| 摘要 |
PURPOSE:To reduce leakage flux and the weight of a core, by providing windings for concentrated winding in grooves provided for a laminated core, to connect the windings by a specified means, and by forming a stator fixing a permanent magnet on each magnetic pole. CONSTITUTION:Half-closing or opening grooves 12 are provided for the inner peripheral face of a laminated core 11 at equal intervals, and m phase windings 13 for concentrated winding are contained in the grooves. On the windings 13, the phase difference of each pi/m is arranged between electrical angles, and windings with phase difference of each pi are mutually connected in counter- series to be phase windings. Also, on the inner peripheral face of the magnetic poles of the stator core, permanent magnets 14 are fixed alternately with poles N or poles S to form a stator 1. A tooth-gear-shaped rotor 2 having salient poles 21 different from stator poles in quantity is made to confront the inner peripheral side of the stator 1 via space. By the method, efficiency and power factor can be improved on an induction machine with teeth at large pitch. |
