And the amplitude is controlled by this method. Thirdly, this paper adopted the digital phase lock technique based on asynchronous varying-Frequency modulation algorithm to control the phase and frequency of the refrence current, and the power factor of the grid-connected inverter.
3针对并网参考电流相频的控制，采用基于异步变频调制的数字锁相算法，实现并网逆变器的并网电流对电网电压的频率和相位的跟踪，从而实现了对并网逆变器功率因数的控制。
Four conventional algorithms for current RMS, amplitude error and phase error were discussed, and FFT algorithm was selected from them and realized in LabVIEW language.
研究了计量与参考通道的电流有效值以及二者的比差和相差的四种常用算法，从中选择了FFT算法并用LabVIEW语言实现。
Working out the qusi-difference equation of the air-water turbulent two fluid flow, and building the discrete equation series by current difference equation, which is adapted to one-phase flow, multi-phase flow and chemical reaction, etc.
建立了不可压缩等温条件下的，一般形式的水气两相湍流的数学模型，并采用通用微分方程形式，建立了适合单相流，多相流，带化学反应流动的通用离散化方程组，并建立了加快收敛速度的SIMPE—IEM方法。
In the AC servo control system, using digital low-pass filter can restrain current feedback noise and improve the resolving power of speed feedback, but it may lead to phase lag of feedback signal and directly influence the response speed.
交流伺服控制中采用数字低通滤波可以抑制电流反馈噪声，提高速度反馈分辨率，但同时会带来反馈信号的相位滞后，将直接影响响应速度。
Methods are as follows: using of generators and adjacent to the neutral point zero sequence voltage, machine-zero-sequence current component consumption as a reference, current transformer and voltage transformer wiring form of a standard wiring; under generator-and-neutral fault component adjacent to the third harmonic voltage and phase angle at the same small impose a certain value to determine from the neutral point 50 percent of the internal generator stator single-phase ground fault; under generator terminal voltage and zero-sequence - current weight-zero sequence of phase angle relationship to determine from the neutral 50%-100% within the scope of the internal generator stator whether single-phase fault.
方法如下：采集发电机机端和中性点侧的零序电压、机端零序电流分量作为参考电量，电压互感器和电流互感器接线形式采用标准接线；根据发电机机端和中性点侧的故障分量三次谐波电压的相角相同并同时小于某一定值来判别距中性点50％范围内发电机定子是否发生内部单相接地故障；根据发电机机端零序电压和机端零序电流分量的相角关系来判别距中性点50％-100％范围以内的发电机定子是否发生内部单相接地故障。
These TFTs are better than their solid phase crystallized counterparts in many process and device performance measures, such as shorter and simpler process flow, higher field effect mobility, reduced leakage current, better immunity to early drain breakdown and much improved spatial uniformity of device parameters.
低温金属单向诱导横向晶化多晶硅薄膜晶体管技术与常规的固相晶化多晶硅薄膜晶体管相比，制作工艺简单，而且提高了场效应迁移率和漏极击穿电压，降低了漏电电流，改进了器件参数空间分布的均匀性。
But there is a definite phase transition from current technologies.
但有一个明确的过渡阶段，从目前的技术。
And it had the function of self-reacting the phase-sequence of three-phase alternating-current, and soft startup. And it could resist startup surge current, And eliminate the impulse of the electric network and equipments.
自动适应三相交流相序，软起动功能，抗起动浪涌电流，消除对电网的污染，对设备的冲击。
By means of phase-modulus transform of abrupt-changed voltage and current, the modulus maximum is solved by dyadic wavelet transform; by use of points corresponding to modulus maximums at both sides, the moments, when traveling waves arrive the buses, can be determined. By means of comparing the polarity, the reflected waves coming from faulty point and adjacent bus respectively can be well recognized; the ratio of fault distance to full length of transmission line can be calculated by the ratio of the times when initial traveling wave arrives buses at two terminals to the times when traveling wave reflected by faulty point arrives buses at two terminals; finally, by use of locating by tower, the faulty point is determined.
通过对电压、电流突变量进行相模变换，采用二进小波变换求出模极大值；利用两侧的模极大值对应点确定行波到达母线的时刻，并且采用极性对照法很好地解决了故障点和相邻母线反射波的识别问题，用初始行波与故障点反射行波到达两端母线的时间之比计算故障距离与线路全长之比；最后采用杆塔定位的方法确定故障点位置。
In this paper, the time series of pressure fluctuation of multi-phase co-current flow was measured and investigated by a new mathematical tool -deterministic chaos theory.
本文利用混沌理论这一新的数学工具来研究多相并流体系的动力学特征，从一个新的视角考察多相流动的复杂动力学行为。
As an example, the proposed method is used for the detection of positive and negative sequence current for an unbalanced three phase power system.
基于瞬时对称分量理论，提出了一种新型的正、负序电流检测方法，并用PSCAD／EMTDC仿真软件进行了验证，结果表明所提方法是正确、可行的。
With rapid computation speed, the method is suitable for the application of practical engineering. As an example, the proposed method is used for the detection of positive and negative sequence current for an unbalanced three phase power system. The simulation results verify the correctness of the proposed method.
基于瞬时对称分量理论，提出了一种新型的正、负序电流检测方法，并用PSCAD/EMTDC仿真软件进行了验证，结果表明所提方法是正确、可行的。
RC phase-shift circuit current mainly by the capacitor voltage is 90 degrees ahead of this feature.
RC移相电路主要是由电容器的电流超前电压90度这一特性。
Influence of skin effect and proximity effect must be considered both for phase line and neutral line if total harmonic distortion of current is obvious and the cross section of conductor is big.
不管是相线还是中性线，只要谐波电流的畸变率大，导线截面积大，集肤效应和邻近效应的影响就必须考虑。
Finally, the paper summarizes the main work, described the issue as to the purpose, According to the current design problems encountered during the course of the next phase of the work and direction of the paper.
最后，总结了本文的主要工作，叙述了本课题所要达到的目的，根据此次设计过程中遇到问题，对下一步的研究工作和方向进行了展望。
Now that the current 3-phase separators have many defects, by means of the study of gas-liquid`s kinematic relation in cyclone separation and the study of oil/water separation in gravity settling separation, a new kind of high efficient dehydrating equipment-- high efficient separator has been developed successfully.
针对目前三相分离器存在的不足，通过对旋流分离中气液运动规律和重力沉降中油水分离规律的研究，研制成功了一种新型高效脱水设备—高效分离器。
When the mobile phase composition on the current step is optimized, the overlapping separation range map for solutes eluted in next one or two steps is replotted simultaneously by considering the influence of elution conditions for current step on the retention of uneluted solutes.
在对当前台阶流动相组成进行优化的同时，考虑其对后面一到两个台阶上流出组分保留的影响，实时地重新绘制对于后面台阶上流出组分的重叠分离区域图。
The compensation current of the arc-suppressing coil makes the phase and amplitude of the zero-sequence measurement current of the earthed fault feeder to vary, and increases difficulty of the detecting single-phase-to-ground fault feeder.
其中前两种中性点接地方式的故障馈线的零序测量电流是非故障馈线的零序测量电流的总和，但方向相反，对此有多种基于单相接地故障工频稳态量分析的小电流接地选线方法。
Such as the CBD is located at the edge of the East Fourth Ring Bridge慈云寺live bang 2000 Business Center, which from the CBD core area of approximately 1000 meters, the current price of the second phase around 10, 000 won, however.
如生物多样性公约位于边缘的东四环慈云寺桥住邦2000商务中心，从生物多样性公约核心面积约1000米，目前的价格在第二阶段大约10，000韩元，但是。
When a rotating voltage vector is injected to the motor at standstill, there is a microinching when the voltage phase is line to the direct axis of the motor. Then the current will decrease due to the back electromotive force. The initial mover position is identified by this change.
电压相位和电机直轴重合时，产生的电磁推力超过负载阻力，电机有一微动，由于反电势的作用电流就会降低，通过检测电流矢量的变化来估计动子的初始位置。