Direct Current Dc Generator Diagram

A dc generator or direct current generator is one kind of electrical machine and the main function of this machine is to convert mechanical energy into dc direct current electricity.

Direct current dc generator diagram.

Direct current dc direct current is a bit easier to understand than alternating current. However many early uses of electricity required direct current dc. Dc generator differ from an ac generator. There are two types of generators dc generators and ac generators.

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. Before we can explain the working principle of a dc generator we need to cover the basics of generators. Both dc and ac generators convert mechanical power to electrical power a dc generator produces direct power while an ac generator produces alternating power. Construction of a dc machine.

The basic design of ac and dc generators is similar. When direct current passes through the field winding it magnetizes the poles which in turns produces the flux. In the first practical electric generators called dynamos the ac was converted into dc with a commutator a set of rotating switch contacts on the armature shaft. By ron kurtus revised 17 october 2019 a direct current dc electric circuit consists of a source of dc electricity such as a battery with a conducting wire going from one of the source terminals to a set of electric devices and then back to the other terminal in a complete circuit.

A dc circuit is necessary for dc electricity to exist. Direct current may flow through a conductor such as a wire but can also flow through semiconductors insulators or even through a vacuum as in electron or ion beams the electric current flows in a constant direction distinguishing it from alternating. Dc can be generated in a number of ways. The field coils of all the poles are connected in series in such a way that when current flows through them the adjacent poles attain opposite polarity.

A coil of wire rotating in a magnetic field produces a current which changes direction with each 180 rotation an alternating current ac. Rather than oscillating back and forth dc provides a constant voltage or current. The current so produced is called direct current dc. What is a dc generator.

Armature of dc generator. Although dc generators are no longer used in the majority of automobile electrical systems ac alternators using bridge rectifiers to convert ac to dc are used instead with the rectifier circuit naturally preventing reverse current this application provides an excellent opportunity to explore an application of relay technology in the context. This article outlines basic construction and working of a dc generator. An ac generator equipped with a device called a commutator can produce direct current.

The two generators differ only in the design of slip rings at the ends of the coil wire. Direct current dc electric circuits.