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Dynamic Modeling and Operation Strategy for a Microgrid With Wind and Photovoltaic Resources

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2 Author(s)
Sungwoo Bae ; Deptartment of Electrical and Computer Engineering, The University of Texas, Austin, USA ; Alexis Kwasinski

This paper presents a dynamic modeling and control strategy for a sustainable microgrid primarily powered by wind and solar energy. A current-source-interface multiple-input dc-dc converter is used to integrate the renewable energy sources to the main dc bus. Potential suitable applications range from a communication site or a residential area. A direct-driven permanent magnet synchronous wind generator is used with a variable speed control method whose strategy is to capture the maximum wind energy below the rated wind speed. This study considers both wind energy and solar irradiance changes in combination with load power variations. As a case study a 30-kW wind/solar hybrid power system dynamic model is explored. The examined dynamics shows that the proposed power system is a feasible option for a sustainable microgrid application.

Published in:

IEEE Transactions on Smart Grid  (Volume:3 ,  Issue: 4 )