component Effort

A Novel DC/3AC Converter Topology with reduced Component Effort
Autor:

Christian Axtmann, Johannes Kolb, Michael Braun

Quelle:

43rd Annual Conference of the IEEE Industrial Electronics Society (IECON)

Datum: 29. October - 1. November 2017, Beijing, China

Abstract

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.