Oregon State University

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MS Final Examination – Arne Bostrom


Thursday, June 13, 2013 1:00 PM - 3:00 PM

Rapid Bidirectional Power Flow of Supercapacitor Bank Energy Storage through Grid-Tied Inverters for Improved Renewables Integration
The variable output of renewables such as solar, causes fluctuations of power flow that can adversely affect power system operation, especially at high levels of penetration. The coordination of multiple energy storage solutions can mitigate integration challenges by providing a buffer from variable renewables. This thesis presents the integration of supercapacitor energy storage through a grid-tied inverter for voltage and power flow stabilization. This thesis will demonstrate how supercapacitors can be used in combination with other energy storage solutions such as batteries to enhance the overall grid-tied energy storage solution. Control algorithms are developed for the supercapacitors to enhance the dynamic security of the power system. In addition, a key parameter that will be investigated is the effective supercapacitor energy rating and state of charge. The thesis will include both simulation and experimental validation of the rapid bidirectional power flow of supercapacitor energy storage systems, as well as the implementation of these devices through an in-lab grid to smooth high ramp rate events seen in solar data.

Major Advisor: Annette von Jouanne
Co-Major Advisor: Alex Yokochi
Committee: Ted Brekken
GCR: William Warnes 


Kelley Engineering Center (campus map)
1007
Nicole Thompson
1 541 737 3617
Nicole.Thompson at oregonstate.edu
Sch Elect Engr/Comp Sci
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