Microgrid control strategy utilizing thermal energy storage with renewable solar and wind power generation
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Authors
Hawxhurst, Kevin L.J.
Subjects
microgrid
control strategy
renewable energy
thermal storage
multi-physics
end-use energy
control strategy
renewable energy
thermal storage
multi-physics
end-use energy
Advisors
Gannon, Anthony
Holmes, Andrea
Date of Issue
2016-06
Date
16-Jun
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
As part of the Department of Defense's exploration into alternative energy solutions, this research focused on developing and implementing a control strategy for a microgrid system that was developed using a multi-physics energy approach. The objective was to demonstrate a microgrid system that more effectively uses renewable energy based on the end-use application of energy. The NPS Integrated Multi-Physics Renewable Energy Laboratory microgrid system was designed primarily for heating and cooling applications and utilizes thermal storage capabilities. A novel control strategy was also implemented to decrease the need for backup electrical power. The control strategy matches load demand from a chiller and heater to power generation from renewable solar and wind resources. Energy is stored as ice for cooling applications and in high temperature ceramic bricks for heating applications. A controller was designed using MATLAB and successfully implemented the desired control strategy. This was challenging as communication between the controller, the microgrid, the loads, and the thermal storage devices had to be established across multiple architectures. Using MATLAB, the controller operated nearly continuously for six months, collecting data for analysis. This research proves that the end-use energy design concept works by putting in place a working demonstration plant.
Type
Thesis
Description
Series/Report No
Department
Mechanical and Aerospace Engineering
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
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Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.