SERMAT manufacturer of electric alternators and starters

An alternator is an electrical generator that converts mechanical energy into electrical energy in the form of alternating current (AC). Most electric alternators consist of a coil and a magnet to create a rotating magnetic field.

The starter is an electromechanical device that starts a device in order to produce energy and run an engine.

Stator

The fixed part of the alternator, the stator, is made up of coils of wire wound around iron poles. These coils are arranged to form a magnetic field when the rotor rotates.

Rotor

The rotor, the moving part of the alternator, is fitted with a magnet or electromagnet that creates a magnetic field. The rotor rotates inside the stator, inducing an electric current in the stator coils.

Diode bridge

A set of diodes that converts the alternating current produced by the alternator into direct current (DC) in systems that require it, such as in vehicles to recharge the battery.

Voltage regulator

The voltage regulator is a device that maintains the alternator's output voltage at a constant level despite variations in load and rotor speed.

Production of the magnetic field

The rotor of an electric alternator is driven by a source of mechanical energy, such as an engine in a vehicle or a turbine in a power station. As it rotates, the alternator rotor creates a magnetic field.

Electromagnetic induction

The rotating magnetic field of the rotor passes through the coils of the stator, inducing an electric current in them by electromagnetic induction, according to Faraday's law.

Generation of alternating current

The continuous movement of the rotor of an electric alternator generates an alternating current in the stator coils, the frequency of which depends on the speed of rotation of the rotor.

Regulation and conversion

The voltage regulator ensures a stable output from the alternator. If necessary, the diode bridge converts the alternating current into direct current.

Alternators are used in many applications because of their ability to produce alternating current efficiently and reliably. Electrical alternators are widely used in a variety of applications, including vehicles, power plants and portable generators.