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首页> 外文期刊>Journal of power electronics >Single-Phase Transformerless PV Power Conditioning Systems with Low Leakage Current and Active Power Decoupling Capability
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Single-Phase Transformerless PV Power Conditioning Systems with Low Leakage Current and Active Power Decoupling Capability

机译:低漏电流和有功功率去耦能力的单相无变压器光伏功率调节系统

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摘要

This paper proposes a transformerless photovoltaic (PV) power converter system based on the DC/AC boost inverter, which can solve the leakage current and second-order ripple power issues in single-phase grid-connected PV inverters. In the proposed topology, the leakage current can be decreased remarkably since most of the common-mode currents flow through the output capacitor, by-passing parasitic capacitors, and grounding resistors. In addition, the inherent ripple power component in the single-phase grid inverter can be suppressed without adding any extra components. Therefore, bulky electrolytic capacitors can be replaced by small film capacitors. The effectiveness of the proposed topology has been verified by simulation and experimental results for a 1-kW PV PCS.
机译:本文提出了一种基于DC / AC升压逆变器的无变压器光伏(PV)功率转换器系统,该系统可以解决单相并网光伏逆变器中的泄漏电流和二阶纹波功率问题。在提出的拓扑中,由于大多数共模电流流经输出电容器,旁路寄生电容器和接地电阻,因此可以显着降低泄漏电流。另外,可以抑制单相电网逆变器中固有的纹波功率分量,而无需增加任何额外的分量。因此,可以用小薄膜电容器代替笨重的电解电容器。通过1kW PV PCS的仿真和实验结果验证了所提出拓扑的有效性。

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