基于模糊PID控制的燃料电池稳压技术研究

Research on PEMFC Voltage Stabilization Technology Based on Fuzzy PID Control

质子交换膜燃料电池(PEMFC)是一个复杂的非线性系统。针对其输出电压不稳定且电压调节范围较小,作者设计了基于模糊PID控制的DC-DC变换器进行稳压。根据DC-DC变换器输出电压偏差E和偏差变化率Ec,利用设计的模糊规则,调整PID控制器的参数,改善控制效果。在MATLAB软件中建立了基于模糊PID控制的燃料电池DCDC变换器稳压模型,进行仿真研究。建立燃料电池稳压实验系统,进行实验验证。仿真和实验结果表明,设计的基于模糊PID控制的DC-DC变换器,具有良好的稳压能力和较强的鲁棒性。

Proton exchange membrane fuel cell(PEMFC)is a complexand nonlinear system.In response to its unstable output voltage and small voltage regulation range,a DC-DC converter based on fuzzy PID control for voltage stabilization is designed in this paper.Based on the output voltage deviation and deviation rate of the DC-DC converter,the fuzzy rules designed are used to adjust the parameters of the PID controller and improve the control effect.A voltage stabilizing model of PEMFC DC-DC converter based on fuzzy PID control is established in MATLAB software for simulation research.A fuel cell voltage stabilization experimental system is established for experimental verification.The simulation and experimental results show that the designed DC-DC converter based on fuzzy PID control has good voltage stabilizing ability and strong robustness.