Half-Bridge Converter with Input Current Ripple Reduction

• Main Authors: Trong Nha Quang, 廣眾雅
• Other Authors: Ching-Shan Leu
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/gp8c4q

碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === This study attempts to establish a new low input current ripple topology, namely Half-Bridge Converter with Input Current Ripple Reduction (HBC-CRR). By effectively utilizing leakage inductance of power transformer and adding a clamping capacitor, the HBC-CRR inherited the advantages of the Half-Bridge Converter (HBC) not only has low voltage stress on power devices, lossless snubbing, voltage clamping features but also remarkably reduce the input current ripple with minimum component count. Consequently, both electromagnetic interference (EMI) intensity and root mean square (RMS) value of the input current are significantly decreased. As a result, smaller input filter can be used. These characteristics make it suitable for high frequency, high efficiency, and low EMI power conversion applications. This thesis consists of operating principle, circuit analysis, design considerations, simulated results, and experimental results of the HBC-CRR with 360-440V input, 12V/20A output, and 100kHz operating frequency.