Title :
Performance analysis of a large hydro generator after disconnection of damaged coils
Author :
Aguiar, Ana B. M. ; Merkhouf, Arezki ; Al-Haddad, Kamal
Author_Institution :
Ecole de Technol. Super., IREQ Inst. de Rech. Hydro-Quebec, Varennes, QC, Canada
Abstract :
The main objective of this paper is to determine the capability of the machine to operate at nominal load when some stator coils bars that are cut. Finite element electromagnetic simulations were carried out on an existing hydro generator of 32.5 MVA, 13.2 kV, 60 Hz, 68 poles, 432 stator slots, operating at nominal load with bypassed stator coil. The obtained results in terms of flux density and currents are discussed in detail.
Keywords :
finite element analysis; hydroelectric generators; stators; apparent power 32.5 MVA; bypassed stator coil; damaged coils disconnection; finite element electromagnetic simulations; flux density; frequency 60 Hz; hydro generator; nominal load; stator slots; voltage 13.2 kV; Coils; Finite element analysis; Generators; Integrated circuit modeling; Load modeling; Stator windings; coils; electromagnetic analysis; electromagnetic fields; finite element method; hydroelectric power generation and numerical analysis;
Conference_Titel :
Electrical Machines (ICEM), 2014 International Conference on
Conference_Location :
Berlin
DOI :
10.1109/ICELMACH.2014.6960188
