ELECTRIC MOTOR, BLOWER, AND AIR CONDITIONING DEVICE

A motor includes a rotor and a stator provided so as to surround the rotor. The rotor has a rotor core having a magnet insertion hole and a permanent magnet disposed in the magnet insertion hole and is rotatable about a rotation axis. The stator has a stator core with a tooth facing the rotor, and a...

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Bibliographic Details
Main Authors NOMOTO, Kazuma, SHIMOKAWA, Takaya, ASO, Hiroki, TAKAHASHI, Ryogo
Format Patent
LanguageEnglish
French
German
Published 12.06.2024
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:A motor includes a rotor and a stator provided so as to surround the rotor. The rotor has a rotor core having a magnet insertion hole and a permanent magnet disposed in the magnet insertion hole and is rotatable about a rotation axis. The stator has a stator core with a tooth facing the rotor, and a coil wound around the tooth. The permanent magnet has a thickness thicker than or equal to 2.1 mm in a direction in which the permanent magnet faces the stator and is magnetized in a direction of the thickness. A minimum gap AG (mm) between the rotor and the stator, a winding number Nt of the coil around the tooth, an overcurrent threshold Ip (A) for a current flowing through the coil, and a lower limit Hct (kA/m) of a coercive force of the permanent magnet satisfy Hct ≥ 0.4 × (Ip × Nt/AG) + 410.
Bibliography:Application Number: EP20180924086