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Supervisor control for a stand-alone hybrid generation system using wind and photovoltaic energy

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2 Author(s)
F. Valenciaga ; Fac. of Eng., La Plata Nat. Univ., Argentina ; P. F. Puleston

A comprehensive supervisor control for a hybrid system that comprises wind and photovoltaic generation subsystems, a battery bank, and an ac load is developed in this paper. The objectives of the supervisor control are, primarily, to satisfy the load power demand and, second, to maintain the state of charge of the battery bank to prevent blackout and to extend the life of the batteries. For these purposes, the supervisor controller determines online the operation mode of both generation subsystems, switching from power regulation to maximum power conversion. Decision criteria for the supervisor based on measurable system variables are presented. Finally, the performance of the supervisor controller is extensively assessed through computer simulation using a comprehensive nonlinear model of the plant.

Published in:

IEEE Transactions on Energy Conversion  (Volume:20 ,  Issue: 2 )