Electromagnetic losses computation in existing large hydro electrical generators

Author

Merkhouf, Arezki ; Hudon, Claude ; Bélec, Mario ; Guillot, Eilin ; Aguiar, Ana B M ; Al-Haddad, Kamal

Author_Institution

IREQ Inst. de Rech. Hydro-Quebec, Varennes, QC, Canada

fYear

2011

fDate

15-18 May 2011

Firstpage

113

Lastpage

118

Abstract

The hydroelectric generation industry faces two related challenges: increasing the output the existing hydro electrical generators but without reducing the reliability of these aging facilities. Many aspect of hydroelectric generator should be considered during any up-rate study. Magnetic losses of the stator and rotor core may change significantly with any load increase. The open and short circuit core losses are major components in the efficiency and temperature rise calculations for any considered up-rate. Advanced numerical methods are used to determine different magnetic losses in the considered hydro electrical generator before any upgrade. Magnetic core losses results will be discussed in this present paper.

Keywords

hydroelectric generators; hydroelectric power stations; magnetic leakage; rotors; stators; electromagnetic losses; hydroelectric generation industry; hydroelectric generators; magnetic losses; open circuit core losses; rotor core; short circuit core losses; stator; Computational modeling; Generators; Magnetic cores; Magnetic losses; Rotors; Shock absorbers; Stators; damper bar current; flux density; hydro electrical generator; magnetic losses; pole face losses; refurbishment;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines & Drives Conference (IEMDC), 2011 IEEE International

Conference_Location

Niagara Falls, ON

Print_ISBN

978-1-4577-0060-6

Type

conf

DOI

10.1109/IEMDC.2011.5994762

Filename

5994762