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Analysis and Modeling of a Single-Power-Source T-Type 7-Level Single-Phase DC-AC Inverter with Voltage Gain of 3

Author

Listed:
  • Jenn-Jong Shieh

    (Department of Electrical Engineering, Feng Chia University, No. 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan)

  • Kuo-Ing Hwu

    (Department of Electrical Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Road, Taipei 10608, Taiwan)

  • You-Yang Li

    (Delta Electronics (Taiwan), No. 16, Dongyuan Road, Zhongli Dist., Taoyuan City 32063, Taiwan)

Abstract

This paper proposes a novel T-type 7-level single-phase DC-AC inverter having a single input power source, self-balancing, and voltage gain of 3 along with low total harmonic distortion (THD). Since the structure of the proposed 7-level DC-AC inverter is symmetrical, the interchangeability of mass production can be easily achieved. In addition, because only one switch works for all time, the switch has quite low switching loss and voltage stress as well as the control being very easy. Furthermore, not only the proposed 7-level DC-AC inverter is analyzed in detail by the operating principle, but also the mathematical model for the adopted level-shift sinusoidal pulse width modulation (LS-SPWM) for this multilevel DC-AC inverter is successfully developed by using the well-known state averaging technique widely employed in the DC-DC converter. As a result, the required proportional-integral (PI) controller, used in the closed loop, can be designed systematically and easily. Eventually, the feasibility and effectiveness of the proposed inverter are verified by simulated and experimental results.

Suggested Citation

  • Jenn-Jong Shieh & Kuo-Ing Hwu & You-Yang Li, 2022. "Analysis and Modeling of a Single-Power-Source T-Type 7-Level Single-Phase DC-AC Inverter with Voltage Gain of 3," Energies, MDPI, vol. 15(21), pages 1-26, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:7894-:d:951993
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    References listed on IDEAS

    as
    1. Jenn-Jong Shieh & Kuo-Ing Hwu & You-Yang Li, 2022. "A Single-Voltage-Source Class-D Boost Multi-Level Inverter with Self-Balanced Capacitors," Energies, MDPI, vol. 15(11), pages 1-15, June.
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    Cited by:

    1. Jenn-Jong Shieh & Kuo-Ing Hwu & Sheng-Ju Chen, 2023. "Perspective of Voltage-Fed Single-Phase Multilevel DC-AC Inverters," Energies, MDPI, vol. 16(2), pages 1-22, January.

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    2. Jenn-Jong Shieh & Kuo-Ing Hwu & Sheng-Ju Chen, 2023. "Perspective of Voltage-Fed Single-Phase Multilevel DC-AC Inverters," Energies, MDPI, vol. 16(2), pages 1-22, January.

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