Title :
Modeling dynamic end effects in rotary armature of rotary-linear induction motor
Author :
Amiri, Ebrahim ; Jagiela, Mariusz ; Dobzhanski, Oleksandr ; Mendrela, Ernest
Author_Institution :
Dept. of Electr. & Comput. Eng., Louisiana State Univ., Baton Rouge, LA, USA
Abstract :
The performance of twin-armature rotary-linear induction motor is presented in this paper. The stator consists of a rotary armature and linear armature placed aside one another. Both armatures have a common rotor which consists of solid iron cylinder covered with a thin copper layer. The rotor can move rotary, linearly or with helical motion. The linear motion generates dynamic end effect on both linear and rotary armature. Modeling such an effect in rotary armature is a significant challenge as it requires a solution considering motion with two degrees of mechanical freedom. The approach used to address linear motion on rotary armature is based on the combination of transient time-domain finite element model and frequency-domain slip frequency technique. The results obtained from finite element modeling are then verified by test carried out on experimental model of the motor what validates the proposed method.
Keywords :
finite element analysis; induction motors; linear motors; time-domain analysis; transient analysis; dynamic end effect; frequency-domain slip frequency technique; helical motion; linear motion; mechanical freedom; modeling dynamic end effects; solid iron cylinder; stator; thin copper layer; transient time-domain finite element model; twin-armature rotary-linear induction motor; Dynamics; Finite element analysis; Induction motors; Iron; Rotors; Transient analysis; Windings; Rotary-Linear motor; dynamic end effect; helical motion;
Conference_Titel :
Electric Machines & Drives Conference (IEMDC), 2013 IEEE International
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-4975-8
Electronic_ISBN :
978-1-4673-4973-4
DOI :
10.1109/IEMDC.2013.6556231