DocumentCode :
3487054
Title :
A new approach to direct torque control strategy with minimization torque pulsations in permanent magnets synchronous machines
Author :
Rekioua, D. ; Rekioua, T.
Author_Institution :
Univ. of de Bejaia, Bejaia
fYear :
2005
fDate :
27-30 June 2005
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, we present a new approach to direct torque control (DTC) with minimization torque pulsations in permanent magnet synchronous machines (PMSM). The synchronous machine torque control, based on the DTC structure, permits to obtained high dynamic performances. In classical DTC, due to the hysteresis based scheme, the switching frequency is variable, current distortion and torque ripple are more important. Moreover high sampling frequency is needed for digital implementation. In order to obtain a constant switching frequency and hence torque ripple minimization, we introduces a new control technique for PMSM. It consists of controlling directly the electromagnetic torque by using a modulated hysteresis controller. The improvements obtained are principally a constant switching frequency in the inverter and an important reduction of the torque ripple. A digital-signal-processor (DSP) based controller is used to study the application of direct torque control method for PMSM. The implementation in a test bench shows the effectiveness of this control. Results obtained by simulation and experimental tests of this strategy are presented.
Keywords :
machine control; magnetic hysteresis; permanent magnet machines; synchronous machines; torque control; DSP; DTC; PMSM; constant switching frequency; current distortion; digital-signal-processor based controller; direct torque control strategy; electromagnetic torque; hysteresis based scheme; minimization torque pulsations; modulated hysteresis controller; permanent magnets synchronous machines; switching frequency; torque ripple; Digital signal processing; Electric variables control; Hysteresis; Inverters; Permanent magnet machines; Sampling methods; Switching frequency; Synchronous machines; Testing; Torque control; Constant Switching Frequency; Direct Torque Control; Minimization Torque Pulsations; Modulated Hystersis Controller; Permanent Synchronous Machine;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
Type :
conf
DOI :
10.1109/PTC.2005.4524699
Filename :
4524699
Link To Document :
بازگشت