Design and Experimental Validation of a High-Speed Permanent Magnet Machine for Centrifugal Air Compressor in Hydrogen Fuel Cell Power Station

The high-speed permanent magnet (HSPM) machine for centrifugal air compressor in hydrogen fuel cell power station (CAC-HFCPS) has the advantages of high power density and high efficiency. Compared with traditional low-speed machines, the design of HSPM machines needs to focus on issues such as rotor strength, critical speed, loss and temperature rise. In this paper, a 96kW&&47000r/min HSPM machine is designed based on multi-physics collaborative (MPC) method, ant the power output capability, loss distribution, rotor strength and temperature rise are comprehensively investigated. Furthermore, a prototype of HSPM machine is manufactured and experimented, and the measured performance indicate that it can meet the requirements of CAC-HFCPS, which verifies the effectiveness of the MPC method and provides an important reference for the design of HSPM machines.