Visualization of PWM Waveforms of Output Voltage and Input Current for a Direct Matrix Converter
Visualization of PWM Waveforms of Output Voltage and Input Current for a Direct Matrix Converter
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直接矩阵转换器输出电压和输入电流 PWM 波形的可视化
DOI：
10.1109/ipec.2014.6869569
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Takaharu Takeshita
中科院分区：
文献类型：
--
作者：
Inami Asai;Takaharu Takeshita
直接矩阵变换器的PWM策略分为直接AC/AC变换器、虚拟AC/DC/AC变换和瞬时空间矢量图。由于矩阵变换器的PWM策略很复杂，在不同的解释下可能很难理解相同的PWM策略。本文提出了可视化的PWM波形的输出电压和输入电流在输入和输出电压期间。从输出电压和输入电流的可视化波形中，可以很容易地实现几种PWM策略之间的差异和评价。从矩阵变换器占空比的基本方程出发，推导出两种PWM策略的输出电压和输入电流的可视化波形。所提出的可视化可以扩展到输出电压基准变化下的瞬态。通过与实验波形的对比，验证了PWM策略可视化的有效性。
The explanations of the PWM strategies of a direct matrix converter are classified into “Direct AC/AC converter”, “Virtual AC/DC/AC Conversion” and “Instantaneous Space Vector Diagram”. Since the PWM strategies of matrix converters are complex, it may be difficult to understand the same PWM strategies under the different explanations. This paper presents the visualization of the PWM waveforms of the output voltage and the input current during the input and output voltage periods. From the visualized waveforms of the output voltage and the input current, the difference and evaluation among several PWM strategies can be easily realized. For the two PWM strategies which are derived from the fundamental equations of the duty cycles of a matrix converter, the visualized waveforms of the output voltage and the input current are derived. The proposed visualization can be extended to the transient state under the change of the output voltage reference. The effectiveness of the visualization of PWM strategy has been verified by comparison between the visualized and experimental waveforms.