地铁辅助逆变电源自适应模糊控制

Adaptive fuzzy control of subway auxiliary inverter

针对地铁辅助逆变电源系统带非线性负载时波形畸变及负载切换或母线电压波动时系统的动态响应慢等问题,设计了一种自适应模糊控制与三环控制相结合的复合控制策略,并根据系统的实际运行特点,归纳总结出了合适的模糊控制规则。利用Matlab/Simulink对组合式模糊控制系统进行了仿真,结果证明算法的有效性,最后将该控制策略应用在2.5 kVA的逆变电源实验样机上,实验结果表明该控制方案对逆变系统母线电压波动及非线性负载有很好的抑制作用。

For these problems of the waveform distortion and slow dynamic response when encountering load switch, nonlinear load or busbar voltage instability of subway auxiliary inverter, combining adaptive fuzzy control with three loop control, a compound control strategy was proposed. According to the system actual operation characteristics, appropriate fuzzy control rules were designed. The controller was studied by simulation in Matlab/Simulink. It is proved that it is of satisfactory performance. Finally, the composite controller was applied to a 2.5 kVA test prototype, and the experimental results show that the control strategy has significant inhibitory effect on both the nonlinear loads and busbar voltage fluctuations of the inverter system.