CAJ | 학술논문

文章介绍了链式STATCOM的拓扑结构，在此基础上建立了数学模型。直流侧电容电压平衡控制是链式STATCOM的一个关键技术问题，针对此问题，采用了一种分级协调控制策略，通过改变H桥单元的输出电压和电流的夹角从而调整吸收／释放的有功功率，最终控制直流侧电容电压平衡。最后，搭建了仿真模型，仿真结果验证了控制策略的正确性和可行性。
문장개소료련식STATCOM적탁복결구，재차기출상건립료수학모형。직류측전용전압평형공제시련식STATCOM적일개관건기술문제，침대차문제，채용료일충분급협조공제책략，통과개변H교단원적수출전압화전류적협각종이조정흡수／석방적유공공솔，최종공제직류측전용전압평형。최후，탑건료방진모형，방진결과험증료공제책략적정학성화가행성。
The topology of the cascaded STATCOM is presented, and the mathematical model is built based on the topology. Unbalance of dc-capacitor-voltage is a key technical problem of cascaded STATCOM. To solve this problem, a multi-level cooperation control strategy is used. Dc-capacitor-voltage could remain constantly, when changing the angle between H-bridge voltage and current to adjust the active power absorbed or discharged by it. The simulation results have proved the correctness and the feasibility of the control strategy.