基波电流

接着根据TCR支路的实际电路，利用傅里叶分解，给出了简化的基波电流的计算公式；

Then , based on the actual circuit of TCR branch , the simplified formula for calculating the fundamental current is showed by Fourier decomposition .

基波电流和任意次数谐波电流检测新方法

A Novel Detective Method for Fundamental Current and Any Term Frequency Harmonic Current

采用了一种适用于单相电路的基于鉴相原理的基波电流检测方法，利用DSP实现了基波电流的实时检测。

A current detection method based on the principle of distinguish phase was adopted . The use of DSP realized real-time detection of fundamental current .

通过MATLAB计算，与传统补偿思路进行了基波电流、电容电压波动等多项指标的比较，证明优化设计原理在各项指标上部具有明显的优势。

Comparisons of the optional design and conventional compensation principle are made with MATLAB simulation , which demonstrate the advantages of the optional design in the aspects of maximum phase compensation current and DC voltage ripple .

本文对三相三线制带基波电流旁路通道的串联混合有源滤波器提出了基于双dq变换的控制方法。

Dedicated to three-phase three-line system and series hybrid APF with fundamental bypass channel , control scheme based on dual d-q transformation is presented in this dissertation .

发电机只能供给基波电流。

The generators will supply the fundamental component of the current .

一种单相电路谐波及基波电流检测方法

A Detection Method for Harmonic and Fundamental Currents in Single-Phase Circuit

矿热炉不平衡状态下的基波电流检测方法研究

Research on detecting method of fundamental currents for unbalance submerged arc furnace

基于二阶串联谐振滤波器的基波电流检测方法

Fundamental current detection based on 2nd-order serial resonant filter

基波电流注入法实现的单相接地选线

Single-phase earthing line selection based on first-harmonic current injection

该方法的算法简单且容易实现，可以实时准确地检测出基波电流或各次谐波电流。

The arithmetic of this method is simple and can be realized easily .

这种脉动转矩的频率为基波电流频率的六倍。

Frequency of this pulsating torque is six times as high as that of the fundamental current .

文章提出了一种基于有限长余弦型单位脉冲响应滤波器的实时基波电流检测方法。

In this paper , a instantaneous first-harmonic current detecting method based on cosine FIR filter is introduced .

该方法通过对负载电流进行小波分解，获得负载电流的低频分量，由低频分量重构得到基波电流，从而滤除负载电流中的谐波。

The low frequency component is obtained by wavelet decomposition of load current . The low frequency component is reconstructed to get fundamental current .

快速、准确、实用的负序基波电流检测方法对于电能质量监测与控制、继电保护等具有极其重要的意义。

For the power quality control and relay protection , it is very important of rapid , correct and practical detection of the negative sequence fundamental current .

它检测一次侧基波电流并用逆变器产生多个基波补偿电流注入二次侧的多绕组中。

The fundamental component of the primary windings is detected and tracked so as to produce multiple compensation currents , which are injected to the multiple secondary windings .

当输入电压不变时，实现可变电抗器导纳的改变，就能改变基波电流，从而导致电抗器吸收无功功率的变化。

When the input voltage is constant , transforming reactor to achieve admittance changes , you can change the fundamental current , resulting in reactors absorb reactive power changes .

本文将带基波电流旁路通道的串联混合有源电力滤波器应用于三相四线制非线性负载的谐波抑制，提出了基于鉴相原理的控制方法，并由仿真证实了该方法的有效性。

As for the three-phase four-line system , control scheme based on phase identifying principle is presented in this dissertation , accordingly , the validity is verified by simulation .

若在适当端口施加正弦电压源，则网络的稳定性取决于进入端口基波电流的实功与虚功成份的符号值。

When exciting Sin voltage source is applied to proper port , the stability of network depends on the sign of active and reactive components for fundamental-wave current entering port of networks .

基于数值方法，分析了电网电抗及电网频率摄动时流入滤波装置各通道基波电流的变化过程。

Under the perturbation of source impedance and frequency of the power system , changes in fundamental current of inject into every filter of passive power device was analyzed based on numerical method .

针对转子断条故障信号相对电机基波电流微弱的特点，提出了一种经过改进的实时谐波消去方法。

A advanced method for real-time harmonics cancellation based on frequency shifting principle is deduced , for the fact that the scope of the fault signal is very faint compared with the circuit of the motor .

分析了样机负载状态下的谐波，并计算了基波电流下的涡流损耗，同时进行了电机温升试验。

The harmonics of the prototype under the sate of load has been analyzed and the eddy current loss on the fundamental current has been calculated . Simultaneously , the motor temperature rising test has been done .

带基波电流旁路通道的串联混合有源电力滤波器为电网电流中的基波成分提供了一个无源通道，因而可以大大降低有源部分的容量。

The series hybrid active power filter with fundamental current bypass channel provides a passive channel for the fundamental component of the grid current . Hence the required rating of the active filter can be greatly reduced .

通过理论推导，发现当电力滤波器中的基波电流和谐波电流的比为定值时，滤波电容的过电压系数和过电流系数是与之相对应的确定值。

After theoretical analysis , it is found that if the ratio of the fundamental harmonic current to the harmonic one is definite in the power filter , then both the overvoltage and overcurrent factors are correspondingly definite .

采用差分与傅氏变换相结合的计算方法，省去模拟滤波电路，从带有衰减直流分量的故障电流中提取基波电流，进行保护计算和判断，具有较高的准确性和可靠性。

It is more accurate and reliable in current protection that basic frequency current is taken from fault current with decaying dc component by use of FFT for difference input data , which eliminates the need of analog wave filter .

该方法能有效地检测出单相电路的谐波电流与基波电流，且不需要采用固定频率的滤波器，不需要锁相环，电路结构简单，易于实现。

The approach can effectively detect the harmonic and reactive currents , and it is no need to adopt the fixed frequency filters and Phase Lock Loo p ( PLL ) in it , and not only its circuit configuration is simple , but also to realize it is easily .

基于UPF基波有功电流检测的DSP实现

Fundamental Active Current Detection Based on UPF and it 's Implementation in DSP

采用550kV，4kA及210ns的环行电子束，经过优化调节RKA参数，使强流调制电子束流脉宽由50ns增加到150ns，同时得到了3.2kA的基波调制电流。

In experiments , a hollow electron beam of 550 kV , 4 kA and 210 ns generates an electron beam with modulated current of 3.2 kA and pulse width of 150 ns after optimization and adjustment of the parameters of cavities .

基波有功电流的检测过程实质是在旋转坐标系下的低通滤波。

The key point of detecting fundamental active currents is low pass filter in rotating coordinate .

谐波及无功电流的检测是通过抽取基波有功电流，然后，从负载电流中减掉基波有功电流来获得。

Both harmonics and reactive currents are obtained with the subtraction of fundamental active currents from load currents .