Title :
Loss calculation and thermal simulation analysis of high-speed PM synchronous generators with rotor topology
Author :
Weili, Li ; Jing, Wang ; Xiaochen, Zhang ; Baoquan, Kou
Author_Institution :
Coll. of Electr. & Electron. Eng., Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
The machine under study is a high speed permanent magnet (PM) synchronous generator, which is driven by a micro gas turbine, whose rated power is 117 kW at 60 000 rpm. Magnetic field distributions in generators having either semi-closed slots or closed slots are analyzed respectively when PM is magnetized by two different familiar magnetizing methods, and eddy losses in each rotor are calculated. Then, influence of copper screen on eddy loss distribution is studied, and the relationship between thickness of copper screen and loss is discussed as well. Finally, based on loss calculation, thermal performances of generators with different rotor structures mentioned above are studied, and utility of copper screen in improving temperature rise issue is demonstrated.
Keywords :
eddy current losses; gas turbines; magnetic fields; permanent magnet generators; rotors; synchronous generators; copper screen; eddy loss distribution; high-speed PM synchronous generators; magnetic field distributions; microgas turbine; permanent magnet synchronous generator; rotor topology; thermal simulation analysis; Copper; Magnetic noise; Magnetic shielding; Rotors; copper screen; eddy loss; permanent magnet; thermal analysis;
Conference_Titel :
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-7235-2
Electronic_ISBN :
978-1-4244-7237-6
DOI :
10.1109/ICCASM.2010.5622209
