The present invention provides a three-phase motor stator. The shape of the three-phase motor stator is defined by an optimum pole-tooth ratio for reducing the cogging torque of the motor and increasing the efficiency of the motor. The three-phase motor stator includes at least one plate board. The plate board has a circular hole. A plurality of pole-teeth protrude from the rim of the circular hole and the pole-teeth are symmetric. An opening slot is individually located between two adjacent pole-teeth. The pole-tooth ratio alpha defined by the tooth angle of a single pole-tooth divided by the pole pitch of two adjacent pole-teeth is between 0.65 and 0.85.
申请公布号
US2008143210(A1)
申请公布日期
2008.06.19
申请号
US20060640877
申请日期
2006.12.19
申请人
WANG SHYH-JIER;KUO LI-TE;JANG CHAU-SHIN;CHANG JEN-CHIEH
发明人
WANG SHYH-JIER;KUO LI-TE;JANG CHAU-SHIN;CHANG JEN-CHIEH