质子交换膜燃料电池控制系统的研究

质子交换膜燃料电池(PEMFC)控制系统,以工业控制计算机为核心,采用了数字比例积分微分(PID)计算机控制技术,通过质量流量控制器进行进气流量和尾气流量的控制,实现了稳定的双路协调的压力控制。并且,通过对循环水流速的控制,实现了稳定的电堆温度控制。此控制系统的气体压力值和电堆温度值可以任意设定在具体实验要求的某一数值。并且此系统的人机对话界面可以方便地实现控制状态的设定,可以进行实时的实验监控和数据存储以及数据查询。经实际应用证明,此控制系统控制稳定、实用性强,可应用于100～5 000 W的PEMFC发电系统的实验研究。

Study on the control system of proton exchange membrane fuel cell

The control system of proton exchange membrane fuel cell (PEMFC) based on industrial control computer, which adopts digital proportional-integral-differential(PID) control technology was presented. This system processes input-gas flow and tail-gas flow controls by mass-flow controller to realize steady concerted pressure control of both loops, and it can realize steady temperature control by controlling flow speed of circulating water. The gas pressure and electrical stack temperature of the system can be set at any value required in an actual experiment. The man-machine interface can conveniently be used to control the state of the system, and it can process real-time experiment inspecting and data storage and data inquiry. The experiment demonstrates such system with steady control and high practicability can be applied for the experimental research of PEMFC generating electricity system (100~5 000 W).