負載損耗 的英文怎麼說
中文拼音 [fùzǎisǔnhào]
負載損耗
英文
load loss w- 負 : Ⅰ名詞1 (負擔) burden; load 2 (虧損) loss 3 (失敗) defeat Ⅱ動詞1 [書面語] (背) carry on th...
- 載 : 載Ⅰ名詞(年) year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
- 損 : Ⅰ動詞1 (減少) decrease; lose 2 (損害) harm; damage 3 [方言] (用尖刻的話挖苦人) speak sarcas...
- 耗 : Ⅰ動1 (減損; 消耗) consume; cost 2 [方言] (拖延) waste time; dawdle Ⅱ名詞1 (壞的音信或消息) ...
- 負載 : [電學] load
- 損耗 : 1. (損失消耗) loss; wear and tear; deterioration; waste 2. [商業] wastage; spoilage
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The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter
該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起,有效地降低了電路的開關損耗和開關噪聲,為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時,能拓寬零電壓開關的范圍,使變換器在較寬的負載變化范圍內都能實現軟開關。This paper analyzes the character of the transformer load and presents the control means to reduce the comprehensive power loss to minimum by controlling the transformer operation status, which forecasts the daily load of transformer by periodical auto - regression model ( par ) and divides the daily flow line automatically into two typical phases. then, this paper simulates the par by matlab. at last, a real intelligent control device based on the ti ’ s tms320lf2407 dsp has been completed
論文分析了配電變壓器的負載特點;提出採用周期自回歸模型預測配電站用電日負荷,根據負荷預測結果和用電時段,以綜合功率損耗最小為目的變壓器經濟運行控制方法;以ti公司的tms320lf2407dsp為基礎,完成了配電站變壓器經濟運行智能監控裝置的研製。Huadi has cultivated a famous brand in the urban electricity network equipment industry with our emphasis on technology, quality, and honesty, while maintaining the standards of high efficiency, staff recognition, and innovation
產品性能指標符合jb t10318 - 2002油浸式非晶合金鐵心配電變壓器技術參數和要求,該產品與s11產品性能比較,其空載損耗僅為s11空載空載損耗的33 ,負載損耗相同。Each unit of transformer is tested in accordance with the following items : winding d. c resistance test. measurement of turn ratio and calibiation of voltage vector relation. measurement of impedance voltage and load loss
直流電阻測試匝數比測量及電壓矢量關系的校定阻抗電壓及負載損耗的測量空載損耗及空載電流的測量工頻耐壓測試感應耐壓測試絕緣電阻測試局部放電測試外觀和尺寸的檢驗銘牌的檢驗等。Three phase dry type power transformer, which make it with those features : safety, reliability, and energy saving, fireproof, flameproof, simple maintenance etc., the design is advanced ; the structure of products is reasonable and the outline is fine, the main performances of the products are much better than the national standards, for example, partial discharge level no - load loss, on - load loss, noise level, it is adaptable for application on heavy humidity and severely pollute places which are near to lake, sea and rive, as well as, high demand - fireproof, heavy load capacity place, such as : high building, airport, station, port, underground, hospital, electrical power station, metallurgy, shopping center, residential area and petroleum chemical industry, nuclear power station, nuclear - powered submarine
非包封線圈三相干式變壓器,具有安全可靠節能防火防爆維護簡單等優點。其設計先進結構合理外形美觀。主要性能指標均優于國內標準,如局放水平空載損耗負載損耗噪聲以及能適應高溫度環境使用等,可安裝在靠近湖海河邊污穢潮濕的環境及防火要求高負荷較大的地區,適用於高層建築機場車站碼頭地鐵醫院電廠冶金行業購物中心居民密集區以及石油化工核電站核潛艇等場所。Windings d. c. resistance measurement, measurement of impedance voltage and on - load loss, measurement of no - load loss and on cload current, power frequency withstand voltage test, inductive voltage with standing test, measurement of partial discharge level, inspection of appearance and dimension inspection of name plate
直流電阻測試匝數比測量及電壓矢量關系的校定阻抗電壓及負載損耗的測量空載損耗及空載電流的測量工頻耐壓測試感應耐壓測試絕緣電阻測試局部放電測試外觀和尺寸的檢驗銘牌的檢驗等。In at power supply system some transformers with special connection mode, such as scott transformer, anti - scott transformer, balance transformer and so on, are usual used. the voltage ratio is one of important parameters of transformer
採用斯科特變壓器、平衡變壓器等特殊接線方式變壓器作為主變壓器,能有效抑制負序電流,減少有功損耗和電壓損失,提高牽引機車的過負載能力。It is validated that the design of induction machine vvvf control system has its rationality and feasibility. the distinct reduction of switching loss shows the efficiency of the three optimal switching patterns initiated. the research of this paper lays a solid foundation for the research of the high - speed motor control system to be continued
空載和負載實驗表明文中所提出的感應電機調速方案的正確性和實用性,以及三種優化svpwm開關模式在減少開關損耗等方面的有效性,為后續的高速、超高速電機控制打下了理論和實驗基礎。In china, the quantity of electromotor - consumed electricity is 60 % - 68 % of that of all industry - consumed electricity. reactive wastage aroused by electromotor is central source of electricity wastage. since large and medium - sized electromotor contribute mainly to the equipment consumed electricity of many industry enterprises, how to reduce wastage aroused by large and medium - sized electromotor has become the key to saving energy and reducing wastage for many industry enterprises
在我國,電機所耗電能占整個工業用電的60 - 68 ,電機等感性負載所引起的無功損耗是電網無功損耗的主要來源,而大中型電機又是許多工業企業的主要用電設備,因此,如何減少大中型電機造成的無功損耗成為許多工業企業節能降耗的關鍵。Aiming at the fact that power factor of low - voltage power equipment is very low in china and application condition of fieldbus technology in the world, based on enhancing power factor of ac motor, lowering losses of the reactive power, improving power quality, therefore, it is of great significance and practical value to research the reactive power compensation by applying the technology of fieldbus, computer and power electronics
針對目前國內低壓設備用電負載功率因數偏低和國內外現場總線技術的應用現狀,基於提高交流電機的功率因數、降低無功功率損耗和改善電能質量,本文綜合運用現場總線技術、計算機技術和電力電子技術對交流電機無功功率補償的有關方面進行了研究,其研究成果具有一定的理論意義和實用價值。Calculation of the current rating of electric cables. part 1 : current rating equations 100 % load factor and calculation of losses. section 2 : sheath eddy current loss factors for two circuits in flat formation
電纜載流量計算.第1部分:載流量公式100 %負荷因數和損耗計算.第2節:雙迴路平面排列電纜金屬套渦流損耗因數The analysis and study on the dynamic efficiency of pmsm performing under the various loads. the influence of machine ' s parameters on dynamic efficiency and dynamic power factor is studied ; this has significant meaning for design of pmsm applied in the various load fields. the theoretical analysis and fem calculation fo air - gap magnetic field of pmsm is done
在建立永磁同步電動機dq軸數學模型時,考慮了電機的鐵耗和雜散損耗,提高了模擬計算的精度,根據實測的負載變化情況,對永磁同步電動機的動態性能進行模擬,並研究分析了電機各參量對其動態平均效率和動態平均功率因數的影響,總結出變化規律。Calculation of the current rating of electric cables. part 1 : current rating equations 100 % load factor and calculation of losses. section 1 : general
電纜載流量計算.第1部分:載流量公式100 %負荷因數和損耗計算.第1節:一般規定Compared with phase - shift control, pwm plus phase - shift control can reduce the current stresses and rms currents of the converter. the loss of the converter can also decrease. lt is proved the converter can achieve zvs in larger load variation
與常規相移控制方式相比, pwm加相移控制方式能減小變換器的電流應力,減小通態損耗,同時也能拓寬零電壓開關的范圍,使變換器在較寬的負載變化范圍內都能實現軟開關。Firstly, the basic theory of full - bridge phase - shift zvs pwm converters are expatiated and another three kinds of circuits of full - bridge phase - shift zvs pwm converters are discussed. there are four kinds of problems which are emphasized : how to expand the zvs range ; how to reduce the circulation in the primary side of the transformer in order to minimize the on state losses ; how to decrease the loss of effective duty circle and how to eliminate the parasitic oscillation of the output rectifiers
本文首先分析了基本的全橋移相zvsdc dc變換器的工作原理,為解決滯后橋臂不易實現零電壓開關( zvs )的情況,討論了另外三種全橋移相zvsdc dc變換器的電路拓撲,重點分析並解決了四個方面的問題:如何擴大zvs的負載范圍;減小變壓器原邊環流,降低變換器系統通態損耗;減少變壓器次邊有效占空比丟失;消除輸出整流二極體的寄生振蕩。So the emergence of facts is just for the purpose of solving these problems of power system. as a branch of facts, active power filter ( apf ), a new power and electric equipment, its function is to eliminate load harmonic and compensate system line reactive power, damp system surge of node voltage, decrease power waste of system line
作為facts的一個重要分支- - - -有源濾波器( apf ) ,是為了解決系統線路無功功率因數過低以及負載線路諧波過多,從而出現線路損耗大、電源電壓的瞬態波動過陡等一系列相關問題而產生的一種新型電力電子裝置。Different distribution of power loss can be worked out by mathcad software based on the formula reasoning. the result of calculation is consistent with that of the experiment, which proves that this method is right. it is pointed out through the analysis of calculating data that the key to improve efficiency at the same output power is to decrease the peak current and rms current of power switches or the on - resistance of mosfet and windings
由推導可得損耗計算公式,利用數學計算軟體計算出電路輸出從空載到410w阻性負載時損耗分佈變化,該結果與實驗數據基本相吻合,證實了這種方法的正確性;通過對計算數據的分析,指出了進一步提高效率的關鍵在於輸出相同功率時降低功率管的電流峰值和有效值,減小繞組和mosfet的導通電阻。The main idea of our algorithm is to avoid choosing nodes with lower residual energy as cluster - heads, thus to ensure balanced energy - usage among the nodes in the network
演算法通過綜合考慮候選節點的剩餘能量級、通信能量損耗等參數來優化簇首的選擇,從而有效地避免了低能量節點被選為簇首的可能性,進一步保證網路內節點能量負載的均衡性。It is approved that the deficiency level keeps relatively the lowest and the dielectric constant however shows the highest, if the contents of mn3 + and la3 + are comparatively the same. on the contrary, the dielectric constant decreases with increasing the contents difference of mn3 + and la3 + ions. the effect of overlap appeared when the dielectric loss was aroused due to the activation of positive and negative carries at certain temperature, which brought abnormally high dielectric loss
證實了材料在mn ~ ( 3 + )含量與la ~ ( 3 + )含量相當時體系中產生的缺陷相對最少,其介電常數最大,反之隨兩者含量偏差的增大而下降;材料中由正負兩種局域載流子在一定溫度下激活過程中產生的損耗出現了迭加效應,給出了異常的高損耗值;材料中隨著mn摻量的增大,體系提供的3d電子數增多,電子輸運通道改善,導電性提高。This paper takes transformer loss as object function, discusses design of dynamic voltage restorer with series of injection transformer and presented a design method of minimum loss and optimal load loss
摘要以變壓器損耗為目標函數,就動態電壓調節器串聯注入變壓器的設計進行了探討,提出了一種總損耗最小及負載損耗最優的設計方法。分享友人