Here, we introduce a brand - new topology, but easy and efficient, for a grid-linked windphotovoltaic (PV) cogeneration system. A permanent magnet synchronous generator-primarily based totally full - scale wind turbine is interfaced to the utility-grid through back-to-back (Bt-B) voltage-supply converters (VSCs). A PV sun generator is at once linked to the dc-hyperlink capacitor of the B-t-B VSCs. No dc/dc conversion stages are required, and subsequently the system performance is maximized. The proposed topology capabilities an unbiased most strength factor monitoring for each the wind and the PV turbines to maximise the extraction of the renewable energy. The certain small signal fashions for the system additives are evolved to look at the general stability. The effect of the utility-grid faults at the overall performance of the proposed system is likewise evaluated. Nonlinear time-domain simulation consequences below different running situations are supplied to validate the effectiveness of the proposed topology.