Analysis and improvement of high efficiency and low cost drive system based on direct torque control

Author

Wei Xie ; Xiaocan Wang ; Dajaku, Gurakuq ; Gerling, Dieter ; Kennel, Ralph

Author_Institution

Inst. of Electr. Drives & Actuators, Univ. der Bundeswehr Muenchen, Munich, Germany

fYear

2013

fDate

2-6 Sept. 2013

Firstpage

1

Lastpage

10

Abstract

In this paper, an optimal reference stator flux strategy is proposed to improve the drive system efficiency under direct torque control (DTC). A novel low cost interior permanent magnet synchronous machine (IPMSM) is introduced and used. Based on the easily implementable loss model (LM), the controllable electrical losses which consist of copper loss and iron loss have been minimized under optimal stator flux. Based on finite element method (FEM), the harmonics which is produced by inverter is injected into FEM model; the nonlinear machine parameters and its influence to LMC are also considered. The drive performance´s effectiveness of the proposed scheme is validated in experiment.

Keywords

machine control; nonlinear control systems; permanent magnet machines; stators; synchronous machines; synchronous motor drives; torque control; AC machine; IPMSM; MTPA; direct torque control; electrical losses; finite element method; high efficiency drive system; interior permanent magnet synchronous machine; loss model control; low cost drive system; maximum torque per ampere; nonlinear Control; stator flux strategy; Copper; Equivalent circuits; Iron; Permanent magnet motors; Stator windings; Synchronous motors; AC machine; Efficiency; Non-linear Control; Optimal Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE), 2013 15th European Conference on

Conference_Location

Lille

Type

conf

DOI

10.1109/EPE.2013.6631828

Filename

6631828