Abstract

Abstract When AC lines are used to supply DC loads, conventionally a rectifier and a DC chopper or a controlled rectifier are used. In many cases, a transformer is available for isolation purposes and also for matching the maximum DC load voltage requirements. When the conventional methods are used for the power control, line power factor deteriorates. A new chopper to improve the line power factor and which is free from commutation problems is developed and is presented in this paper. Experimental verification of the basic principles involved are carried out.

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