A Study on Rotor Eddy Current Loss and Thermal Analysis of PM Synchronous Generator for Wind Turbine
풍력터빈 PM형 동기발전기의 와전류손실과 열 해석에 관한 연구

Man Soo Choi, Young Hag Chang, Tae Sik Park, Moon Seon Jeong, Chae Joo Moon
2014 The Transactions of The Korean Institute of Electrical Engineers  
In this paper, eddy current loss, iron loss and heat transfer of PMSG with 2,000kW capacities were analyzed for wind turbine. The PMSG with 3 split magnet was analyzed using ansoft maxwell commercial program and, generator was tested by Back to Back converter with no load condition at laboratory. Rotor surface temperature was measured by Pt100 sensors for investigating heat transfer from rotor to atmosphere. The simulation results shows 27.4kW eddy current loss in no load condition and 50.2kW
more » ... dy current loss in rated load condition with 3 split magnet, and also shows 4.3kW iron loss in no load condition and 7.3kW iron loss rated load condition. The heat transfer coefficient of convection between rotor surface and atmosphere was investigated by 9.6 W/m²·K. Therefore the heat transfer from rotor to atmosphere was about 17kW(54%) and from rotor to air-gap was about 14.6kW(46%) in no load condition. It is identified that the cooling system for stator have to include the 46% of iron loss, and heat dissipation structure of rotor surface have to be suggested and designed for efficiency improvement of generator.
doi:10.5370/kiee.2014.63.11.1575 fatcat:zvwnv62bnfegbarmli62sk4f24