Rapid Prototyping and Hardware-In-the-Loop Verification of Enhanced Sliding Mode Control of an Asynchronous Machine Using a Xilinx System Generator and an FPGA-Zynq Board

Abstract

This article describes rapid prototyping using the Xilinx system generator (XSG) of a direct field oriented control (DFOC) strategy based on improved super twisting sliding mode controllers (ISTSMCs) of an asynchronous machine to succeed a hardware implementation on a field programmable gate array (FPGA) board. The main goal is to enhance regulation loops governing rotor speed, rotor flux, and stator current components within the classical DFOC structure. These ISTSMCs replace integral proportional controllers, resulting in improved system dynamics, faster speed and torque responses, and heightened robustness against load and rotor resistance variations, surpassing other control methods. Additionally, the article aims to implement this DFOC-ISTSMC method on an FPGA board to reduce control system sampling time and loop delays, leveraging the FPGA’s parallel processing capabilities. The hardware architecture is designed using XSG in the MATLAB/Simulink environment, enabling effective simulation, testing, discrete algorithm creation, and VHDL code generation for FPGA implementation via the hardware-in-the-loop (HIL) process. Assessment involves digital simulation studies and HIL processes using XSG with a Xilinx FPGA Zynq 7000 under MATLAB/Simulink, demonstrating improved system performance, reduced time delays, and efficient FPGA utilization. This approach validates the effectiveness of the proposed DFOC-ISTSMC algorithm in enhancing control strategy for asynchronous machines.

Keywords:

• rapid prototyping
• Xilinx system generator
• field programmable gate array
• asynchronous machine
• super twisting sliding mode controller

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Rakia Tarkhani

Rakia Tarkhani received her master of research degree from ISSAT of Kasserine, University of Kairouan, Tunisia, in 2021. She is currently pursuing a Ph.D. degree at the Faculty of Science at the University of Monastir, Tunisia. She is a member of the Laboratory of Automatic, Electrical Systems, and Environment (LASEE) at the National Engineering School of Monastir, University of Monastir, Tunisia. She can be contacted at email: [email protected]. Her current research interests include rapid prototyping and reconfigurable architecture for real-time control applications of electrical systems, power electronics, motor drives.

Saber Krim

Saber Krim received the electrical engineering diploma, the master, and the Ph.D. degrees in 2011, 2013, and 2017, respectively, all in electrical engineering from the National Engineering School of Monastir, University of Monastir, Tunisia. He is currently an assistant professor of electrical engineering with the Technology Department at Higher Institute of Applied Sciences and Technologies of Kasserine, University of Kairouan, Kairouan, Tunisia. He is a member of the Laboratory of Automatic, Electrical Systems and Environment (LASEE), National Engineering School of Monastir, University of Monastir, Tunisia. He can be contacted at email: [email protected]. His current research interests include rapid prototyping and reconfigurable architecture for real-time control applications of electrical systems, power electronics, motor drives, solar and wind power generation.

Mohamed Faouzi Mimouni

Mohamed Faouzi Mimouni received his mastery of science and DEA from ENSET, Tunisia, in 1984 and 1986, respectively. In 1997, he obtained his doctorate degree in electrical engineering from ENSET, Tunisia. He is currently a full professor of electrical engineering with Electrical Department at the National School of Engineering of Monastir. He has served on the technical program committees for several international conferences. He can be contacted at email: [email protected]. His specific research interests are in the area of power electronics, motor drives, solar and wind power generation.