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Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction

Author

Listed:
  • Guozheng Zhang

    (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China)

  • Bingxu Wei

    (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China)

  • Xin Gu

    (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China)

  • Xinmin Li

    (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China)

  • Zhanqing Zhou

    (School of Artificial Intelligence, Tianjin Polytechnic University, Tianjin 300387, China)

  • Wei Chen

    (School of Artificial Intelligence, Tianjin Polytechnic University, Tianjin 300387, China)

Abstract

This paper presents a sector subdivision based space vector pulse width modulation (SVPWM) strategy with reduced current ripple for a three-level inverter. Using the output current ripple theory, closed-form expressions of average current ripple vectors for both continuous and discontinuous switching sequences are derived. Based on the sector and triangle distributions of conventional SVPWM strategy, each triangle is further divided into three small-regions. Then the switching sequence with the lowest magnitude of the average current ripple vector is applied in every small-region, so that the advantages of continuous pulse width modulation (CPWM) and discontinuous pulse width modulation (DPWM) under different modulation index conditions are combined to reduce the current ripple in the whole modulation range. The output performance of the proposed strategy is compared with the conventional CPWM and DPWM strategy, and experimental results verify that the proposed strategy could reduce the current ripple of three-level inverters effectively.

Suggested Citation

  • Guozheng Zhang & Bingxu Wei & Xin Gu & Xinmin Li & Zhanqing Zhou & Wei Chen, 2019. "Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction," Energies, MDPI, vol. 12(14), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2734-:d:249154
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    References listed on IDEAS

    as
    1. Antonio Ventosa-Cutillas & Pablo Montero-Robina & Francisco Umbría & Federico Cuesta & Francisco Gordillo, 2019. "Integrated Control and Modulation for Three-Level NPC Rectifiers," Energies, MDPI, vol. 12(9), pages 1-15, April.
    2. Kyoung-Pil Kang & Younghoon Cho & Myung-Hyo Ryu & Ju-Won Baek, 2018. "A Harmonic Voltage Injection Based DC-Link Imbalance Compensation Technique for Single-Phase Three-Level Neutral-Point-Clamped (NPC) Inverters," Energies, MDPI, vol. 11(7), pages 1-15, July.
    3. Manel Hammami & Gabriele Rizzoli & Riccardo Mandrioli & Gabriele Grandi, 2018. "Capacitors Voltage Switching Ripple in Three-Phase Three-Level Neutral Point Clamped Inverters with Self-Balancing Carrier-Based Modulation," Energies, MDPI, vol. 11(12), pages 1-20, November.
    4. Eun-Su Jun & Sangshin Kwak, 2018. "A Highly Efficient Single-Phase Three-Level Neutral Point Clamped (NPC) Converter Based on Predictive Control with Reduced Number of Commutations," Energies, MDPI, vol. 11(12), pages 1-28, December.
    5. Hyo-Chul In & Seok-Min Kim & Kyo-Beum Lee, 2018. "Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing," Energies, MDPI, vol. 11(6), pages 1-18, June.
    6. Yungdeug Son & Jangmok Kim, 2018. "A Novel Phase Current Reconstruction Method for a Three-Level Neutral Point Clamped Inverter (NPCI) with a Neutral Shunt Resistor," Energies, MDPI, vol. 11(10), pages 1-18, October.
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