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A Switching Frequency Optimized Space Vector Pulse Width Modulation (SVPWM) Scheme for Cascaded Multilevel Inverters

Author

Listed:
  • Xiongmin Tang

    (School of Automation, Guangdong University of Technology, Guangzhou 510006, China)

  • Junhui Zhang

    (School of Automation, Guangdong University of Technology, Guangzhou 510006, China)

  • Zheng Liu

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410004, China)

  • Miao Zhang

    (School of Automation, Guangdong University of Technology, Guangzhou 510006, China)

Abstract

This paper presents a novel switching frequency optimized space vector pulse width modulation (SVPWM) scheme for cascaded multilevel inverters. The proposed SVPWM is developed in a α′β′ coordinate system, in which the voltage vectors have only integer entries and the absolute increment of coordinate values between adjacent vectors is equal to dc-bus voltage of power cells (1 pu). The new SVPWM scheme is built with three categories of switching paths. During each switching path, the change of one phase voltage is limited in 1 pu. This contributes to decrease the number of commutations of switches. The proposed SVPWM scheme is validated on a 7-level cascaded inverter and the results show that it significantly outperforms traditional SVPWM schemes in terms of decreasing the number of switch commutations.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:5:p:725-:d:99301
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    References listed on IDEAS

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    1. Ravikant Pandey & Ravi Nath Tripathi & Tsuyoshi Hanamoto, 2017. "Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM," Energies, MDPI, vol. 10(3), pages 1-19, March.
    2. Xin-Jian Cai & Zhen-Xing Wu & Quan-Feng Li & Shu-Xiu Wang, 2015. "Phase-Shifted Carrier Pulse Width Modulation Based on Particle Swarm Optimization for Cascaded H-bridge Multilevel Inverters with Unequal DC Voltages," Energies, MDPI, vol. 8(9), pages 1-18, September.
    3. Majid Mehrasa & Edris Pouresmaeil & Sasan Zabihi & Juan C. Trujillo Caballero & João P. S. Catalão, 2016. "A Novel Modulation Function-Based Control of Modular Multilevel Converters for High Voltage Direct Current Transmission Systems," Energies, MDPI, vol. 9(11), pages 1-14, October.
    4. Miguel Moranchel & Francisco Huerta & Inés Sanz & Emilio Bueno & Francisco J. Rodríguez, 2016. "A Comparison of Modulation Techniques for Modular Multilevel Converters," Energies, MDPI, vol. 9(12), pages 1-20, December.
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    Cited by:

    1. Lei Wang & Qinghua Wu & Wenhu Tang, 2017. "Energy Balance Control of a Cascaded Multilevel Inverter for Standalone Solar Photovoltaic Applications," Energies, MDPI, vol. 10(11), pages 1-17, November.
    2. 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.

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