Extended Delta Based 15-Phase AC-DC Converter for Variable Frequency Induction Motor Drives
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Vipin Garg
This paper presents the design and analysis of a multi-phase ac-dc converter system for harmonic reduction at the point of common coupling (PCC) in vector controlled induction motor drives (VCIMD's). The design of the proposed 3-phase to 15-phase autotransformer is presented along with the VCIMD. The proposed 15-phase ac-dc converter is found capable of suppressing up to the 29th harmonic in the supply current, along with the power factor improvement close to unity in the wide operating range of the drive. The effect of load variation on VCIMD is also studied to demonstrate the effectiveness of the proposed ac-dc converter. A set of power quality indices on input ac mains and on dc bus for a VCIMD fed from existing 6-pulse and proposed 15-phase ac-dc converters are also given to compare their performance.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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- Identification of External Power System Linear Dynamic Equivalents as MIMO Feedback Blocks for the Study System
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