Title :
Strategy of efficiency optimization of PMSM-DTC system used for EVs
Author :
Shuo Zhang ; Xiaomin Zhou ; Dawei Gao
Author_Institution :
Mech. & Electron. Eng. Dept., Univ. of Sci. & Technol., Beijing, China
fDate :
Aug. 31 2014-Sept. 3 2014
Abstract :
A loss minimization strategy for PMSMs used for EVs is proposed in this paper which is based on PMSM-DTC loss model. Through the analysis of the relationship between kinds of losses and exciting current, the optimal given values are obtained. The control principles of stator flux, torque angle and torque of PMSM-DTC system are analyzed to propose a voltage vector selection strategy of twelve sectors substituting the traditional switching table. The results verify that the loss minimization strategy can improve the efficiency of the system, decrease current and torque ripples, and improve the dynamic and static performance of the system.
Keywords :
electric vehicles; losses; optimisation; permanent magnet motors; stators; synchronous motors; torque control; EV; PMSM-DTC loss system model; current ripples; direct torque control principles; efficiency optimization strategy; electric vehicle; loss minimization strategy; optimal exciting current; optimal given values; permanent magnet synchronous motor; stator flux; switching table; system dynamic performance improvement; system efficiency improvement; system static performance improvement; torque angle; torque ripples; voltage vector selection strategy; Equations; Iron; Mathematical model; Optimization; Stators; Torque; Vectors; direct torque control (DTC); efficiency optimization control; electric vehicle (EV); loss model control(LMC); permanent magnet synchronous machine (PMSM);
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6940691
