Title :
Analysis of high efficiency and low cost drive system of IPMSM by using two-steps model predictive torque control
Author :
Wei Xie ; Fengxiang Wang ; Xiaocan Wang ; Dajaku, Gurakuq ; Gerling, Dieter ; Kennel, Ralph
Author_Institution :
Inst. of Electr. Drives & Actuators, Univ. der Bundeswehr Muenchen, Munich, Germany
Abstract :
In this paper, an optimal reference stator flux strategy is proposed to improve the drive system efficiency with two-steps model predictive torque control (MPTC). By compensating the step delay and reducing inverter losses, the control performance of two-steps MPTC is improved. Theoretical basis of efficiency optimization based on optimal stator flux is analyzed by mathematical method under variable speed and torque. The performance of loss model (LM) is improved by taking into account the current step delay. Based on the easily implementable LM, the controllable electrical losses which consist of copper loss, iron loss and permanent magnet (PM) loss have been minimized under optimal stator flux. A low cost (LC) interior permanent magnet synchronous machine (IPMSM) is introduced and tested. The dynamic performance of the proposed two-steps MPTC with loss model control (LMC) is validated experimentally.
Keywords :
delay systems; drives; machine control; permanent magnet machines; predictive control; stators; synchronous machines; torque control; IPMSM; LMC; MPTC; controllable electrical losses; copper loss; current step delay; drive system efficiency; efficiency optimization; interior permanent magnet synchronous machine; inverter loss reduction; iron loss; loss model control; mathematical method; optimal reference stator flux strategy; optimal stator flux; permanent magnet loss; step delay compensation; two-steps model predictive torque control; variable speed; Finite element analysis; Harmonic analysis; Inverters; Iron; Stator windings; Torque; Efficiency Optimization; Low Cost Machine; Model Predictive Torque Control;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an