The Difference between AC Diesel Generators and DC Diesel Generators 2

How are alternating current and direct current generated?

DC electricity can be generated in various ways: DC electricity can be generated by an AC generator with a device called a "commutator". Using a rectifier, a device that converts alternating current into direct current. Batteries generate direct current through chemical processes inside the battery.

The difference between AC generator and DC generator: use and maintenance

The output voltage generated by an AC generator is called an AC generator. The normal frequency of AC generators in our country is 50Hz. The output voltage varies in time and amplitude. A DC generator generates a stable output voltage, suitable for supplying power to large motors. DC generators are mainly used to supply power to large motors, while AC generators are used for small motors. You can use alternating current to power household appliances such as food mixers and electrical equipment.

The maintenance of Dingbo Power's AC and DC generators is enormous. DC generators require frequent maintenance and have lower reliability, while AC generators require less maintenance and are more reliable.

AC generator and DC generator: connectivity

Another difference between AC generators and DC generators is their connectivity. The design of a DC generator can provide seamless connection and efficient power flow. This is mainly because they do not require any conversion switches. However, in terms of AC generators, they require more effort to transmit electricity to remote parts of the grid, resulting in lower connection efficiency.

Different types of AC and DC generators

AC generator:

Single-phase generator

Synchronous generator

Three phase generator

Induction generator

DC generator:

Self-excited DC generator

Series excited generator

Parallel excitation generator

Compound excitation generator

He excited the DC generator

There are different types of AC and DC generators to meet different purposes and needs. Some of them are as follows:

There are different types of AC generators, such as single-phase generators, synchronous generators, three-phase generators, induction generators, etc.

Single phase generator: A single-phase generator (also known as a single-phase AC generator) is an AC generator that generates a single continuous AC voltage, and can be used for power generation in single-phase power systems.

Synchronous generator: A synchronous generator or alternating current generator is an electric motor that converts the mechanical energy of a prime mover into alternating current energy of a specific voltage and frequency. A synchronous motor always operates at a constant speed, which is called synchronous speed.

Three phase generator: The working principle of a three-phase generator is to generate three independent AC waves, which run in sequence to ensure a continuous energy flow and that the power level never drops like a single-phase generator.

Induction generator: Induction generator, also known as asynchronous generator, works similarly to AC generator. The only difference between a regular AC generator and an induction generator is that an induction generator is a rotating device. Due to its lower speed than synchronous generators, induction generators are called asynchronous generators. They are used in mixers and grinders.

There are mainly two types of DC generators: self-excited DC generators and separately excited DC generators. Their armature connections are the same, which is why they are classified as DC generators.

Self excitation type: In self excitation type, the excitation coil is powered by the current generated inside the generator. These types of generators can be further divided into series excited generators, parallel excited generators, and compound excited generators.

Series winding: an excitation winding connected in series with the armature winding

Parallel winding: excitation winding in parallel with armature winding Composite winding: combination of series and parallel windings

Excitation type: In an excitation type generator, the excitation coil is powered by an independent external DC power source. Which is better, AC generator or DC generator?

Finding the best one between an AC generator and a DC generator largely depends on how you want to use it and the results you want. Each of them has several advantages that allow you to fully utilize them, such as:

Advantages of DC generator:

Smooth voltage

Suitable for large motors

Simple design

Advantages of AC generators:

Suitable for electrical appliances and small motors

Low maintenance demand

Easily allocate output using transformers

Efficiency

Relatively lower losses compared to DC generators

Due to the boost function, the transmission link size may be finer

AC generators can be easily stepped up and down through transformers.

The power of an AC generator is relatively lower than that of a DC generator.

Dingbo Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.