Alternator

An alternator is an electromechanical device which converts mechanical energy to alternating current electrical energy. It is an indispensable auto part without which an engine cannot work. In modern vehicles, alternators have replaced generators in automobiles.

Characteristics of Alternator

• It converts mechanical energy to electrical energy.
• It is simpler, lighter and more rugged than a DC generator.
• Most of the time, it uses a rotating magnetic field.
• It requires minimum maintenance.
• The voltage output of a motorcycle alternator can be controlled or regulated by varying the rotor current.
• It uses the principle of electromagnetic induction to produce voltage and current.

Parts of an Alternator
It consist of four parts:

• Rotor
• Stator
• Diode Pack
• Voltage Regulator

Functions of Alternators

• Supply current to charge the battery and run the electrical components of a vehicle.
• It keeps the battery charged and power the vehicle's electric systems.

Maintenance of Alternator parts

• The connection between the alternator and battery, battery terminals, and ground connections should be checked regularly.
• The belt should be checked for wear because a worn belt can slip and cause low output on the alternator.
• The alternator wires, both plus and ground should be checked regularly.
• The alternator brush should be checked.