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Harmonic mitigator based on 12-pulse ac-dc converter for switched mode power supply

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4 Author(s)
Kalpana, R. ; Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India ; Bhuvaneswari, G. ; Singh, B. ; Singh, S.

A novel harmonic mitigator based on the 12-pulse ac-dc converter, which is capable of suppressing up to 11th harmonics, is presented with reduced magnetic rating and low total harmonic distortion (THD) of ac mains current. A set of power quality indices on input ac mains and magnetic ratings for various autoconnected transformer configurations for the 12-pulse converter feeding a low voltage, high current and 12-kW switched mode power supply is also presented so that the best autoconnected transformer configuration can be chosen according to the requirements for this application. A laboratory prototype of the proposed ac-dc converter is developed and the test results are presented to validate the design and model of the converter system.

Published in:

Power Electronics, IET  (Volume:3 ,  Issue: 6 )