Electric motor-driven compressor for vehicle
AssigneeHalla Climate Control Corporation
InventorsSEONK KOOK CHO, KYUNG HUN JUNG, KYUNG SEOK CHO, CHAN HO BAEK
Life of this patent
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Abstract
Disclosed is an electric motor-driven compressor having a structure capable of improving the performance of an electric motor of the electric motor-driven compressor for the vehicle. The electric motor-driven compressor has an angle which is formed by two straight lines passing through a center of the rotor and making contact with both end portions of one permanent magnet, and is in a range of about 48.7° to about 51°. The cogging torque and the torque ripples are minimized, the power of the electric motor is improved, and the electric motor is easily controlled.
Claims6
An electric motor-driven compressor comprising:
- an electric motor including a stator, which has a cylindrical shape and an inner part perforated in an axial direction and is provided in an internal circumferential surface thereof with a plurality of winding slots extending in parallel to the axial direction such that a coil is wound therein and a rotor having the cylindrical shape and coaxially provided in the stator,
- wherein six permanent magnets are inserted into the rotor in the axial direction, and an angle formed by two straight lines passing through a center of the rotor and making contact with both end portions of one permanent magnet is in a range of about 48.7° to about 51°.
Dependencies are inferred from the claim text.