PEMFC的变论域模糊参数自调整PID控制

Control of PEMFC Based on Variable-Universe Self-Tuning Fuzzy PID

质子交换膜燃料电池作为一种高效的绿色环保电源受到越来越多的关注.因其自身存在非线性和不确定性,对质子交换膜燃料电池实现精确控制仍存在一定难度,常规PID控制往往难以适应工况变化.文中设计一种变论域模糊参数自调整PID控制方案.通过变论域模糊控制器对PID进行参数整定,对质子交换膜燃料电池实施恒压输出控制.仿真实验结果表明:变论域模糊自调整PID控制提高了质子交换膜燃料电池跟踪设定输出电压的精度和速度,抗扰能力也得到显著增强.变论域模糊自调整PID控制是实现质子交换膜燃料电池恒压供电功能的一种有效方法.

Proton exchange membrane fuel cell(PEMFC)as an efficient green power source has attracted more and more attention.Because of its nonlinearity and uncertainty,it is still difficult to achieve accurate control of PEMFC,and conventional PID control is often difficult to adapt to the changes of operating conditions.A variable universe fuzzy parameter self-adjusting PID control scheme is designed in this paper.The parameters of PID are adjusted by variable universe fuzzy controller,and the constant voltage output control is implemented for proton exchange membrane fuel cell.The simulation results show that the variable universe fuzzy self-adjusting PID control improves the accuracy and speed of tracking and setting the output voltage of PEMFC,and the anti-interference ability is also significantly enhanced.Variable universe fuzzy self-tuning PID control is an effective method to realize the constant voltage power supply function of proton exchange membrane fuel cells.