The adopted control mode of previous common frequency converter is usually of open loop constant voltage ratio which its control curve is not stable .

早期通用变频器大多为开环 恒压 比的控制方式，控制曲线不稳定。

Based on the method using single-phase voltage source the configuration and electromagnetism of the three kinds of transformer mentioned above are analysed and their testing models of the voltage ratio are discussed and presented respectively .

基于以上目的，本论文根据单相电源法原理，在分别分析了三种特殊接线方式变压器的结构和电磁关系上，针对不同的变压器，建立了变压器 变压 比测试数学模型。

Measuring voltage ratio of varistor by integral comparison divider

积分比较式除法器在压敏电阻 压 比测量中的应用

10 ~ 500 / 3 ~ ( 1 / 2 ) kV Power Frequency Voltage Ratio Standard Apparatus

10～500/3~（1/2）kV工频 电压 比例标准装置

Analysis of the Influence of Voltage Ratio and Geometry on the Performance of Different Axial-Symmetrical Electrostatic Lens

电位 比及几何尺寸对各类轴对称静电透镜性能影响的分析

Study on the System Used for Voltage Ratio Measurement of Special Transformer

特殊接线方式变压器 变压 比测试的研究

Chip Multilayer ZnO Varistors : Effect of Termination Firing Process on Clamping Voltage Ratio

片式ZnO压敏电阻烧端工艺对限制 电压 比的影响

The Principle of a new precise DC voltage transformer and its error analysis are related . On the principle a instrument has been developed ( voltage ratio 100 / 5V accuracy : ± 0.06 % ) .

叙述了仪器的原理及其误差分析，及以此原理研制的一台 变比为100/5V，准确度为0.06%的直流电压互感器。

This text introduce a verified method of direct current high voltage supply source making use of digit multimeter and voltage ratio standard in high voltage and high resistance measure instrument .

本文介绍一种利用高压高阻测量仪的 电压 比率标准与数字多用表测量直流高压电源的校准方法。

A Method for Measuring Transformer Voltage Ratio of Zigzag Connection Windings

一种测量曲折形联结绕组的变压器 电压 比的方法

The effect of temperature for terminal electrode firing and soak time on the clamping voltage ratio was investigated .

通过对烧端工艺中不同烧端温度以及保温时间的试验，研究了它们对片式ZnO压敏电阻器限制 电压 比的影响。

The Low Frequency Parasitic Oscillation and Voltage Ratio of Series-Parallel Connected Inverters

串并联变频电路的低频寄生振荡与 升压 比

Based on WAN the qualified voltage ratio data can be reported to leaders examined and rejected to achieve system data-integration .

本系统基于广域网设计，支持 电压合格 率数据的无限级上报、审批、回退，实现了广域网上数据的合并与汇总。

Selection of Voltage Ratio & Taps of Main Transformer in Hanzhong Substation

汉中变电站主变压器 电压 比及分接头的选择

The voltage ratio is derived and the system closed-loop control is realized with PI regulator .

从理论上推导了 电压 传输 比，采用PI调节器实现了系统的闭环控制。

Study on Testing Method for Voltage Ratio of Transformer with Special Winding Mode

特种变压器 变压 比测试方法的研究

The result shows optimized setting density be 80 pieces per saggar which obtained high electrical gradient low voltage ratio and reduced energy consume by nearly one fourth and annual cost for electricity by 200 thousand yuan .

结果表明，80片的装钵量最合理，不仅提高了电阻片的电位梯度，降低了 压 比，而且单片能耗 比以前节省了近1/4，年节省电费20余万元。

ATP simulation and MATLAB calculation show that the voltage ratio protection against inter-turn fault of reactor can make correct judgement to this kind of fault quickly .

基于ATP的仿真和Matlab的运算表明基于电容器电感器 电压 比的电抗器匝间短路保护，能够对匝间故障做出快速而正确的判断。

A transformer whose voltage ratio of transformation can be adjusted .

电压 比率能够调整的变压器。

In the voltage ratio circuit design the principle of two voltage meter method is adopted a high precision A / D transformer is used and a microcomputer is employed to measure voltage and calculate the voltage ratio values .

该装置采用单片机进行数据处理与控制， 变比 测量电路设计采用双电压表法的原理，利用高精度A/D转换器进行模-数转换，通过微机测量电压，并计算变比值；

The hardware and software of the testing apparatus of the voltage ratio based on the models and the multi-function platform for transformer testing are introduced .

并介绍了基于多功能变压器测试平台的 变压 比测试仪硬件和软件模块。

The contents include calculation for parallel connection inductance LP and the primary capacitance of main transformer no-load voltage ratio and maximum duty ratio of the transformer .

其内容包括并联电感Lp及变压器初级电容Cp的计算、变压器 变比及其最大占空比的确定。

On Technology to Test the Voltage Ratio of Transformers

变压器 电压 比试验技术探讨

Together with the particularity of power traction system in electrified railway a new protection against inter-turn fault based on the voltage ratio is proposed .

结合电气化铁路供电系统的特殊性，提出并补装置串联电抗器的基于容抗 电压 比的新匝间短路保护。

In testing values of admission the method of voltage ratio and also the method of magnitude of voltage .

检测进气量多半采用 电压 比法，也有的采用电压值法。

The voltage ratio of the capacitor and reactor will change when the fault occurs .

电抗器匝间故障时，电容器与电抗器 电压 比将发生变化；

Thus the usage of full-bridge cascaded converter with equal voltage ratio can save a number of switching devices and separated powers simplify the circuit and cut down the cost .

因此，采用复合型等 电压 比全桥单元级联型变换器可节省大量的开关器件和独立的电压 源，从而简化了电路，降低了成本。

The authors analyze the hybrid full-bridge cascaded inverter with equal voltage ratio and give a generalized modulation method .

分析了复合型等 电压 比全桥单元级联型变换器，总结出一般的设计方法。

Basic principle of the proposed converter is analyzed in detail together with its critical conditions voltage ratio and stress of devices in the converter .

详细分析了这类变换器的工作原理、临界条件、 输入 输出 电压 变比以及各器件的应力。

It can be proved that the voltage ratio transfer function is easily obtained from the reciprocal of numerator polynomials of the rational fraction of the input impedance while its denominator reciprocal forms transfer function of transfer impedance .

输入阻抗函数之有理分式其分子多项式的倒数就是 电压传递函数，其分母多项式的倒数就是转移阻抗函数。由连分 弍到有理分式的变换过程称之为反演，反之称为展开。