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研究了H桥级联5电平结构的电压质量调节装置,在分析装置工作原理的基础上,对系统中出现的典型电压质量问题提出了多目标控制策略,能综合解决电压暂降、谐波等问题。同时,在负荷侧发生短路故障时,还能实现限制短路电流的控制目标。基于PSCAD/EMTDC仿真软件建立了多目标电压质量调节器的仿真模型,仿真结果验证了所提出的主电路拓扑和控制策略的正确性和有效性。
Based on the working principle of the analysis device, a multi-objective control strategy for typical voltage quality problems appearing in the system is proposed, which can comprehensively solve the problems of voltage sag, harmonics And other issues. In the meantime, when the short-circuit fault occurs on the load side, the control target for limiting the short-circuit current can be realized. The simulation model of multi-target voltage quality regulator is established based on PSCAD / EMTDC simulation software. The simulation results verify the correctness and validity of the proposed main circuit topology and control strategy.