查询词典 rectifier

Bi-directional power flow is realized when this rectifier is used at the commutating side of an in-verter.

1引言目前，对三相AC/DCPWM变流器的控制有直接电流控制和间接电流控制两种方法[1，2]。

This structure applies non-controlled rectifier, boost chopper and SPWM inverter chopper to convert the electric energy dynamited by electrical machine into alternating current which can be accessed to the constant frequency and voltage of electricity grid.

详细介绍了直驱型风力风电系统的组成结构及其变流系统的控制原理，给出了一种在考虑现有开关器件功率水平的情况下符合大功率直驱并网型风力发电机组要求的变流电路拓扑结构，并给出了相应的主要部分的具体应用电路。

The result shows that new method can control the input current well sinusoidal, decreases harmonics components, keeps the DC voltage flatted, and provides fairly good fault ride-through capability for the PWM rectifier

结果表明，新的控制方法能使PWM整流器在故障电网下的输入电流正弦，抑制了谐波功率的产生，保证了直流电压的稳定，增强了PWM整流器故障不间断运行的能力。

Of Hunan Province, invaliding analyses and countermeasure study for deep-drawing thermal forming of Ti-alloy thin plate have been done in this paper, the main fruits have been achieved as follows:Firstly, in order to provide parameters of material properties for the numerical simulation "experiments" of one rectifier internal hood deep-drawing thermal forming, the standard samples of TC1 Ti-alloy thin plate of thickness were made, the tensile tests under different temperatures and forming velocities have been done, the effects of them on the material's properties have been inquired out.

首先，将厚的TC1钛合金薄板制成板料标准试件，在不同温度和不同拉伸速度下进行拉伸实验，探讨温度和成形速度对材料性能的影响，为采用同一材料进行整流内罩的深拉热成形的数值模拟&实验&提供材料性能参数。

In this paper,the small signal modeling of the electric rectifier based on limited double poled control scheme is presented,and the control loop circuit is designed.

1引言高频开关电源具有体积小、重量轻、效率高、输出纹波小、动态响应快、控制精度高等特点，广泛应用在大型发电厂、变电站等场合。

With Ammonia as refrigerant and water as absorbent, they are boiled by the heater in the generator, as a result, the Ammonia-water solution is evaporated. The Ammonia vapor is purified by the rectifier and is condensed into liquid Ammonia in condenser. The liquid Ammonia and the pure Helium purified in the absorber are evaporated together in the evaporator and to absorb heat thus refrigerate at the same time.

采用氨为制冷剂，水为吸收剂，通过对制冷机芯的发生器加热，使氨水溶液中的氨蒸发，氨蒸汽经精馏器提纯后进入冷凝器成液氨，液氨在蒸发器中与经吸收器提纯的纯氦共同蒸发，同时从外部吸收热量，达到制冷的目的。

I plant the production of welding equipment and cutting equipment SCR rectifier arc welder, SCR DC argon arc welding machine, AC arc welder, air plasma cutting machine and carbon dioxide gas shielded welder six series, more than 20 varieties.

我厂生产的焊接设备和切割设备可控硅整流弧焊机、可控硅直流氩弧焊机、交流弧焊机、空气等离子切割机和二氧化碳气体保护焊机等六大系列，二十多个品种。

In this paper, it bas been studied by the slope-controlled SCR rectifier that external characteristic of welder relate to arc digging action and the strong arc force of arc the strong arc force of arc welding power source in manual arc welding formed.

利用一种特制的变结构可控硅整流焊机，研究不同焊机外特性对电弧穿透力的影响；探讨了手工电弧焊强电弧力形成机理；并且指出正确设计电源外特性，是获得较强电弧穿透力的途径。

B DC high voltage power supply circuit short circuit, high voltage filter capacitor should check whether the breakdown leakage current, filament transformers for filament winding of whether the earth leakage, tube bracket fixed capacitor (high-frequency coupling capacitor) whether the breakdown leakage, rectifier diodes have breakdown short-circuit phenomenon

b 直流高压供电回路短路，应检查高压滤波电容是否击穿漏电、灯丝变压器的灯丝绕组是否对地漏电、电子管支架固定电容是否击穿漏电、整流二极管是否有击穿短路现象

The battery tester from isolation circuit, boost rectifier circuits, display circuit, the test circuit composed of four main components.

摘要该蓄电池性能测试仪由隔离电路、升压整流电路、显示电路、测试电路四个主要环节组成。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。