Efficiency-Optimizing Direct Torque Control of Permanent Magnet Synchronous Machines

Author

Habibi, Jalal ; Vaez-Zadeh, Sadegh

Author_Institution

Dept. of Electr. & Comput. Eng., Tehran Univ.

fYear

2005

fDate

16-16 June 2005

Firstpage

759

Lastpage

764

Abstract

Direct torque control (DTC) appears as an effective and practical control scheme for permanent magnet synchronous (PMS) motor drives. Different optimization methods are proposed to enhance the performance of conventional DTC. To the best of authors´ knowledge, the efficiency optimization of PMS motors under DTC has not yet been reported. The main contribution of this paper is an off line control method for optimization of steady state efficiency of permanent magnet synchronous machine under DTC. In the proposed DTC approach, the flux command is obtained based on an optimization procedure to yield a maximum efficiency over a wide motor operating range. Analytic determination of optimum stator flux linkage for loss minimization has been introduced. In addition, graphical interpretation of optimization procedure has been presented. Simulation results confirm the effectiveness of the proposed DTC

Keywords

machine control; magnetic flux; optimisation; permanent magnet machines; stators; synchronous motor drives; torque control; efficiency-optimizing direct torque control; flux command; graphical interpretation; loss minimization; off line control method; optimization methods; optimum stator flux linkage; permanent magnet synchronous machines drives; Couplings; Magnetic analysis; Motor drives; Optimization methods; Permanent magnet machines; Permanent magnet motors; Stators; Steady-state; Synchronous motors; Torque control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1581712

Filename

1581712