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Research on high performance direct torque control system based on DSP

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5 Author(s)
Jiefan Cui ; Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang ; Hemin Wang ; Chengyuan Wang ; Junzhu Wan
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To minimize the ripples of the electromagnetic torque and flux linkage, fix the variable switching frequency, produced in the conventional direct torque control (DTC) system for permanent magnet synchronous motor (PMSM), a space vector modulation (SVM) DTC strategy was introduced based on PI predictive controller. This strategy and the conventional DTC were simulated by the Matlab/Simulink toolbox, the conventional DTC and SVM-DTC PMSM drive system was implemented based on TMS320LF2407 digital signal processor (DSP), the steady state and dynamic performance of the two schemes was analyzed. The results show that the steady state performance is improved in the SVM DTC system while preserving the dynamic performance of conventional DTC system and achieving constant switching frequency.

Published in:

Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on

Date of Conference:

25-27 June 2008