Title :
Improvement of the cooling performance of symmetrically self-ventilated induction machines in the 2-15 MW range
Author :
Küng, Lukas ; Bikle, Urs ; Popp, Oliver ; Jakoby, Ralf
Author_Institution :
ABB Ind. AG, Birr, Switzerland
Abstract :
This paper presents the results of an effort to improve the cooling performance of symmetrically self-ventilated induction machines in the 2-15 MW range. Aerodynamic modifications are applied to the rotor inlet, the rotor bars, the stator bars and the stator cooling gap supports. The modifications are tested in a rotating test rig under laboratory conditions and in a prototype engine. The cooling mass flow and cooling efficiency are increased by more than 10%
Keywords :
aerodynamics; cooling; induction motors; machine testing; rotors; stators; ventilation; 2 to 15 MW; aerodynamic modifications; cooling efficiency; cooling mass flow; cooling performance; induction motors; laboratory conditions; rotating test rig; rotor bars; rotor inlet; stator bars; stator cooling gap supports; symmetrically self-ventilated induction machines; Bidirectional control; Boring; Cooling; Engines; Induction machines; Induction motors; Prototypes; Rotors; Stator bars; Testing;
Conference_Titel :
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-7091-0
DOI :
10.1109/IEMDC.2001.939386
