Optimization of grid-connected wind and battery energy storage system

Document Type

Conference Proceeding

Publication Date



Department of Electrical and Computer Engineering


This paper implements optimal control strategies in the scenario of a battery energy storage system connected to the electric grid together with a wind turbine. A simplified model for a battery is first developed, along with a state equation model of the system. Optimal control is used to minimize the difference between the actual battery power and the given reference power. The battery is connected to the grid through a buck converter, and the optimal control solution is used to calculate the necessary duty cycle to achieve the desired results. Inequality constraints are added to ensure that the simulation is a realistic model of the behavior of a battery. The control strategy is also demonstrated experimentally with a battery and sample grid system.

Publisher's Statement

© 2014 IEEE. Publisher’s version of record: https://doi.org/10.1109/PECI.2014.6804552

Publication Title

2014 IEEE Power and Energy Conference at Illinois, PECI 2014