Patent ID: 9013083
Filing Date: 2015-04-21
Classification: H02K

Abstract:
1. A permanent magnet type rotary electric machine, comprising: a rotor including a rotor core and a plurality of permanent magnets; one or more conducting circuits each including: the permanent magnet type rotary electric machine detecting a rotation angle by measuring a difference in the armature current resulting from changing induced current flowing in the conducting circuits depending on the high frequency voltage and a position of the rotor, wherein the stator core is formed so as to have a shape in which, when a slot pitch ρs (mm) is defined by where an inner radius of the stator is represented by Rs (mm) and a number of slots is represented by Ns, a value Wsn obtained by dividing a slot opening width Ws (mm) by the slot pitch ρs (i.e., Wsn=Ws/ρs) satisfies the following equation: a value Wtn obtained by dividing a tooth width Wt (mm), measured at a center portion of a shaft of each of the teeth, by the slot pitch ρs (i.e., Wtn=Wt/ρs) satisfies the following equation: