Two-phase brushless direct current motor

• Main Authors: LOU YONGWEI, ZHONG CHONGHUI, QIAN ZHICUN
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2020
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The utility model discloses a two-phase brushless direct current motor which comprises a permanent magnet rotor, a first single-winding stator, a second single-winding stator, a bearing seat and a driving circuit board. The first single-winding stator and the second single-winding stator are installed on the periphery of the bearing seat in a stacked mode in the axial direction, and the electricalangle difference between the first single-winding stator and the second single-winding stator is 90 degrees in space. Two single-winding stators of the two-phase brushless direct current motor shareone permanent magnet rotor, cogging torque generated by the two-phase brushless direct current motor is just offset from each other, and the total cogging torque is 0. The phase difference of power supply of the two stator windings is also 90 degrees, and the power supply is overlapped with torque generated by the rotor, so that the defects of large torque ripple and small starting torque of a single-phase motor are avoide