UC知道帮忙翻译段英语
来源：百度知道 编辑：UC知道 时间：2024/05/26 00:42:32
In the chapter on mixed-frequency signals, we explored the concept of harmonics in AC systems: frequencies that are integer multiples of the fundamental source frequency. With AC power systems where the source voltage waveform coming from an AC generator (alternator) is supposed to be a single-frequency sine wave, undistorted, there should be no harmonic content . . . ideally.
This would be true were it not for nonlinear components. Nonlinear components draw current disproportionately with respect to the source voltage, causing non-sinusoidal current waveforms. Examples of nonlinear components include gas-discharge lamps, semiconductor power-control devices (diodes, transistors, SCRs, TRIACs), transformers (primary winding magnetization current is usually non-sinusoidal due to the B/H saturation curve of the core), and electric motors (again, when magnetic fields within the motor's core operate near saturation levels). Even incandescent lamps generate slightly nonsinusoidal c
This would be true were it not for nonlinear components. Nonlinear components draw current disproportionately with respect to the source voltage, causing non-sinusoidal current waveforms. Examples of nonlinear components include gas-discharge lamps, semiconductor power-control devices (diodes, transistors, SCRs, TRIACs), transformers (primary winding magnetization current is usually non-sinusoidal due to the B/H saturation curve of the core), and electric motors (again, when magnetic fields within the motor's core operate near saturation levels). Even incandescent lamps generate slightly nonsinusoidal c
在混合- 频率信号上的章中，我们探究了 AC 系统的和声学的观念: 基本的来源频率的完整事物复的频率. 藉由来自一个 AC 产生器 (交流发电机) 的来源电压波形应该是一个单一频率正弦波的 AC 力量系统,未扭曲的,应该有不调和的内容 . . . 理想地.
这会是真实的如果不是非线性成份. 非线性成份不成比例有关于来源电压引起涌流,引起非正弦曲线现在的波形. 非线性成份的例子包括瓦斯- 解除的灯，力量- 控制的装置 (两极管，电晶体， SCRs,闸路控制) ，变压器 ( 卷绕磁化涌流的提名候选人的预选会通常是非正弦曲线由于核心的 B/ H 浸透曲线) 和电的马达半导体 (再一次,当磁性在核心在浸透水平的附近操作的马达里面回答的时候). 甚至白热的灯些微地产生非正弦的涌流, 如细丝抵抗由于迅速的变动在周期各处在温度中改变. 当我们在混合- 频率章中学习,任何一以别的方式正弦的扭曲-被成形波形的波组成调和频率的出现.
当问题的非正弦的波形在上面是对称的，而且在它的平均中线下面，调和的频率将会只有是基本的来源频率的奇数完整的事物复的时候,藉由没有平坦的完整事物复. 大多数的非线性装载生产品现在的像这波形, 和如此偶数和声学 ( 第二, 第 4, 第 6, 第 8, 第 10, 第 12,及其他.) 缺席或者唯一的最小地在大多数的 AC 力量系统中呈现.