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Electrical Engineering

Grid Connection of AC Synchronous Generators

Description

AC synchronous generators are a major source of electrical power worldwide. They are three-phase, wound-rotor machines that are used in many power plants.

These generators need a prime mover and an exciter to produce power. A prime mover is the device that spins the generator, often a turbine dri...

Transcript

三相交流同步发电机是全球发电厂电力生产的核心设备,常用于稳定电网。将同步发电机的相序、电压幅值和频率与电网中的参数匹配至关重要。如果发电机与电网相位不同步,则无法输送电能。尽管大型发电厂通常使用自动同步装置,但本文将演示一种简单的手动同步方法。本视频将介绍三相同步发电机,并展示调节电压和频率输出以实现发电机与电网手动同步的操作步骤。

交流同步电机由内部旋转的核心(即转子)和外部静止的环形结构(即定子)组成。转子磁场由施加的直流电压产生,保持静止。定子磁场则通过三相交流电激励产生,每相分别连接到各自独立的一组定子线圈。这会感应出一个幅值恒定、旋转频率与电源电流振荡相对应的旋转磁场。定子与转子的磁场相互耦合,使转子以与定子旋转磁场完全相同的速度旋转。有关交流同步电机特性的更多信...

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