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一种消除电流源逆变器SVPWM矢量偏差误差的新型重叠方法

Novel Overlap Method to Eliminate Vector Deviation Error in SVM of Current Source Inverters

语言:

中文摘要

电流源逆变器在切换矢量状态时需引入重叠时间以防止直流侧大电感电流中断,但这会导致输出矢量偏差并产生难以滤除的低次谐波。本文提出了一种新型调制方法,通过优化重叠过程有效消除了矢量偏差误差,从而提升了输出波形质量。

English Abstract

The modulation signal of current source inverter contains an overlap instant to prevent interrupting the dc of the bulky input inductor. This overlap instant, located between vector states, results in output vector deviation errors which, in turn, leads to low-order harmonics in the output waveform. These harmonics are difficult to reject by the output filter. In this article, a novel modulation m...
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SunView 深度解读

虽然阳光电源目前的主流产品(如组串式和集中式光伏逆变器、PowerTitan储能变流器)多采用电压源逆变器(VSI)拓扑,但该文献研究的电流源逆变器(CSI)技术在特定工业驱动或高压直流输电领域具有应用潜力。对于阳光电源而言,该研究中关于“消除矢量偏差”和“抑制低次谐波”的控制思路,可借鉴优化现有逆变器在弱电网环境下的调制策略,提升并网电流质量,增强系统在复杂工况下的电能质量控制能力。