What are the classification of motors?

We know there are generally two types of motors, AC motor, and DC motor. AC motors are flexible for speed control and demand low power during start. On the other hand, DC motors are widely used due to its initial cost of low power units is less compared to AC and can be easily installed.

What are the two common type of 3-phase motor?

There are two classes of 3-phase motors: Wye and Delta. Three-phase motors are also constructed to operate at two different voltages , and so the coils can be connected in either their high-voltage or low-voltage configurations.

What are the properties of 3-phase induction motor?

The torque-speed characteristics of a three-phase induction motor is a straight line between the no-load and full-load operating points. The slope of the curve line depends upon the resistance of the rotor circuit i.e. the higher the rotor circuit resistance, the sharper the slope of the curve.

What are the 3 types of motor?

Types of Electric Motors

Synchronous Motors. 3 Phase Induction Motors (a type of induction motor) Single Phase Induction Motors (a type of induction motor)

What are the 4 types of motors?

There are 4 main types of DC motors:
  • Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux. …
  • Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. …
  • Shunt DC Motors. …
  • Compound DC Motors.

What are the 3 types of 3-phase motors?

Three-phase AC motors can be divided into three general types: squirrel-cage, wound-rotor and synchronous.

What is the application of 3-phase induction motor?

Applications of 3-Phase Wound-Rotor Induction Motor

They are used for loads that requires speed control. Typical applications of wound rotor or slip ring induction motors are crushers, plunger pumps, cranes & hoists, elevators, compressors and conveyors.

What are the characteristics of a 3-phase motor?

– Three-phase motors have three sets of windings (coils) that are separated in the stator by 120 electrical degrees. – Each set of windings is energized by a power wire that feeds a sine wave that is electrically out of phase with the other two phases by 120 electrical degrees.

What is DC motor classification?

There are 3 main types of DC motor that are available: Series, Shunt and Compound. These terms relate to the type of connection of the field windings with respect to the armature circuit.

What is the most common type of motor?

3-phase AC induction motors
Alternating Current (AC) Motors. AC motors include 3-phase and single phase types. 3-phase AC induction motors are the most widely used motors in industrial and commercial applications.

What is AC motor and DC motor?

An AC motor can be defined as an electric motor which is driven by an alternating current (AC). A DC motor is also a rotatory electric motor that converts Direct current (DC energy) into mechanical energy. 2. Types. AC motors are mainly of two types, which are synchronous AC motors and induction motors.

What are the different types of AC motors?

Classification of AC motors
  • Asynchronous Motors. Induction Motors. Squirrel Cage. Slip-Ring.
  • Commutator Motors. Series. Compensated. Shunt. Repulsion. Repulsion induction. Repulsion-start induction.

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.

What is the application of induction motor?

Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFD) in variable-speed service.

What are the types of induction motor?

Single-phase induction motors and three-phase induction motors are the two main types of induction motors. As their names imply, a single-phase induction motor is connected to a 1 phase AC power supply and a three-phase induction motor is provided with 3 phase AC power supply.

What are the applications of 3-phase induction motor?

Applications of 3-Phase Wound-Rotor Induction Motor

They are used for loads that requires speed control. Typical applications of wound rotor or slip ring induction motors are crushers, plunger pumps, cranes & hoists, elevators, compressors and conveyors.

What is torque of a motor?

Torque relates to the rotational force of an electric motor while speed refers to the rate that the motor can rotate. This means that torque is associated with rotational force while speed relates to the rate of rotation which can be calculated by examining the RPMs, or revolutions per minute.

Why is it called 3-phase induction motor?

The asynchronous nature of induction motors creates slip—the difference between the rotating speed of the shaft and the speed of the motor’s magnetic field—which allows for increased torque. These motors are powered at the stator, while the rotor induces current—hence the name “induction” motor.

What are the 3 types of 3-phase motors?

Three-phase AC motors can be divided into three general types: squirrel-cage, wound-rotor and synchronous.

What is the principle operation of a three-phase motor?

A 3 phase induction motor derives its name from the fact that the rotor current is induced by the magnetic field, instead of electrical connections. The operating principle of a 3 phase induction motor is based on the production of a rotating magnetic field (r.m.f.).

What is DOL starter?

A DOL starter (also known as a direct on line starter or across the line starter) is a method of starting a 3 phase induction motor. In a DOL Starter, an induction motor is connected directly across its 3-phase supply, and the DOL starter applies the full line voltage to the motor terminals.