DocumentCode :
65120
Title :
A Novel Direct Torque Control of Matrix Converter-Fed PMSM Drives Using Duty Cycle Control for Torque Ripple Reduction
Author :
Changliang Xia ; Jiaxin Zhao ; Yan Yan ; Tingna Shi
Author_Institution :
Sch. of Electr. Eng. & Autom., Tianjin Univ., Tianjin, China
Volume :
61
Issue :
6
fYear :
2014
fDate :
Jun-14
Firstpage :
2700
Lastpage :
2713
Abstract :
A novel direct torque control (DTC) strategy using duty cycle optimization is proposed for matrix converter (MC)-based permanent-magnet synchronous motor (PMSM) drive system, which is characterized by low torque ripples, no need for rotational coordinate transformation, and fixed switching frequency. Analytical expressions of change rates of torque and flux of PMSM as a function of MC voltage vectors are derived. An enhanced switching table is established by means of discretization and averaging, in which changes of torque and flux caused by voltage vectors are shown explicitly. Then, the proposed MC-fed DTC algorithm is implemented based on the table. Numerical simulation and experiments with a prototype are carried out. Both simulation and experimental results demonstrate that remarkable torque ripple reduction, more than 30%, has been achieved. As a result, the proposed strategy is proved to be effective in reducing torque ripples for MC-based PMSM drives.
Keywords :
machine vector control; magnetic flux; matrix convertors; numerical analysis; optimisation; permanent magnet motors; switching convertors; synchronous motor drives; torque control; DTC; MC voltage vector; direct torque control; duty cycle control optimization; fixed switching frequency; matrix converter-fed PMSM drive system; numerical simulation; permanent-magnet synchronous motor; rotational coordinate transformation; torque ripple reduction; Hysteresis; Matrix converters; Stator windings; Switches; Torque; Vectors; Direct torque control (DTC); matrix converter (MC); permanent-magnet synchronous motor (PMSM); torque ripple reduction;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2013.2276039
Filename :
6572870
Link To Document :
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