PEMFC发电系统的自适应模糊控制与动态分析

监测和控制燃料电池的过程中,需要获得各种实时数据.质子交换膜燃料电池(PEMFC)发电系统中的参数强耦合、高度非线性特性增加了对其控制的难度,传统的PI控制虽然对模型精确的系统有较好的控制效果,但对于参数波动的系统则无法获得较高的控制性能.针对以上情况,基于PEMFC发电系统的动态仿真模型,根据重整器在燃料电池发电系统中的作用,设计了自适应模糊控制器.利用模糊控制规则在线控制氢气摩尔流,从而控制PEMFC发电系统的输出功率.仿真结果表明,该动态模型能够预测输出电压.响应曲线显示出自适应模糊控制算法能够较好控制燃料电池有功和无功功率的输出.模型具有良好的负载跟踪特性.

Adaptive Fuzzy Control and Dynamic Analysis of a PEMFC Power Plant

During the process of monitoring and controlling fuel cells,it needs to acquire various real-time data.Because there are nonlinear characteristics in the polymer electrolyte membrane fuel cell(PEMFC),it is difficult to control it.According to these factors,based on the dynamic electrochemical simulation model of a PEM fuel cell power plant and according to the reformer function in the fuel cell power plant,an adaptive fuzzy controller is designed.Fuzzy rules are used to control the mole flow of hydrogen,thus controling the output power of the PEMFC power plant.The response curves indicate that the adaptive fuzzy control is able to control the active output power and the reactive output power of the fuel cell.The results show that the model can predict the output voltage and has fast response capabilities of the PEMFC power plant in following changes in the load.