What are the parts of slip ring induction motor?
What are the parts of slip ring induction motor?
A wound rotor motor uses three slip rings — typically made of copper or a copper alloy — mounted to (but insulated from) the motor shaft. Each slip ring is connected to one of the three phases of rotor windings. The slip ring brushes, made of graphite, are connected to a resistive device, such as a rheostat.
What is slip ring in induction motor?
A wound-rotor motor, also known as slip ring-rotor motor, is a type of induction motor where the rotor windings are connected through slip rings to external resistance. Adjusting the resistance allows control of the speed/torque characteristic of the motor. Each pole is wired in series with a variable power resistor.
What is slip ring in 3 phase induction?
For an induction motor to produce torque, at least some difference should be there between stator field speed and rotor speed. This difference is called ‘slip’. The Slip Ring” is an electromechanical device that aids in transmitting power and electrical signals from stationary to a rotating component.
What are the main parts of induction machine?
Parts of induction motor
| Parts | Material | Function |
|---|---|---|
| Rotor core | Silicon steel | Houses rotor winding. |
| Rotor winding | Copper and insulated | To produce rotor current. |
| Air gap | – | To provide rotor and stator. |
| Air inlet-outlet | – | For air circulation. |
What is slip formula?
If the revolving magnetic flux’s synchronous speed & the speed of rotor are Ns & Nr in the motor, then the speed among them can be equivalent to (Ns – Nr). So, slip can be determined as. S = (Ns – Nr) / Ns.
What are the advantages of slip ring induction motor?
Advantages:
- High Starting torque with low starting current.
- Speeds can be adjusted in the case of slip ring (wound rotor) induction motor by inserting an resistance.
- Slip ring motors have high over loading capacity, smooth acceleration under heavy loads, and no abnormal heating during starting.
What are the two major parts of an induction?
Like any other electrical motor, induction motor have two main parts namely rotor and stator. Stator As the name indicates stator is a stationary part of induction motor. A three phase supply is given to the stator of induction motor. Rotor The rotor is a rotating part of induction motor.
What three things are needed for an induction motor to work?
A 3-phase induction motor includes two essential components namely the stator & the rotor. In this motor, the stationary part is the stator whereas the rotating part is the rotor. In this motor, the load is connected to the shaft. Three-phase armature winding can be wound over the stator.
What is full load slip?
The slip corresponding to full load speed of th motor is called full load slip. Example 1 : A 4 pole, 3 phase induction motor is supplied from Hz supply. Determine its synchronous speed. On full load, its speed is observed to be 1410 r.p.m. calculate its full load slip.
What are the parts of a slip ring induction motor?
Slip ring Induction motor is also known as wound rotor induction motor. Slip ring motor has main two parts as we know: Stator and Rotor. The stationary part of the motor is called stator and rotary part of the motor is called rotor. The works of the stator is common in all motor to develop a magnetic field.
What should I know about slip ring induction?
Topics which are covered here: Slip ring induction motor application, construction, working principle, advantages and disadvantages, speed control of slip ring induction motor, the difference between Slip ring I.M and Squirrel cage I.M. If you want to add any further topic related to this article comment below we will add that topic soon!
How are slip rings used in a machine?
Slip rings can enhance the mechanical performance of a machine, streamline system functionality, and eradicate damage-prone wires hanging from rotating joints. They function by making continuous electrical connections from stationary systems to rotating systems. Slip rings can also be called swivels, rotary joints, collectors, or commutators.
How does a slip ring motor control speed?
The rotor windings consist of more number of windings, higher induced voltage, and less current compared to the squirrel-cage rotor. The windings are connected to external resistance through slip rings, which helps to control the torque/speed of a motor.
