检测电路采用阻抗—电压变换法，检测涡流探头阻抗变化。
Detection circuit use impedance - voltage transformation method to detect changes in eddy current probe impedance.
在电力系统中，变压器是实现电压变换、电能传输和分配的关键设备。
Transformer is the key instrument for voltage converting, power transmission and distribution in power system.
提出了一种研究DC - DC电压变换器受控制信号控制的新方法。
A new method for investigating DC-DC converters under the control signal was suggested.
介绍了大直流计量装置中的电压变换器检测原理，测量中存在的问题以及改进措施。
This paper introduces the measure principle of voltage convertor in big direct current survey setting, the question existed in survey and how to improve it.
DC/DC电源变换器是能将一种直流电压变换成另外一种或几种直流电压的高效供电装置。
The DC/DC power converter is a high effective source device that can convert the DC voltage from one type to other type or several types.
领先桥臂中点电压变换期间，变压器初级电流基本保持最大值，使得领先桥臂容易实现软开关；
In the midpoint voltage of leading leg transition, its soft switching is easily realized because of the primary current of transformer keeping the maximum.
电力电子变压器(PET)是一种通过电力电子变换实现电力系统电压变换和能量传递的新型变压器。
Power electronic transformer (PET) is a new type of transformer, which realizes voltage transformation and power delivery in the power system through power electronic conversion.
可编程控制器在高于24V的直流电压等级控制回路中应用时需解决输入模块的电压变换和谐波干扰等问题。
In the application of above 24V fort current voltage grade control circuit, Voltage Alternating and resonant wave interference of input model for Programmable Logic Controllers must be resolved.
由于以分 立的形式连接主电流通路和栅极驱动通路，因此可以减小寄生电感的影响，并提高电压变换效率。
Owing to the connection of the main current path and the gate driving path in discrete form, the influence of parasitic inductance can be reduced and voltage conversion efficiency can be improved.
采用电压频率变换和频率电压变换技术处理模拟信号，有效的克服了光电耦合器的非线性，实现了模拟信号的线性光电隔离。
Analog signal linear photo-isolation is carried out by using voltage-frequency conversion and frequency-voltage conversion technique so as to effectively overcome nonlinearity of the photocoupler.
采用德国西门子IGBT变频，电压反馈串联谐振电路。变换效率高达97.5%以上。
Adopt IGBT frequency conversion of German Siemens and voltage feedback series resonance circuit. The conversion efficiency is reaching up to above 97.5%.
本节详细介绍如何使用这些测试夹具来进行表面电阻率和体电阻率的测量，以及测量电阻率时使用的变换极性和变换电压的技术。
This section details how to make surface and volume resistivity measurements with these test fixtures, as well as the Alternating Polarity and Alternating Voltage techniques for measuring resistivity.
实验结果表明，用这种方法所研制的电动汽车DC DC变换器输出电压精度高，抗干扰能力强，调节特性快速、平稳。
Experiments show that the designed DC DC convertor's output voltage precision is high, the antijamming ability is strong and the adjustable performance is fast and smooth.
介绍一种旨在提高信号传输可靠性而设计的信号转换电路，它将电压信号变换成电流信号进行传输。
This paper introduces signal switchover circuit that transforms voltage signal to current signal in order to improve signal reliability.
电力变压器是电力系统中用来变换电压的重要电气设备，提高电力变压器运行可靠性是极为重要的。
Power transformer is the important electrical equipment used to transform voltage in the power system, so it is very important to improve the operation reliability of power transformer.
用精密分流器将电流变换成电压以实现电流测量功能。
Precision shunts are used to convert currents to voltages for the amps functions.
通过对这种变换器的工作原理分析可知，主辅开关管都可以实现零电压或零电流开关，且电压、电流应力较小。
Through the operational principle it can be verified that all the switches are capable of achieving ZVS or ZCS condition, and the voltage and current stress are relatively low.
模拟信号须转换成适合于变换到数字形式的电压信号。
The analog signals must be converted to voltage signals suitable for conversion to digital form.
借鉴电流控制电压型变换器的研究成果，将电流控制的概念引入矩阵变换器。
Referred to the achievement of current controlled voltage source converter, the idea of current control is introduced into MC.
变压器主要用于电能的传输、分配和电压的变换，是电气运行中的重要设备之一。
The transformer is mainly used for power transmission and distribution and voltage transformation, is one of the important equipment of electrical operation.
尤其适合以igbt作为主功率开关管的高电压、大功率功率变换，具有广泛的应用前景和巨大的经济价值。
So this novel converter has a wide application and huge economy effect in power converting field, especially in the high voltage and high power feild where IGBT is used as the main switch.
变换器1被控制为一个基波正弦电流源，变换器2被控制为一个可控电压源。
The converter 1 is controlled as a fundamental sinusoidal current source, and the converter 2 is controlled as a voltage source.
和600伏特设计比较，800伏特准谐振反激变换器的电压频谱在1兆赫兹以下更高一点，在1兆赫兹以上开始变小。
As it can be seen the voltage spectrum of the 800v quasi resonant flyback is higher at frequencies below 1 MHz, and is getting lower above 1 MHz compared to both 600v designs.
电感电流断续工作的反激式变换器一次侧开关可工作于硬开关或准谐振(或谷值开关或零电压开关)模式。
The flyback converter running in discontinuous conduction mode can be operated in hard switching or quasi resonant (or valley switching, or ZVS) mode regarding the primary side switch.
提出了一种基于双端电压暂态信号小波变换的高压输电线路快速保护算法。
A new high speed protection criterion for high voltage transmission line based on the wavelet transform of transient voltage signals from the two ends of the line is presented.
新加入的是直流路网中用斩波器和中间电路电压可调的功率变换装置。
Major innovation is the power conversion with chopper and controlled converter DC-link in direct current networks.
利用电压源与电流源之间的等效变换求解某一支路电压、电流，是电工基础理论中非常方便的方法。
In the electrotechnics basis theory, it's very convenient to solve one branch's voltage and current by the equivalent transformation between the voltage source and current source.
大功率直接变频电路的基本功能是实现频率和电压的直接变换，被应用于航空电源和调速电源中。
The large power AC-AC frequency-changers are used in the aircraft power source and AC speed-regulation systems to convert frequency and voltage directly.
介绍提高我国弧焊逆变电源可靠性的途径以及零电压、零电流软开关变换研究现状。
Ways to improve the reliability of arc welding inverter power and the research condition of zero voltage, zero current soft switch inverter are introduced.
讨论了对含谐波的正弦电压(电流)采样值直接进行小波变换计算基波、谐波电压(电流)的有效值及频率的方法。
It's discussed that the method of RMS and frequency measurements directly from the wavelet transform data associated with each sampling sine voltage (current) element pair containing harmonic.
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