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An Improved Autonomous Current-Fed Push-Pull Parallel-Resonant Inverter for Inductive Power Transfer System

Author

Listed:
  • Anning Yu

    (School of Microelectronics and Communication Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, China
    Chongqing Engineering Laboratory of High Performance Integrated Circuits, Chongqing 400044, China)

  • Xiaoping Zeng

    (School of Microelectronics and Communication Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, China
    Chongqing Engineering Laboratory of High Performance Integrated Circuits, Chongqing 400044, China)

  • Dong Xiong

    (School of Microelectronics and Communication Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, China)

  • Mi Tian

    (School of Microelectronics and Communication Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, China
    Chongqing Engineering Laboratory of High Performance Integrated Circuits, Chongqing 400044, China)

  • Junbing Li

    (School of Microelectronics and Communication Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400044, China
    Chongqing Engineering Laboratory of High Performance Integrated Circuits, Chongqing 400044, China)

Abstract

In the inductive power transfer (IPT) system, it is recommended to drive the resonant inverter in zero-voltage switching (ZVS) or zero-current switching (ZCS) operation to reduce switching losses, especially in dynamic applications with variable couplings. This paper proposes an improved autonomous current-fed push-pull parallel-resonant inverter, which not only realizes the ZVS operation by tracking the zero phase angle (ZPA) frequency, but also improves the output power and overall efficiency in a wide range by reducing gate losses and switching losses. The ZPA frequencies characteristic of the parallel-parallel resonant circuit in both bifurcation and bifurcation-free regions is derived and verified by theory and experiments, and the comparative experimental results demonstrate that the improved inverter can significantly increase the output power from 7.68 W to 8.74 W and has an overall efficiency ranging from 63.5% to 72.5% compared with the traditional inverter at a 2 cm coil distance. Furthermore, with a 2-fold input voltage (24 V), the improved inverter can achieve an approximate 4-fold output power of 38.9 W and overall efficiency of 83.6% at a 2 cm coil distance.

Suggested Citation

  • Anning Yu & Xiaoping Zeng & Dong Xiong & Mi Tian & Junbing Li, 2018. "An Improved Autonomous Current-Fed Push-Pull Parallel-Resonant Inverter for Inductive Power Transfer System," Energies, MDPI, vol. 11(10), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2653-:d:173764
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    References listed on IDEAS

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    1. Mohamed Saad & Eduard Alarcón, 2018. "Insights into Dynamic Tuning of Magnetic-Resonant Wireless Power Transfer Receivers Based on Switch-Mode Gyrators," Energies, MDPI, vol. 11(2), pages 1-23, February.
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    Cited by:

    1. Jing-Yuan Lin & Yi-Feng Lin & Sih-Yi Lee, 2019. "A Novel Multi-Element Resonant Converter with Self-Driven Synchronous Rectification," Energies, MDPI, vol. 12(4), pages 1-10, February.

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