PERMANENT MAGNET ELECTRIC MOTOR, DRIVING METHOD AND PRODUCING METHOD OF THE MOTOR, REFRIGERANT COMPRESSOR, AND BLOWER

摘要

A technique effectively using the magnetic flux of a permanent magnet, contributing to a cost reduction. Permanent magnets (14a, 14b) are arranged away from a magnetic barrier (19). Between the permanent magnets (14a, 14b) and the magnetic barrier (19) are individually exposed body sections (10a, 10b) in a manner facing a stator. A pair of third magnetic pole surfaces (13aS1, 13aS2) is produced on the body section (10a) between the permanent magnet (14a) and the magnetic barrier (19). The pair of third magnetic pole surfaces (13aS1, 13aS2) is produced by the magnetic flux produced from a second magnetic pole surface (14aS) of the permanent magnet (14a), the third magnetic pole surfaces (13aS1, 13aS2) having the S polarity and facing the stator (2) from both sides of a first magnetic pole surface (14aN). Similarly, a pair of third magnetic pole surfaces (13bN1, 13bN2) is produced by the magnetic flux produced from a second magnetic pole surface (14bN) of the permanent magnet (14b), the third magnetic pole surfaces (13bN1, 13bN2) having the N polarity and facing the stator (2) from both sides of the first magnetic pole surface (14bS).