Volume 20: Sustainable Energy Solutions for a Post-COVID Recovery towards a Better Future: Part III

Rapid response control of humidity for a polymer electrolyte membrane fuel cell test system Ming Fang, JianXiao Zou

Abstract

Rapid humidity regulation is key to maintaining good fuel cell performance, so the design of a suitable humidification system and control strategy is important for the polymer electrolyte membrane fuel cell test system. In this study, a humidification system with dry and wet gas mixing is proposed, and PID control is used to track a predetermined relative humidity set point. The results show that the humidity can be quickly and precisely controlled and adjusted by dry and wet gas distribution control, and that the change in wet gas inlet flow is consistent with the actual change in relative humidity.

Keywords fuel cell, humidification system, humidity regulation, control strategy