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Current Sharing Control of an Interleaved Three-Phase Series-Resonant Converter with Phase Shift Modulation

Author

Listed:
  • Jing-Yuan Lin

    (Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan)

  • Kuan-Hung Chen

    (Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan)

  • Pin-Hsian Liu

    (Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan)

  • Hsuan-Yu Yueh

    (Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan)

  • Yi-Feng Lin

    (Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan)

Abstract

Recently, three-phase series-resonant converters (SRCs) have been proposed for high power applications. Three-phase SRCs can achieve zero-voltage-switching (ZVS) of the primary power switches and regulate the output voltage by pulse-frequency modulation. The interleaving technique is also a conventional method for DC-DC converters to achieve a high power level, reducing the output voltage ripples due to operating out of phase at the same frequency between the two converters. However, an interleaved three-phase SRC cannot easily synchronize switching instants between the two modules due to the component tolerances of circuits. In the proposed control method, phase shift modulation (PSM) is used to solve the output current imbalance caused by component tolerances. The power switches of the converter can also maintain synchronizing switching instants between the two modules. Therefore, the lower output voltage ripple can be achieved. A detailed analysis and design of this new control method for interleaved three-phase SRCs are described. Finally, prototype converters with a 2.4 kW total output were built and successfully tested to verify the feasibility of the current sharing modulation.

Suggested Citation

  • Jing-Yuan Lin & Kuan-Hung Chen & Pin-Hsian Liu & Hsuan-Yu Yueh & Yi-Feng Lin, 2021. "Current Sharing Control of an Interleaved Three-Phase Series-Resonant Converter with Phase Shift Modulation," Energies, MDPI, vol. 14(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2470-:d:543628
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