Alternator is an electromechanical device of the charging system which is responsible of converting mechanical energy into alternating current while running. The idea is to have a steady stream of voltage to supply the machine, since batteries will run short in long travels. For every Volkswagen model, a Volkswagen alternator is their chief source of energy, supplying all the needed electrical charge for the entire electrical system, including air conditioning units, auto lights, and even the engine itself. It works along with the two other primary parts of the charging system, the battery and regulator. Basically, after converting the mechanical energy into alternating current, the alternator charges the battery. The energy supplied to it is then stocked for the use of startup and other important purposes when the alternator is not yet in full operation, whereas the regulator is deemed to maintain the designated amount of voltage needed in different applications.
The engine's crankshaft belt that connects to the Volkswagen alternator shaft drives the pulley system or rotor of the alternator right after the engine is brought alive. Through the continuous spin some of the mechanical energy of the engine is transferred to the alternator and processed into electricity. An electrostatic field better known as electricity is produced as the magnet across the conductor is moved. This power is then channeled through diodes to recharge the battery or batteries as well as power the vehicle's electric devices continuously as it runs. Other than diodes and shaft, alternator also have rotor which is composed of field windings. There's also the stator or stationary induction system, control device or voltage regulator, and internal fans that make air circulate.