Category: 2. Induction Motor

Variable Frequency Drives Explained – VFD Basics IGBT inverter If you work in HVAC, then you need to check out the inverter compressors by Danfoss, who have kindly sponsored this topic. When used in combination with variable speed technology, like the VFDs we’re going to cover in this article, they make your entire HVAC unit… Continue reading VFD Basics IGBT inverter

As shown in the image below, an induction motor is connected via a belt to drive two pulleys which will move centrifugal fan. This is this fairly typical of what you might find to in an Air Handling Unit or AHU. You’d also have this set up on some pumps and also some conveyor belts. The two things… Continue reading Pulley Belt Calculations

A star-delta starter is a very common type of starter and is widely used compared to other types of induction motor starters. The star-delta starter is used for the squirrel cage induction motor that is designed to run on delta-connected stator winding. The connection diagram of a start-delta starter for a three-phase induction motor is shown in the figure… Continue reading Star-Delta Starter in Induction Motor

A shaded pole motor or shaded pole induction motor is a type of single-phase induction motor usually used for the lower ratings. It is a simply self-starting single-phase induction motor with a pole shaded by a copper ring. The copper ring is known as the shaded ring. The shaded ring acts as an auxiliary winding (secondary winding). This motor… Continue reading Shaded Pole Motor

It has only one phase still it makes the rotor to rotate, so it is quite interesting. Before that, we need to know why a single phase induction motor is not a self-starting motor and how we overcome the problem. We know that the AC supply is a sinusoidal wave and it produces a pulsating… Continue reading Why Single Phase Induction Motor is not Self Starting?

In a three phase system, there are three single phase lines with a 120° phase difference. So the rotating magnetic field has the same phase difference which will make the rotor to move. If we consider three phases a, b, and c when phase a gets magnetized, the rotor will move towards the phase a… Continue reading Why is 3 Phase Induction Motor Self Starting?

The types of induction motors can be classified depending on whether they are a single phase or three phase induction motor. Single Phase Induction Motor The types of single phase induction motors include: Split Phase Induction Motor Capacitor Start Induction Motor Capacitor Start and Capacitor Run Induction Motor Shaded Pole Induction Motor Three Phase Induction… Continue reading Types of Induction Motors

We need to give double excitation to make a DC motor to rotate. In the DC motor, we give one supply to the stator and another to the rotor through brush arrangement. But in induction motor, we give only one supply, so it is interesting to know how an induction motor works. It is simple,… Continue reading Working Principle of Induction 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… Continue reading What is an Induction Motor?