中文摘要：

首先分析了进行微网逆变电源输出有功无功解耦控制的原因、必要性和应用场景。然后基于相对增益法根据线路传输功率表达式分析功率耦合产生的原因,给出耦合度的计算方法及其所表达的含义。之后提出基于前馈补偿的解耦算法,并把现在已知的三大类功率解耦方案进行对比,阐述各自的优缺点和应用场合。最后设计了一个仿真算例,通过PSCAD/EMTDC仿真验证了所提前馈补偿解耦方法具有较好的解耦效果。

英文摘要：

This paperindicates reasons, necessity and application scenarios of decoupling active and reactive power of microgrid inverters. According to line transmission power expression it analyzes cause of power coupling based on relative gain method, and presents calculation method and meaning of the coupling degree. Then, a decoupling algorithm based on feed-forward compensation is proposed. In addition, three kinds of power decoupling schemes are comprehensively compared and their advantages and disadvantages and applications are described. At last, a simulation example is designed in PSCAD/EMTDC simulation showing that the proposed feed-forward compensation decoupling method has good decoupling performance.