Synchronous motor starting methods: Frequency control, Damper winding & more

Synchronous motor starting methods

There are three main synchronous motor starting methods: The first is by reducing the supply frequency, the second is by using an external motor, and the last is to start with damper windings. The external motor drives the synchronous motor shaft. It can either be a pony motor, a DC motor, or an Induction motor. … Read more

25 key differences between Squirrel cage and Wound Induction Motor

Differences between squirrel cage and wound induction motor

If we classify an induction motor based on the type of rotor used, there are two types of induction motor. The first is a Squirrel cage Induction motor, and the other is a Wound, aka slip ring Induction motor. Both these induction motors have a difference in their construction, starting, cost, and their application. This … Read more

5 Induction motor starting methods: DOL, Star-Delta & more

Induction motor starting methods

There are four methods to start a squirrel cage induction motor. These are Direct On-Line (DOL), Stator resistance, Auto-transformer, and Star-delta starting, while for a slip-ring induction motor, we prefer rotor resistance starting. Now, you might think that an induction motor is self-starting, then why do we need induction motor starting methods? Right? Don’t worry … Read more

15 key differences: Single-phase vs Three-phase Induction motor

difference between a single-phase and a three-phase induction motor

An induction motor is the most commonly used AC motor in homes, offices, and industries. The reasons are its low cost, rugged construction, and sufficiently high efficiency. Based on the AC power supply given to the motor, there are two types of Induction motors, viz, Single-phase and a Three-phase Induction motor. In this article, we … Read more

Speed Control of a Synchronous motor: Methods & Applications

Speed control of a Synchronous motor

A Synchronous motor is a type of AC motor that runs at a constant speed. And before discussing the speed control methods of a Synchronous motor, let us see how to find the speed of a synchronous motor. Using this simple formula: , we can calculate the synchronous speed of any synchronous motor.Let’s look at … Read more

Single phase Induction motor: Construction, Working & Starting methods

single phase induction motor

A single-phase induction motor is a type of AC motor which consists of a single-phase winding on the stator and requires a single-phase AC supply to create a working flux for the motor. But have you ever thought, why do we need a single-phase induction motor when we already have a three-phase induction motor?It is … Read more