期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 3, 页码 2471-2475出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3015103
关键词
DC– DC power converters; power transformers; high-voltage techniques; output feedback
资金
- Korea Electrotechnology Research Institute Primary Research Program through the National Research Council of Science and Technology (NST) - Ministry of Science and ICT (MSIT) [20A01015]
- National Research Council of Science & Technology (NST), Republic of Korea [20A01015] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This letter proposes a high output voltage dc-dc converter topology with series stacked converter modules, focusing on output voltage balancing and simplification of the control circuitry as major design objectives. A split-secondary transformer winding structure and distributed connections to the rectifier circuit blocks are proposed to achieve voltage balancing between the modules. This method was verified using a modular LCC resonant converter, simplifying the control circuit by using a single controller and a compact sensing circuit.
This letter proposes a high output voltage dc-dc converter topology with series stacked converter modules. To implement the proposed modular dc-dc converter structure, output voltage balancing of the modules and simplification of the control circuitry were considered the major design objectives. To achieve voltage balancing between the modules, we proposed a split-secondary transformer winding structure and distributed connections to the rectifier circuit blocks. Each transformer includes two secondary windings, with each wire pair connected to a different rectifier circuit. Consequently, one rectifier receives ac power simultaneously by sharing the secondary windings fed fromtwo different transformers. The proposed method was verified using a modular LCC resonant converter, which is widely employed in high-voltage applications. As a result, the control circuit was simplified by using a single controller to regulate the total output voltage and by applying a compact sensing circuit referenced to the output voltage of the module placed at the lowest grounding point.
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