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ANALYSIS AND SIMULATION OF
PHOTOVOLTAIC SYSTEMS
INCORPO!TING BA"ERY ENERGY
STO!GE
Oluwaseun M. Akeyo
University of Kentucky:.34.3460D:28,47.:8
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ANALYSIS AND SIMULATION OF PHOTOVOLTAIC SYSTEMS
INCORPORATING BATTERY ENERGY STORAGE
THESIS
A thesis submitted in partial fulfillment
of the requirements for the degree of
Master of Science in Electrical
Engineering in the College of Engineering
at the University of Kentucky
By
Oluwaseun Akeyo
Lexington, Kentucky
Director: Dr. Dan M. Ionel, Professor and L. Stanley Pigman Chair in Power
Lexington, Kentucky 2017
Copyright c
Oluwaseun Akeyo 2017

ABSTRACT OF THESIS
ANALYSIS AND SIMULATION OF PHOTOVOLTAIC SYSTEMS
INCORPORATING BATTERY ENERGY STORAGE
Solar energy is an abundant renewable source, which is expected to play an increas-
ing role in the grid’s future infrastructure for distributed generation. The research
described in the thesis focuses on the analysis of integrating multi-megawatt photo-
voltaics systems with battery energy storage into the existing grid and on the theory
supporting the electrical operation of components and systems. The PV system is di-
vided into several sections, each having its own DC-DC converter for maximum power
point tracking and a two-level grid connected inverter with different control strategies.
The functions of the battery are explored by connecting it to the system in order to
prevent possible voltage fluctuations and as a buffer storage in order to eliminate the
power mismatch between PV array generation and load demand. Computer models
of the system are developed and implemented using the P SCADT M /EMT DCT M
software.
KEYWORDS: photovoltaics, battery, energy storage, inverter, solar pump, IEEE 14
bus.
Author’s signature: Oluwaseun Akeyo
Date: July 31, 2017

ANALYSIS AND SIMULATION OF PHOTOVOLTAIC SYSTEMS
INCORPORATING BATTERY ENERGY STORAGE
By
Oluwaseun Akeyo
Director of Thesis: Dr. Dan M. Ionel
Director of Graduate Studies: Dr. Caicheng Lu
Date: July 31, 2017