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首页> 外文期刊>Electric Power Components and Systems >Phase-shifted Discontinuous Pulse-Width Modulation Methods for Multi-level Inverters Operated in Over-modulation Range
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Phase-shifted Discontinuous Pulse-Width Modulation Methods for Multi-level Inverters Operated in Over-modulation Range

机译：在过调制范围内运行的多电平逆变器的相移非连续脉宽调制方法

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摘要

This article presents combinations of the generic phase-shifted pulse-width modulation method with conventional discontinuous pulse-width modulation methods operated in the over-modulation range. The treated discontinuous methods are the third harmonic injection, Depenbrock's DPWM1, and Ogasawara's DPWM2. The significant advantage of the present approach over the conventional phase disposition pulse-width modulation method is the equal power flow between the H-bridges and the improved distribution of the switching operations number between them. Furthermore, they provide improved linearity in the over-modulation range. The proposed pulse-width modulation methods are analyzed by extensive simulation results. Several aspects, such as the total harmonic distortion factor of the inverter output currents and voltages, harmonic content, frequency spectrum distribution, and switchings number, are studied.
机译：本文介绍了通用相移脉宽调制方法与在过调制范围内工作的常规不连续脉宽调制方法的组合。处理的不连续方法是三次谐波注入，Depenbrock的DPWM1和Ogasawara的DPWM2。本方法相对于传统的相位布置脉冲宽度调制方法的显着优点是H桥之间的功率流相等，并且它们之间的开关操作次数得到了改善。此外，它们在过调制范围内提供了改善的线性度。通过广泛的仿真结果对提出的脉宽调制方法进行了分析。研究了逆变器输出电流和电压的总谐波失真系数，谐波含量，频谱分布和开关次数等几个方面。

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