Design of dynamic voltage restorer in the power quality improvement for voltage problems

• Published in: Applied nanoscience Vol. 13; no. 4; pp. 2985 - 2995
• Main Authors: Venkatesh, A., Kumar, P. Suresh
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-04-2023; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Compensators; Digital video recorders; Distributed generation; Electric potential; Harmonic distortion; Materials Science; Membrane Biology; Nanochemistry; Nanotechnology; Nanotechnology and Microengineering; Original Article; Quality improvement; Voltage; Voltage regulators; AC supply; Micro grid; Dynamic voltage restorer
• ISSN: 2190-5509; 2190-5517
• DOI: 10.1007/s13204-022-02364-2

Solutions for customers with delicate loads and quick voltage regulation are essential. Protect important loads from supply-side voltage disturbances with a power electronic converter-based dynamic voltage restorer (DVR). In the case of severe sag and swell, DVR is a well-known, low-cost therapy option. On the basis of its maximum voltage injection and active power contribution, a DVR’s mitigation ability is determined. Standard DVRs use batteries as their DC input, but batteries are cumbersome, expensive, and hazardous to dispose of after they’ve been used. This limits compensation for DVRs. It is recommended to increase the DVR’s VA rating by 1.5 times by increasing the DC connection voltage to 1.5 times the microgrid voltage regulation and quality improvement methods are proposed in this study. As a series voltage compensator, these solutions incorporate a dynamic voltage restorer (DVR) for regulation, quality improvement, and reduction of harmonic distortion. Continuous adjustment of the DVR output voltage is proposed to reduce harmonic distortions while minimising network bus voltage changes. As a result of this strategy, the peak demand voltage loss is compensated for. In constant impedance loads, voltage rise reduces network demand, resulting in lower branch currents and losses.