How do DC generators work?
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, an electromotive force gets induced within the conductor. If the conductor is present with a closed lane, the current which is induced will flow in the lane.
What are DC generators used for?
Applications of DC Generators These generators are used to charge batteries, provide lighting and provide excitation to alternators. They are used to provide field excitation current for regenerative braking in DC locomotives. They are used in DC motors where speed control is necessary.
What are the examples of DC generators?
The alternator in a car (i.e., the DC generator which recharges the battery) is a common example of a DC generator of the type discussed above. Of course, in an alternator, the external torque needed to rotate the coil is provided by the engine of the car. Figure 42: Emf generated in a steadily rotating DC generator.
Are there DC generators?
There are two types of generators–DC generators and AC 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.
What is a DC generator called?
A dynamo is an electrical generator that creates direct current using a commutator.
How does a DC generator start?
Working principle of a DC generator: In a DC generator, field coils produce an electromagnetic field and the armature conductors are rotated into the field. Thus, an electromagnetically induced emf is generated in the armature conductors. The direction of induced current is given by Fleming’s right hand rule.
What is a DC series generator?
It is a machine that works on the principle of electromagnetic Induction and it converts the mechanical input given to electrical energy. The field winding is attached in series with the armature winding of this type of machine.
What is DC generator explain the various parts of DC generator and also explain the role of each part of 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.
What are the characteristics of DC generator?
Characteristics of DC Generators
- Open Circuit Characteristic (O.C.C.) (E0/If)
- Internal or Total Characteristic (E/Ia) An internal characteristic curve shows the relation between the on-load generated emf (Eg) and the armature current (Ia).
- External Characteristic (V/IL)
What is DC and AC generator?
AC Generator is a device which converts mechanical energy to AC Electrical Energy. DC Generator is a device which converts mechanical energy to DC Electrical Energy. In AC Generator, Direction of electrical current reverses periodically.
What are the main part of DC generator?
Parts of dc generator
- Stator. A direct-current (DC) generator consists of two main parts, a rotating section and a fixed one.
- Rotor or Armature Core.
- End Housings.
- Bearings.
- Yoke.
- Poles.
- Pole Shoe.
- Commutator.
What are the main components of a DC generator?
The key parts of DC generators are yoke, poles, pole shoes, armature core, armature winding, commutator, brushes, magnetic field system, commutator, end housings, bearings, and Shafts.