查询词典 current converter

This thesis discusses principal issues of the matrix converter such as prime principle, control strategy, current commutation, parameter selection and its applications etc.

本文研究的目的是对矩阵变换器基本原理、控制策略、开关换流、参数选择、应用范围等基本问题进行了探索性研究工作。

First,apply PLC regulate to speed to alternate current motive, the system adopted PANASONIC PLC, series of FP∑as core,control small-scale model VF0 frequency converter PWM fan-out of pulse,and control AC motion control system's speed , use the rotatory encoder of Omron formed the speed reactive circuit.

可编程控制器是一种数字运算操作的电子系统，专为在工业环境下应用而设计，它采用可编程存储器，用于其内部存储程序，执行逻辑运算，顺序控制，定时，计数与算数操作等面向用户的指令，并通过数字或模拟式输入/输出控制各种类型的机械或生产过程。

This invention relates to a window A/D converter used in digital supply controllers composed of a PMOS difference input pair, a CTAT offset current generation circuit, two loop oscillators and a digital part including two n-bit counters, one n-bit comparator, one n-bit subtracter and an n-bit D trigger, in which.

本发明属集成电路技术领域，具体为一种适用于数字电源控制器的窗口式模数转换器。它由一个PMOS差分输入对、一个CTAT偏置电流产生电路、两个环路振荡器和数字部分组成。数字部分由两个n位计数器、一个n位比较器、一个n位减法器、一个n位D触发器组成。

Electron beam bombarding furnace ; High-voltage PWM converter ; Tetrode ; Harmonic current ; High-voltage filter circuit

电子束轰击炉；高压PWM ；四极管；谐波电流；高压滤波电路

According to the control features of the converter tilting system and the current control the problems.

根据转炉倾动机构负载的控制特点，以及目前控制方式存在的问题提出了改进的方法。

An effective method for improvement transient response in pulse-width modulation current source converter is studied.

给出了单相和三相变频器的实验结果，与采用其他方法的变频器相比，该方法的变频器电源电流的暂态响应得到了有效改善。

Compared with the previous circuit, the current of the main switch is decreased and the converter losses are reduced because of the soft-switch; adjusting the turns ratio of the auxiliary winding can decrease the voltage of the rectifier.

应用于推挽正激电路[6，7]的软开关电路拓扑通常是考虑在其整流桥之后增加一个辅助谐振网络，利用谐振电容上的电压来封锁整流桥，从而达到零电流关断主管的目的。

The operation condition of a series-resonant converter is equivalently analyzed under open-loop condition. OCC condition and selection basis of resonant parameter and switching frequency are determined. The relationships between LED number, transformer turns ratio and constant current error are also determined, which provide scientific basis for the selection of LED number and transformer turns ratio.

文中通过对串联谐振变换器开环工作状态的等效分析，确定开环恒流条件和谐振参数与开关频率的选择依据，以及LED数目、变压器变比与恒流误差之间的关系，为LED数目及变压器变比的优化选择奠定了理论基础。

This text introduce a sort of new pattern soft switch PFC circuit .First, analyze the develop course of the on-off power supply. Second, relate the harm of humorous wave to the commonality electricity net. Third, present the topology and the principium chart of the soft switch PFC and analyze it .At last ,set the parameter and simulates the converter of with matlab simulation. more over ,get the hold of well voltage and current wave , minish the spoilage of the circuit, enhance the efficience of the circuit, meet the demand of the miniaturization and viridity.

本文引入了一种新型的软开关PFC电路，首先分析了开关电源的发展历程，然后讲了谐波给公共电网造成的危害，再给出了这种软开关PFC的电路拓扑及原理图并对其工作原理进行了分析，最后对其参数进行设置在MATLAB软件进行了仿真，并得到了良好的电压电流波形，而且减小了电路的损耗，提高了电路的效率，实现了小型化，绿色化的要求。

This converter array can reach high current and high voltage rating simultaneously, it suits the application of high power SMES.

电流型变流器阵列可同时得到大电流和高电压，适合应用于大容量超导储能系统。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。