Author(s) :

I. Sabareesa Priya, M. E. Shajini Sheeba, J. Jasmine

Conference Name :

International Conference on Modern Trends in Engineering and Management (ICMTEM-24)

Abstract :

This paper presents the design and performance analysis of a three phase single stage solar photovoltaic integrated unified power quality conditioner (PV UPQC). The PV UPQC comprises shunt and series connected voltage compensators linked back to back with a common DC link. The shunt compensator serves a dual role, extracting power from the PV array and compensating for load current harmonics. An improved synchronous reference frame control, based on a moving average filter, is employed for extracting the load active current component, enhancing the PV UPQC’s performance. The series compensator addresses grid side power quality issues such as voltage sags and swells by injecting voltage in phase or out of phase with the point of common coupling (PCC) voltage during sag and swell conditions, respectively. This proposed system harnesses the benefits of clean energy generation while enhancing power quality. The steady state and dynamic performance of the system are evaluated through simulations in Matlab Simulink under nonlinear load conditions. Furthermore, the system’s performance is validated using a scaled down laboratory prototype subjected to various disturbances including load unbalancing, PCC voltage sags/swells, and irradiation variations.

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