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中文摘要：
该文研究了多反激式微型逆变器的并网谐波交互问题。采用小信号分析方法对反激式微型逆变器进行了输出阻抗建模,得到了反激式微型逆变器的诺顿等效模型;分析了多反激式微型逆变器并网系统的谐振机理,基于该文建立的诺顿等效模型,采用系统导纳矩阵计算分析的方法,进行了系统谐振点的预测;在Matlab和PSIM软件上分别进行了理论分析和仿真验证,并设计了2台250 W样机进行实验验证。
英文摘要：
Grid harmonic interaction of flyback micro-inverter has been studied. The small-signal analysis method was adopted to obtain Norton equivalent model of the flyback micro-inverter, and the mechanism of the resonant inverter grid system was analyzed. Based on the established Norton equivalent model and the system admittance matrix, the system resonance frequency was calculated and predicted. Theory analysis and simulation verification was carried out in Matlab and PSIM software, respectively. And two sets of 250 W prototype were designed for experimental verification.
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