TITLE:
Large Prismatic Lithium Iron Phosphate Battery Cell Model Using PSCAD
AUTHORS:
Garo Yessayan, Dipesh D. Patel, Ziyad M. Salameh
KEYWORDS:
PSCAD; MATLAB; Curve-Fitting; Look-Up Table; Discharge Rate; Temperature
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.2,
February
21,
2014
ABSTRACT:
Presently, there are mainly two problems that
prevent Electric Vehicles (EVs) from becoming popular against the Internal Combustion Engine Vehicles (ICEVs),
namely: short range and too long to recharge the battery pack of the EV.
Due to this, battery development is a crucial aspect to improve the performance
of EVs. This progress requires dependable computer aided designs to model the
characteristics of a battery accurately and reliably. This paper uses Power
Systems Computer Aided Design (PSCAD) to create an equivalent runtime circuit
model to observe the qualities of the Lithium Iron Phosphate battery cell under
discharge at different temperatures. The model is a 3-R-C branch runtime
equivalent circuit model. In order to find the fixed parameters of the circuit,
MATLAB was used to implement basic current voltage characteristics. 3-D tables
have been used in PSCAD to implement the State of Charge (SOC) and temperature
dependent circuit parameters of the model. Once the simulations for all
temperatures were completed, the average marginal error between measured and
simulated terminal voltage came to be 2.1%, therefore making PSCAD an accurate
simulation tool for modeling equivalent circuits of different batteries.