Source code for pyleecan.Methods.Slot.SlotW24.comp_surface_active

# -*- coding: utf-8 -*-

from numpy import pi, sin, arcsin


[docs]def comp_surface_active(self): """Compute the Slot inner surface for winding (by analytical computation) Parameters ---------- self : SlotW24 A SlotW24 object Returns ------- Swind: float Slot inner surface for winding [m**2] """ Rbo = self.get_Rbo() point_dict = self._comp_point_coordinate() if self.is_outwards(): Rint = Rbo Rext = abs(point_dict["Z2"]) else: Rint = abs(point_dict["Z2"]) Rext = Rbo # Surface of a slot pitch Sring = (pi * Rext ** 2 - pi * Rint ** 2) * 1 / self.Zs # Tooth surface St = self.H2 * self.W3 alpha_bore = 2 * arcsin(self.W3 / (2 * Rint)) Sarc_bore = (Rint ** 2.0) / 2.0 * (alpha_bore - sin(alpha_bore)) alpha_yoke = 2 * arcsin(self.W3 / (2 * Rext)) Sarc_yoke = (Rext ** 2.0) / 2.0 * (alpha_yoke - sin(alpha_yoke)) if self.is_outwards(): return Sring - (St + Sarc_yoke - Sarc_bore) else: return Sring - (St + Sarc_yoke - Sarc_bore)