• T. ANIL KUMAR
• S.SRIDHAR

a new control strategy for an efficient multi-input transformer-coupled bidirectional dc–dc converter for power flow management in a grid-connected hybrid photovoltaic (PV)–wind-battery-based system is presented in this paper. A transformer-coupled boost half-bridge converter is used to harness power from wind, while a bidirectional buck– boost converter is used to harness power from PV along with battery charging/discharging control. A single phase NPC Inverter is used for feeding ac loads and interaction with the grid. The proposed system aims to satisfy the load demand, manage the power flow from different sources, inject the surplus power into the grid, and charge the battery from the grid as and when required. Also, the proposed converter architecture has reduced number of power conversion stages with less component count and reduced losses compared with existing grid-connected hybrid systems. This improves the efficiency and the reliability of the system. Simulation results obtained using MATLAB/Simulink show the performance of the proposed control strategy for power flow management under various modes of operation

Terms— buck-boost converter, full-bridge bidirectional converter, hybrid system, MPPT, photovoltaic (PV), NPC inverter, WECS ,transformer-coupled boost dual-half-bridge bidirectional converter

"Grid Connected PV- Wind - Battery Based NPC with Multi Input Transformer Coupled Bi directional DC – DC Converter for Home Appliances", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.7-14, January-2019, Available :http://www.jetir.org/papers/JETIR1901A02.pdf

"Grid Connected PV- Wind - Battery Based NPC with Multi Input Transformer Coupled Bi directional DC – DC Converter for Home Appliances", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp7-14, January-2019, Available at : http://www.jetir.org/papers/JETIR1901A02.pdf