Super-Twisting Sliding Mode Control to Improve Performances and Robustness of a Switched Reluctance Machine for an Electric Vehicle Drivetrain Application

Abstract

In electric vehicles, performances of electric vehicle drivetrains depend on the electric machine and the control. Switched Reluctance Machines (SRMs) are today an alternative to rare earth magnets machines such as Permanent Magnet Synchronous Machine (PMSM), which is used in the vehicle drivetrain. Because of its high nonlinear behavior, the classical control designed for SRMs is not sufficient to obtain good performances. The objective of this paper is to make performance and robustness comparisons of the designed robust controllers considering the high nonlinear behavior of SRMs. Sliding Mode Control (SMC) and Super-Twisting Sliding Mode Control (STSMC) are developed and validated by simulation for the velocity control loop and the current control loops of the control strategy. However, an evaluation of their performances compared to classical control based on PI controllers is carried out. For a robustness comparison, a variation of SRM parameters is carried out by simulation using the three controllers. Finally, an experimental validation on a developed test bench using the three controllers is conducted to show that Super-Twisting Sliding Mode Control (STSMC) is the best in terms of performances and robustness for an electric vehicle application.

Sliding Mode Speed Control in Synchronous Motors for Agriculture Machinery: A Chattering Suppression Approach

“…Control voltages are in the same situation in Figure 12b,c. The approximation arc tangent and the general approximation (10) are implemented, revealing a favorable behavior in the system's response. The speed response, showcased in Figure 13a, distinctly demonstrates good behavior.…”

“…In this way, improving system response performance by strategies such as fast non-singular terminal sliding mode and adding state observers allow for faster system response [9]. In addition to this proposal, Super-Twisting Sliding Mode Control, such as that proposed in [10], is a good choice for developing speed control strategies in electrical machines. However, this control must still solve the chattering problem.…”

Fuzzy Super-Twisting Sliding Mode Controller for Switched Reluctance Wind Power Generator in Low-Voltage DC Microgrid Applications

“…However, SMC has drawbacks, including an undesirable chattering effect, which can be detrimental to the system. To overcome this, second-order sliding mode algorithms have been explored, inheriting SMC properties while mitigating chattering and high-frequency vibrations [32]. Nonlinear Super-Twisting Sliding Mode Control (STSMC) have recently gained attention for various systems.…”

“…STSMC mitigates chattering and vibrations, reducing mechanical stresses in the system. Previous works, such as those in [32,33], analyze second-order sliding mode control with the supertwisting algorithm. The objective is to explore the theoretical background of second-order sliding mode control, present new findings, and to show that the STSMC approach is an effective solution to the above-cited drawbacks and may constitute a good candidate for solving a wide range of important practical problems…”