- 1 What does an AC induction motor do?
- 2 When was the AC induction motors used?
- 3 What are the uses of induction motor?
- 4 What appliances use an induction motor?
- 5 Is AC motor and induction motor same?
- 6 How does an induction motor start?
- 7 Why is AC motor important?
- 8 Do AC induction motors have brushes?
- 9 What 3 things are needed for an induction motor to work?
- 10 What are two types of induction motor?
- 11 What are the main parts of induction motor?
- 12 What are the types of induction motors?
- 13 What are the advantages of 3 phase induction motor?
What does an AC induction motor do?
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor can therefore be made without electrical connections to the rotor.
When was the AC induction motors used?
1888 – The AC induction motor is patented It wasn’t suitable for road vehicles but it was later adapted by Westinghouse engineers. In 1892 the first practical induction motor was designed, followed by a rotating bar winding rotor, making the unit suitable for use in automotive applications.
What are the uses of induction motor?
These are the most common type of AC motor and are important to industry due to their load capacity, with Single-Phase induction motors being used mainly for smaller loads, for example in household appliances whereas, Three-Phase induction motors are used more in industrial applications including compressors, pumps,
What appliances use an induction motor?
The single-phase induction motors are used in low power applications. These motors are widely used in domestic and industrial applications. Some of the applications are mentioned below:
- Small fans.
- High speed vacuum cleaners.
- Electric shavers.
- Drilling machines.
Is AC motor and induction motor same?
The two main types of AC motors are induction motors and synchronous motors. The induction motor (or asynchronous motor) always relies on a small difference in speed between the stator rotating magnetic field and the rotor shaft speed called slip to induce rotor current in the rotor AC winding.
How does an induction motor start?
When the supply is connected to the stator of a three-phase induction motor, a rotating magnetic field is produced, and the rotor begins rotating and the induction motor starts. At the time of starting, the motor slip is unity, and the starting current is very large.
Why is AC motor important?
AC motors are viable power sources for a range of applications due to their flexibility, efficiency and quiet operation. General uses for AC motors include pumps, water heaters, lawn and garden equipment, ovens, and off-road motorized equipment.
Do AC induction motors have brushes?
AC induction motors have no brushes and have a much longer life expectancy. DC motor speed is controlled by varying the armature current, while AC motor speed control is achieved by varying the frequency of the alternating current, often with a variable frequency drive(VFD).
What 3 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 are two types of induction motor?
Single-phase induction motors and three-phase induction motors are the two main types of induction motors.
What are the main parts of induction motor?
Parts of Induction Motors
- Stator. The stator is the stationary portion of the motor and delivers a rotating magnetic field to interact with the rotor.
- Rotor. The rotor is the central component of the motor, and is fixed to the shaft.
- Shaft. The motor shaft is fixed within the rotor, and rotates with it.
What are the types of induction motors?
Types of Induction Motors
- Split Phase Induction Motor.
- Capacitor Start Induction Motor.
- Capacitor Start and Capacitor Run Induction Motor.
- Shaded Pole Induction Motor.
What are the advantages of 3 phase induction motor?
Unlike synchronous motors, a 3 phase induction motor has a high starting torque, good speed regulation and reasonable overload capacity. An induction motor is a highly efficient machine with full load efficiency varying from 85 to 97 percent.