PSO优化的链式APF在外超导电源中的应用

Cascaded APF Applications in Outer Superconducting Power Based on PSO

稳态强磁场超导磁体电源采用双反星型晶闸管整流技术方案,是一种典型的非线性负载,运行时会带来较大的无功冲击及谐波污染,会对电网以及其他用户造成很大干扰。选定有源电力滤波器(APF)作为超导磁体交流侧谐波抑制方案,针对三相半桥拓扑结构的容量限制,采用级联3H桥链式结构。在此基础上引入粒子群算法优化指令电流PI控制器的PI参数,实现谐波补偿的最优化控制。经仿真模型和样机实验表明,该链式有源电力滤波器具有良好的谐波补偿性能,其控制策略具有一定的参考价值。

The steady- state magnetic field superconducting magnet power supply with dual star thyristor technology solutions,is a typical non-linear loads, the runtime wilI bring a greater impact of reactive power and harmonic pollution, will power as well as other users cause great interference, selected active power filter（APF） as a superconducting magnet AC side harmonic suppression scheme for three- phase half-bridge topology, capacity constraints, cascade 3H bridge chain structure. On this basis, the introduction of particle swarm optimization （PSO） command current PI controller parameters to achieve optimal control of harmonic compensation. The APF environment Matlab and PSCAD simulation model and prototype experiments show that the chain of active power filter has good harmonic compensation performance, and its control strategy has a certain reference value.