Avoid to avoid the second power cord around the problem, because the coil is continuously turn, use two wires to the coil power supply, the power cord will avoid around about the current in the coil is due to alternating current (ac), there is a time of current is equal to zero, but this time with the current time is too short, what's more, the coil quality, with inertia, due to the inertia coil will not stop. Ac motor is according to the characteristics of alternating current (ac), to produce a rotating magnetic field in the stator winding, and then make the cutting rotor winding magnetic induction line movement, make the rotor winding induced current, the induced current in the opposite direction of the induced magnetic field and stator magnetic field, to make the rotor has the rotary torque.
Ac motor consists of stator and rotor, what you said in the model, the stator is the electromagnet, the rotor coil. The stator and rotor is to use the same power supply, so the direction of the current in the stator and rotor changes always synchronized, namely the current in the coil direction changed, became the current in the electromagnet direction at the same time, according to the left hand rule, coil by magnetic direction invariable, the coil can continue turn. About the role of two copper rings, two copper rings with corresponding brush, can continuously is fed into the coil current. The benefits of this design are
The principle of ac motors: the coils spin in the magnetic field. Do you know the principle of direct current electromotor? Dc motor commutator is used to automatically change the direction of the current in the coil, so that the coil stress direction is consistent and continuous rotation. So as long as the guarantee coil stress direction is consistent, continuous rotary motor will be. Ac motor is the application of this.
