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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Active Common-Mode Filter for Ground Leakage Current Reduction in Grid-Connected PV Converters Operating With Arbitrary Power Factor
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Active Common-Mode Filter for Ground Leakage Current Reduction in Grid-Connected PV Converters Operating With Arbitrary Power Factor

机译：有源共模滤波器，用于降低以任意功率因数运行的并网PV转换器中的漏地电流

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摘要

This paper proposes a solution for reducing the ground leakage current in transformerless single-phase grid-connected photovoltaic converters. This is obtained with the introduction of an active common-mode filter able to compensate for variations of the output common-mode voltage of the power converter. The active common-mode filter is applied to a widespread and efficient full-bridge driven by a three-level pulse width modulation, allowing the power converter to operate with low ground leakage current and with an arbitrary power factor. After showing the desired voltage waveform for common-mode voltage compensation, this paper presents the design guidelines for the needed additional magnetic component together with the power loss considerations for all the devices added for the proposed solution. Experimental results show the performance of the proposed solution in terms of ground leakage current reduction, effectiveness of dead-time compensation, total harmonic distortion of the injected grid current, and power losses.
机译：本文提出了一种减少无变压器单相并网光伏转换器中接地漏电流的解决方案。这是通过引入有源共模滤波器来实现的，该有源共模滤波器能够补偿功率转换器输出共模电压的变化。有源共模滤波器应用于由三电平脉冲宽度调制驱动的广泛有效的全桥，从而使电源转换器能够在低地漏电流和任意功率因数下工作。在显示了用于共模电压补偿的所需电压波形后，本文提出了所需的附加磁组件的设计指南，以及为该解决方案添加的所有器件的功率损耗考虑因素。实验结果表明，从减少接地漏电流，停滞时间补偿的有效性，注入电网电流的总谐波失真和功率损耗等方面来看，该解决方案的性能。

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