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power electric     
相关语句
  电力
     Developing and research of MIS of power electric labor union based on B/S and C/S
     基于C/S和B/S的电力工会管理信息系统开发研究
短句来源
     Experience and Lesson of 200kW Welded Pipe HF Power Electric Equipment
     200kW焊管高频电力电子设备改造教训与经验
短句来源
     As consequence, IGCT is an ideal high power electric semiconductor device and has been used in power range 0.5~100 MVA control installations at high voltage levels 2.3 kV,3.3 kV,4.16 kV and 6.9 kV.
     目前已用于电压等级为2-3kV、3-3kV、4-16kV、6-9kV,功率范围为0-5~100 MVA 的装置中。 它是一种理想的大功率电力半导体器件。
短句来源
     With the development and popularization of Power Electric Technology and Automation Technology, there is incessant new breakthrough in the research field of APF (Active Power Filter).
     随着电力电子技术和自动化技术的推广,有源电力滤波器(Active Power Filter,APF)的研究不断取得新的突破。
短句来源
     This paper mainly study on the Shunt Active Power Filter based on PEBB. Active power filter (APF) is a kind of power electric equipment for dynamic harmonics suppression and reactive power compensation.
     本文主要研究基于PEBB(Power Electronic Building Block)的并联有源电力滤波器。 有源电力滤波器APF(Active Power Filter)是一种用于动态抑制谐波、补偿无功的新型电力电子装置。
短句来源
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  电力电子
     This paper mainly study on the Shunt Active Power Filter based on PEBB. Active power filter (APF) is a kind of power electric equipment for dynamic harmonics suppression and reactive power compensation.
     本文主要研究基于PEBB(Power Electronic Building Block)的并联有源电力滤波器。 有源电力滤波器APF(Active Power Filter)是一种用于动态抑制谐波、补偿无功的新型电力电子装置。
短句来源
     With the development of microcomputer control technology and Power Electric device, the AC motor variable frequency speed regulation technology also receive considerable progress, and plays an extremely important role in the production and life.
     随着微机控制技术及电力电子器件的不断发展,交流电动机变频调速技术也得到了长足的进步,并在生产生活中起着极其重要的作用。
短句来源
     The drive circuit consists of SCALE integrated drive module 2SD315A, which has functions of driving, protection and insulation. It is a prospective power electric drive circuit with merits of multifunction, simple design and high reliability and stability.
     该驱动电路由瑞士SCALE集成驱动器件2SD315A构成,集驱动、保护、隔离功能为一体,功能强大、设计简单、稳定可靠,是一种很有应用前景的电力电子驱动电路。
短句来源
     next, we chiefly designed three-phase thyristor controllable DC power, which was abroad applied in high-power Industry-control field, the core control tache- trigger and adjustor is the research hotspot of power electric field.
     重点对广泛应用于大功率工业控制领域的三相晶闸管可控直流电源进行设计,其中的核心控制环节触发器和调节器的设计是电力电子领域的研究热点。
短句来源
     The paper mainly studies special application of IR2110 bootstrap integrated drive circuit in some common power electric converters possessing different topological structure,the selection method of bootstrap capactor and usage know how of IR2110 circuit in engineering application are introduced.
     针对自举式IR2 110集成驱动电路 ,对其常见的几种不同拓扑结构电力电子变换器中的特殊应用进行了研究 ,介绍了自举电容的选择方法 ,总结了几点应用技巧。
短句来源
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  功率电力
     The Design of Constant Power Electric Drive System of Induction Motor
     异步电机恒功率电力拖动系统的设计
短句来源
     As consequence, IGCT is an ideal high power electric semiconductor device and has been used in power range 0.5~100 MVA control installations at high voltage levels 2.3 kV,3.3 kV,4.16 kV and 6.9 kV.
     目前已用于电压等级为2-3kV、3-3kV、4-16kV、6-9kV,功率范围为0-5~100 MVA 的装置中。 它是一种理想的大功率电力半导体器件。
短句来源
     In view of the tractive gear of single side spur gear drive for high power electric locomotive, a method is proposed to calculate and design the axial helical crowning, end relief, tip/root relief.
     提出了单侧直齿传动大功率电力机车牵引齿轮的齿向螺旋形鼓形修正、齿端修薄和齿顶、齿根修缘的计算以及设计方法。
短句来源
     With such an approach, a tractive gear has been successfully developed for SS 7 electric locomotive, which marks the ending of double side helical gear drive for high power electric locomotive in china.
     运用该方法成功地研制了SS7型电力机车的牵引齿轮,结束了我国大功率电力机车采用双侧斜齿轮传动的历史
短句来源
  功率电
     Large Power Electric Method Approach to Metal Deposit Prospecting
     大功率电法在金属矿勘查中的应用效果
短句来源
     Metallogenic geological conditions are analysed through large power electric method,The position of ore body aredetermined with the help of factors combined with electrical sounding it has achiceved better results.
     通过大功率电法面积工作确定成矿地质环境,结合电测深利用金属因素确定矿体的赋存部位,取得较好的效果。
短句来源
     Fushun Iron and Steel Plant is going to build the second 50t(or 60t) su- pehigh power electric arc furnace. Based on calculation of four plans it is conluded that de- vices of wattless dynamic compensation and filter devices mus be built no matter which plan is adopted.
     抚顺钢厂拟建第二台50t(或60t)超高功率电孤炉,本文通过对四种方案的计算,得出结论:无论采用哪种方案,都必须新建无功动态补偿装置和滤波装置。
短句来源

 

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  power electric
Service of mullite-corundum refractories in the center portion of the roof of high-power electric arc furnaces
      
Wear mechanism of wall linings of a high-power electric-arc steel furnace
      
Ways of increasing the reliability and operating life of sintered bearings of low-power electric motors
      
Resistance increased and flow patterns on the film surfaces were observed during the load-life tests to stress the resistive films at high-power electric pulses.
      
In the past few years, our group has done extensive research on ME materials for magnetic field sensing applications and current measurement probes for high-power electric transmission systems.
      
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This thesis submitts four types of constant current source models for vertical cascade recombination apparatus, andvarious calculating formulas on dynamic model resistance are thus reduced comments are made to each of their remarkable advantage as well as their disadvantage These models can be applied on sophisticated electronic instruments and equipment bearing senior constant curret source, particularly, on high Voltage kilolvolt or even much higher voltage equipment. Finally, illus trations are detailed on...

This thesis submitts four types of constant current source models for vertical cascade recombination apparatus, andvarious calculating formulas on dynamic model resistance are thus reduced comments are made to each of their remarkable advantage as well as their disadvantage These models can be applied on sophisticated electronic instruments and equipment bearing senior constant curret source, particularly, on high Voltage kilolvolt or even much higher voltage equipment. Finally, illus trations are detailed on extreme effects of appli cation.On laser power electric source and ten kilovolt class high Voltage big power amplfier.

本文提出了四种纵向串级复合器件恒流源电路模型,进行了分析与探讨。推导了各种模型动态电阻的计算公式。论述了各自的优点及不足之处。这些模型可以用在高精尖电子仪器设备需要用高级恒流源之处。特别适用于高压千伏及万伏级设备中。最后举例说明它在激光电源及万伏级高压大功率放大器的应用中能取得极佳效果。

This paper describes the method of constructing the model for thyri-stor device which used for power electric circuits and presents a nonlinear lumped equivalent circuit model for it.In modelling of the thyristors, it is based on the analog of the physical process of carriers moyement inside the device. The following facts are also analysed:( 1 ) Injection of minority carriers in device. ( 2 ) Generation and recombination of carriers in space charge region.( 3 ) The effects due to the avalanche multiplication...

This paper describes the method of constructing the model for thyri-stor device which used for power electric circuits and presents a nonlinear lumped equivalent circuit model for it.In modelling of the thyristors, it is based on the analog of the physical process of carriers moyement inside the device. The following facts are also analysed:( 1 ) Injection of minority carriers in device. ( 2 ) Generation and recombination of carriers in space charge region.( 3 ) The effects due to the avalanche multiplication basewidth modulation, and charge storage.The mathematical formulas describing these physical process are replaced by corresponding nonlinear elements and an equivalent circuit model for a thyristor is formed which consists of nonlinear resistors, nonlinear capacitors and controlled current sources.Using this model, it is possible to analyse the dynamic nonlinear characteristics of thyristor's ON-OFF process.

本文讨论了用于功率电子电路的晶闸管模型的建立方法。给出了一个适用于计算机辅助设计的非线性集中参数的晶闸管等效电路模型。 模型的建立是基于对器件内部载流子运动的物理过程进行模拟,分析了器件的少数载流子注入;空间电荷区内部载流子的产生与复合;雪崩倍增效应;基区宽度调制效应及电荷存贮效应。将反映这些物理过程的数学公式用非线性电路元件表示,组成了由非线性电阻、电容及受控电流源所构成的晶闸管模型。 利用这个模型可以分析晶闸管开关过程的动态非线性特性。

Eguipment and technology of high-power electric spark deposition, and the characteristics of deposited layer also, are presented.

介绍了大功率大厚度电火花强化处理工艺研究所采用的实验系统、脉冲电源、手动及机械化强化处理工具的结构特点、强化处理的基本规律以及强化层的特性。还介绍了采用大功率电火花强化工艺处理工模具和大型零件的使用效果。

 
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