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Abstract
The control of power from few watts to megawatt range is very much indeed for commercial applications.This paper presents the simulation and hardware design of three-phase ac voltage controller with star connected balanced and unbalanced loads.The unbalanced operation of the converter either may be due to loss of synchronization of pulses or load or both. The phase locked loop is used to track the frequency of the supply and generate switching pulses for thyristors so that chances of misfiring devices are less.