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.
分析和实验得出,通过控制入射激光功率密度和作用时间可以实现相变硬化及快速熔化——凝固处理。
The phase transformation hardening and fast melting-solidification by controlling power intensity and shocking-time of laser pulse have been analysed.
本文通过对UPFC实施合理控制,以期望快速显著地平息扰动后系统的功率振荡。
The thesis aims to apply an appropriate control on UPFC to achieve a fast suppression for power system oscillation after some disturbance.
仿真结果表明,DSP控制器可以获得较高的功率因数,且具有快速的电路动态响应、灵活的控制方法以及简洁的硬件设计等特点。
The simulation result shows that the DSP controller has very fast dynamic response and unity power factor, flexible control and simplified hardware design.
为了实现垂直位移方向上的稳定,给主动控制线圈供电的功率放大器,其响应速度必须具有快速性。
For realizing the stability in vertical displacement, the power amplifier must be fast in response for feeding active control coils.
该系统可以测量电机的电压、电流、功率因数、功率、温度、转矩和转速,能够对电机参数进行快速准确地测定分析,用于电机的控制和智能保护。
The system can be adopted to measure electrical machine parameter quickly and accurately as well as analyse measuring data, so it can be used in electrical machine control and intelligent protection.
在大功率逆变器的实时控制中,如何快速准确地计算出SPWM交点是一个关键问题。
How to calculate SPWM cross point rapidly and accurately is a key problem in the real time controller of high power inverter.
为了实现垂直位移方向上的稳定,给主动控制线圈供电的功率放大器的响应速度必须具有快速性。
In order to realize a stabilization system, the response rate of the power amplifier feeding the stabilization coils must be fast enough.
在不同的光伏电池运行点采用不同的跟踪方法,通过直接控制直流斩波器开关占空比以达到快速准确的功率跟踪效果。
Different tracking approaches are applied at different operating points and the duty cycle of DC chopper is directly controlled to achieve the optimum control results.
业界之发展趋势是要求更低的输出电压、更大的功率、更有效控制电源、以及对负载电流的转变有更快速的反应。
Industry trends lean toward lower output voltages, more power, tighter power regulation, and faster response to changes in load current.
压水堆核电站依靠控制棒实现反应堆功率的快速调节和特殊情况下的紧急停堆。
The control rods are used to implement quick regulation of the reactor power and emergent shutdown of the reactor in pressurized water nuclear power station.
采用灵活交流输电系统(FACTS)技术能快速灵活控制系统输电线路的功率流向和大小,充分发挥现有系统的潜力。
Flexible AC transmission system(FACTS) show promise for better utilizing and controlling existing transmission systems. In this paper'several FACTS technologies are introduced.
向下拉的蒸汽管不是很长,但是我发现它可以控制一个很小的增量,在只有少量的使用者的时候快速增加蒸汽功率。
The pull travel of the steam lever isn't very long but I found it easy to control in small increments of increasing steam power after just a few USES.
向下拉的蒸汽管不是很长,但是我发现它可以控制一个很小的增量,在只有少量的使用者的时候快速增加蒸汽功率。
The pull travel of the steam lever isn't very long but I found it easy to control in small increments of increasing steam power after just a few USES.
应用推荐