Control with high performances based DTC strategy: FPGA implementation and experimental validation. Issue 2 (3rd April 2019)

• Record Type: Journal Article
• Authors: Krim, Saber; Gdaim, Soufien; Mtibaa, Abdellatif; Mimouni, Mohamed Faouzi
• Is Part Of: EPE journal. Volume 29:Issue 2(2019)
• Page Start: 82
• Page End: 98
• Publication Date: 2019-04-03
• Subjects: Direct torque control -- fuzzy logic system -- real time -- Xilinx system generator -- Field Programmable Gate Array (FPGA); Power electronics -- Periodicals; 621.31705
• DOI: 10.1080/09398368.2018.1548802
• Languages: English
• ISSNs: 0939-8368

Abstract

ABSTRACT: This paper aims to improve the induction motor performances using a modified Direct Torque Control (DTC). The DTC is featured by its simple structure and fast dynamic response. Also, it does not require a speed sensor and it is less dependent on the motor parameters. However, the basic handicaps of this method are the torque ripples and the current distortions due to the presence of the hysteresis controllers. This paper aims; firstly, to replace the hysteresis controllers and the switching table by a fuzzy logic system in order to overcome these handicaps. Furthermore, the sampling frequency is another parameter which must be investigated to reduce the commutation losses and the harmonic stator current waves. The second purpose of this paper is to reduce the execution time using a Field Programmable Gate Array (FPGA). The FPGA is able to execute the Fuzzy DTC (FDTC) with a higher sampling frequency, thanks to its parallel processing relative to the Digital Signal Processor (DSP). The FDTC model is verified by simulation using system generator tool and validated by experimentation utilizing an FPGA Virtex 5. Thus, excellent performances at low processing time are obtained using the Xilinx FPGA Virtex 5.