Rotor of induction motor. The rotor, mounted on a shaft, is a hollow laminated core having slots on its outer periphery. The winding placed in these slots (called rotor winding) may be one of the following two types: it is rotating part of induction motor construction. 1. Squirrel cage type 2. Wound type. 1. Squirrel cage rotor of Induction Motor.
Construction of Squirrel Cage Rotor. Most of the three-phase induction motors use the squirrel cage rotor. This is because of its very durable and robust construction. In 90% of induction motors, we can find the squirrel cage rotor. The squirrel cage rotor consists of a laminated core of the same grain-oriented silicon steel.
The motor which works on the principle of electromagnetic induction is known as the induction motor. Electromagnetic induction is the phenomenon in which the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field. The stator and rotor are two essential parts of the motor.
Basic construction. The AC induction motor comprises 2 electromagnetic parts: Stationary part called the stator. Rotating part called the rotor, supported at each end on bearings. The stator and the rotor are each made up of: An electric circuit, usually made of insulated copper or aluminum, to carry current.
Induction Motor is a singly-excited device that works on the principle of Mutual Induction. It is similar to a transformer which also works on the same principle. The difference between a transformer and IM is the transformer is a static device whereas the IM is a rotating device. ... Based on the construction of rotor IM is further classified ...
Electronics: Why does the rotor magnetic field lag the rotor current by 90 in a 3 phase induction motor?Helpful? Please support me on Patreon: https://
An induction motor is composed of a rotor, known as an armature, and a stator containing windings connected to a poly-phase energy source as shown in Figure below. The simple 2-phase induction motor below is similar to the 1/2 horsepower motor which Nikola Tesla introduced in 1888. Tesla polyphase 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. Wound-rotor motors can be started with low inrush current, by inserting high resistance into the rotor circuit; as the motor accelerates ...
CONSTRUCTION OF INDUCTION MOTOR. The two parts of the induction motor are- a. Stator. b. Rotor. (a) Stator: The stator and the stator part of the motor are fixed at all times. The stator frame, called the yoke, is made of cylindrical casting. The stator frame has ventilation holes to keep the stator cool. The stator core is on the inside of the ...
In slip ring Induction motor the rotor also contains winding similar to the stator that is the rotor winding can also be short pitched and distributed just like stator winding. The rotor must be wound for same number of poles as the stator winding. There can be any number of phases on the rotor but in general we consider 3-phases on the rotor.
Slip-ring or Wound Rotor Induction Motor; Related Post: Brushless DC Motor (BLDC) – Construction, Working Principle & Applications. Squirrel Cage Induction Motor. The shape of this rotor is resembling the shape of the cage of a squirrel. Therefore, this motor is known as a squirrel cage induction motor. The construction of this type of rotor ...
Answer (1 of 2): Hi, As a general rule, construction of a induction motors consist essentially of two main parts : a) a stator and b) a rotor In rotor construction, there are two types of motors are coming.. * Squirrel cage rotor motor * Phase wound or wound rotor motor Lets know something ...
The induction motor with a cage was invented by Mikhail Dolivo-Dobrovolsky about a year later in Europe. Technological development in the field has improved to where a 100 hp (74.6 kW) motor from 1976 takes the same volume as a 7.5 hp (5.5 kW) motor did in 1897. Currently, the most common induction motor is the cage rotor motor.
An induction motor (also known as an asynchronous motor) is a commonly used AC electric motor. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. The rotor of an induction motor can be a squirrel cage rotor or wound ...
Construction of Induction Motor Usually 3 phase motor consist of motor & stator. This stator carries a 3 phase windings while rotor carries winding from the short circuit called rotor winding. Only the stator winding from the 3 phase supply. Induction motor may be considered as transformer with a rotating secondary transformer or A.C machine in ...
The rotor of an induction motor is a hollow cylindrical laminated core, having slots on its outer periphery. The rotor windings are placed in these rotor slots. Depending upon the winding arrangement, the rotor of a 3-phase induction motor is of two types −
A cage induction motor rotor consists of a series of parallel conducting bars all around the rotor, shorted together at each end by large shorting rings (Figure 1). Figure 1: Squirrel cage construction of induction motor A wound rotor has a complete set of three-phase windings that are similar to the windings on the stator.
Construction : Conversion of electrical power into mechanical power takes place in the rotating part of an electric motor. In A.C. motors, rotor receives electric power by induction in exactly the same way as the secondary of a two-winding transformer receives its power from the primary. Hence such motors are known as a rotating transformer i.e. one in which primary winding is stationary but ...
Construction Of Squirrel Cage Induction Motor. Any Induction Motor has a Stator and a Rotor. The construction of Stator for any induction motor is almost the same. But the rotor construction differs with respect to the type which is specified above. The stator is the outer most component in the motor which can be seen.
A rotor for high speed induction motor, having a stacked-lamination type rotor core (23) provided with axial opposite ends on which aluminum end rings (24) are assembled or fused by die casting, and balancing rings (25) provided as iron coverings enclosing the aluminum end rings (24), the iron balancing ring (25) being assembled or fused together with the above-mentioned end rings on the ...
Principle of operation of 3-phase induction motor :- The three phase induction motor works on the principle of electromagnetic induction. When a three-phase supply is given to three-phase winding of the motor, a magnetic field is produced which rotates at synchronous speed. The rotating flux passes through the air gap and cuts the rotor ...
October 26, 2020. February 24, 2012. by Electrical4U. Rotor as the name suggests it is a rotating part of an electrical machine, in which current is induced by transformer action from rotating magnetic field. Induction motor rotor is of two types: Squirrel Cage Rotor. Wound Type Rotor or Slip Ring Type Rotor.
The induction motor works on the principle of induction where an electromagnetic field is induced into the rotor when the rotating magnetic field of the stator cuts the stationary rotor. Induction machines are by far the most common type of motor used in industrial, commercial, or residential settings.
Rotor: The construction of the rotor is the same as the normal single-phase induction motor. The rotor of shaded pole induction motors is the Squirrel Cage type rotor. The rotor bars are provided with a 60-degree skew. This is to obtain an optimum starting torque and for limiting the torque dip during the run-up.
The construction of the rotor looks like a cage of "squirrel" and hence called as "squirrel cage type motor". Wound type rotor with slip rings: In this type of induction motor, the rotor is wound for the same number of poles as that on the stator.
A Wound Rotor Induction Motor is also known as slip ring induction motor. I will tell you about the construction of Wound Rotor Induction Motor in the first section. In the second section, I would be throwing light on the operation and working principle of Wound Rotor Induction Motor.
Construction of Three Phase Induction Motor: Figure 8.1 shows the construction of three phase induction motor.A 3 phase induction motor has two main parts (i) stator and (ii) rotor.The rotor is separated from the stator by a small air-gap which ranges from 0.4 …
Construction of squirrel cage motor is simple and robust. Squirrel cage induction motor cost is very low. Less maintenance is required due to the simple construction. Rotor itself automatically adjusts to the number of poles as that of stator. Squirrel cage motor consists of cylindrical rotor having skewed slots in which aluminum bars are placed.
Induction Motor: Construction, Working principle & Advantages. An Induction motor is the most widely used AC motor in industrial and domestic applications. Now you might think, why is it so? It is because of the low cost, simple and rugged construction of the motor. Moreover, it has good operating characteristics with an efficiency as high as 90%.
electric motor - electric motor - Construction of induction motors: The stator frame consists of laminations of silicon steel, usually with a thickness of about 0.5 millimetre. Lamination is necessary since a voltage is induced along the axial length of the steel as well as in the stator conductors. The laminations are insulated from each other usually by a varnish layer.
