Title :
Starting performance of induction motors with cast aluminium and copper rotors including the effects of saturation and inter-bar currents
Author :
Stening, Alexander ; Sadarangani, Chandur
Author_Institution :
Dept. of Electr. Machines & Power Electron., R. Inst. of Technol., Stockholm, Sweden
Abstract :
In this paper, a study of the starting performance of induction machines with aluminium and copper casted rotors is presented. Models are developed to predict the starting current. Based on measurements of inter-bar resistivity, an analytical model is used to predict the influence of inter-bar currents on machine starting performance and stray-load losses. The results are verified by measurements. It is found that the inter-bar currents increase the pull-out torque in the aluminium rotor, but at the expense of increased stray-load losses.
Keywords :
aluminium; copper; induction motors; rotors; aluminium casted rotors; aluminium rotor; cast aluminium; copper casted rotors; induction machines; induction motors; inter-bar currents; inter-bar resistivity; saturation currents; starting current; starting performance; stray-load losses; Aluminum; Analytical models; Conductivity; Copper; Current measurement; Induction machines; Induction motors; Loss measurement; Predictive models; Rotors; Copper rotor; inter-bar current; starting torque; stray loss;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382966
