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1699 / 2020-09-29 17:52:02
Power Balance Strategy of Diode Clamped H-Bridge Cascade Multilevel Inverter
Cascade multilevel inverter,Power balance
Power Electronics Technology and Application > Control, modeling and optimization of power converter
终稿
Zhongwei Chen / Hunan Key Laboratory of Energy Internet Supply-demand and Operation；the State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Yang Leng / the State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Yun Zhang / State Grid Hunan Electric Power Company Limted
Haotian Liu / State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Yefan Wu / State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Yichao Wang / State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Pancheng Qiu / State Grid Heshan Electric Power Supply Branch,Yiyang
Zhongwei Chen / State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute
Abstract -- In the cascaded neutral point clamped (NPC) H-bridge multilevel inverter system, power balance between modules has attracted more and more attention. This paper proposes a hybrid modulation strategy based on analyzing the quantitative relationship between output power and RMS of the output voltage of the module under conventional carrier level-shifted PWM modulation strategy. The strategy combines the carrier disposition modulation strategy and phase shift  modulation strategy, which not only guarantees the balance of output power of each module, but also improves the equivalent switching frequency of output voltage, as a result, both the size and the cost of the output filter are reduced. The simulation waveforms and comparative analysis under different modulation strategies and modulation indexes are given. Finally, a 1kW experimental prototype is built, and the experimental results verifies that the proposed modulation strategy can


effectively solve the power balance problem between different modules in cascade system.
重要日期

  • 会议日期

    11月02日

    2020

    至

    11月04日

    2020

  • 10月27日 2020

    初稿截稿日期

  • 11月03日 2020

    报告提交截止日期

  • 11月04日 2020

    注册截止日期

  • 11月17日 2020

    终稿截稿日期

主办单位
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
承办单位
Huazhong University of Science and Technology
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