Title :
A comparison of stack preparation methods for bar insulation in diecast rotors
Author :
Koch, Brian ; Spée, René ; Clever, Bryan
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
In order to make brushless doubly-fed machines (BDFM) cost effective to manufacture, diecasting must be employed to produce the specialized rotor. Since BDFM rotors require insulation between the bars and stack (also a concern for high efficiency induction machines), an investigation was undertaken assessing different stack treatments to provide insulation. Ten rotors were cast, using several pre and post casting treatments. The performance of some rotors compared favorably to an existing noncast manufactured BDFM rotor with close to ideal insulation. These results indicate that diecasting of BDFM rotors is feasible
Keywords :
brushless machines; casting; induction motors; machine insulation; rotors; bar insulation; brushless doubly-fed machines; diecast rotors; high efficiency induction machine; induction motors; noncast manufactured BDFM rotor; post casting treatment; pre casting treatment; stack preparation methods; Bars; Casting; Costs; Induction machines; Insulation; Machine windings; Manufacturing; Rotors; Stators; Variable speed drives;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.643025
