混合型有源故障限流器无功补偿控制策略分析

Analysis of Hybrid Active Fault Current Limiter Reactive Power Compensation Strategies

提出了一种混合型有源限流电抗器无功补偿的方案,并对其原理进行了详细分析。整流侧通过d-q解耦控制,实现直流电压与交换无功的解耦控制。逆变侧则采用电流滞环控制使输出电流跟随补偿指令电流。通过整流侧与逆变侧对电抗器无功功率的对等补偿可实现电抗器两侧电压幅值无差值。通过3种不同补偿方案的仿真结果与实验波形对比验证了对等补偿控制思想的可行性与应用价值。

A hybrid active current limiter reactor reactive power compensation strategy is presented.Some detailed analysis of its basic principle is also given.Using d-q decoupling control,the rectifier can easily achieve decoupling control for direct voltage and reactive power.Adopting current hysteresis control, the inverter makes the output current follow the instruction current.For there is no loss for voltage amplitude it is easy to find that the compensation strategy which called equivalence compensation is the best solution.The comparisons of simulation results and experiments waveforms verify the feasibility and applicability of the equivalence compensation strategy.