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| Stray Capacitances Influences and Windings Layout of the Integrated-Transformer in the Input-Series Converter |
| Meng Tao1, An Yanhua1, Ben Hongqi2 |
1. College of Mechanical Engineering Heilongjiang University Harbin 150080 China;
2. College of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150001 China |
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Abstract The input-series converters based on transformer-integration have the advantages of active input voltage sharing of each series-module and simple structure, which are suitable for high-input voltage multiple-output applications. In the high voltage applications, these converters can be affected seriously by the energy stored in their integrated-transformers’ stray capacitances. Taking this type of input-series two-transistor flyback converter as the object, the influence of the integrated-transformer’s stray capacitances was investigated. Energy storage of stray capacitances in the primary windings of the integrated-transformer was analyzed, and a winding layout scheme of the integrated-transformer was proposed to suppress the influence of stray capacitances. Finally, experiments were carried out on an experimental prototype of this type of input-series converter, which verified the theoretical analysis and feasibility of the proposed scheme.
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Received: 30 June 2020
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2021, Vol. 36 
