Publication Date


Document Type


Committee Members

James Menart, Ph.D. (Advisor); Marian K. Kazimierczuk, Ph.D. (Committee Member); Hong Huang, Ph.D. (Committee Member)

Degree Name

Master of Science in Renewable and Clean Energy Engineering (MSRCE)


Renewable and clean energy has been the driving force behind the booming storage industry. The need for producing energy from clean and quickly replenishable energy sources has never been as high as it is now. However, renewable energy only supplies a little over a quarter of the world’s electricity needs and much less of the world’s total energy requirements. One reason is the intermittent nature of renewable energy. Inexpensive and convenient storage technologies are required to solve this issue. It is believed that batteries offer the most viable solution to conquer the problem of renewable energy intermittency. To aid the development of coupling renewable energy systems with battery storage systems, accurate and fast computer codes for simulating battery performance are required. The main goal of this work is to develop such a computer code. So that the developed computer code can be coupled to a Wright State solar energy system code called Solar_PVHFC in the future, it was desired that this computer code have low computational times, simulate transient battery operation, and be reasonably accurate. To satisfy these requirements, it was decided to use an equivalent electrical circuit (EEC) model to simulate battery operation. A question that arises from this decision is, what equivalent electrical circuit should be used? There are many equivalent electrical circuit models for batteries available in the literature. This question was answered by developing a computer program to solve any electrical circuit. Specifically, a MATLAB computer code was developed that can simulate the transient performance of any electric circuit built of voltage sources, current courses, resistors, capacitors, and inductors. This thesis will present the details of this computer model. It will show comparison results that verify that this developed computer model was programmed correctly. It will show the battery terminal voltage response of two EECs and compare the computational results obtained from the developed model to the experimental results of the EECs. It will also show survey-type results illuminating which electrical components are the most important in a battery equivalent electrical circuit containing a constant phase element (CPE).

Page Count


Department or Program

Department of Mechanical and Materials Engineering

Year Degree Awarded


Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.