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An Improved Modulation Strategy Combining Phase Shifted PWM and Phase Disposition PWM for Cascaded H-Bridge Inverters

Author

Listed:
  • Muxuan Xiao

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Qianming Xu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Honglin Ouyang

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

Abstract

Multilevel modulation strategy is an important factor affecting the output performance of multilevel converters. In this paper, the relationship between phase-shifted pulse width modulation (PWM) and phase disposition PWM is analyzed, and then an improved hybrid modulation strategy is proposed for cascaded H-bridge. In addition, the implementation method of multilevel discontinuous modulation for an improved modulation strategy is described. The new modulation strategy is optimized to increase the DC link voltage utilization and further improvement in output harmonics by the injection of a common voltage into the reference. Simulation and experiment verify the effectiveness of the proposed modulation strategy.

Suggested Citation

  • Muxuan Xiao & Qianming Xu & Honglin Ouyang, 2017. "An Improved Modulation Strategy Combining Phase Shifted PWM and Phase Disposition PWM for Cascaded H-Bridge Inverters," Energies, MDPI, vol. 10(9), pages 1-14, September.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:9:p:1327-:d:110699
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    References listed on IDEAS

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    1. Xiongmin Tang & Junhui Zhang & Zheng Liu & Miao Zhang, 2017. "A Switching Frequency Optimized Space Vector Pulse Width Modulation (SVPWM) Scheme for Cascaded Multilevel Inverters," Energies, MDPI, vol. 10(5), pages 1-18, May.
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    Cited by:

    1. Mei Su & Chao Luo & Xiaochao Hou & Wenbin Yuan & Zhangjie Liu & Hua Han & Josep M. Guerrero, 2018. "A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters," Energies, MDPI, vol. 11(6), pages 1-18, May.
    2. Kennedy Adinbo Aganah & Cristopher Luciano & Mandoye Ndoye & Gregory Murphy, 2018. "New Switched-Dual-Source Multilevel Inverter for Symmetrical and Asymmetrical Operation," Energies, MDPI, vol. 11(4), pages 1-13, April.
    3. Mustafa F. Mohammed & Mohammed A. Qasim, 2022. "Single Phase T-Type Multilevel Inverters for Renewable Energy Systems, Topology, Modulation, and Control Techniques: A Review," Energies, MDPI, vol. 15(22), pages 1-24, November.
    4. Felix Roemer & Massab Ahmad & Fengqi Chang & Markus Lienkamp, 2019. "Optimization of a Cascaded H-Bridge Inverter for Electric Vehicle Applications Including Cost Consideration," Energies, MDPI, vol. 12(22), pages 1-19, November.

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