How the AC motor with DC power transfer
If the permanent magnet synchronous motor is used, the motor will be braked and the motor will be positioned at a fixed angle. Of course, we can not add full voltage.
Different manufacturers use different motors for fans.If you are using a series or shunt motor, DC or AC or.If you are using an asynchronous motor, and there is no buck, it will burn, and will not brake.
Remember, the coil of the motor is a large inductance. When there is no rotation counter voltage to counteract the voltage, it is equivalent to short circuit to the direct current. If it does not reduce the pressure, it will burn.
The home electric fan which belongs to the principle of asynchronous motor in the motor it is bilateral induction principle, the three-phase alternating current electromagnetic field generated in the stator side received, which is surrounded by a conductor and electricity, then you want to, because he is the three-phase AC, amplitude and phase are changing over time, so here is the key the change of three-phase alternating current, the magnetic field generated by the inevitable change, in fact is a rotating circular magnetic field, the magnetic field will spin up -- can be understood as cutting rotor blade of electric fan shaft by electromagnetic induction principle of Faraday, or Lenz's theorem, the electromotive force in the rotor on the birth will thus, rotation moment rotation. You add DC, it is not difficult to find in the understanding of this principle, because the direct current in the stator with the direction and size are the same, does not produce rotating magnetomotive force, the fan does not rotate, unable to work. They are all lessons, and I hope I can help you.
