电压相位

采用的预测电流数字控制器实现了输入电流的闭环控制，三相输入电流能跟踪输入电压相位，三相电压型PWM整流器实现了高功率因数。

The predictive current control helps greatly to voltage regulation with the input current keeping in phase with input voltage .

本文介绍了基本的PWM调制技术与电压相位检测技术，为后续控制策略的展开打下了基础。

The basic PWM technology and voltage phase detection technology were introduced , which is the base of the control strategy .

设计了IPC自适应模糊控制器，选择联络线两端电压相位差与联络线功率作为控制信号，对增益系数进行自适应模糊调节。

An adaptive fuzzy controller is designed , which selects the power and the phase difference of both ends of tie-link as control signals and deals with the gain coefficient in adaptive fuzzy regulation .

并网仿真采用两级式逆变系统，将MPPT集成到DC/DCboost环节，，第二级DC/AC环节使并网电流跟踪电网电压相位，并以此模型为基础讨论光伏发电并网对电网的影响。

Grid-connected simulation uses the two-stage inverter system , integrate the MPPT to the DC / DC boost stage , the second stage of DC / AC make the grid-connected current track the grid voltage phase .

智能型25Hz相敏轨道电路电压相位测试仪

Intelligent Measurer to 25 Hz Phase Track Circuit

提出一种以串联谐振并联输出进行DC-AC功率变换，以控制两个逆变器谐振电压相位差来调节输出电压的逆变器结构；

This paper presents the inverter , whose DC-AC is converted by series resonant parallel output , and the output-voltage is regulated by controlling the phase difference between voltage of two inverters .

UPFC的辅助控制则通过联络线的功率反馈或电压相位差反馈对主控制中的控制参考值进行调制，以增加系统阻尼。

To improve the system damping , the supplementary control of UPFC is proposed , with its input as the active power or the bus voltage angle difference of the tie line , and its output as the modulation signal to the main control .

建立了110kV交联聚乙烯（XLPE）绝缘电力电缆皱纹铝护套松动时的放电模型，并利用时域有限元电场的方法分析了110kV的电缆耐压试验时，在电压相位过零点时的放电现象。

A partial discharge model was built for an 110 kV XLPE power cable with loose corrugated aluminium sheath . The discharge when the phase is at zero at a voltage test of 10 kV cable was analysed using the time-domain finite element method .

比较工作电压相位法在距离保护中的应用研究

Application research on method of working voltage phase comparison in distance protection

发电机三相电压相位差的数字测量

Digital Measurement of Generator Three - phase Voltage Phase Difference

三相交流电压相位同步检测电路

Circuit design for 3 - phase AC voltage phase measurement

同时传统的焊接逆变电源均为二极管整流、大电容滤波，从而造成输入电流和电压相位相差很大，并且电流畸变很大。

Conventional input current of Arc-welding is rectified by diodes , and smoothed by big capacitors .

负载时电压相位调整器

On load voltage and phase regulator

而且晶闸管的触发不再依赖电压相位信息，提高了抗谐波干扰能力。

Triggering of thyristor is no longer depending on the voltage phase information , and the robustness of performance is improved .

通过引入输出电压相位反馈控制，能够实现输出相位对指令相位的跟踪。

The output phase is able to track the instruction phase by introducing a feedback control of the output voltage phase .

利用相关函数概念，针对电压相位检测问题提出了一种新的算法。

A new algorithm is proposed that using of Correlation function to detect the phase of sinusioidal voltage output from the inverter .

本实用新型提供一种交流稳压调压器，综合利用了交流电压相位控制法和幅值控制法。

The utility model provides an AC voltage stabilizing regulator , which synthetically utilizes the AC voltage phase control method and the amplitude control method .

通过参数设定、输入电压相位计算、控制算法实现和开关接口等环节设计，实现了输入电流偏置角动态调整的控制策略。

In order to study the strategy of input current modulation , the simulation model of matrix converter under unbalanced input is built with MATLAB .

为解决因时间常数过大导致计算时间过长的问题，讨论了不同的激励电压相位对计算效率的影响。

The influence on computational efficiency from different phases of excitation voltage was discussed in order to reduce overlong computation time resulted from large time constant value .

本文着重研究了因近场感应电压相位差引起的耦合误差，以及近场天线差斜率变化引起的定向灵敏度的变化；

This paper mainly studies the coupling error caused by induction voltage phase difference , and fluctuation of directional sensitivity caused by changes in near-field difference slope .

本文应用晶体管电流关系式，推导三种组态放大电路的电压相位关系和判断反馈电路极性。

This paper , based on the formula of transistor electric current deals with three kinds of appearances enlarge electric circuit 's mutual relation and the feedback electric circuit pole .

依据输出有功功率差和无功功率差分别调节输出电压相位和幅值的控制技术较多地应用在逆变器并联控制中。

The control strategy that regulates the phase and the amplitude of the output voltage according to output active power difference and reactive power difference respectively is adopted generally in inverter parallel techniques .

针对逆变电源输出正弦电压相位检测问题提出了一种新颖的算法，使高精度逆变控制易于实现。

A new algorithm is proposed to detect the phase of sinusoidal voltage output from the inverted power supply so as to make the high-precision control of power supply inversion easy to implement .

其中，直流微电网是一种使用直流配电方式的微电网，它不需要控制电压相位和频率，具有可靠性高、转换效率高和线路损耗少等优点。

DC micro-grid is a system using DC distribution , which has the advantages of high reliability , high efficiency and low line loss , with no need for controlling voltage amplitude and phase .

分析了晶闸管充电机不同接线时的电压相位特性和晶闸管整流电路的移相特性，画出了电压相量图。

It is analyzed that voltage phase characteristics when the thyristor charger is wried in different ways and the phase shift characteristic of the thyristor rectification circuit . The voltage phasor diagram is drawed .

分析表明，正相序接线，而且电流按照与电压相位相对应接入，则不影响电能计量表的计量准确率。

By analysis , it is clarified that the accuracy of the electric meter isn 't affected when the connection is on positve phase sequence and the connection of electric current corresponds with voltage phase sequence .

介绍了用光耦器件与二极管构成的三相交流电压相位同步检测电路，它可替代笨重的变压器式检测相位方式，提高检测精度和稳定性，拓宽了同步范围，并实现了低成本、低能耗。

: It is introduced the 3 - phase AC voltage phase measuring circuit used by op component and diode . It can take place of the measuring mode with transformer , improve the accuracy and stability .

另外，还对并机系统造成危害的环流产生原因进行了分析，得到逆变器输出电压相位和幅值差异导致了有功环流和无功环流的产生。

In addition , analyzed the reason what induces circulating current which influences parallel operation system , found that difference between any parallel operation inverter output voltage amplitude and phase results in reactive power circulating current and active power circulating current .

在单机的基础上，介绍了逆变器并联的环流特性，以及基于有功和无功功率的并联控制方案，包括：基准电压相位和幅值的调整，有功和无功功率计算，逆变输出电压同步锁相。

Above the single inverter mentioned before , the character of circulating current in parallel inverter is provided . And the control method base on active and reactive power is introduced including the reference voltage phase and amplitude adjusts , power calculation and output voltage synchronized in different inverter .

该方法通过PI闭环控制可以纠正锁相环检测到的A相电压的相位，使其趋于A相基波正序电压的相位。

The method produced can rectify the phase A voltage detected by PLL through PI closed loop control .