A current output hard-switched full bridge DC/DC converter for wind energy conversion system

This paper presents a current output hard-switched full-bridge (HSFB) converter with an intermediate high frequency transformer as an option of a wind energy conversion system (WECS). The wind turbine simulator, based on an induction machine driving a three-phase permanent magnet synchronous generator, is built to simulate the real wind turbine characteristics. Comparative analysis of electrical stresses on the switch of the boost converter and the current output HSFB converter is carried out at different wind speeds and maximum operational power point based on their mathematical models. The control system of the current output HSFB is illustrated. Simulation and experimental results demonstrate the feasibility and stability of a current output HSFB converter based WECS.