power-factor control 中文意思是什麼

power-factor control 解釋
功率因數調節
  • 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...
  • control : n 1 支配，管理，管制，統制，控制；監督。2 抑制（力）；壓制，節制，拘束；【農業】防治。3 檢查；核...
  1. Appling closed loop control strategy in the power factor dynamic compensation system. then the key techniques, for example, the fashion of real time sampling idle current and the fashion of compensation capacitor connected with, the time when the compensation capacitor are thrown up, are researched

    針對本系統的應用對象，確定了本系統中所應用的無功電流實時檢測理論和方式、補償電容器接線和分組方式、補償電容器投入時刻的選擇等關鍵技術；並對can技術應用於功率因素動態補償系統進行了研究。
  2. The harmonic circulating current balancing is an important factor in the parallel operating control for it makes the units of the system to get. an equal power factor and makes foundation for the system to work stable and reliable

    並聯電源系統的諧波環流均分控制是實現負載的失真功率均分，保證各並聯單元的輸出功率因數均衡，保證並聯系統穩定可靠工作的一個重要方面。
  3. One - cycle control of active power factor correction

    單周期控制有源功率因數校正
  4. And the fuzzy control technology has been studied that reduce the stator terminal voltage to achieve higher power factor through testing power factor and using certain rules. the asynchronous motor intelligence operating control system plan design has been completed. simulation design and simulation experiment of the system has been carried on, and the simulation result indicated this intelligence control system has achieved the anticipated effect

    在分析電機功率因數角的變化規律及功率因數角對晶閘管輸出電壓的影響的基礎上，提出了異步電動機在輕載或空載運行時通過檢測功率因數並經過一定規則降低定子端電壓來達到提高功率因數目的的模糊控制方法，完成了異步電動機節能運行控制系統的軟硬體設計，並進行了系統的模擬研究與實驗研究。
  5. The basic theory for all sorts of power factor correction is analyzed, and the topology and control circuit are studied

    分析了各種功率因數校正的基本工作原理，並從主電路的拓撲形式和控制方式分析了各類有源功率因數校正的方法。
  6. The pulse - width modulated ( pwm ) is the key technologyto acquire the high power factor. the document presents the principle of three - phase pwm, then analyzes and compares the several maturely control methods for pwm

    本文將交流電機理論中空間坐標系旋轉變換理論引入到pwm整流器的分析中來，建立了三相pwm整流器的統一的數學模型。
  7. 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。
  8. With promulgation and obliging actualization of iec 1000 - 3 - 2 etc. international standards, power factor correction ( pfc ) technique become a hotspot of research in power electronics field. based on average current mode, the paper introduce the design and implementation of a fully digital controlled single - phase boost power factor corrector with fast response. the control - loop circuit is realized using digital control and the corrector can tend to unity power factor, lower current harmonics and high transfer efficiency

    本文在平均電流模式控制的有源功率因數校正技術的基礎上，設計了一種控制電路基於數字信號處理器（ dsp ） 、主電路採用boost變換器拓撲結構的全數字單相功率因數校正器，用數字電路代替傳統的模擬電路來實現對整個迴路的控制，最終使得校正器具有輸入功率因數接近於1 、低電流諧波以及高轉換效率的特性。
  9. According to the fact that power factor of low voltage power networks is very low in china and field bus technology is developing in the world, in order to enhance power factor of low voltage power networks, on the basis of central transmitting and controlling information among every compensation equipment, the author of this dissertation studies systematically the design principles of power factor dynamic compensation system. based on analyzing structure of control system at present, the author of the dissertation puts forward a distributed completely and multi - layer structure framework based on field bus technology and builds a power factor intelligent dynamic compensation system. the functions of compensation unit, intelligent node, host computer, are presented

    根據目前低壓電網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，立足於提高交流電機的功率因數，基於將每個補償裝置進行集中監控、信息集中傳遞的思路，本文作者在分析現有的控制系統體系結構的基礎上，提出了基於現場總線技術的全分散式多層控制系統的體系結構，構建了功率因素智能動態補償系統；對補償執行單元子系統、智能節點子系統、上位機子系統三部分進行了功能分析。
  10. 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。
  11. Measuring and control ; electrical measuring instruments ; terminal markings for switchboard meters, panel meters and measuring transducers for the measurement of power and power factor

    測量和控制.電測量儀表.配電板儀表測量功率及功率
  12. So the vsr can operate in any power factor. internal model control ( imc ) design concept has been introduced to the unbalanced control system of vsr. with imc design concept, the unbalanced control system not only achieve zero steady state error of sinusoidal ac current, but also obtains strong robustness of the control system

    由於在abc和靜止坐標系中，採用比例和比例積分調節器無法實現對時變正弦波信號的無差跟蹤控制，而在dq坐標系中需要用正、反兩套旋轉坐標系構成四個電流內環才能實現對正、負序dq電流的無差跟蹤。
  13. In such way, the frequency, the virtual value, the harmonic and power factor are acquired. it can achieve the intelligent control by way of cooperating with master station automatic apparatus system through adopting rs - 485 communication standard

    同時根據采樣值系統計算了頻率、有效值、諧波、功率因數等電量，並通過rs - 485通信口與二級子站微機相配合，達到智能控制的作用。
  14. Based on the analysis of the control theory of the dtc of doubly fed induction machines, in this paper, two control schemes are proposed : the least mode of rotor current and the stator power factor adjustable mode. in the first control scheme, we may make the rotor voltage the same or opposite phase with the rotor current by throwing suitable rotor voltage vector

    在第一種控制方案中，通過施加轉子電壓矢量，使轉子電流與轉子磁鏈垂直，轉子勵磁全靠定子電流，即可保證轉子電流和轉子電壓同相或反相，從而實現了轉子側功率因數為1 ，可減小轉子側變頻器的容量。
  15. The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization

    而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。
  16. It consists of forward stage and backward stage, of which the forward stage is a single - phase boost power factor correction circuit using ic uc3854. the backward stage main circuit is a full - bridge converter using phase - shifting control soft - switching technique

    該開關電源分為前級和后級，前級為採用boost結構的單相有源功率因數校正電路，后級為採用移相控制軟開關技術的全橋變換器。
  17. Finally, it proposes a new scheme that controls the power factor of pmsm. the model can control the power factor by controlling the stator current on the basis of the speed control

    最後，建立了永磁同步電動機功率因數控制的模擬模型，在轉速控制的基礎上，通過控制定子電流來實現功率因數控制。
  18. Power factor characteristics of the rectifier is introduced, and control methods for the conduction angles are analyzed

    摘要介紹了整流裝置的功率因數的特點，分析了導通角的控制方法。
  19. Abstract : in recent years, with the successful application of hig h - frequency switching power supply in communication power, there are a lot of con trol circuits for power factor compensation now. in this article, the writer reco mmands a kind of practical and reliable control circuit

    文摘:近幾年來，高頻開關電源成功地應用於通信電源上，而用於功率因數校正的控制電路有多種，現只介紹一種實用可靠的控制電路的功能、特點及控制方法
  20. Because of the poor power factor and other concerns regarding a large phase back, multiple tap transformers are recommended even when the control device is a scr

    由於缺乏能量的因素還有關于多了一大段的關系，即使當使用可控硅整流器時也推薦使用多插孔變壓器。
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