Magnetic field characteristics of plane multi-tooth polar
When we use motors, one of the important parameters that affect motor efficiency and performance is the magnetic field of the motor. The magnetic field distribution of a motor is related to the winding structure, and the number and shape of the original fundamental poles of the motor will be different. Among them, plane multi-tooth polar windings can be referred to generally as radial windings and axial windings. What are the magnetic field characteristics of plane multi-tooth poles?
The magnetic field characteristics of plane multi-tooth poles are related to their winding arrangements. Different winding principles result in different characteristics of the magnetic field.
(1) The magnetic field in the axial direction is uniform. This is mainly due to the magnetic field distribution generated by the axial winding or the radial-axial winding of a plane multi-tooth pole winding, which is evenly distributed in the entire slot, resulting in a uniform magnetic field in the axial direction.
(2) The magnetic field in the radial direction is consistent with the reversed sine wave. This is mainly because the number of revolutions of the phase winding along the circumferential direction changes with the number of poles, and its direction is different, resulting in a radial magnetic field distribution that changes along the circumferential direction and is consistent with the reversed sine wave.
(3) The internal magnetic field is uneven. There are two stator teeth in the vertical direction of a plane multi-tooth pole winding, and the magnetic field distribution of the field winding generated in the slot is not uniform, resulting in an uneven distribution of the internal magnetic field.
In short, the magnetic field characteristics of a plane multi-tooth pole winding mainly include a uniform magnetic field in the axial direction, a reversed sine wave in the radial direction, and an uneven internal magnetic field. These characteristics of the magnetic field have a great impact on the working performance of the motor, so we should understand the characteristics of the magnetic field of the plane multi-tooth pole winding correctly, so as to better select and adjust the motor to meet the needs of its application.
