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COMPARATIVE ANALYSIS OF MULTIPULSE AC-DC CONVERTERS IN VCIMD

M. Karthika, V.V. Vijetha Inti

Power electronic devices are non-linear loads; the non linear nature of these switching devices causes harmonic current injection into the ac mains there by polluting the Power Quality (PQ) at the Point of Common Coupling (PCC). This PQ improvement is achieved by using multi-pulse converters in THREE-PHASE AC-DC Converters (ADCs). The proposed multi-pulse ac-dc converter is based on autotransformer configurations and is able to eliminate lower order harmonics in the ac supply current. This paper describes the comparative analysis of different types of multipulse converters in vector controlled induction motor drives (VCIMD). The proposed multi-pulse ac-dc converter is designed and the simulation model is developed in MATLAB.