Dc Generator Types Working Electrical A2z Electrical voltage regulators are used on all new cars. electric generator: construction, working and losses. average and rms value of alternating current and voltage. electrical a2z. there are a number of different types of dc generators such as series, shunt, and compund dc generators which are discussed in detail. A series wound dc generator is a generator that has its field windings connected in series with the armature and the external circuit (load). see figure 1. in a series wound generator, the field windings consist of a few turns of low resistance wire because the load current flows through them. figure 1. a series wound dc generator; (b) wiring.
Dc Generator Types Working Electrical A2z Figure 1. dc generators consist of field windings, an armature, a commutator, and brushes. they operate on the principle that when a coil of wire is rotated in a magnetic field, a voltage is induced in the coil. field windings. field windings are electromagnets used to produce the magnetic field in a dc generator. Dc generators are classified based on how their fields are excited (i.e. produced). there are three methods of excitation, and thus three main types of dc generators: permanent magnet dc generators – field coils excited by permanent magnets. separately excited dc generators – field coils excited by some external source. 2. shunt wound excited generator. these types of dc generators have field windings that are coupled in parallel with the armature conductor, as shown in the figure. in shunt wound generators, the voltage across the field is the same as the voltage across the terminal. in this, r sh = resistance of the shunt winding. A dc generator includes a stator that provides a magnetic field; a rotor coil, which acts as the armature; a commutator to keep a unipolar output; brushes to take power from the armature; bearings to allow the rotor to spin; a cooling fan and a case, which forms part of the return path for the magnetic circuit.
Dc Generator Types Working Electrical A2z 2. shunt wound excited generator. these types of dc generators have field windings that are coupled in parallel with the armature conductor, as shown in the figure. in shunt wound generators, the voltage across the field is the same as the voltage across the terminal. in this, r sh = resistance of the shunt winding. A dc generator includes a stator that provides a magnetic field; a rotor coil, which acts as the armature; a commutator to keep a unipolar output; brushes to take power from the armature; bearings to allow the rotor to spin; a cooling fan and a case, which forms part of the return path for the magnetic circuit. Before explaining the working principle of a dc generator, we need to cover the basics of 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. Fig. 2: schematic representation of a dc shunt generator. dc series generators. in this type of a dc generator, the field winding (y yy) is connected in series with the armature winding (a aa) as shown in fig. 3. the series field winding y yy has comparatively few turns of thick copper wire (or strip) and consequently a low resistance.
Comments are closed.