MODELING AND CONTROL OF A MICROGRID USING A HYBRID ENERGY STORAGE SYSTEM WITH SUPERCAPACITORS
Ross, Michael J. Jr.
MetadataShow full item record
Lead-acid batteries have traditionally been used for energy storage in microgrid applications. Implementing an Energy Management System (EMS)-controlled supercapacitor (SC) and lead-acid battery hybrid energy storage system (HESS) has been shown to reduce operational costs by extending battery lifetimes. The SCs can be controlled to provide the high-frequency, power-dense component of the load power, which reduces the daily cyclical stress and state-of-charge (SOC) depletion of the lead-acid batteries; however, the HESS must be appropriately sized based on cost constraints, available power sources, and load demand. The enabling theory and design of a SIMULINK model of a DC microgrid are discussed in this thesis. The results obtained from this model illustrate the energy exchange between microgrid components, demonstrate some of the potential benefits of implementing a HESS, and provide useful data for battery and SC sizing. The DC microgrid model is scalable and can use any user-defined combination of source and load profiles. In islanded mode, the lead-acid battery and SC banks need to be unrealistically large to provide adequate power to the load. In grid-connected mode, the HESS sizing requirements are significantly reduced, and the overall energy savings of the system are improved.
RightsThis 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.
Showing items related by title, author, creator and subject.
Removal of direct current link harmonic ripple in single-phase voltage source inverter systems using supercapacitors Hernandez, Gabriel D. (Monterey, California: Naval Postgraduate School, 2016-09);For an Energy Management System (EMS)-controlled microgrid that uses a single-phase voltage source inverter (VSI) configuration to supply power for AC loads from DC energy storage devices, the DC link connecting the VSI ...
Hirsch, Charles Y. (Monterey, CA; Naval Postgraduate School, 2020-03);Sustainable power at the forefront of Department of Defense operations is paramount on the battlefield as well as at naval installations around the world, and microgrid technology enables the deployment of renewable energy ...
Anglani, Norma; Salvo, Salvatore R. Di; Oriti, Giovanna; Julian, Alexander L. (IEEE, 2020);A novel control strategy to manage the integration of a wind turbine and an energy storage unit to an existing oil and gas (O&G) stand-alone microgrid is the topic of this paper. The control strategy includes a primary and ...