What is the rotation principle of the motor?

Motor rotation is the use of electrified coils (that is, stator windings) to generate a rotating magnetic field, which acts on the rotor (such as squirrel-cage closed aluminum frame) to form a magnetoelectric rotating torque.

According to different power sources, motors are divided into DC motors and AC motors. The motors in the power system are mostly AC motors, which can be synchronous motors or asynchronous motors (the stator magnetic field speed of the motor is not synchronized with the rotor speed).

The motor is mainly composed of stator and rotor, and the direction of electrified conductor in magnetic field is related to the direction of current and magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field acts on the current to make the motor rotate.

Extended data:

Leading motor:

Brushless DC motor is composed of motor body and driver, which is a typical mechatronics product. The stator winding of the motor is mostly made into three-phase symmetrical star connection, which is very similar to the three-phase asynchronous motor.

A magnetized permanent magnet is attached to the rotor of the motor. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor. The driver consists of power electronic devices and integrated circuits.

Its functions are: receiving the start, stop and braking signals of the motor, and controlling the start, stop and braking of the motor; Receiving the position sensor signal and the forward and reverse signals, controlling the switch of each power tube of the inverter bridge to generate continuous torque; Receive speed instructions and speed feedback signals, and control and adjust the speed; Provide protection and display, etc.

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