Types of DC Generator

Please go through the construction of dc generator before reading this article about different types of dc generator.

A DC generator requires MMF to establish flux in its magnetic circuit. The MMF necessary to establish flux in the magnetic circuit of a dc generator is obtained by field excitation.

When a DC voltage is applied to the field windings of a DC generator, current flows through the windings and sets up a steady magnetic field. This is called field excitation.

Field excitation can be obtained by the following means

Permanent magnets
Field coils excited from some external source and
Field coils excited by the generator itself.
The excitation voltage can be produced by the generator itself or it can be supplied by an outside source, such as a battery.

If the flux is established using permanent magnets, then this type of dc generator is called Permanent magnet dc generator.

If the flux is obtained by exciting field coils from some external source, that type of dc generator is called Separately excited dc generator.

If field coils are excited by the generator itself to establish the required flux, then such type of dc generators are called Self-excited dc generators.

[asifalam]

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[poojaumachagi]

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[KiranAb-plrk]

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[jsdhemanth]

What is the role of armature resistance drop ? Can we take it on a every emf equation. sir

[dashingMilitia]

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[AkashKumar-wnhg]

You are not explaining tha topic, you are only reading bro.... Please explain in good way

[abhinandanprusty]

Thank sir please give a equiation and sulve

[shekharnarwal]

seprately ni hoga bhai separately excited dc generator hoga