A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. magnetic field system, armature and commutator and brush gear. The other parts of a DC Generator are magnetic frame
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Jun 05, 2018· The principle of single loop DC generator has been described for the basic understanding of DC generator working. Now we will discuss the construction and working of actual generator. The construction of DC generator and DC motor is same therefore instead of DC generator let say DC machine which is more appropriate and cover all aspect of DC motor and DC generator construction.
Apr 25, 2017· Eliminating conversions from DC to alternating current (AC) saves 10-20 percent in electricity consumption. Furthermore, DC has other advantages for power quality and reliability, so future buildings may use a balance of both AC and DC. Chinas conditions are amenable to development and demonstration of DC building systems.
DC Machines Construction The stator of the dc motor has poles, which are excited by dc current to produce magnetic fields. In the neutral zone, in the middle between the poles, commutating poles are placed to reduce sparking of the commutator. The commutating poles are supplied by dc current. Compensating windings are
Mar 21, 2021· An electrical machine which converts mechanical energy into direct current and vice-versa. Read also: A.C Motors: Types, Working, Construction, Applications and More Working of DC Motor. How DC motor Works? Consider a part of multipolar DC motor as shown in the figure.
The simplest type of winding construction used in modern DC machines is the simplex lap winding. A simplex lap winding is a rotor (armature) winding consisting of coils containing one or more turns of wire with the two end of each coil coming out at adjacent commutator segments fig. (1.5). The number of current paths in a machine is :
A DC Machine is an electro-mechanical energy conversion device. There are two types of DC machines; one is the DC generator , and another one is known as DC motor . A DC generator converts mechanical power (ωT) into DC electrical power (EI), whereas, a DC motor converts d.c electrical power into mechanical power.
Sep 13, 2017· The main function of the yoke is to provide protection for whole machine. The yoke is a stationary and outer cylindrical part of DC machines. The cheapness is main consideration therefore yoke is made up of cast iron in the small DC machines but it is made up of cast still or rolled still in the large DC machines.
DC motor construction parts. A DC motor is composed of the following main parts: Field coil or stator. This is a non-moving part of the magnetic circuit on which a winding is wound in order to produce a magnetic field. The electro-magnet that is created has a cylindrical cavity between its poles.
Oct 03, 2020· CONSTRUCTION OF DC MOTOR. All DC machines mainly consist of two parts. One is the stator and the other is Rotor. The stator is a stationary part that includes yoke, pole, pole winding, and Interpoles. The stator produces the magnetic flux. The rotor of the dc machine consists of a commutator, brushes, compensating winding, and a shaft.
Dec 07, 2015· Construction. DC motors and generators have the same basic construction, differing primarily in the energy conversion. The basic requirements are a conductor, flux and relative motion between them. The physical structure of the machine consists of 2 parts: the stator and the rotor.
CONSTRUCTION OF DC MACHINE. Figure given below shows the Construction of a 4-pole DC machine. 4-POLE DC MACHINE: Essential Parts of the DC Machine are discussed below: YOKE. Also called as Frame. Main function of the Yoke is to protect the internal parts of machine from any mechanical injury, dust or moisture. It provides mechanical support to ...
Sep 16, 2017· Make a Simple DC motor with easy and Step by Step instructions. The project mainly describes the concept of electromagnetism, the working principle of the phenomenon and its application in various appliances. DC motor is commonly used in toys for the conversion of electrical energy into mechanical energy to drive them.
Mar 19, 2015· Direct Current Motor (Rotor, Startor) A representative DC machine was depicted in Figure 0 above, with the magnetic poles clearly identified, for both the stator and the rotor.. Figure 1 is a photograph of the same type of machine. Note the salient pole construction of the stator and the slotted rotor. As previously stated, the torque developed by the machine is a consequence of the magnetic ...
II. Demonstrate the working principle of different types of dc machines and transformers. III. Analyze the losses in dc machines to improve the efficiency by conducting various tests. IV. Outline the principle of operation, construction and testing of single phase transformers. UNIT-I
DC generators are used to reimburse the voltage drop within Feeders. DC generators are used to provide a power supply for hostels, lodges, offices, etc. This was a comprehensive explanation about DC generators. From the information above, we can conclude that the main advantages of a DC generator are its simple construction and design.
Feb 24, 2012· The voltage generated in the armature, placed in a rotating magnetic field, of a DC generator is alternating in nature. The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating current in the armature winding of a dc machine is converted into direct current after going through the commutator and the stationary
Jan 01, 2020· Construction of DC Machines In the structure of DC machine either dc motor or generator, there are 2 main parts first one is the static or the second one is
a)Construction of DC Machine The construction of the DC machine can be done using some of the essential parts like Yoke, Pole core & pole shoes, Pole coil & field coil, Armature core, Armature winding view the full answer view the full answer
View Ch4_54_DC_Machine_Construction.pdf from ESO 203T at IIT Kanpur. DC Machine Construction Flux density in pole core is higher than pole shoes
Mar 17, 2021· A DC machine that produces electricity by consuming mechanical energy is a generator. A DC motor that consumes electricity to create mechanical energy is a motor. The same basic DC machine can be either a motor or a generator. Essential Components of a DC Machine. DC machine either uses or produces electrical energy.
Apr 15, 2020· Construction of DC Machine The DC machine consists of Yoke, Pole, and Pole shoe, Armature core, Field Winding, Armature Winding, Commutator, Brushes,
Mar 19, 2015· Direct Current Motor (Rotor, Startor) A representative DC machine was depicted in Figure 0 above, with the magnetic poles clearly identified, for both the stator and the rotor.. Figure 1 is a photograph of the same type of machine. Note the salient pole construction of the stator and the slotted rotor. As previously stated, the torque developed by the machine
For a DC MOTOR, the efficiency is the electrical output power divided by the mechanical input power, or For a DC GENERATOR, the efficiency is the electrical output power divided by the mechanical input power, or Note that the efficiency of a DC machine will
In the first case, the induction machine is used as a motor to accelerate the flywheel and the dc motor, During the acceleration period the rotor current is maintained at its nominal value. When the speed reaches 700 rpm the dc machine picks-up and the acceleration rate increases, the flywheel being accelerated simultaneously by the two machines.
A DC Machine is an electromechanical device that is constructed such that it can be used as a Series, Shunt or Compound DC Generator OR DC Motor. Without trying to explain it with lots and lots of words, lets do it a thousand at a time: If you kno...
May 23, 2019· What are the important parts of DC machine? Construction wise there are four Main parts of DC machine namely field magnet, armature, commutator and brush. Actually a DC machine means a DC motor or a DC generator constructionally both are same. If rotor of a DC machine is rotated through means of a prime mover.
Nov 13, 2015· Construction of a DC Generator A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. magnetic field system, armature and commutator and brush gear.
Feb 04, 2020· Unlike AC motors, DC motors operate on DC powernon-sinusoidal, unidirectional power. Basic Construction. Although DC motors are designed in various ways, they all contain the following basic parts: Rotor (the part of the machine that rotates; also known as the armature) Stator (the field windings, or stationary part of the motor)
Direct current machines are energy transfer devices. These machines can function as either a motor or a generator. DC motors and generators have the same basic construction, differing primarily in the energy conversion. To better understand the operation and construction of DC machines, a few basic terms must be understood. Components of a DC ...
5. The function of pole shoes in a DC machine is to A. Support the field coils B. Reduce the reluctance of the magnetic path C. Spread out the flux to achieve uniform
Apr 22, 2020· Introduction to DC Machines Construction of a DC machine E.M.F. Equation Working principle as a Generator or as a Motor Types of Armature winding Lap winding and Wave winding (concept of simplex, duplex & multiplex winding) Magnetization curve of DC machines Torque Losses & efficiency of DC machines D.C. Machines : Generators
Therefore, a DC motor otherwise a DC generator can be generally called a DC machine. The construction of a 4-pole DC generator is shown below. This generator comprises of several parts like yoke, poles & pole shoes, field winding, an armature core, armature winding, commutator & brushes.
Apr 26, 2019· Construction of DC Machine The construction of the DC machine can be done using some of the essential parts like Yoke, Pole core & pole shoes, Pole coil & field coil, Armature core, Armature winding otherwise conductor, commutator, brushes & bearings. Some of the parts of the DC machine is discussed below. Construction of DC Machine
Jul 05, 2018· Construction of DC Machine. A DC machine consists of two main components: Stator and Rotor. Stator is the stationary part whereas rotor is the rotating part. Stator of DC machine consists of Yoke, Field Winding, Interpoles, Compensating Winding, Brushes and End Cover. Rotor consists of armature core, armature winding, commutator and shaft.
Construction of dc Machines: The rotor in a dc machine is called an armature. The armature has cylindrical steel core that is composed of a stack of slotted laminations. Slots in laminations are aligned axially along rotor or shaft. Armature windings are placed in slots. The stator in a dc machine is the field part of the machine.
Dec 10, 2019· Hello, fellows, I hope all of you are having fun in your life. In todays tutorial, we will have a look at Introduction to DC Machines.Like alternating current machines, there are 2 types of DC machines first one is DC motors that convert electrical power into mechanical power and the second one is DC generator that converts mechanical power into electrical.
The connections showing the separately excited D.C. Machines are given in the figure. Figure: (a) Separately excited D.C. Generator, (b) Separately excited D.C. Motor. 2. Shunt wound D.C. Machine: Shunt wound D.C. Machines is the machine in which field
Mar 31, 2018· DC machine is actually an alternating current machine, but furnished with a special device, called the commutator, which under certain conditions converts ac into dc and vice-versa. Inspite of the fact that the commutator has made the operating condition of a dc machine complicated, it is a highly versatile energy converting device.
View construction of a dc machine (generator or motor).jpg from PSY ABNORMAL P at King Fahd University of Petroleum & Minerals.