Which motors are associated with the term slip

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AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Make Shortcut to Home Screen? Electrical Induction Motors - Slip Slip is the difference between an electrical induction motor's synchronous and asynchronous speed.

As we know, the slip speed is the difference between the synchronous and rotor speed of the induction motor. The emf induces in the rotor because of the relative motion, or we can say the slip speed of the motor.

The rotor current is directly proportional to the induced emf. The torque is directly proportional to the rotor current. Therefore, Hence, torque is directly proportional to slip. The above equation shows that the torque induces on the rotor is directly proportional to the slip of the induction motor.

The high value of slip induces the emf in the rotor. This EMF develops the heavy torque on the rotor conductors. The value of the slip is adjusted by considering the load on the motor.

For full-load, a high value of torque is required. This can be achieved by increasing the amount of the slip and reducing the speed of the rotor. The slip of the motor is kept low when the induction motor is running at no-load.

The small slip produces a small torque on the motor. Thus rotor of 3 phase Induction Motor can never attain synchronous speed. Therefore, slip is never zero in induction motor. The significance of slip in induction machine is tabulated below. The behavior of induction machine is quite dependent on the value of slip. This is only possible, when the rotor is rotated in the direction of rotating magnetic flux by some prime mover. Under this condition, the machine operates as an Induction Generator.

Read Torque Slip Characteristics for detail. This means if magnetic flux is rotating in clockwise direction, then rotor is rotating in anticlockwise direction or vice versa. In Plugging or Braking of Induction motor, slip more than 1 is achieved to quickly bring the rotor at rest. Notify me when new comments are added. Value of Slip s.