Relative to asynchronous motor slip rate is a unique, but also an important parameter, its definition is the stator rotating magnetic field speed and rotor speed difference; We are used to using the size of the slip rate to explain the running speed of the motor, for example, the slip rate is very small when the motor is unloaded, that is, the speed of the rotor is close to the synchronous speed. As the load increases, the slip rate also increases.
Finite motor has a higher slip rate, these high slip rate motor, the slip rate must meet the technical conditions of high slip rate motor. There are two ways to improve motor slip: one is to change rotor groove shape and guide bar material; The second is to increase the rotor resistance, so that it has the characteristics of large locked-rotor torque and small locked-rotor current.
In terms of operation characteristics, the motor with high slip rate has the characteristics of high slip rate and soft mechanical characteristics. From the manufacturing link, we can find that in the high-slip cast aluminum rotor, the rotor aluminum is not pure aluminum, but alloy aluminum.
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