What is working principle of induction motor?
Working Principle of Induction Motor The motor which works on the principle of electromagnetic induction is known as the induction motor. The electromagnetic induction is the phenomenon in which the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field.
How does a motor gearbox work?
A gearbox—otherwise known as a gear reducer or speed reducer—is a set of gears that can be added to a motor to drastically decrease speed and/or increase torque. Each gearbox type works in unison with a motor to achieve the desired speed-torque output.
Why induction motor works on the principle of induction?
The relative speed between stator RMF and rotor conductors causes an induced emf in the rotor conductors, according to the Faraday’s law of electromagnetic induction. The rotor conductors are short circuited, and hence rotor current is produced due to induced emf. That is why such motors are called as induction motors.
What is principle of 3 phase induction?
The working of the three-phase induction motor is based on the principle of electromagnetic induction. When three-phase stator winding of an induction motor is energized from a 3 phase supply, a rotating magnetic field is set up which rotates around the stator at synchronous speed (Ns).
What is the working principle of single phase induction motor?
A single phase induction motor consists of a single phase winding on the stator and a cage winding on the rotor. When a 1 phase supply is connected to the stator winding, a pulsating magnetic field is produced. In the pulsating field, the rotor does not rotate due to inertia.
Is an induction motor AC or DC?
Induction motors, linear motors, and synchronous motors, for example, are all types of AC motors. AC motors can also include variable-frequency drives to control the motor’s speed and torque, while DC motors are available in self-excited and separately excited-type models.
What is gearbox and its function?
The gearbox is a mechanical device used to increase the output torque or to change the speed (RPM) of a motor. The shaft of the motor is connected to one end of the gearbox and through the internal configuration of gears of a gearbox, provides a given output torque and speed determined by the gear ratio.
What are types of gearbox?
In general, there are three different types of gearboxes: concentric, parallel, and right angle.
What is stator and rotor of induction motor?
The stator then is the stationary part of the AC motor. The rotor is the rotating electrical component. It also consists of a group of electro-magnets arranged around a cylinder, with the poles facing toward the stator poles. The rotor is located inside the stator and is mounted on the AC motor’s shaft.
What is slip of motor?
In an electrical coupling, slip is defined simply as the difference between the speeds of the two rotating members. In an induction motor, slip is a measure of the difference between the machine’s synchronous speed and its shaft speed.
Why capacitor is used in single-phase motor?
Some single-phase AC electric motors require a “run capacitor” to energize the second-phase winding (auxiliary coil) to create a rotating magnetic field while the motor is running. Start capacitors briefly increase motor starting torque and allow a motor to be cycled on and off rapidly.
How does a gearbox work?
It drives the individual gears on the main shaft, which rotate freely on the bearings. Thus, the gearbox passes the drive to the wheels depending upon the gear which engages on the main-shaft. When you push the shifter-sleeve towards the desired gear, that gear locks onto the main-shaft and rotates it.
How does an induction machine work?
Step 1. Consider, an AC supply is connected to the stator terminals of an induction machine. The rotating magnetic field produced in the stator pulls the rotor to run behind it (in this phase, the machine is acting as a motor). Step 2.
How does gear reduction work in gear shift lever?
By operating the gear shift lever the third gear on the main shaft is moved along the shaft to mesh with the third gear of the counter shaft. The main shaft turns in same direction as clutch shaft. A gear reduction of approximately 3:1is obtained.
How many gears are there in a gear box?
Generally, there are two sets of gears in a conventional gear box – the input & the output. The input gears are fixed on the countershaft making it a single unit. It drives the individual gears on the main shaft which rotate freely on the bearings.