DocumentCode :
2101380
Title :
Performance comparison of fault tolerant PM machine for static load holding application
Author :
Raminosoa, Tsarafidy ; Gerada, Chris ; Othman, Nazri
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Nottingham, Nottingham
fYear :
2009
fDate :
3-6 May 2009
Firstpage :
1729
Lastpage :
1735
Abstract :
This paper looks in detail at a fault tolerant machine for direct drive application. The machine considered is a high pole number, concentrated wound machine developed for a safety critical aerospace application. The machine is designed to have a high p.u. inductance to limit short circuit current and negligible mutual inductance to have decoupled phase windings. Single and double layer winding configurations are compared. The machine has a heavy magnetic loading as its most onerous requirement is to hold a static load. High resulting air gap harmonics however induce substantial eddy current losses in the magnets and the solid rotor core. Due to the high thermal resistance path to these losses, the magnets may reach limiting temperatures during dynamic operation. This paper is set to analyze and compare two winding configurations and employ analytical modeling methods to evaluate the induced eddy current loss in the rotor.
Keywords :
eddy current losses; fault tolerance; permanent magnet machines; rotors; concentrated wound machine; eddy current losses; fault tolerant permanent magnet machine; magnetic loading; mutual inductance; static load holding; thermal resistance path; Aerospace safety; Eddy currents; Fault tolerance; Inductance; Magnetic analysis; Magnetic losses; Magnets; Short circuit currents; Thermal resistance; Wounds;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Machines and Drives Conference, 2009. IEMDC '09. IEEE International
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-4251-5
Electronic_ISBN :
978-1-4244-4252-2
Type :
conf
DOI :
10.1109/IEMDC.2009.5075436
Filename :
5075436
Link To Document :
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