基于模糊PID 的铝空气电源双向DC-DC 变换器

针对双向DC-DC变换器在铝空气电源工作模式切换时的非线性问题,设计一种用于铝空气电源储能系统的双向DC-DC变换器。在传统PID控制的基础上,引入模糊控制,构成模糊PID电压环和PI电流环双闭环控制。并在Matlab/Simulink中,对比分析了双向DC-DC变换器模型、传统PID双闭环模型和模糊PID双闭环模型。实验仿真结果表明:与传统PID控制方法相比,该控制方法能够有效解决双向DC-DC变换器的非线性问题,提高升降压速度,减小输出电压和电流的波动。

Aluminum Air Power Bidirectional DC-DC Controller Based on Fuzzy PID

For the nonlinear problems of bidirectional DC-DC converter in switching supply mode of aluminum air power, a bidirectional DC-DC converter used for aluminum air power storage system was designed. Fuzzy control based on traditional PID control was brought in to constitute a double loop control consists of fuzzy PID voltage loop and PI current loop. And in Matlab/Simulink, the bi-directional DC-DC converter model, the traditional double closed loop PID model and the fuzzy double loop PID model were compared and analyzed. The simulation result shows that, compared with the traditional PI control method, this control method can effectively solve the nonlinear problems of bidirectional DC-DC converter, improve the speed of step-up and step-down, and reduce the wave of voltage and current output.