高频变压,high frequency transformation
1)high frequency transformation高频变压
英文短句/例句
1.Series Optimization Design for High-power High-voltage High-frequency Transformer大功率、高压、高频变压器的串联优化设计
2.Mode and Loss Analysis of High Power, High Voltage and High Frequency Transformer大功率高压高频变压器模式和损耗分析
3.Research of the High Voltage Transformer for EBW电子束焊机高压电源高频变压器的研究
4.Research for Approximation Algorithm of High-frequency Model of Transformer Windings高频变压器绕组模型的降阶算法研究
5.Design of 36 Pulse Phase-shiting Transformer of HV Frequency Inverter高压变频器36脉波移相变压器的设计
6.Research on the Common Mode Voltage of High Voltage Variable Frequency Driver and Electronic Power Transformer;高压变频器和电子电力变压器共模电压研究
7.Research on Voltage Balancing of Series Connection of IGBTs in a 10kV High Voltage Frequency Converter;10kV高压变频器中IGBT串联均压的研究
8.The Application of High-voltage Inverter in the Screw Air Compressor高压变频器在螺杆式空压机上的应用
9.Development of a Compact Repetitive High-voltage Pulse Transformer紧凑型重复频率高压脉冲变压器研制
10.The Application of High Voltage Inverter in the Toward Multiple Air Compressor高压变频器在往复式空压机上的应用
11.HF Electromagnetic Compatibility Study in HV Substations Operational with FACTS Equipments高电压FACTS变电站的高频电磁兼容研究
12.Research and Design of Application of Phase-Shifting Transformer to HV Frequency Converter移相变压器应用于高压变频器的研究与设计
13.Study on Traveling-wave Based Fault Location for Extra High Voltage Transmission Lines and Research on Medium-Voltage Inverter;超高压线路故障行波定位及高压变频技术研究
14.Test and Fault Analysis for High Power High Frequency High Voltage Transformer大功率高频高压变压器的试验及故障分析
15.Study on High Frequency Inverter Topology Using for Piezoelectric Oscillator;用于压电振子的高频逆变器拓扑研究
16.Three-phase Bi-directional Voltage-source High Frequency Link Inverter;三相双向电压型高频链逆变器的研究
17.Research on Three-level Medium Voltage Variable Requency Drive and Related Problems;三电平高压变频器及其相关问题研究
18.The Design and Application of High-Voltage Inverter with Overlying Series Units;单元串联高压变频器的设计及其应用
相关短句/例句
high-voltage frequency conversion高压变频
1.The operating principle and energy-saving principle are introduced based on the analysis of applied example ofhigh-voltage frequency conversion of 300 MW unit condensate pump.介绍了变频器的工作原理及节能原理,通过分析300 MW机组凝结水泵国产高压变频器的应用实例,指出现有运行方式中存在的问题;通过比较运行过程中不同负荷工况下的参数,可以看出高压变频技术的应用具有良好的经济效益、社会效益以及良好的推广价值。
3)high voltage frequency conversion高压变频
1.Application of newhigh voltage frequency conversion operation technology to auxiliaries in thermal power plant高压变频运行新技术在火电厂辅机上的应用
2.Starting from a new aspect,it explained a new way to realize energy saving without retrofitting DCS and control logic at site in the application ofhigh voltage frequency conversion.从全新的角度,诠释了高压变频在系统应用中不对DCS和现场控制逻辑改造,即可实现节能应用的一种新方法。
4)high voltage inverter高压变频
1.Thishigh voltage inverter system uses the high voltage elevator inverter which Shandong Xinfengguang Electronic Technology Develops Co.主要介绍了煤矿提升绞车高压变频系统的实施目标,实施过程以及解决的技术关键。
5)High-voltage inverter高压变频
1.This article mainly introduces the principle and application of high-voltage inverter.介绍了高压变频器调速的原理及应用情况,结果表明,高压变频器具有优良的调速性能和节能效果,具有极好的发展前景。
2.According to the analysis of power-exhausting system combining the control characteristic of high-voltage inverter,practical application of high-voltage inverter in power-exhausting fan and significant economic benefits applying high-voltage inverter are described.通过对制排粉系统的综合分析,结合高压变频调速技术的控制特性,阐述了高压变频调速技术在排粉机系统中应用的技术路径和排粉机系统采用高压变频调速技术的经济性分析;充分论证了高压变频在排粉机系统中应用后系统运行可靠,经济效益显著。
3.Based on the particularity of power generation operation,analyses energy-economization effect of high-voltage inverter in this operation,and proposes the requirements for the inverter,the applications of high-voltage inverters regarding the configuration of machines in power plant is introduced,and puts forwards some points that should be noticed during the selection and usage.根据电力生产的特殊性分析了变频调速在电力生产中的节能效果,提出了电力生产对变频装置的要求,根据电厂机组的配置情况分析了高压变频装置在电厂应用的情况,也提出了高压变频器在选用和使用过程中须注意的问题,最后还简单介绍了高压变频技术的现状,并提出高压变频在电厂的节能降耗中是大有可为的。
6)high voltage variable frequency高压变频
1.This paper analyzes the possible main faults and basic fault characteristics based on the structure characteristics of three levelhigh voltage variable frequency speed control system.针对三电平结构的高压变频调速系统的结构特点,对其可能出现的主要故障情况和基本故障特征进行了分析,提出了相关的保护原理和实现方法。
2.Thehigh voltage variable frequency transformation of power plant’s pump system of condensation water pump, condensation water booster pump is described briefly.对发电厂的凝泵、凝升泵的高压变频改造进行了简要叙述,并对经济性试验的数据进行了定量分析。
延伸阅读
甚高频和超高频多普勒雷达工作在30~3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1~100公里,所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度(见大气静力稳定度)等大气动力学参数的铅直分布。原理 这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射;②稳定大气分层结构对入射电磁波的部分反射;③有时出现于中层大气的自由电子对电磁波的散射;④中层大气中的流星余迹散射。散射体积内空气的运动,使雷达回波具有多普勒频偏。结构 MST 雷达的结构和气象多普勒雷达大致相同。其特点在于:它们一般配备了大型天线(天线阵),有些甚高频段雷达的天线阵,尺度达 30~200米,采用半波振子阵或八木天线振子阵,以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线,这类雷达的发射功率在几百千瓦至 2兆瓦之间,发射功率和天线面积的乘积值在106~1010瓦·米2之间。此外,为获得高灵敏度和高空间分辨率,在脉冲发射体制和回波数据处理方面,也采取一些技术措施。用途 利用回波的多普勒频谱可以进行下述各项测量:①探测大气风场的铅直分布。同一仰角,空间分辨率约为 150~1000米,采用脉冲压缩技术后,分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后,可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前,甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化,而不能给出三维空间分布资料。参考书目K.S.Gage,B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59,No.9,pp.1074~1093,1978.