Principle And Operation Of Dc Generator Pdf

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The initial electromagnetic generator Faraday disk was invented by British scientist namely Michael Faraday in the year

All the generators works on a principle of dynamically induced e. The relative motion can be achieved by rotating conductor with respect to flux or by rotating flux with respect to a conductor. So a voltage gets generated in a conductor, as long as there exists a relative motion between conductor and the flux.

A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. This article outlines basic construction and working of a DC generator. Note: Theoretically, a DC generator can be used as a DC motor without any constructional changes and vice versa is also possible. These basic constructional details are also valid for the construction of a DC motor.

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Now there are two possibilities:. This is produced by a permanent magnet or electromagnet. The electromagnet consists of silicon steel core and copper windings. It consists of armature made of silicon steel having slots and teeth. Copper windings are placed in the slots of rotating armature. The voltage induced is given by where B is flux density.

Let us consider an elementary two pole generator as shown in Figure 1. A conductor starts moving in the direction shown from position 1. It is under the influence of North Pole up to position 3 and generates a positive half cycle. Similarly under the influence of South Pole a negative half cycle is generated. Differentiating equation 2. From the above discussion it is obvious that alternating voltage is being generated in this elementary generator.

This alternating voltage is converted to direction voltage by the use of commutator. From equation 2. Add to Cart. Instant access upon order completion.

Free Content. More Information. Rehmani Principle of DC Generator. IGI Global. Muhammad Amin , and Mubashir Husain Rehmani. Available In. DOI: Current Special Offers. No Current Special Offers. Abstract In this chapter, the authors discuss about principles of DC generator, variation of voltage induced in the conductor with the position of conductor.

After that the authors discuss frequency of induced voltage, magnitude of induced voltage. This chapter ends with discussion of the main parts and construction of a DC machine. Chapter Preview. Magenetic Field This is produced by a permanent magnet or electromagnet. Rotating Armature It consists of armature made of silicon steel having slots and teeth. Copper windings are placed in the slots of rotating armature The voltage induced is given by.

Basic construction and working of a DC Generator.

In a separately excited generator field winding is energized from a separate voltage source in order to produce flux in the machine. So long the machine operates in unsaturated condition the flux produced will be proportional to the field current. In order to implement shunt connection, the field winding is connected in parallel with the armature. It will be shown that subject to fulfillment of certain conditions, the machine may have sufficient field current developed on its own by virtue of its shunt connection. In series d.

In a separately excited generator field winding is energized from a separate voltage source in order to produce flux in the machine. So long the machine operates in unsaturated condition the flux produced will be proportional to the field current. In order to implement shunt connection, the field winding is connected in parallel with the armature. It will be shown that subject to fulfillment of certain conditions, the machine may have sufficient field current developed on its own by virtue of its shunt connection. In series d.


Thus brushes are physically in contact with armature conductors hence wires can be connected to brushes. Commutator. Page 4. WORKING PRINCIPLE OF A DC​.


Basic construction and working of a DC Generator.

Now there are two possibilities:. This is produced by a permanent magnet or electromagnet. The electromagnet consists of silicon steel core and copper windings. It consists of armature made of silicon steel having slots and teeth.

 - Расскажи, что с тобой случилось. Сьюзан отвернулась. - Не имеет значения. Кровь не. Выпустите меня отсюда.

Она бесхитростна и целеустремленна, и когда достигнет своей цели, то скорее всего совершит цифровое самоубийство.  - Джабба театральным жестом указал на громадный экран.  - Дамы и господа, - он опять тяжело вздохнул, - перед вами компьютерный агрессор-камикадзе… червь. - Червь? - с недоумением переспросил Бринкерхофф. Название показалось ему чересчур земным для такого агрессора.

Principle of DC Generator

 Нет, сэр. Казалось, старик испытал сильнейшее разочарование. Он медленно откинулся на гору подушек. Лицо его было несчастным. - Я думал, вы из городского… хотите заставить меня… - Он замолчал и как-то странно посмотрел на Беккера.  - Если не по поводу колонки, то зачем вы пришли.

Она отвернулась. Дэвид терпеливо ждал. - Сьюзан Флетчер, я люблю. Будьте моей женой.


The working principle of the DC generator is based on Faraday's laws of electromagnetic induction. When a conductor is located in an unstable magnetic field.


Фонд постоянно выступал против того, что именовалось им оруэлловскими средствами подслушивания, имеющимися в распоряжении правительственных агентств, прежде всего АНБ. Этот фонд был для Стратмора постоянной головной болью. - Не вижу ничего нового, - сказала Сьюзан.

 Если Стратмор не забил тревогу, то зачем тревожиться .

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