Both have 3 a phase stator winding, the squirrel cage has a rotor with bars arranged around it's periphery, these bars are joined at both ends by a continuous ring. Squirrel Cage Induction Motor: Slip ring (wound rotor) Induction Motor: In Squirrel cage induction motors the rotor is simplest and most rugged in construction: In slip ring induction motors the rotor is wound type. In the motor the slip rings, brushes are provided. Compared to squirrel cage rotor the rotor construction is not simple.

/ bhanu chaitanya Describe difference between constrution of SLIPRING and SQURREL cage motor.? The windings on the rotor of a squirrel cage motor is comprised of aluminum (or sometimes copper) bars embedded in the steel laminations of the rotor. The ends of the rotor bars are shorted together by rings at each end of the rotor. There is no external electrical connection to the rotor. The bar and ring structure looks like an exercise wheel for a pet squirrel. The rotor of a slip-ring motor is wound with wire coils.

The ends of the windings are connected to revolving joint so that resistors or other circuitry can be inserted in series with the rotor coils through carbon brushes that slide on the slip-rings allowing an electrical connection with the rotating coils. That covers the difference in construction. Games for windows 7. Other details of construction are essentially the same for both types of motor. Edit 1 The above information refers to two types of induction motors. Synchronous AC motors also have Pan Cake Slip Rings through which the rotor winding is energized by a direct current.

There is no such thing as a slipring motor. There is either a squirreal cage or wound-rotor motor for induction machines. Is this wat u meant? Go here and follow the references at the bottom of the page. The slip ring is a form of squirrel cage motor The Super Miniature Slip or wound rotor motor is an induction machine where the rotor comprises a set of coils that are terminated in sliprings to which external impedances can be connected. The stator is the same as is used with a standard squirrel cage motor.

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Schematic symbol of a slip ring motor A wound-rotor motor is a type of where the windings are connected through to external resistance. Adjusting the resistance allows control of the speed/torque characteristic of the motor. Wound-rotor motors can be started with low inrush current, by inserting high resistance into the rotor circuit; as the motor accelerates, the resistance can be decreased. Compared to a, the rotor of the slip ring motor has more winding turns; the induced voltage is then higher, and the current lower, than for a squirrel-cage rotor. During the start-up a typical rotor has 3 poles connected to the slip ring.

Each pole is wired in series with a variable power resistor. When the motor reaches full speed the rotor poles are switched to short circuit. During start-up the resistors reduce the field strength at the stator. As a result the is reduced. Another important advantage over squirrel-cage motors is higher starting torque. The construction of slip ring induction motor is quite different compared to other induction motor. Slip rings Induction motor provides some advantages like provides high starting torque, low starting current and it improves the power factor.