The proportion of fan products in the purchase of household motor is also higher. The structure and working principle of electric fan is the principle of magnetic dynamics.
The main components of the electric fan are: AC motor.Its working principle is: the current coil in the magnetic field force and rotation.The form of energy conversion is: electric energy is mainly converted into mechanical energy, and because of the resistance of the coil, it is inevitable that a part of electric energy will be converted into internal energy.The electricity generates a rotating magnetic field to drive the rotor.
There is a single-phase motor in the fan, which separates the single-phase alternating current from the 90-degree alternating current by starting the capacitive phase shift.The two phases of alternating current are sent into two or four groups of motor windings, the formation of a rotating magnetic field in the motor, the rotating magnetic field in the motor rotor generated by the induction current, the magnetic field generated by the induction current and rotating magnetic field in the opposite direction, is pushed and pulled into the rotating state by the rotating magnetic field.That is, the starting torque of the electric fan is copied to 0, so it is necessary to generate a rotating magnetic field inside the motor to turn up. Generally, a starting winding should be placed at the same time as the working winding, and the distribution of the two windings in the motor should have an Angle in space.A rotating magnetic field is created by introducing different phases of current into the motor to spin it.Generally with capacitance or resistance phase start.Work according to the principle of electromagnetic induction.Current-carrying conductor in magnetic field force and movement, the effect of coil is some use copper or aluminum core of enameled wire winding and become, when the stator coil zhongtong into current, then produce a rotating magnetic field, the rotor conductor cutting, which is generated by the rotating magnetic field induced electric potential, the electric potential, under the action of the rotor, the electric current flows through a conductor rotor current interact with rotating magnetic field, the rotor electromagnetic torque caused by the electromagnetic drive and spin.
