BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI
buletinul institutului politehnic din iaşi - Universitatea Tehnică ...
buletinul institutului politehnic din iaşi - Universitatea Tehnică ...
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Bul. Inst. Polit. Iaşi, t. LVIII (LXII), f. 3, 2012 109<br />
There is a faster and error free method anyway doing this with the help of the<br />
computer.<br />
In the following we will present the modeling implementation steps with<br />
the help of the OpenModelica (OpenModelica, 2012) software package.<br />
The first step in modeling the battery was to model the equivalent<br />
electric circuit of tha battery. Since OpenModelica has a diagram development<br />
interface, and because the Modelica language (Modelica, 2012) is an equation<br />
based language, the implementation of the electrical model was straithforward.<br />
In the Fig. 4 can be seen the end result of the model.<br />
Fig. 4 – Battery model.<br />
The battery model is composed from different components, which are<br />
electrical components represented by: V oc that implements a signal voltage<br />
source, R int that implements a variable resistor, the internal rezistor of the<br />
battery, C that implements a capacitor, ISens that implements a measuring<br />
sensor for curent drawn.<br />
To complete the battery model it was necesarry to include non electric<br />
components such as: mCp implements a heat capacitor, Temp implements a<br />
temperature sensor, Soc implements the SOC parametter acording to Eq.<br />
(2), ExpDataVoc,ExpDataR implements experimental functions for open circuit<br />
voltage and respectively for internal rezistor of the battery