Identification Design for Dynamic Voltage Restorer to Mitigate Voltage Sag Based on the Elliptical Transformation

In this article, a new identification tool for dynamic voltage restorer (DVR) is proposed to achieve flexible active and reactive power dispatches during sags. The presented entirely relies on the theoretical analysis of elliptical transformation, marks are determined different injections by using one set digital codes. Besides, two parameters in accurate mathematical description current references, which guarantees continuous delivery selecting proper values. chief advantages include smooth transition state changes deliveries elimination oscillations. Then, characteristics corresponding dispatch analyzed reveal feasibility given references. Finally, experimental tests utilizing laboratory prototype used verify flexibility control schemes.