Single phase to three phase power conversion using reduced rated inverters

An attractive feature of grid interactive single-phase to three-phase converters is the ability to deliver a fraction of total load power directly from the source. A fixed frequency single-phase to three-phase converter is explored in this paper which reduces the size and cost of the system, and results in better efficiency. This paper proposes control strategy for a three leg single-phase to three-phase converter with active front end converter that leads to reduced converter rating and improved the dc bus utilization. The proposed approach reduces the current rating required by the front end converter by 50%. The results are validated on a laboratory power converter prototype.