改进型动态电压恢复器的最小能量法

摘要

According to the traditional minimal energy control strategy's shortcomings, we put forward an improved DVR topology structure, and deduce the relative formula concerning the phasor of the minimum energy control strategy such as the voltage and the current. We propose an advanced minimum energy control strategy without the phase jump. Through detecting the load voltage current, using the improved minimum energy control strategy and voltage current double ring control, we realize the voltage amplitude and phase compensation. Then we establish the MATLAB simulation model, and design four cases to verify the advanced minimal energy control strategy. At the same time we compare it with the traditional minimal energy control strategy. The simulation results show that the topological structure with minimum energy control strategy is improved.%　　针对传统最小能量控制策略的不足，提出一种改进型DVR拓扑结构，并对基于此拓扑结构的最小能量控制策略的电压、电流等相量关系进行了公式推导；提出了一种无相位跳变的最小能量控制策略；通过对负荷电压电流的检测，利用改进型最小能量控制策略和电压电流双环控制，实现电压幅值和相位的补偿。建立Matlab仿真模型，在四种不同情况下对改进型最小能量控制策略的有效性进行验证；同时与传统最小能量控制策略进行对比分析。仿真结果表明该拓扑结构结合最小能量控制策略的有效性。