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Bridgeless Boost Rectifier With Low Conduction Losses and Reduced Diode Reverse-Recovery Problems

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5 Author(s)
Woo-Young Choi ; Dept. of Electron. & Electr. Eng., Pohang Univ. of Sci. & Technol. ; Jung-Min Kwon ; Kim Eung-Ho ; Lee Jong-Jae
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A bridgeless boost rectifier with low conduction losses and reduced diode reverse-recovery problems is proposed for power-factor correction. The proposed boost rectifier can reduce the conduction losses and alleviate the diode reverse-recovery problems by using a coupled inductor and two additional diodes. Zero-current turn-off of the output diodes is achieved, and the reverse-recovery currents of the additional diodes are slowed down to reduce the diode reverse-recovery losses. All inductive components are realized on a single magnetic core by utilizing the leakage inductance of the coupled inductor. Furthermore, for the use of this topology in the practical design, the linear peak current mode control is employed for the proposed boost rectifier. A detailed analysis and a control strategy are presented. Experimental results for a 300-W prototype are also discussed to show the performance of the proposed boost rectifier

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:54 ,  Issue: 2 )

Date of Publication:

April 2007

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