Capacitor failure modes
Power cap sizing
The green boxes contain values which may be changed.
The software modifies erroneous proposed values.
The first step in sizing supercapacitor energy storage is the determination of the energy requirement,
taking into account the following corrections:
This calculation step takes into account the performances of the technology which depends from one manufacturer to the other.
Typical values are 2.5 Vdc, 5.3 Wh/kg and 8'566 W/kg.
It considers also that a part of the energy is dissipated
inside the component in the internal resistance (cf "RAGONE").
A distribution of 12 application voltages (close to Un) may be given in the first column
In the second column the corresponding application temperature must be defined
In the third column the duration of each collicitation must be defined in %.
You have to adjust the number of cells in order to get an acceptable lifetime.
Cell Nr in series :
Expected life duration [Hours]: 1500
Component chosen: CAP350F
Correction for the thermal dissipation
Choose the Charge method in your application:
Charge method chosen: Constant current
Voltage [V] / Current [A] / Power [W]
Source: Garmanage: Roland Gallay