Abstract
This paper proposes a control technology of an ultrahigh-speed centrifugal compressor for the air management of proton exchange membrane fuel cells for automotive applications. The mathematical model of the air management system (AMS) is experimentally validated. The implementation of a fast butterfly valve with a proportional–integral controller overcomes the difficulty of pressure ratio control, to make the system work on the optimal operating points. The application of a reference limiter restricts the trajectory of the operating points in the right region of the surge line to ensure the safety of the compressor. Experimental results show the goodness of the reference tracking property, in terms of mass flow and pressure. Meanwhile, the surge phenomenon is prevented by the reference limiter.
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