Analysis and Design of a Novel Interleaved Boost Converter with Zero-Voltage-Switching and Zero-Current-Switching Characteristics

• Main Authors: Shin-Ming Shiu, 徐新明
• Other Authors: Yie-Tone Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/80314328637175630676

碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 97 === A novel interleaved boost converter with zero voltage switching (ZVS) and zero current switching (ZCS) characteristics is proposed in this thesis. This topology is suitable for the applications of high output voltage and low output current. A prototype converter circuit is given for 150V~250V input voltage and 400V with 200W to 600W output. By the interleaved approach, this topology not only decreases the current stress of the main circuit device but also reduces the ripple of the input current and output voltage. Moreover, by establishing the common soft-switching module, the soft-switching interleaved converter can greatly reduce the size and cost. The main switches can achieve the characteristics of ZVS and ZCS simultaneously to reduce the switching loss and improve the efficiency for wide load range. This topology has two operation conditions if the duty cycle can exceed 50%. The converter should have a resonant path to accomplish ZVS or ZCS in different conditions. A driving circuit design for the proposed topology determines the two conditions automatically according to the overlap condition of the duty cycles of the two switches. The driving signal of the soft-switching module is composed of the ZVS driving signal and the overlap driving signal of the two switches to achieve the functions of ZVS and ZCS. The operational principle, theoretical analysis and design method of the proposed converter are presented. Simulation and experimental results are finally used to verify the feasibility and exactness of the proposed converter.