power factor of load 中文意思是什麼

power factor of load 解釋
負載功率因數
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  • factor : n 1 〈英國〉經銷人；（代客買賣收取傭金的）經紀人；代理商；代辦人；〈蘇格蘭語〉 土地經管人。2 要素...
  • of : OF ＝Old French 古法語。
  • load : n 1 裝載，擔子；負擔；工作（負荷）量。2 （車船等的）裝載量；一馱，一車，一飛機。3 【電、機】（機...
  1. By analyzing the basic principle of voltage space vector pwm, a method is proposed to choose the zero vectors dynamically according to the power factor angle of the load and the concept of the lag angle of non - switching sectors

    在分析了空間矢量pwm基本原理的基礎上，提出了一種根據負荷功率因數角動態分配零矢量的方法，並引入了不開關扇區滯后角的概念。
  2. This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power

    該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場，可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數，並具有負載性質（感性、容性）判別，正、逆相序判別指示功能；超限報警功能；列印記錄功能和負功檢測及處理功能。
  3. Section iii proposes a possible organization of a reactive power market, a regional reactive power market established according to the distribution of the load and the reactive supply. the regional reactive power market is composed of a reactive energy market based on marginal pricing and a reactive capacity market based on a reactive regulating capacity payment. the cases in section iv, based on the market organization proposals and the reactive bid structure previously presented, performed on a five - bus system and the ieee 14 bus system, are used to analysis the effects of active bid, voltage control and power factor on the reactive marginal price

    本文首先回顧了電力市場發展的歷史和現狀；然後對市場中的定價方法和無功輔助服務的內容及特點進行了總結，並介紹了一些國家的無功輔助服務市場模式和交易方法；接著立足我國國情，提出了單邊開放電力市場下的無功市場框架：即根據負荷和無功源的分佈特點建立區域無功市場，各區域無功市場又由相應的無功電量市場和無功容量市場組成；並提出了該無功市場模式下的機組報價模型和基於報價的以系統總購電費用最小為目標的無功電價計算方法；最後用一個5節點系統和ieee14節點系統進行了實例分析，初步研究了發電機有功報價、系統電壓控制以及負荷功率因數對無功電價的影響，得出了一些有借鑒意義的結論。
  4. In the actual cases, there are many motors often operate on low load with low power factor and low efficiency, also there are many motors operate on the magnetic flux saturate region with high energy consumption, a large mount of energy used by ac motors is wasted due to all of those factors

    在實際運行中，許多電動機經常處在低效率、低功率因數的欠載運行狀態下，還有許多電機則是鐵芯磁通常進入飽和區的高能耗電機，這些因素均可導致大量電能的浪費。
  5. At present, low power factor, abundant harmonics and negative sequence are the three main characters of electrical railway traction load

    功率因數低、諧波含量大和不對稱性是現代電力牽引負荷的三大技術特點。
  6. The simulation results show that the power factor and efficiency of lim are much lower than that of rotary induction motor due to end effect and big air gap of lim. end effect force has a great influence on the thrust of lim. the performance of lim can be improved with the proper secondary structure, small air gap, big goodness factor or heavy load

    結果表明:受邊端效應及大氣隙影響，直線感應電機功率因數及效率較低;運行狀態下的邊端效應力對電機推力有較大影響;設計電機時選用合適的次級材料、減小氣隙、增大品質因數、增加負載都可提升電機的輸出性能，通過設計有效的控制演算法可使電機在額定滑差下具有較高的運行效率。
  7. By analyzing the load factor and unbalance factor of distribution transformer, the method of calculating and selecting the low voltage reactive power compensation capacity and compensation equipments, and the connection mode of capacitors were presented

    摘要通過對配電變壓器負載率和不平衡率的分析，提出低壓無功補償裝置補償容量的計算選擇方法和電容器的接線方式。
  8. The inverted pwm changing electric current the technique is applied in the prototype model. the prototype model was tested and operated on spot, power factor could reach beyond 0. 95, the effect of following modulating voltage was better, the curve of factor of modulated voltage of exchanging systems changed following load rate was linear, the output of wave form was a flat and steady sinusoidal wave

    樣機採用了逆變式pwm變流技術，對其進行了現場測試與試運行，測試結果是電網側的功率因數可達0 . 95以上，跟蹤調壓效果良好，變流系統輸出調壓系數（ k ）隨負載率（ p ）的變化曲線基本滿足直線關系，輸出波形呈平滑穩定的正弦波。
  9. Generator s operation with leading power factor, as a means of voltage control, has been adopted widely as required in case of light load and high voltage

    作為一種調節系統電壓的手段，發電機進相運行已在電網小方式電壓偏高情況下按系統需要普遍採用。
  10. 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。
  11. The results show that under the new power supply scheme, load rate of equipments, power factor of supply system and supply efficiency of system all have been greatly improved

    在新供電方案下，油田電網的設備負荷率、系統功率因數、供電效率都得到很大提高。
  12. Early exploited oilfields mostly adopt the power supply mode of single well & single transformer & single asynchronous motor, which causes that the load rate of equipments in oilfield network is low, the power factor of oilfield network is lower and the energy loss of oilfield network is bigger

    摘要早期開發的油田多採用「單井單變壓器單異步電動機」供電模式，造成油田電網的設備負荷率和系統功率因數過低，電網耗能較大。
  13. The math model built into the distribution reliability management system of daqing oil field power system is clear, and the relation among each factor is explicit. this dissertation resolves the questions, which the calculation speediness and the node capability, and breaks through the number limitation of load - points and lines, by making use of special model method and new - found calculation thought. so it is an object - oriented computer management system, and is also a signification attempt in research of distribution system reliability assessment

    大慶油田電網可靠性管理系統所建立的數學模型清晰，各相關因素關系清楚，獨特的建模方法和全新的計算思路，突破了負荷節點數和線路條數的限制，解決了節點容量和運算速度等技術難題，是一個面向工程應用的計算機管理系統，是配電系統可靠性評估領域一個有意義的嘗試。
  14. The effect on the generator excitation magnetic field is different when the capacity and power factor of load are different, and the effect on the internal impedance voltage drop is different, too

    而不同容量的負載，以及負載的不同功率因數，對同步發電機勵磁磁場的作用是不同的，對同步發電機的內部阻抗壓降的作用也是不一樣的。
  15. Discuss the factor influencing the lsc value : network structure, distributing proportion of load, power supply configuration. analyze every factor by examples

    並深入探討了影響lsc的幾個因素：電網拓樸結構、節點負荷分佈比例、電源配置，對每個制約因素分別進行了算例分析。
  16. Isolated boost converter has advantages of high frequency electrical isolation, multi - output solutions, lower input ripple current and high reliability for the short circuit of load, etc. it is attractive in applications such as high voltage multiple outputs with isolation requirement, single stage power factor correction and bi - directional dc / dc converters

    電氣隔離型boost變換器具有高頻電氣隔離，易於多路輸出，輸入電流紋波小，負載短路時可靠性高等優點。它適用於有隔離要求的高壓多路輸出、雙向pwm直流變換和單級pfc等場合。
  17. Abstract : this paper deals with the simulation result analysis of three phase synchronous generator with rectified output with stator y connected, as well as with stator connected. the curves of overlap angle, displacement angle and power factor with load are presented, and the tendency of these curves are also described

    文摘:對整流負載時凸極同步發電機定子繞組及y聯結模擬結果進行分析，繪出反映整流特性的換流重疊角、位移角以及功率因數隨負載變化曲線，並對變化趨勢進行分析。
  18. Load factor the load factor is the ratio of the average load to the generator set power rating

    負荷系數負荷系數指的是機組的平均負荷與額定功率之間的比率。
  19. Study of load characteristic and power factor enhance for pump oil machine

    抽油機的負載特性及提高功率因數措施的研究
  20. As the object of the task, ups inverted by igbt with constant current adjusting and high power factor ( abbreviated to ups with constant current ) is known from others by : 1, high power factor as to the power system 2, constant current output at different level according to the demand ( from zero load to rating load )

    作為本課題的主體，高功率因數恆流調光igbt逆變ups （以下簡稱恆流ups ）具有其區別于普通ups的獨特之處： 1 、實現電網側的高功率因數2 、電源輸出為分級恆流（從零負載到額定負載） 。
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