Title :
Analysis of radial force and torque for bearingless wound-rotor induction motor
Author :
Liu, Xianxing ; Shi, Tao ; Ding, Ling ; Shao, Xiaoyan ; Xu, Gaohong
Author_Institution :
Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China
Abstract :
A bearingless wound-rotor induction motor has been presented in this paper. Ansoft/Maxwell has been used to compute the transient response of radial force and torque in bearingless induction motor. The results show that a constant torque is independent of the suspension currents can be generated and a steady radial force can support the shaft weight. Compared to the bearingless squirrel cage induction motor, the proposed bearingless wound-rotor induction motor can generate a larger radial force and a more constant torque that is independent of the suspension currents. An Improved Space Vector Modulation Direct Torque Control (ISVM-DTC) method has been presented to realize the steady control of bearingless wound-rotor induction motor.
Keywords :
force; induction motors; machine control; magnetic bearings; magnetic levitation; torque control; Ansoft/Maxwell; bearingless induction motor torque; bearingless wound rotor induction motor; radial force; shaft weight; space vector modulation direct torque control method; steady control; suspension current; transient response; Force; Induction motors; Mathematical model; Rotors; Suspensions; Torque; Windings;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073900
