Title :
Optimal Efficiency Control of Linear Induction Motor Drive for Linear Metro
Author :
Liu, Jianqiang ; Lin, Fei ; Yang, Zhongping ; Zheng, Trillion Q.
Author_Institution :
Beijing Jiaotong Univ., Beijing
Abstract :
In this paper, a new approach is proposed that minimizes the total copper and iron losses in variable speed and/or thrust force linear induction motor (LIM) drive. This method is based on a LIM model that considering the end effect and attraction force. For a given speed and load this model allows the establishment of equations to quantify copper and iron losses, and the relationship between stator field and torque currents for minimum total loss can be deduced. Based on these equations, a loss minimization control algorithm, combined with vector control mode to drive the LIM, is proposed. This algorithm allows the electromagnetic losses in a variable speed and thrust force LIM drive to be decreased while keeping a good dynamic response. The simulated results presented show that it is possible to improve the efficiency of LIM drive keeping a good dynamic response.
Keywords :
dynamic response; induction motor drives; light rail systems; linear induction motors; machine control; optimal control; copper loss; dynamic response; electromagnetic losses; iron loss; loss minimization control algorithm; optimal efficiency control; thrust force linear induction motor drive; vector control; Copper; Equations; Induction motor drives; Induction motors; Iron; Load modeling; Minimization methods; Optimal control; Stators; Torque;
Conference_Titel :
Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0737-8
Electronic_ISBN :
978-1-4244-0737-8
DOI :
10.1109/ICIEA.2007.4318756