Performance Evaluation of PV Integrated DSTATCOM Based on Complex Variable Filter

Extraction of fundamental active component of load current is the key for any distribution static compensator (DSTATCOM). In this study, a control technique based upon complex variable filter and second order generalized integrator (SOGI) has been used for single phase photovoltaic integrated distribution static compensator (PV-DSTATCOM). Active component of load current is extracted with the help of a filter and it is used to control the pulses of DSTATCOM. A two stage system consisting of a full bridge boost converter in cascade with an inverter is taken to model a DSTATCOM. Power is drawn maximally from the PV panel. Dynamic conditions like step load change and linear irradiation change have been employed to study the performance of the system for this control strategy.