This effect can be measured in either the time domain by observing the rate of decay of voltage or in the frequency domain by measuring phase shifts between sinusoidal currents and voltages.
这个效应可以在时间域通过观测电压的衰变率来测量,也可以在频率域通过正弦电流和电压之间的相变来测量。
The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.
伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。
Due to three-phase capacitance to ground, certain voltage exists between the neutral and the ground for a generator with ungrounded neutral.
对于中性点不直接接地的发电机,由于三相对地电容值存在差异,中性点与地之间存在一定电压。
This controller's input signal is the voltage phase Angle difference between two areas obtained by PMU, which can effectively reflect the inter-area low frequency oscillation characteristics.
该控制器以PM U得到的区域间电压相角差信号作为输入信号,能够直接有效地反映区域间低频振荡特性。
To reduce the inductor and the phase displacement between the input current and the input voltage simultaneously, Multi-level (ML) converters are adopted as the PFC topologies in this thesis.
为了同时减小电感和输入电流与输入电压间的相位差,本文提出采用多电平变换器作为PFC变换器的拓扑。
Optimizing the matching net and reducing the phase angle between the output voltage and current to reduce the reflection power of the loads, iv.
优化匹配网络,减小负载电流和电压的相角,以减少负载反射功率;
Several issues of power quality are presented, including harmonics, reactive power, three phase unbalance, large difference between peak load and vale load, voltage disturbance and so on.
第一章简单介绍了目前电网存在的几种问题,包括谐波问题、无功问题、三相不平衡问题、用电峰谷差过大的问题以及电压异常、断电问题等;
The phase difference often needs to be measured between two signals with the same frequency in power system, such as power voltage and power current signals.
在电力系统中常常需要对两个同频率信号(如工频电压和工频电流)之间的相位关系进行准确的测量。
The key to the detection of MOA resistive current is the detection of the phase difference between fundamental component of voltage and fundamental component of leakage current.
MOA阻性电流检测的关键在于电压基波分量与泄漏电流基波分量相位差的检测。
This thesis analyzes the zero-crossing distortion, and points out that the major causes are the inductor and the phase displacement between the input current and the input voltage.
本文对产生输入电流过零畸变的各种原因进行了定量分析,指出电感和输入电流与输入电压间的相位差是影响高频输入下输入电流过零畸变严重的根本原因。
If the signals are out-of-phase the output will be a DC voltage that is proportional to the phase difference between the two inputs.
如果信号的相位有差别就会输出一个DC(直流)电压,这个电压正比于两个输入间的相位差。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
经研究发现,零序变压器输出电压与断相点间电压u _ (A' A)成正比。
Check the corresponding relationship between metering current and metering voltage of controller, the metering current and the metering voltage should be in-phase.
应检查控制器的测量电流和测量电压的对应关系,测量电流与测量电压应为同相。
The maintenance locking cocurrent control voltage provides by the discriminator, therefore between the discriminator two input signal leaves leeway certain phase difference.
维持锁定的直流控制电压由鉴相器提供,因此鉴相器的两个输入信号间留有一定的相位差。
The maintenance locking cocurrent control voltage provides by the discriminator, therefore between the discriminator two input signal leaves leeway certain phase difference.
维持锁定的直流控制电压由鉴相器提供,因此鉴相器的两个输入信号间留有一定的相位差。
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