02-04-2010, 03:13 PM
ABSTRACT
In this paper a new single phase to three-phase converter for ac motor is proposed. The proposed converter employs only six switches and incorporates active input current haping feature, which results in sinusoidal input current at close to unity power factor. The front-end rectifier in the proposed converter permits bidirectional power flow and therefore provides for excellent regulation against fluctuations in source voltage. This feature also facilitates regenerative braking of ac motor drive. An easy to implement control strategy to maintain near unity power factor over the full operating range is detailed. Suitable design guide for the selection of filter component is presented.
