Electromagnetic design and analysis of high power density turbine permanent magnet generator

Nacelle turbine generator systems are primarily used in the aviation field for hybrid electric propulsion systems of electric aircraft, requiring the turbine generators to have both high power density and high efficiency. To meet this requirement, based on the load characteristics of the nacelle turbine, this study conducts electromagnetic design research for a 290 kW turbine permanent magnet generator. Using finite element methods, an electromagnetic calculation model of the permanent magnet generator is established, analysing its no-load characteristics, load characteristics, and conducting loss and efficiency analysis, which proves the effectiveness of the design. The designed 290 kW generator achieves a power density of 4.9 kW/kg and a rated efficiency of 96%.