级联多电平变换器的CPSPWM可重构控制研究

2021 International Conference on Information Technology and Biomedical Engineering (ICITBE) Pub Date : 2021-12-01 DOI:10.1109/ICITBE54178.2021.00043

Fei Lv, Mian Wang, Songtao Zhang

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引用次数: 0

摘要

多电平变换器的可靠性是衡量器件优劣的一个重要指标。采用故障单元旁路技术可以提高级联多电平变换器的可靠性。分析了级联多电平变换器的可重构路径，推导了中性位移重构技术和参数计算公式，提出了基于中性位移的载波相移脉宽调制(CPSPWM)方法。对CPSPWM可重构控制进行了两种情况下的仿真，包括三相级联11电平变换器的正常情况和单元故障情况。仿真结果验证了控制策略的正确性。

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Research on CPSPWM Reconfigurable Control of Cascaded Multilevel Converter

An important performance measure of a device's merit is the reliability of the multilevel converter. The reliability of cascaded multilevel converters can be improved by using fault unit bypass techniques. In this paper, reconfigurable paths of cascaded multilevel converters are analyzed, neutral shift reconfiguration techniques and formulas for calculating parameters are derived, and a carrier phase shift pulse width modulation (CPSPWM) method based on neutral shift is presented. Simulations of the CPSPWM reconfigurable control are carried out in two cases, including the normal case of a three-phase cascaded 11-level converter and the case of a unit failure. The correctness of the control strategy is derived from the simulation results.

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2021 International Conference on Information Technology and Biomedical Engineering (ICITBE)

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