A Review on Water Fault Diagnosis of a Proton Exchange Membrane Fuel Cell System

Abstract Reliability and durability are the main factors that hinder the large-scale commercialization of proton exchange membrane fuel cell (PEMFC). Water management is the key to solve such problems, and water content is the measurement standard of water management. But it is very difficult to measure water content inside the fuel cell directly. Thus, water fault diagnosis is a basic technology to monitor the water content indirectly based on the measurable parameters. In this paper, the water fault diagnosis of the PEMFC system has been summarized in three sections including the theoretical model-based method, knowledge-based method, and signal processing method from practical application, and part of them is from the perspective of vehicle application.