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首页> 外文期刊>International journal of circuit theory and applications >Simplified quasi-Z source indirect matrix converter
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Simplified quasi-Z source indirect matrix converter

机译：简化的准Z源间接矩阵转换器

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摘要

Conventional matrix converters have a limited voltage gain less than 0.866 and also require many power switches and additional input filter that ensures a low input current harmonics to the grid. Quasi-Z source (qZS) indirect matrix converter can provide high voltage gain and ensure a sinusoidal input current without additional input filter, which requires 12 power switches in rectifier stage. In this paper, a simplified qZS indirect matrix converter is proposed to overcome aforementioned limitations and achieve (1) higher voltage gain than 0.866, (2) less power switches, and (3) LC-filter function integrated in qZS network to avoid additional filter. The new converter's operating principle and equivalent circuits are analyzed, and the modulation method is presented. The input current closed-loop control is employed to implement sinusoidal input current waveform even though the proposed converter has less power switches and without extra input filter. A test bench is used to verify the simplified qZS indirect matrix converter and control methods. Simulation and experimental results identically validate the proposed converter system with wide voltage gain range and low input current harmonics. Copyright (c) 2014 John Wiley & Sons, Ltd.
机译：常规矩阵转换器的电压增益限制小于0.866，并且还需要许多电源开关和附加的输入滤波器，以确保对电网的低输入电流谐波。准Z源（qZS）间接矩阵转换器可提供高电压增益并确保正弦输入电流，而无需额外的输入滤波器，这需要在整流器级使用12个电源开关。在本文中，提出了一种简化的qZS间接矩阵转换器，以克服上述局限性，并实现（1）高于0.866的电压增益，（2）较少的功率开关，以及（3）集成在qZS网络中的LC滤波器功能以避免额外的滤波器。分析了新型变换器的工作原理和等效电路，并提出了调制方法。即使建议的转换器具有较少的功率开关并且没有额外的输入滤波器，输入电流闭环控制仍可用于实现正弦输入电流波形。测试台用于验证简化的qZS间接矩阵转换器和控制方法。仿真和实验结果相同地验证了所提出的具有宽电压增益范围和低输入电流谐波的转换器系统。版权所有（c）2014 John Wiley＆Sons，Ltd.

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