基于变论域模糊理论的PEMFC热管理系统控制研究

针对传统控制器在燃料电池功率较大且负载电流动态变化时，存在燃料电池温度控制的灵敏度和精确度较低等问题，提出一种变论域模糊PID控制策略，变论域部分通过伸缩因子来实时变化模糊PID控制器中的量化因子和比例因子,实现对模糊论域的收缩与膨胀来提高控制的稳定性。搭建55KW燃料电池模型并验证模型的可行性。设置传统PID及模糊PID控制器为对照实验组，研究结果显示：变论域模糊PID控制器超调量减小，稳态误差减小，调节时间缩短，对PEMFC热管理系统具有更好的抗干扰性能。

Thermal management system control of PEMFC based on variable universe fuzzy theory

Aiming at the problems of the insensitivity and inaccuracy of conventional controllers when the prpton exchange membrane fuel cell (PEMFC) power is high and the load current changes dynamically, a variable universe fuzzy PID control strategy was proposed in this paper. The proportion factor and scale factor in the fuzzy PID controller can be adjusted in real time by the factor to realize the contraction-expansion of the fuzzy universe, thereby improving the stability of the control. Build a 55KW fuel cell model and verify the feasibility of the model. Comparative experiments between the traditional control strategy and the variable universe fuzzy PID controll strategy. The research results indicate that the variable universe fuzzy PID controller is superior to the traditional controller in the overshoot, the steady-state error, the adjustment time, and the anti-interference performance.