Interleaved series input parallel output forward converter with simplified voltage balancing control
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Kroics, Kaspars; Sokolovs, Alvis; Sirmelis, Ugis; Grigans, Linards (Riga Technical University Cesis Branch, Latvia)
Abstract:
The interleaved multilevel DC-DC converters have advantages of low voltage stress of the switches and diodes and reduction of filter size. Particularly series input parallel output (ISOP) configuration is well suited for high output voltage and large output current application. While multilevel topology offers many new features, it also necessitates a balance control of the input capacitors. The paper discusses design of the ISOP DC-DC converter with independent capacitor voltage balancing. The paper describes the operating principles of the balancing circuit, analyzes the fundamental relationships, introduces with control principles and experimental results based on a 3 kW prototype with 600 V input voltage and 30 V 100A output.