Improving the Quality of Power by Compensating Voltage Sag Compensation using Dynamic Voltage Restorer

Abstract

Consumers and utility companies alike may be negatively impacted by poor power quality. The integration of renewable energy sources, smart grid systems, and extensive use of power electronics equipment has resulted in a slew of problems in modern electric power systems. It is possible that harmonics in current and voltage as well as voltage drop, and swell may cause harm to sensitive electronic equipment. Interference from other sections of the system may cause input voltage changes in these devices. For this reason, in today's technologically advanced world, the reliability and safety of the power system depend on power quality. DVR, or Dynamic Voltage Restorer, is a D-FACTS (Distribution Flexible AC Transmission System) device that might be extensively used to address the challenges of the distribution grid's non-standard voltage, current, and frequency. By using Proportional Integral digital control signals as DVR, a new approach for reducing torque ripple has been created in this article. After that, control signals are supplied to the voltage source converter input of the brushless direct current motor's voltage source converter. This control approach reduces torque ripples. This aim is continuously met, and therefore the suggested model outperforms a few established techniques, such as FCS-MPC, PWM-MPC, and RSC, with the proposed Pulsating Proportional Integral Control (PPIC) based DVR. 3.2Nm average torque, 10.64 % torque ripple, 8.56I of RMS DC link current, 961.52 W power, 2333.9 rpm speed are achieved using the suggested approach.