electric excitation 中文意思是什麼

electric excitation 解釋
電磁激勵
  • electric : adj. 1. 電的；帶電的；起電的，導電的，發電的，電動的。2. 令人激動的，緊張的，驚人的。3. 〈美口〉（樂曲的）用電吉他演奏的。n. 〈口語〉1. 帶電物體。2. 電動車輛。
  • excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
  1. Finally, because high - speed power solenoid valve is one of the most important executive parts in the electronic control diesel engine and the performances of diesel engine are strongly related to the solenoid valve, the response performance of the solenoid valve is investigated. the response performance of the solenoid is influenced by many factors, such as driving voltage, electric driving unit etc. in order to have high excitation voltage and in low maintaining voltage, a high - low voltage electric driving unit is designed, and in order to make the solenoid valve close more rapidly, an active free - wheeling circuit and a bootstrapping circuit are designed in the electric driving unit, too. in the high - low electric driving unit, high voltage and low voltage are supplied by the dc - dc device and by the accumulator respectively

    高速強力電磁閥的響應性能除了與閥本身的結構和材料有關外，與驅動電壓、驅動電路的設計密切相關，本文通過分析，首先開發出一種高低壓驅動電路，高壓電源是山升壓式dc - dc原理獲取的，低壓由蓄電池本身提供，實現高壓強激和低壓維持的功能，電路中採用有源續流電柴汕機中卜軌知介系統的設訓及其七川j敝略的叭究路進行續流，加誣了電磁閥的關閉速度；採用自舉吐路，降低了場效應管對驅動電壓的要求。
  2. Compared to the traditional converter, the new one can transform electric power from a static part to a rotary part without an electrocircuit connection, which makes the contactless power transform come true. one application of this converter is to supply a steady and regulable excitation circuit for synchronous generator by integrated its second winding with the motor while its primary winding is static. the thesis gives two methods of the rotating converter design paticullarly : flyback and fullbridge, and explains how the circuits are designed

    通過理論分析、模擬分析和實驗驗證，得出這兩種旋轉變換器都能進行感應電能傳輸，但它們的傳輸功率是不同的，反激式旋轉換器最大隻能傳輸幾十瓦功率的感應電能，因此只能用在感應電能傳輸較小的場合，或者信號傳輸的場合;而全橋式旋轉變換器能傳輸較大的功率，可用於電機的新型無刷勵磁方案中。
  3. At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened

    目前，牽引變壓器通常採用差動保護作為主保護，但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障，如故障電流與變壓器處于勵磁涌流、過勵磁， ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分，可能造成保護誤動或拒動，從而危及整個鐵道電氣化系統的安全運行。
  4. Test methods for analysis of lead in pvc taken from insulation and sheath of electric and optical fibre cables - method a : total lead content determination with flame excitation atomic absorption spectrometry - method b : qualitative analysis of lead by lead sulphide staining

    聚氯乙烯絕緣和護套光電纖維電纜鉛分析的試驗方法.方法a :用火焰激發原子吸收光譜測定法測定法含鉛總量測定.方法b :硫化鉛斑漬中鉛的定性分析
  5. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  6. Design the configuration parameter of the electromagnets using magnetic circuit theory, and check the temperature increase of the electromagnet. and design a power device using igbt with electric and electron theory. it can supply the electromagnets excitation current which changes regularly on a given rule

    對于彎扭矩檢測系統，運用應變儀的原理，在試件上的合適位置加貼應變片並組成惠斯登全橋差動電路，檢測出實際加載在試件上的彎矩和扭矩的大小。
  7. With the development of science and technology more attentions have been concentrated on the performance analysis of the following systems : variable speed drive system of ac machines with power electronics and control devices, power energy system composed of ac machines and power lines, electric machine system consisting of ac machines and excitation control devices

    隨著科學技術的發展，交流電機與電力電子及其控制裝置組成的調速傳動系統、交流電機與電力傳輸線組成的電能系統、交流電機與勵磁控制裝置組成的電機系統等的性能分析越來越受到關注。
  8. Life evaluation of class b insulation systems for series - excitation motor of electric tools

    電動工具用串勵電動機b級絕緣結構壽命的評定
  9. The company mainly produces high - tension and low - tension electric equipment, thyristors electrical machinery soft starter, automatic regulating silicon piles etc. it developed the technology with own patent adopting sun shape heat tube radiators with steam and water separated, and developed the integrated power module unit including thyristors and rectifiers with the technology. the products organization is novel, and it conducts heat rapidly and has solved the difficult problems of heat dissipation in generator excitation and exchange power

    公司主要生產高低壓成套電器低壓動態無功補償裝置晶閘管電機軟啟動自動調壓硅堆等產品。研製開發出了「日」字形汽水分離式熱管散熱，並利用該技術開發了晶閘管整流管一體化功率組件，結構新穎，傳熱迅速，為發電機勵磁交流調功等領域解決了器件散熱難題，產品的各項性能均處于國內外領先水平。
  10. Based on the high - low voltage electric driving unit, a new electric driving unit is built, which not only has the advantages of the high - low voltage electric driving unit but also has the advantage of obtaining high limiting current and low maintaining current easily. using self - excitation chopper circuit, the electric driving unit is good efficient, and the heat creating from the solenoid is small

    在高低壓驅動電路的基礎上又設計出一種高低壓自激斬波恆流驅動電路，該驅動電路除了具有高低壓驅動電路的功能外，還具有高壓限流和低壓維持電流獲取方便、能量利用更為合理、閥發熱更少等特點。
  11. In condusion, the research of rotating converter will promote the progress of the synchronous generator brushless excitation system and illuminate a new direction of the power electric converter

    為減少旋轉變壓器的散磁和漏磁，改善其性能，本文使用了新型的變壓器繞制方法?平面繞製法。
  12. First, we think periodicity and weakening surge of the nonlinear waveform is caused by self - excitation of the circuit. the electric field thresholds ( et ) and maintenance field ( es ) of lock - on are modulated by the ac electric field ; the nonlinear waveform became two main modes of trans - electron oscillator, namely delay polar domain mode and quenched dipole domain mode

    指出非線性波形周期性的減幅振蕩，是由於光電導開關所處電路自激振蕩形成的交流場對偶極疇的閾值電場e _ t和維持電場e _ s進行控制，從而形成轉移電子振蕩器的兩種主要工作模式：延遲偶極疇模式和猝滅偶極疇模式。
  13. Now the electrical power system is developing the big and gigantic scale dynamo on the base of saving the energy and reducing the wastage, but on the base of protecting environment, from now on the small and the middle water electric power will be developed, so the auto excitation regulator fit for the small electrical power has the great market potentialities

    雖然目前電力系統從節能降耗的角度正積極發展大型機組、巨型機組，但從積極發展小型電站和增強環保意識的國策上看，今後小水電、中小型熱電廠將大量發展，因此對高性能的實用於小型機組的自動勵磁調節器具有巨大的市場潛力。
  14. Though electric system is developing large - scale machine shop in the view of energy saving and reducing waste, small - scale hydraulic power plant and micromidi thermal - electric plant will largely develop because of the national policy of developing small - scale power plant and strengthening environmental protection idea. therefore, the high performance automatic excitation regulator which is applied in small - scale machine shop will have great market potential

    雖然目前電力系統從節能降耗的角度正積極發展大型機組、巨型機組，但從積極發展小型電站和增強環保意識的國策上看，今後小水電、中小型熱電廠將大量發展，因此對高性能的實用於小型機組的自動勵磁調節器具有巨大的市場潛力。
  15. Excitation controller is an important part in the excitation system. it ' s also important for safely and stably running of the electric power

    勵磁控制器是同步發電機勵磁系統的重要組成部分，對于電力系統的安全穩定運行起著十分重要的作用。
  16. Excellent excitation controller system not only could guarantee the generator running safely, offer qualify electric power but also could enhance the static stability and transient stability of the electric power system

    優良的勵磁控制系統不僅可以保證發電機安全可靠運行，為電網提供合格的電能，而且能夠有效地改善電力系統靜態與暫態穩定性。
  17. This dissertation firstly expounds the basic principle and electric structure of astg, and analyzes the principle of excitation control. because in actual system the excitation current is always the control target, the mathematical model with excitation - current controlled, which can be referenced by simulation of the same type system, is put forward

    本文首先介紹了異步化汽輪發電機的基本原理和電氣結構，深入分析了異步化汽輪發電機的勵磁控制原理，由於實際的勵磁裝置大多以勵磁電流為被控制量，提出了異步化汽輪發電機轉子勵磁電流控制的數學模型。
  18. Experiments of quantity of electric charge analysis and fault diagnosis by the device are carried out to show that it is not only able to run reliably, but also provide fine performance in excitation adjusting and online fault diagnosis

    最後，論文對該故障診斷裝置進行了電量測量精度實驗和故障診斷實驗。實驗結果表明，該裝置運行穩定，具備勵磁調節能力，且能夠有效對勵磁系統故障進行在線監測和診斷。
  19. On this paper, the development, the electric transmission system, hardware design of excitation control system and the control strategy of heavy - duty electrical wheels autonomous dump truck are introduced in firstly

    本文首先介紹了電動輪自卸車的發展現狀和電動輪自卸車的電氣傳動系統，然後對電動輪自卸車的勵磁控制系統的控制策略和硬體設計進行了闡述。
  20. In all kinds of power station, excitation system is key device which guarantees that synchronous generator works in normal state and increases stable level of electric network

    在各類電站中，勵磁系統是保證同步發電機正常工作，提高電網穩定水平的關鍵設備。
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