The principle and structure of the permanent magnet synchronous motor in the static power unit are explained in detail!

The principle and structure of the permanent magnet synchronous motor in the static power unit are explained in detail!
In recent years, the permanent magnet synchronous motor has developed rapidly. Its characteristics are high power factor and high efficiency. In many occasions, it has gradually replaced the commonly used AC asynchronous motor. Among them, the asynchronous start permanent magnet synchronous motor has superior performance and is a promising Energy-saving motors. The following is introduced by the power unit manufacturer: the stator of permanent magnet synchronous motor
Its stator structure and working principle are the same as AC asynchronous motors, mostly in 4-pole form. The motor windings are arranged in a 3-phase 4-pole arrangement, using a single-layer chain winding to generate a 4-pole rotating magnetic field when energized.
The magnetic pole magnetic field supplied by the permanent magnet in the permanent magnet synchronous motor is fixed during the rotation of the motor. This is to request that the armature magnetic field of the stator winding at each time must correspond to the magnetic pole magnetic field of the rotor, that is, the current of the winding. The brushless DC motor must have the rotor direction signal output to the alignment circuit of the motor, and the motor’s bias circuit responds to the conduction of the corresponding power switch tube according to the rotor direction signal. If the stator windings are switched in a certain energization sequence, a rotating magnetic field corresponding to the rotor position can be formed, so that the motor can rotate in the requested direction of rotation. Relative to the absolute magnetic pole of the magnet, the armature magnetic field corresponding to it at each time is fixed, that is, the current direction of the winding is fixed, which is similar to a brushed DC motor.


Post time: Mar-22-2021