Types Of Dc Motor And Its Application Pdf

types of dc motor and its application pdf

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A Direct Current Moto r, DC is named according to the connection of the field winding with the armature. Mainly there are two types of DC Motors. The self-excited motors are further classified as Shunt wound or shunt motor, Series wound or series motor and Compound wound or compound motor.

Premium Membership. Learn from experienced power engineers. As you already know, there are two electrical elements of a DC motor, the field windings and the armature.

Characteristics of DC motors

As we know, an electric motor plays a vital role in every sector of the industry, and also in a wide range of applications. There are a variety of types of electric motors are available in the market. The selection of these motors can be done based on the operation and voltage and applications. The main function of field winding is to produce the fixed magnetic field, whereas the armature winding looks like a conductor which is arranged within the magnetic field. Because of the magnetic field, the armature winding uses energy to generate an adequate torque to make the motor shaft turn.

These terms relate to the type of connection of the field windings with respect to the armature circuit. A DC series motor will have its field windings connected in series with the armature. The series winding will have relatively few turns of larger wire or copper strip which are capable of carrying the full load current of the motor. On starting, because the windings are low resistance, a large current can be drawn producing a high starting torque. This is an advantage for high starting loads such as traction, crane and other heavy applications. The speed of a series motor is dependent on the load, so when the full load current flowing through the circuit has reduced, the speed will have increased.

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Different Types of Electric Motors

Which is attached to the field with a field coil armature in DC motors, it is called a series motor. Its field coil is made of a low-angle thick wire. Such motors are very high work in the starting. When changes in armament currents are changed in such motors, flux changes also. In other words, the load decreases with speed as much as it grows. Similarly, when the load decreases, the reduction in currents And increase in the back emf. The increase in the speed of the emf should also increase its speed and the increase in the speed in the speed of this is in the root ratio.

A DC motor is any of a class of rotary electrical motors that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor. DC motors were the first form of motor widely used, as they could be powered from existing direct-current lighting power distribution systems. A DC motor's speed can be controlled over a wide range, using either a variable supply voltage or by changing the strength of current in its field windings. Small DC motors are used in tools, toys, and appliances. The universal motor can operate on direct current but is a lightweight brushed motor used for portable power tools and appliances.

Recieve free updates Via Email! Home Electrical machines Power system Ask a question Contact electricaleasy. Share: Facebook Twitter Linkedin. Generally, three characteristic curves are considered important for DC motors which are, i Torque vs. These are explained below for each type of DC motor. These characteristics are determined by keeping the following two relations in mind.


PDF | On May 3, , Ahmed M T Ibraheem Alnaib published DC Motors | Find, read and cite all the research you need on 1- Most of the electrical machines in service are AC types. 2- DC Application of DC Machines: The efficiency of a DC motor is the ratio of its mechanical output power.


Electrical D.C. motors

From robotics to automobiles, small and medium sized motoring applications often feature DC motors for their wide range of functionality. Because DC motors are deployed in such a wide variety of applications, there are different types of DC motors suited to different tasks across the industrial sector. The permanent magnet motor uses a permanent magnet to create field flux. This type of DC motor provides great starting torque and has good speed regulation, but torque is limited so they are typically found on low horsepower applications.

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Types of DC Motors

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Permanent Magnet DC Motor (PMDC Motor) Separately Excited DC Motor. Self Excited DC Motor. Shunt Wound DC Motor. Series Wound DC Motor. Compound Wound DC Motor. Short shunt DC Motor. Long shunt DC Motor.

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AC motors are highly flexible in many features including speed control VSD - Variable Speed Drives and have a much larger installed base compared to DC motors, some of the key advantages are:.

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