What is the purpose of using DC current in generators? How would using AC current affect the function of generators?

The type of electricity used by a generator and its purpose

The main function of a generator is to convert mechanical energy into electrical energy. According to the type of electricity, generators can be divided into DC generators and alternators, which have different working principles and applications.

Purpose of use of DC generator

Dc generator is mainly used in the need for stable DC energy, such as DC motor, electrolysis, electroplating, electric smelting, charging and alternator excitation power supply. The advantage of DC is that its current direction remains the same, which makes it particularly suitable for devices that require a continuous current direction, such as battery charging and the power supply of certain electronic components.

The purpose of using alternator

Alternators are mainly used in automobiles and other equipment that requires alternating current, such as home electricity, industrial power systems, etc. The direction of the current produced by the alternator changes with time, and the frequency is usually 50Hz or 60Hz, which matches the design of most electrical equipment. The alternator uses a built-in rectifier circuit to convert alternating current to direct current for use by the car and charges the battery at the same time.

The effect of using alternating current on generators

The AC generator works slightly differently than the DC generator. The alternator actually produces alternating current, but because it is equipped with a rectifier, it can convert alternating current into direct current for the use of automotive electrical equipment. Therefore, the output of the alternator is direct current, which allows it to directly supply power to the electrical needs of the car, including the ignition system.

In general, the choice of whether the generator uses direct current or alternating current mainly depends on the needs of the end user. Direct current is suitable for devices that require a constant current direction, while AC is widely used in systems that require AC power and can meet the power needs of most vehicles through a built-in conversion mechanism.