Title :
The current distribution on the elementary conductors of the Roebel bar
Author :
Dordea, Toma ; Torac, Ileana ; Madescu, Gheorghe ; Proca, Victor ; Mot, Martian ; Ocolisan, Lucian
Author_Institution :
Timisoara Branch, Romanian Acad., Timisoara, Romania
Abstract :
The paper deals with the Roebel bar losses computation. It was considered the most general Roebel bar structure, including both solid and hollow elementary conductors. One proposes an analytical method for the estimation of the currents in the elementary conductors, as function on the geometrical dimensions and material data. It is possible to emphasize also the current density distribution on the cross section of each elementary conductor. The radial field in the slot area and that in the end coil area were taken in to account. One can analyze the influence of any quantities (machine and material data) on the Roebel bar losses. Therefore, the proposed method is very useful to optimize the bar structure, for the machine efficiency improvement.
Keywords :
conductors (electric); current density; current distribution; Roebel bar losses computation; Roebel bar structure; current density distribution; elementary conductors; end coil area; geometrical dimensions; machine efficiency improvement; material data; radial field; slot area; Bars; Coils; Conductors; Current density; Current distribution; Electrical engineering; Strips; Roebel bar optimization; additional losses computation; analytical method; losses estimation;
Conference_Titel :
Electrical Machines (ICEM), 2010 XIX International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4174-7
Electronic_ISBN :
978-1-4244-4175-4
DOI :
10.1109/ICELMACH.2010.5607924
