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Enhanced Boost Factor for Three-Level Quasi-Switched Boost T-Type Inverter

Author

Listed:
  • Duc-Tri Do

    (Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, Vietnam)

  • Vinh-Thanh Tran

    (Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, Vietnam)

  • Minh-Khai Nguyen

    (Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, Vietnam)

Abstract

A new modulation strategy has been introduced in this paper in order to enhance the boost factor for the three-level quasi-switched boost T-type inverter (3L-qSBT 2 I). Under this approach, the component rating of power devices is significantly decreased. Moreover, the use of a larger boost factor produces a smaller shoot-through current. This benefit leads to reducing the conduction loss significantly. Furthermore, the neutral voltage unbalance is also considered. The duty cycle of two active switches of a quasi-switched boost (qSB) network is redetermined based on actual capacitor voltages to recovery balance condition. Noted that the boost factor will not be affected by the proposed capacitor voltage balance strategy. The proposed method is taken into account to be compared with other previous studies. The operation principle and overall control strategy for this configuration are also detailed. The simulation and experiment are implemented with the help of PSIM software and laboratory prototype to demonstrate the accuracy of this strategy.

Suggested Citation

  • Duc-Tri Do & Vinh-Thanh Tran & Minh-Khai Nguyen, 2021. "Enhanced Boost Factor for Three-Level Quasi-Switched Boost T-Type Inverter," Energies, MDPI, vol. 14(13), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3920-:d:585665
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    References listed on IDEAS

    as
    1. Serhii Stepenko & Oleksandr Husev & Dmitri Vinnikov & Carlos Roncero-Clemente & Sergio Pires Pimentel & Elena Santasheva, 2019. "Experimental Comparison of Two-Level Full-SiC and Three-Level Si–SiC Quasi-Z-Source Inverters for PV Applications," Energies, MDPI, vol. 12(13), pages 1-17, June.
    2. Vinh-Thanh Tran & Duc-Tri Do & Van-Dung Do & Minh-Khai Nguyen, 2020. "A Three-Level DC-Link Quasi-Switch Boost T-Type Inverter with Voltage Stress Reduction," Energies, MDPI, vol. 13(14), pages 1-20, July.
    Full references (including those not matched with items on IDEAS)

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