PERMANENT MAGNET MOTOR

• Main Authors: AKUTSU SATORU, ASAO YOSHIHITO, NAKANO MASATSUGU, TAKIGUCHI RYUICHI, HIROTANI YU, TAKIZAWA YUJI
• Format: Patent
• Language: English; French; German
• Published: 09.03.2016
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

Provided is a permanent magnet motor that realizes reduction of both cogging torque and torque ripple, and also downsizing and weight reduction together with torque ripple reduction. When two sets of three-phase armature windings are defined such that a first armature winding 30-1 corresponds to U1 phase, V1 phase, and W1 phase and a second armature winding 30-2 corresponds to U2 phase, V2 phase, and W2 phase, U1 phase is provided in both of any adjacent slots of a plurality of slots 27, or at least one of U1 phase and U2 phase is provided in one of any adjacent slots 27, U1 phase, V1 phase, and W1 phase are shifted by an electric angle of 20° to 40° from U2 phase, V2 phase, and W2 phase upon driving, and a slot opening width Ws of a stator iron core 22 is set to satisfy Ws/(2ÀRs/Ns) ‰¦ 0.15, where Rs is an inner radius of the stator iron core and Ns is a slot number of the stator iron core.