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A novel control method for light-loaded multiphase boost converter with voltage multiplier used as a front-end of a grid-connected fuel-cell generation

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5 Author(s)
Wu, X. ; Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Zhang, L. ; Shen, G. ; Xu, D.
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A method for improving the operation characteristics of the multiphase boost converter integrated with voltage multipliers is presented. The light-load problem of this converter is investigated. The critical condition to maintain a desirable operation even at light load is derived as a guide to design the converter and its control. A novel PWM control method named Alternating Phase Shift (APS) is proposed to assure the good operation even at light-load. Simulations and experimental results prove the theory and the proposed control method.

Published in:

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Date of Conference:

17-22 Sept. 2011