发电机的分类有哪些？

What are the classifications of generators?

　　发电机的分类方式通常有以下三种：

There are usually three classification methods for generators:

　　按驱动动力分类

Classified by driving force

　　发电机驱动动力的形式有多种，常见的的动力机有：

There are various forms of power driven by generators, and common power machines include:

　　风力发电机就是依靠风力带动发电机转动，产生电流；这种发电机无需消耗额外能源，是一种无污染的发电机。

A wind turbine relies on wind power to drive the generator to rotate and generate current; This type of generator does not require additional energy consumption and is a pollution-free generator.

　　水力发电机是利用水流的落差，产生动力，带动发电机发电，也是利用绿色自然资源发电的设备，又称水轮发电机。

A hydroelectric generator is a device that utilizes the drop of water flow to generate power, drives the generator to generate electricity, and also utilizes green natural resources for power generation, also known as a hydroelectric generator.

　　燃油发电机是依靠柴油或汽油燃烧产生动力带动发电机组的。遇到停电，就可启动燃油发电机发电，以维持正常工作。

Fuel powered generators rely on diesel or gasoline combustion to generate power and drive the generator set. In the event of a power outage, the fuel powered generator can be started to generate electricity and maintain normal operation.

　　按转换的电能方式分类

Classified by the method of converting electrical energy

　　按转换的电能方式可分为交流发电机和直流发电机两大类。

According to the conversion method of electrical energy, it can be divided into two categories: AC generators and DC generators.

　　交流发电机又分为同步发电机和异步发电机两种。同步发电机又分为隐极式同步发电机和凸极式同步发电机两种。现代发电站中最常用的是同步发电机，异步发电机很少用。

AC generators are divided into two types: synchronous generators and asynchronous generators. Synchronous generators are divided into two types: hidden pole synchronous generators and salient pole synchronous generators. The most commonly used in modern power plants is synchronous generators, while asynchronous generators are rarely used.

　　交流发电机组又可分为单相发电机和三相发电机两种。三相发电机输出电压为380V,单相发电机输出电压为220V.

AC generator sets can be divided into two types: single-phase generators and three-phase generators. The output voltage of a three-phase generator is 380V, and the output voltage of a single-phase generator is 220V

　　按励磁方式分类

Classified by excitation method

　　按励磁方式可分为刷励磁发电机和无刷励磁发电机两类

According to the excitation method, it can be divided into two types: brush excitation generators and brushless excitation generators

　　有刷励磁发电机的励磁方式为他励式，无刷励磁发电机的励磁方式为自励式。他励式式发电机的整流装置是在发电机定子上，而自励磁式发电机的整流装置是在发电机组的转子上。

The excitation method of a brushless excitation generator is separate excitation, while the excitation method of a brushless excitation generator is self excitation. The rectification device of a self-excited generator is located on the stator of the generator, while the rectification device of a self-excited generator is located on the rotor of the generator set.

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