Simulation-Based Comparison of PID with Sliding Mode Controller for Matrix-Converter-Based Dynamic Voltage Restorer under Variation of System Parameters to Alleviate the Voltage Sag in Distribution System

Abstract

A constant power supply is a basic need for each consumer due to the increase in sensitive equipment day by day. As per IEEE standards, a 10% reduction in voltage from the supply voltage is not acceptable and may cause the failure of equipment. Previously, different techniques have been used to alleviate the voltage sag, such as STATCOM, DSTATCOM, SVC, and shunt capacitors, but these devices are connected in parallel, which compensates for the low value of voltage sag, and they have high maintenance costs involved. Compensation for the low and high values of voltage sag is possible through a series-connected device such as a dynamic voltage restorer. In this paper, a matrix converter is presented for DVR to convert AC to AC voltage directly and free from batteries, capacitors, and multiple conversions as needed in a voltage source inverter, resulting in a reduced cost of DVR topology. The DVR is meaningless in the absence of a controller, so it is necessary to select a suitable controller for the satisfactory operation of the DVR under a variation of system parameters. In this paper, the performance of a linear PID controller is analyzed and compared with a nonlinear controller, such as a sliding-mode controller, under variation of power system parameters inorder to select a robust controller that performs satisfactorily for DVR. Earlier trial-and-error methods were used to obtain the parameters of PID gains, but they require a large time to obtain the parameters of the PID gains and there is a chance of inaccuracy. A genetic algorithm was used to obtain the gain parameters, but it has more convergence time and the particle swarm optimization technique has involves less reliability. In this research paper, the sliding surface coefficient parameters such as and Ki for the PI sliding surface of SMC and PID gains are taken through an ant colony algorithm to obtain the robustness of the controllers. The purpose of this paper is to introduce the best DVR topology with reduced cost. MATLAB simulation software was utilized to analyze the performance of the DVR with PID and SMC controllers under different fault conditions and also the THD% of proposed controllers was analyzed through FFT.

PEMFC Current Control Using a Novel Compound Controller Enhanced by the Black Widow Algorithm: A Comprehensive Simulation Study

“…Previous studies have achieved the main control objectives and thus have a massive impact on PEMFC control. For instance, the PI and PID controllers are considered the most popular controllers in the industry because of their simplicity and ease of implementation [13]. They are widely applied in control systems, including the control of pressure, temperature, humidity, etc.…”

Design of LC Filter with Shunt Damping Resistor for Non-linear Load to Reduce the Total Harmonic Distortion in Load Voltage

“…Recently the utilization of non-linear loads has increased in the distribution system and every consumer of electricity demands for consistent power supply to run their loads properly but due to power quality issues such as harmonics, voltage sag, voltage swell, flickering, and interruption of power supply which badly affected the power quality and may result in equipment damages, and financial loss [1]. Non-linear loads in power systems, such as rectifiers, inverters, and variable speed drives, introduce harmonics that distort the load voltage waveform, leading to increased Total Harmonic Distortion (THD) [2]. High THD in power systems can cause a myriad of problems, including overheating of equipment, reduced efficiency, and interference with communication lines [3].…”

“…Power quality has turned into an essential issue for additional reasons such as the financial need for the organizations to build their intensity, the broad utilization of hardware which is delicate to voltage disturbing influences and creates stress itself, and freedom of the power market [7]. In this unique situation, it is fundamental for the utility and the customers to prevent and identify power quality issues and to make reachable arrangements [2], and [8]. The voltage harmonic is one of the power quality problems that are generated due to the applications of non-linear loads [9], so it is very essential to improve the harmonic distorted waveform to improve the quality of output voltage otherwise it will affect the power system reliability, increase in the transformer losses, increase in line losses, and frequently faults are generated which results in poor utility revenue, and reduction in the production of industries [10].…”

“…In this paper, an LC filter with a damping resistor is designed to control the output voltage of the non-linear load. This literature review examines the design and effectiveness of LC filters with shunt damping resistors in reducing THD in load voltage, highlighting key research findings and methodologies [2]. Chen et al (2020) presented research [15], which focused on optimizing the damping resistor value to achieve the best trade-off between THD reduction and power loss.…”

Enhancing the Functionality of a Grid-Connected Photovoltaic System in a Distant Egyptian Region Using an Optimized Dynamic Voltage Restorer: Application of Artificial Rabbits Optimization

“…Therefore, it is crucial to develop sustainable and equitable urban policies that address the challenges of urbanization while leveraging its potential benefits. Urban regions are expected to house 70 of every 100 persons globally by the year 2050 [ 3 , 6 , 8 ].…”