Overview of three phase induction motors

Three phase asynchronous motor for motor operation. Three phase asynchronous motor rotor speed below the speed of a rotating magnetic field, the rotor winding magnetic field between the relative motion and the induced electromotive force and current, and electromagnetic torque and magnetic field interaction, realize the energy transformation. Compared with the single-phase asynchronous motor, the three-phase asynchronous motor has good performance and can save all kinds of materials. According to the different rotor structure, three-phase asynchronous motor can be divided into two types of cage and winding. The squirrel cage rotor asynchronous motor has been widely used because of its simple structure, reliable operation, light weight and low price. Winding type three-phase asynchronous motor rotor and stator windings and also set up by slip ring, brush and external rheostat connection. Adjust rheostat resistance can improve the starting performance of the motor and adjust the motor speed.

Compared with the single-phase asynchronous motor, the three-phase asynchronous motor has good performance and can save all kinds of materials. According to the different rotor structure, three-phase asynchronous motor can be divided into two types of cage and winding. The squirrel cage rotor asynchronous motor has been widely used because of its simple structure, reliable operation, light weight and low price. Winding type three-phase asynchronous motor rotor and stator windings and also set up by slip ring, brush and external rheostat connection. Adjust rheostat resistance can improve the starting performance of the motor and adjust the motor speed.