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

Volume

14

fYear

2010

fDate

22-24 Oct. 2010

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCASM.2010.5622209

Filename

5622209