motorsmount

Induction motor is kind of AC motor, the ratio between its rotational speed grid frequencies is not constant relationship; it also changes with the weight of the load. The greater the load torque, the rotor speed lower is. Induction motors including induction motors, double-fed asynchronous motors and AC commutator motor. The most widely used motor is induction motor. The stator windings of Common induction motor connected with AC power grid, the rotor windings don’t need to connect with other power. Therefore, it has simple structure, manufacture, use, and easy maintenance, reliable operation, small quality, low cost and other advantages. Induction motors have higher efficiency and better performance characteristics; they can satisfy the transmission requirements of most industrial and agricultural production machinery. Induction motor is also easy to generate a variety of protective type to meet the needs of different environmental conditions. As to the transport machinery require for a wide range of speed control, such as rolling mills, large-scale machine tools, printing and dyeing and paper making machinery….. Using DC motors are more economical and convenient. But with the development of high-power electronic devices and the AC drive system, performance and economy of induction motor that for wide speed have to be comparable with the DC motor.