Working principle of AC motor
The principle of AC motor, electric coil in the magnetic field rotation. You know the principle of DC motor, DC motor? Is utilized to automatically change the direction of the current in the coil commutator, so the coil stress direction consistent and continuous rotation.
Therefore, as long as the electromagnetic force direction, the motor will rotate continuously. This is the application of AC motor. The AC motor consists of stator and rotor, you said in the model, the stator is electromagnet, rotor stator and rotor coil is. While using the same power source, so the current in the stator and rotor the direction of change is always synchronized, i.e. the current direction in the coil is changed, and the direction of the current in the electromagnet, according to the left-hand rule coil magnetic force direction, coil can continue to turn down.
About two copper rings function: two brush corresponding two copper rings with the current energy source is constantly being sent through the coil. The benefits of this design is: to avoid the two power line of the Chan around the problem, because the coil is on the turn, with two wires to the coil power supply then, two power line will be around the current in the coil of Chan is due to alternating current, current is equal to zero, but this time with the current time is too short than up, not to mention the coil quality, with inertia, due to inertia coil will not be stopped. The AC motor is based on alternating current the characteristics of rotating magnetic field generated in the stator windings, and the rotor coil magnetic line cutting motion, the rotor coil generates induction current, magnetic field induced current induced magnetic field of the stator and the rotor to make the opposite rotation force Moment.
