Analytical Modeling of Flux-Switching In-Wheel Motor Using Variable Magnetic Equivalent Circuits

Figure 5

Transversal cross-sections of flux tubes and their permeances: (a) 𝒫=𝜇𝐿𝜃/ln(𝑟₂/𝑟₁); (b) 𝒫=𝜇𝐿ln(𝑟₂/𝑟₁)/𝜃; (c) 𝒫=𝜇𝐿𝑥/ℎ; (d) 𝒫=2𝜇𝐿⋅ln[1+𝜋𝑥/(𝜋𝑟+2ℎ)]/𝜋; (e) 𝒫=𝜇𝐿⋅ln[1+2𝜋𝑥/(𝜋𝑟₁+𝜋𝑟₂+2ℎ)]/𝜋; (f) 𝒫=2𝜇𝐿𝑥/(𝜋𝑤+2ℎ).

(a)  

(b)

(c)

(d)

(e)

(f)