The Hollow Cylinder Radial Flux Permanent Magnet (or Hollow Cylinder Radial Flux) component models a hollow cylinder permanent magnet with length $l$, inner radius $r_i$, outer radius $r_o$, and sector angle $\mathrm{\theta }$. The flux flow is radially through the sector.

The material parameter specifies the name of a record of class Hard Magnetic Material, which defines the magnetic material. A record of that class, with the corresponding name, must exist in the model, either at the same or higher level. Records of typical materials are in the palette Magnetic > Material > Hard.

The Use default material boolean parameter, when true, sets the name of the material parameter to HardMaterial1, which corresponds to the default name assigned to a record of the appropriate class.  To use a different name, uncheck the box and enter the name in parameter that appears.

$\mathrm{\Phi }\={\mathrm{\Phi }}_p\=-{\mathrm{\Phi }}_n$

${\mathrm{\Phi }}_{\max }\=V_{m\,\max }{G}_m$

$V_m\=V_{m_p}-V_{m_n}\=V_{m\,\max }\left(1\+\frac{\mathrm{\Phi }}{{\mathrm{\Phi }}_{\max }}\right)$

$V_{m\,\max }\=\mathrm{material.H\_cB}\left(r_o-r_i\right)$