Naslov
Turbogenerator refurbishment with up-rating based on embedding stator damper winding and modern electromagnetic materials

Autori
Čelić, Kristina ; Haznadar, Zijad ; Berberović, Sead

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
The IEEE International Electric Machines and Drives Conference – IEMDC 2007 / - Antalya : Institute of Electrical and Electronics Engineers (IEEE), 2007, 1003-1007

Skup
The IEEE International Electric Machines and Drives Conference – IEMDC 2007

Mjesto i datum
Antalya, Turska, 03.05.2007. - 05.05.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
AC generator; finite element analysis; operating performance; losses; refurbishment; stator damper winding; synchronous generator; up-grading

Sažetak
40 MVA two-pole air cooled turbogenerator has been up-graded with stator refurbishment only. Generator active power has been increased from 32 MW to 42 MW with reference to 31% and apparent power has been increased for 23.5%, from 40 MVA to 49.4 MVA. It was necessary to redesign stator core and winding, to embed the stator damper winding and implement new magnetic and insulating materials in order to reach new higher power. Redesigned stator core needs to be of the same outside dimensions as the original one, and to be placed in the old stator casing. Refurbishment requirements with remaining the original machine parameters (but higher output) such as synchronous reactance, audible noise level, voltage and frequency regulation, reactive power and temperature rise in insulation class B have been achieved. Impact of embedding the stator damper winding has been determined by finite-element analysis since the other parameters of refurbished generator have been calculated using analytical and finite element modeling.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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