在大功率晶体管逆变器——电动机驱动系统中，它不但可用来对电动机电流的波形、相位、幅值和频率进行精细控制，而且能快速地检测出故障电流。
In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.
例如，它是常见的仍发现在电力基础设施UPS系统使用诸如相位控制scr和湿电池的成熟技术。
For example, it is common to still find UPS systems in electricity infrastructure using mature technologies such as Phase Control SCR and wet cell batteries.
相位裕量是控制系统设计的一个极为重要的参数。
Phase tolerance is an important parameter in designing control systems.
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