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A fast voltage balance curve of duty cycle distribution for cascaded rectifier stage based on two dimensional modulation

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4 Author(s)
Guopeng Zhang ; Sch. of Mech. Electron. Inf. Eng., China Univ. of Min. & Technol. (Beijing), Beijing, China ; Hong Cheng ; Long Cheng ; Cong Wang

A novel two dimensional modulation strategy for cascaded rectifier stage in a novel generation power converter without line-frequency transformer is introduced by this paper. A fast voltage balance curve of duty cycle distribution is proposed. Experiment results indicate that this proposed strategy can balance the DC-link voltages of each module for cascaded rectifier stage much better, improve system anti-disturbance ability, as well as realize the unity power factor in rectifier stage.

Published in:

Power Engineering and Automation Conference (PEAM), 2011 IEEE  (Volume:1 )

Date of Conference:

8-9 Sept. 2011