• Thayyuru Himagiri
• B. Subba Reddy
• R. Maheswar Reddy

The still increasing penetration of grid connected photovoltaic (PV) systems, advanced active power control functionalities have been introduced. A reserve power control, where namely the active power from the PV panels is reserved during operation, is required for grid support. A cost-effective solution to realize the reserve power with two-stage grid-connected PV systems is proposed. The proposed solution routinely employs a maximum power point tracking control to estimate the available PV power and a constant power generation (CPG) control to achieve the reserve power. In this method, the solar irradiance and temperature measurements that have been used in conventional reserve power control schemes to estimate the available PV power are not required, and thereby, being a sensor less approach with reduced cost. At the grid side, the stored energy in the DC link is adaptively controlled to minimize the power fluctuation during the available PV power estimation process, where the excessed energy is temporarily stored in the DC link. Have been performed on a 3-kW two-stage single-phase grid-connected PV system.

Active power control, constant power generation (CPG) control, grid-connected power converters, maximum power point tracking (MPPT), reserve power control (RPC), photovoltaic (PV) systems.

"Two-Stage Grid-Connected PV System With Reserve Power Control Strategy ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.420-428, July-2018, Available :http://www.jetir.org/papers/JETIR1807214.pdf

"Two-Stage Grid-Connected PV System With Reserve Power Control Strategy ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp420-428, July-2018, Available at : http://www.jetir.org/papers/JETIR1807214.pdf