Sliding mode controller‐based voltage source inverter for power quality improvement in microgrid

The constant changes in the load power lead permanently to a power mismatch between the power generation and the power consumption. So, the system frequency due to the power imbalance deviates from the nominal value. Consequently, a control loop should be implemented to stabilize the system frequency whenever a load change occurs. This paper presents a new super‐twisting sliding mode control methodology for obtaining an optimal frequency performance in a multi‐pool system. The paper presents a three‐pool system for frequency deviation problems using an optimal gain Super Twisting Sliding Mode Controller (STSMC), which regulates the frequency change and the line power change to zero in a minimal time. The extent of the excellence of the study proposed is evaluated by comparing it with three Benchmark classical controllers, which are the Tilt‐Integral‐Derivative (TID), Proportional‐Integral‐Derivative (PID), and Fractional‐Order PID (FOPID). The parameters of the four controllers are determined by a proposed physical meta‐heuristic optimization technique called Transient Search Optimizer (TSO), inspired by the dynamic behaviour in the electrical circuits comprising storage elements such as capacitors and inductors during the switching actions. The system simulation is performed, and the STSMC proved overwhelming superiority over other controllers, as it deals better with the transient interval of the system response. Renewable Energy sources (RESs) like photovoltaic and wind energy systems are established, and the STSMC is tested with industrial and residential load models. Finally, energy storage devices such as batteries and superconducting magnetic energy storage are implemented to suppress the rapid fluctuations in the system response, and it succeeded in doing that as the system oscillations are greatly damped with the energy storage devices.

Section: Literature Surveymentioning

confidence: 99%

“…Still, it provides two more degrees of freedom for control which is the power of the integral and derivative terms as in Equation (33). The limits of the controller parameters are illustrated in Equations ( 34) and (35).…”

Section: Design Fopidmentioning

confidence: 99%

Optimal sliding mode control for frequency stabilization of hybrid renewable energy systems

Elsaied

Hameed

Hasanien

et al. 2023

“…However, main issues which were found in this article are related to the chattering phenomenon that is a disadvantage of SMC. The drawback of the SMC robustness is the inclusion of a discontinuous term that induces switching states and hence, the damage of actuators and energy consumption [36]. To end with the fast position tracking problem for the permanent magnet linear motor (PMLM) system under a chattering-reduced sliding mode control signal, a class of globally nonsingular sliding mode control (SMC) laws, called logarithmic sliding mode (LnSM) control, is proposed in ref.…”

Section: Introductionmentioning

confidence: 99%

High order sliding mode based drift algorithm for a commercial PEM fuel cell system

Derbeli

Saadi

Napole

et al. 2022

Conventional sliding mode controls (SMC) have always shown high robustness when applied to non-linear systems. However, their applications are still limited due to their high-frequency switching which could be a harmful phenomenon for different systems. As a solution, this paper proposes a high order SMC based drift algorithm. First, the algorithm is designed theoretically for a proton exchange membrane fuel cell system, where the stability study is proved with Lyapunov theory. Then, it was implemented in a commercial Heliocentris FC50 fuel cell system together with a power converter, a BK Precision 8500 programmable load, and a MicroLabBox dSpace DS1202. Comparative outcomes with the conventional SMC have shown the pros and cons of each scheme in terms of steady-state oscillations, convergence speed, and robustness.

“…In [6][7][8], comprehensive reviews of issues such as power management strategies and protection methods in MGs are presented. The overviews of the MGs control methods are given in [9][10][11][12][13]. Harmonics distortions are one of the main challenges which need to be resolved before MGs become commonplace.…”

Section: Introductionmentioning

confidence: 99%

A novel control approach for harmonic compensation using switched power filter compensators in micro‐grids

Khosravi

Abdolmohammadi

Bagheri

et al. 2021

This paper presents a new harmonic compensation system using filter compensator devices in a hybrid micro‐grid (MG). In order to reduce the amplitude of current and voltage harmonics, two separate systems, including a switched power filter compensator (SPFC) and a switched active power filter (SAPF) have been used in the AC side of the MG. The gain coefficients of both SAPF and SPFC modules (with different controllers) using meta‐heuristic algorithms are optimized and applied for three harmonic loops of voltage, current and controller error to obtain an optimal response for reducing the harmonic amplitude of current and voltage. The objective function, containing controller error, current and voltage harmonics is defined and followed by the optimized coefficients for the PID controller of each of the SAPF and SPFC modules. To find the best answer to this problem, the related gains using four meta‐heuristic algorithms, including artificial bee colony (ABC), particle swarm optimization (PSO), harmonic search (HS), and differential evolution (DE) are optimized and compared. The simulation results show that using the proposed method, the total harmonic distortion of the system can be significantly reduced.