Circuit Configuration and Control of a Grid-tie Small-Scale Wind Generation System for Expanded Wind Speed Range - 2017

PROJECT TITLE :

Circuit Configuration and Control of a Grid-tie Small-Scale Wind Generation System for Expanded Wind Speed Range - 2017

ABSTRACT:

During this paper, a grid-tie small-scale wind generation system is proposed with innovations in each of the topology and also the controller. A unique high step-up zero-current turning-on soft-switching rectifier and a storage branch are used to boost the low-wind-speed (LWS) and high-wind-speed (HWS) performances. The optimized LWS operation is guaranteed by the rectifier, the battery pack, and film capacitors. The enhanced HWS performance is fulfilled by parallel operation of the inverter and also the battery charge converter. Furthermore, the management strategy aiming at improving overall system efficiency and increasing battery lifespan and exploitable wind speed range is adopted. A state-of-charge (SOC) control technique is used and ensures SOC is most often inside a vary of twenty-80%. The proposed technique not only slows down the battery capacity fading by SOC scope limitation and by charge/discharge current restriction, however additionally provides safety capability margin in case of maximum HWS condition. Also, a easy however reliable dead-zone controller is applied on the battery charge/discharge converter to manage the dc-link voltage. Finally, the theoretical analysis and the control methodology are verified by simulations, experiments, and are tested in the $64000 wind field.

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