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双语推荐：RCD

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电力安监部门要求定期测试剩余电流动作保护器（RCD）的动作特性，准确评价RCD的状态。在分析RCD的故障模式及其原因的基础上，对各种状态信息量进行分析比较，提出了基于模糊综合评判法的RCD状态评价方法。该方法综合考虑反映RCD运行状态的各种状态信息，统筹状态评价中主观、客观因素。应用实例表明，该方法能有效评价RCD的状态。
Based on the analysis of the fault mode of residual current operated protective device (RCD) and its causes,various state information was analyzed and compared.A state evaluation method of RCD based on fuzzy AHP was proposed.The method comprehensively considered various state information which reflects the operating state of RCD,co-ordinating the subj ective and obj ective factors in the evaluation.The application example shows that the method can effectively evaluate the state of RCD.

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探索正常SD大鼠及视网膜锥体失功能(RCD)大鼠不同颜色光视网膜电图特点及其可能存在的诊断价值。方法:成年雄性SD大鼠及RCD大鼠,各6只,分别进行红、白、绿及蓝色光的视网膜电图记录,刺激所用的红光波长为625nm,绿光波长为525nm,蓝光波长为470nm,白光为混合光。结果:正常SD大鼠各颜色光ERG表现为短波长的绿光及蓝光刺激条件下波幅值较红光及白光高;而RCD大鼠各颜色光暗适应ERG的b波波幅值无显著差别,但各颜色光的波幅值均小于SD大鼠;而各颜色光明适应ERG均未记录到明显波形。结论:大鼠对短波长的绿光及蓝光较为敏感,建议可使用蓝光或者绿光作为大鼠视网膜电图记录的刺激光源。RCD大鼠对各颜色光无特异性的反应,尚不能用颜色光视网膜电图作为其特异的诊断指标。
AIM: To research the feature of normal SD rat and retinal cone dysfunction ( RCD ) rat electroretinogram ( ERG) under different color stimulation and to explore its possible diagnostic value. METHODS: Six male SD rats and six RCD rats were used, all of which were mature rats. They were stimulated by red, white, blue and green light and the ERG was recorded.The wavelength of red, green and blue light were 625nm, 525nm and 470nm respectively and the white light was mixed by three color light. RESULTS:The response of ERG in normal SD rat under green and blue light stimulation were stronger than under red and white stimulation.The dark-adapted ERG of RCD rat responsed to color stimulation was similar to the ERG of normal SD rat, but the amplitude under each color stimulation was lower than that of normal SD rat.Light-adapted ERG response was hardly detected waveform. CONCLUSION:Rat is sensitive to blue and green light, which can be used as a suggested light stimulation in the ERG recording

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我国水利资源比较丰富。而开发和利用水利资源,需要建设水坝来调节水流量,提供水力发电,灌溉农田。水坝的建设,能够促进我国经济的发展,也给我国人民带来了诸多的便利。但是,在水坝的建设中,由于坝体差的缘故,容易出现渗漏现象。特别是我国水利设施使用RCD碾压混凝土坝坝体,时常发生局部渗漏现象。文章就此探究了RCD碾压混凝土坝坝体出现渗漏现象的原因,提出了防治水平施工缝渗漏的方法,并对坝体薄弱部位、裂缝部位的形成进行分析,从而得到解决混凝土坝坝体渗漏的方法和措施。
China''s rich water resources comparatively.It is needed to build dams to adjust the water flow for the development and utilization of water resources , to provide hydroelectric power , to irrigate farmland ,The construction of a dam can promote the development of our national economy , it also has brought many conveniences to the people of our country.However ,leakage phenomenon often happens in the construction of the dam due to the poor dam quality.Especially partial leakage phenomenon often appears for the RCD roller compacted concrete dam and water conservancy facilities in China.This paper probes into the reasons why RCD roller compacted concrete dam leakage phenomenon happens , the method of construction controlling horizontal joint leakage ,and the weak dam body place and cracks forming are analyzed in order to get the solutions and measures of concrete dam leakage protection .

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漏电保护器具有很高的灵敏度，它也用作防直接接触电击的后备保护。因此建筑中广泛采用漏电保护器是一项很重要的技术措施。我国这些年使用漏电保护器的经验已证明了它防护接地故障的有效性。本文对漏电保护器动作原理的进行分析，并探讨了RCD 在建筑工程中的应用和推广。
Earth leakage protective device is of high sensitive-ity, it is also used as a backup protection against direct contac-t electric shock. Therefore the leakage protector widely used in buildings is a very important technical measure. In recent years the experiences China using leakage protector has proved the effectiveness of its protective earthing fault. This paper discus-ses the application and popularization of RCD in construction engineering.

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依据通信电源标准,设计了一款36W/12V的DC/DC辅助电源.该电源选取带有RCD吸收回路的反激拓扑结构,适应40-60V的宽电压输入.控制芯片采用具有跳频功能的OB2269C,以降低带载量小时的损耗.文章最后给出了理论损耗值和测试结果 .
A 36W/12V DC/DC auxiliary power supply is designed based on the communication power supply standard. The circuit adopts the flyback toponology with RCD absorption circuit and it allows 40 to 60V voltage input. We select OB2269C with frequency shuffling function as the control chip which can reduce the loss with light load. The theoretical analysis of loss and the test results are given at the end.The two were found to be consistent.

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IGBT（绝缘栅双极型晶体管）缓冲电路对抑制IGBT开关过程中产生的尖峰电压具有重要作用。本文通过分析无损缓冲电路的原理及特点，结合原有RCD缓冲电路，探索研究了一种新的适用于IGBT逆变桥的无损缓冲电路，并采用Saber软件对两种电路进行了仿真分析，对比比较了两种缓冲吸收电路的优缺点。仿真结果验证了新无损缓冲电路抑制IGBT关断过电压的可靠性。
The turn-off reliability of IGBT(Insulated gate bipolar transistor)is very important for the inhibition of peak voltage which is produced by the IGBT switching process. This paper analyzes the principle and characteristics of lossless snubber circuit, and combines with the original RCD snubber circuit,Explores and researches a circuit which is suitable for IGBT inverter bridge lossless snubber. Simulates and analysises the circuit by the Saber software. The simulation results showed the turn-off reliability of inhibite this circuit over-voltage of IGBT.

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根据高功率 LED 的特性，设计了一种单级PFC反激式LED驱动电源。主电路拓扑采用反激变换器，变压器初级并联RCD 吸收电路，PFC 控制芯片L6562A工作于临界导通模式。在单级电路结构上，同时实现功率因数校正、DC／DC 变换和电气隔离。输出采用TSM1052进行限压、恒流控制，满足高功率LED的性能要求。
According to the characteristics ofhigh power LED,this paper designs a singlestage PFC flyback LED drive power supply.Flyback converter is used in the main circuit topology,RCD absorption circuit is in parallel with the transformer primary winding, and PFC control chipL6 5 6 2A works in transition mode (TM).On asingle stage structure,the drive power supply achieves a power factor correction,DC/DC conversion and electrical isolation.In the output of thecircuit,the control chip TSM1 05 2 is used Constantvoltage and constant current control to meet theperformance requirements of high power LED.

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本文针对现有＂电力电子技术＂课程中普遍存在的对于反激变换器箝位电路的作用、影响及其分析设计不完整的问题,详细分析了反激变换器工作过程,指出了箝位电路的作用及其对反激变压器能量传输过程和传输效率的影响,据此给出了RCD箝位电路设计的原则和步骤。本文有助于学生更加全面深入地理解反激变换器的工作原理和特性,更好地掌握其箝位电路设计的方法,具有一定的教学指导意义。
The analysis on the clamping circuit of flyback converter is insufficient in Power Electronics course. The detailed operation principles of flyback converter are analyzed in this paper. The influence of the clamping circuit on the energy transformation efficiency is presented,based on which the principles and steps for the design of the RCD-clamping circuit for the flyback converter are provided. This paper can help to understand the operation prin-ciples and characteristics of the flyback converter thoroughly,and to design the clamping circuit effectively,which has certain significance for the education of power electronics.

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为了提高车载吸尘器供电装置在实际应用中的安全性和可靠性,实现体积小、功能多的目的,文中有效利用了RCD有源钳位电路的优点,提出了一种基于电流连续模型（CCM）控制的单端反激式车载吸尘器供电装置,并进行了相关的理论分析。利用UC3842数字芯片作为控制电路的控制器,并对控制电路的多个组成部分通过计算进行了设置。最后对5V输出情况进行了空载和满载的实验,实验结果表明这种车载吸尘器供电装置的工作状态良好,输出电压稳定,可靠性高,适用性好。
In order to improve the car vacuum cleaner, security and reliability of power supply device in practical applica-tion, the realization of the aim of small volume and more function, the effective use of the advantages of the RCD active clamp circuit, and presents a continuous model (CCM) based on the current control of single-ended flyback type vehicle vacuum cleaner power supply devices, and analyzed the related theory. Using the UC3842 digital chip as control circuit of the controller, and the control circuit of multiple components were set up by calculation. Finally on the 5 v output of no load and full load experiment, the experimental results show that the vehicle vacuum cleaner power supply devices working con-dition is good, the output voltage stability, high reliability and good applicability. At the same time, also the problems oc-curred in the experiment of several solutions are given.

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该文提出一种带耦合电感的有源钳位高增益Boost变换器。通过引入耦合电感提高电压增益;采用有源钳位电路实现漏感能量的回收、抑制开关管关断电压尖峰,并为开关管实现零电压开通创造条件;通过合理设计漏感大小,有效解决二极管的反向恢复问题。该文所提变换器的主要不足是二极管的寄生电容和漏感会发生谐振,需要采用电阻电容二极管(resistor-capacitor-diode,RCD)吸收电路来抑制电压峰值。该文在分析变换器工作原理的基础上,对其性能进行了详细分析,最后搭建了一台48 V输入、380 V输出、额定功率为250 W的试验样机,实测最高效率为94.5%,实验结果验证了理论分析的正确性。
This paper proposed an active-clamp high step-up boost converter with coupled-inductor. The voltage gain of the boost converter was improved by introducing a coupled inductor. The active clamp circuit was employed to recycle the leakage energy, suppress the switch turn-off voltage spikes, and implement zero-voltage-switching turn-on operation. The reverse-recovery problem of the diodes was solved by the reasonable design of the leakage inductance. The main limitation of the proposed converter is the high peak voltage of the diode due to the resonance between the leakage inductor and parasitic capacitor of it, and a resistor-capacitor-diode (RCD) snubber circuit should be included. A 250 W prototype with 48 V-input and 380 V-output was built and the experimental results verify the correction of the theoretical analysis, the highest measured efficiency is about 94.5%.

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