Analysis of an Eddy Current Brake with FEMM

2 eddycurrentbrake.nb
In[9]:= BHmax = 40; H∗ Energy product of the magnet in MGOe ∗L
pp = 25 ∗mm; H∗ Pole pitch of the magnets ∗L
wm = 20 ∗mm; H∗ Magnet width ∗L
tm = 5 ∗mm; H∗ Magnet thickness ∗L
tb = 5 ∗mm; H∗ Back iron thickness ∗L
tp = 2.5 ∗mm; H∗ Conductive plate half−thickness ∗L
g = 1 ∗mm; H∗ Air gap length between magnet and plate ∗L
σ = 30;H∗ Plate conductivity in MSêm ∗L
h = 100 ∗mm; H∗ Depth of magnet array ∗L
ε = 20 ∗mm; H∗ Plate overhang on either side of the magnets ∗L
ü Derived Quantities
Mechanical frequency of the magnet array
In[19]:= β = π êpp;