A New Model of Ultracapacitors Based on Fractal Fundamentals

Figure 14

The Comparison between measured numbers and calculated numbers in Nyquist plot.

(a) Nyquist plot of a 3.3 F ultracapacitor (values for the model calculation: 𝑅₁=0.1151Ohm, 𝐶₁=3.634F, 𝑅₂=0.08732Ohm, 𝑅=0.004589Ohm, and 𝐶=0.03791F)

(b) Nyquist plot of a 2 F ultracapacitor (values for the model calculation: 𝑅₁=0.07529Ohm, 𝐶₁=2.063F, 𝑅₂=3.564Ohm, 𝑅=0.02241Ohm, and 𝐶=0.03445F)