中文摘要：

为解决微电网中不平衡非线性混合负载对微源逆变器输出电压的影响，提出一种混合负载控制策略。通过补偿5、7次谐波和负序不平衡分量，使微源逆变器本地独立运行时，可以带载平衡负载、不平衡负载、整流型非线性负载及相关组合的混合负载。进行谐波和不平衡控制算法的理论推导，对所提控制策略进行仿真研究和实验验证。结果表明，所提控制策略控制效果理想，能够对混合负载提供良好的电力供应。

英文摘要：

Unbalanced, nonlinear or mixed loads are the main factors which affect the output voltage quality of the micro-source inverter. A new control strategy with the 5th, 7th harmonics compensation and negative sequence components compensation was proposed, by which the good output voltage quality would be obtained when micro-source inverter operates with local balanced load, unbalanced load, nonlinear load or mixed load in stand-alone mode. The scheme of the control strategy was deduced in detail. Simulation and experiment results show the effective of the proposed control strategy.