無效功率控制 的英文怎麼說

中文拼音 [wúxiàogōnglǜkòngzhì]
無效功率控制 英文
reactive power control
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 功 : 名詞1 （功勞） exploit; merit; meritorious service [deed]: 戰功 military exploits; 立功 render me...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 控 : 動詞1 （告發;控告） accuse; charge 2 （控制） control; dominate 3 （使容器口兒朝下 讓裏面的液體慢...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 無效 : of no avail; to no avail; invalid; null and void; nullity （合同等的）; in vain; unavailability; ...
  • 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
  1. The system realizes multiple serial port communication and management by way of multi - port serial board ( 2 ) use the database technology to manage and manipulate the physics information data of nc tool. the basic information management system, the nc program auto - create system, the simulation of cutter working and dnc communication program are integrated to one system. it realizes the offline programming and controls of no - punched tape, helps to cut short the supplementary cutting time and improves the efficiency of to program and machine tools and realizes the separation and seamless connection of program and manufacture

    本課題以硬體為輔助手段，以軟體為主要手段實現了以下功能：以串口擴展卡來實現網路中多臺數控機床的通信和管理；使用數據庫技術對數控機床的物理信息進行管理和操作，將數控機床基礎信息管理系統、 nc程序自動生成模塊、刀具加工軌跡模擬模塊和dnc通信介面模塊集成為一體，實現了數控加工的離線編程和數控系統的無帶控制，提高了編程效率、質量，縮短加工輔助時間，提高了機床的效率，既實現了編程和加工的分離，又達到它們之間的無縫連接。
  2. The result of long - term operation shows that the computer control system is practical and effective, it can run in the optimal state within a long duration to fully realize data collection and process, remote data transmission and vfvs constant injection control of pumps. it speeds up the automatic procedures of the seawater treatment process, really realizes the unmanned working, decreases the physical intensity to a large extent, improves the management, enhances the management level, avoids equipment wear down as much as possible, makes the seawater treatment efficient and lessens the cost of production

    長期的運行結果表明，該計算機控制系統的實施切實有效，既成功實現了對被檢測參數的數據採集與處理、遠傳以及注水泵機組的變頻調速恆壓注水控制，又提高了系統的自動化程序，真正實現了無人值班作業，在很大程度上降低了工作人員的勞動強度，極大的改善了現場的管理狀況，提高了生產管理水平，且有效避免了設備損耗，提高了水處理效率，降低了生產成本。
  3. Model ssj fourshuttled circular loom is specialized for manufacturing polypropylene cylindric sack, which covers little floor area and has the advanced electric control function. it is of high production efficiency, reasonable structure, little wear and tear, and longer usful life. the machine applies ac frequency - converter stepless speed regulating to lift electric machine, and shows the function of automatic halt when silk warp and weft are broken

    Ssj型四棱圓織機是生產聚丙型筒狀編織袋的專用機，佔地面積小，整機有先進的電器控制功能，生產效率高，結構合理，磨損小，壽命長，提升電機採用交流變頻無極調速，並具有經、緯絲斷絲后自動停機和顯示功能。
  4. However, the practice of this specific pattern also has some problems for the current press industry of the target market being ambiguous, the service offered not enough or considerate, the fund needed huge, the obtaining of readers " data difficult and etc. this thesis does not only make a comprehensive analysis and speculation of the membership pattern of distribution at the burgeoning stage, but illustrates the point that this kind of distribution mode is playing an increasingly more important part in the press industry, which means much theoretically and practically

    因會員制營銷具有的以雙向為原則進行溝通交流、以互利互惠為目標及較強信息控制功能的特性，報業會員制發行模式具有資格限制、促進編讀互動，適應讀者需求、調整讀者結構、培養讀者忠誠度、提高報社工作效率、增加報社廣告效益、與報社無形資產良性互動等特點和優勢，但由於目前報業會員制實施尚處「初級階段」 ，故而存在著目標市場不明確、服務深度不夠、宣傳力度較小、所需資金數額較大、客戶資料較難獲取等問題。
  5. Reactive power and voltage control in the distribution systems is very important. it makes the running of the systems more safe and stable and economical. it can also decrease the real power loss and improve the voltage

    在配電系統中進行無功電壓控制能夠有效地降低有功功率損耗、改善電壓水平，對系統的安全穩定經濟運行具有重要意義。
  6. The validity and superiority of all these are proved by use the parallel converter of novel upfc to implement reactive current compensation, zero sequence and negative sequence currents compensation, harmonic currents compensation and the mixed compensation of them. this thesis also studies that use novel upfc to implement two phases operating in high - voltage transmission lines by theory analyze and simulation testify

    提出了基於多電平變換器的廣義大功率有害電流補償的概念，提出了適合於它的多環定時滯環控制方案，通過用新型upfc的並聯變換器實現無功補償、零序和負序補償、諧波補償及它們的綜合補償來驗證了其有效性和優越性。
  7. It is equipped with 120w radio frequency laser producer and cti dynamic focusing, so there is smaller light point, and larger tange of marking. besides, its forceful laser power and unparalleled processing speed makes a accurate and vivid effect possible. it costs low and need no materials. the degree of the clearness and depth of marking can be controlled freely

    該機選配美國進口120w射頻激光器cti動態聚焦，光點尺寸更小打標范圍更大，加上強悍有力的激光功率，無與倫比的加工速度，實現了精確逼真的加工效果，加要成本低廉，無需耗材，標記清晰深淺度隨意控制，適用於多種你想加工的非金屬產品。
  8. An instance indicates that the proposed approach can find the optimal control more effectively than general approach and can minimize the reactive power through the transformer and the deviation of the secondary bus voltage. it also increases the margin of appropriate voltage in the second side

    模擬結果表明，所提演算法較傳統方法能更有效地搜索到最優控制策略，使主變中流過的無功功率及主變二次側電壓偏移最小，增加了二次側電壓合格裕度。
  9. Djw - wb, sjw - wb series of series of single - phase three - phase micro - computer superpower avr, it gathers advaned combinated roll compensation, no - touch of wsitch, and micro - motor controlhaving special function such as high efficiency, energysaving, quick adjustment, auto - balance of three phase, no machanical breakdown and carbon brush fret. especially, the avantages of timedelay, over - voltage and under - voltage protection absorbs more and more customers

    Wb系列單、三相微電腦無觸點大功率電力穩壓器是集先進的組合繞組補償方式和無觸點開關、微機控制交流穩壓技術於一體，具有高效工能、調節快速、三相自動平衡、無機械故障和碳刷磨損，並具有延時，過壓欠壓報警和保護功能。
  10. The system runs smoothly and presents good static and dynamic performance. also, we get a good tracking result of mppt

    實際研製的樣機經實驗測試，能夠控制直流無刷電機準確換相，系統運行穩定，同時最大功率跟蹤也取得了很好的跟蹤效果。
  11. The results show that uf is efficient for the removal of bacteria and turbidity with the 99 % removal of bacteria achieved and residual turbidity within 0. 02 ntu in the treated water ; the uf resulting toc and uv _ ( 254 ) removals of ha are 30 % and 40 % ; there is no obvious difference of ha removals between the uf membrane with a mwco of 10 kdaltons and the other one with a mwco of 1 kdaltons

    實驗結果表明，超濾具有良好的滅菌和除濁功能，細菌去除率達99以上，過濾出水的濁度能控制在0 . 02ntu以內，直接超濾對腐植酸toc去除率為30左右， uv254的去除率達40 ，截留分子量為10萬道爾頓和1萬道爾頓的兩種超濾膜對腐植酸的去除效果無明顯差別。
  12. Permanent magnet blushless direct current motor ( pmbldcm ) has been paid more attention in the past two decades by researchers in the motor and control system fields because of its excellent performance, for example, small cubage, great power density and high efficiency

    永磁無刷直流電動機體積小，功率密度高，控制性能好，效率很高，在工業、車輛、家電、計算機及軍事等諸多領域得到廣泛應用，尤其在電動車應用領域倍受青睞，是當前電動車電動機研發的熱點。
  13. First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented

    建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。
  14. The results of simulation show that the fuzzy control strategy in this paper is effective and feasible with good practicability. in add ition, electronic control unit of the pscvt system is designed

    模擬結果表明，裝有功率分流式汽車無級變速系統的汽車的燃油經濟性明顯優于傳統的手動變速檔汽車，模糊控制策略是可行和有效的。
  15. According to the characteristic of nine - area diagram of substation vol / var coordinated control, this system gives the defination of fuzzy sets and the degree of membership of input / output variables, and designs corresponding control rules. the results of simulation demonstrate the system can satisfy the constrains of the day - adjusting times of the switching of on - load transformer and paralleled compensation capacitors, and ensure voltage quality, reactive power basical balance. considering the var requirement in different load time period and the control demand in load saltation, a improved control scheme is provided. the results of simulation show the improved scheme can meet the demand of vol / var in different load time period, protect the wrong operation when either voltage or reactive power appears saltation, and decrease the times of regulation of the switching of on - load transformer and paralleled compensation capacitors finally, a background software module of substation vol / var coordinated control is designed, based on the supervisory control and data acquisition system of substation

    模擬結果證明該系統能在各種負荷條件下確保電壓合格和無功基本平衡，且能滿足變電站對有載調壓變壓器分接頭日調節次數和並聯補償電容器組的日投切次數的限制。通過考慮不同負荷時段對無功功率的需求和負荷突變情況下的控制要求，對上述模糊控制策略進行了改進，模擬結果證明改進后的控制策略能滿足不同負荷時段對電壓和無功的要求、抑制電壓或無功突變情況下的誤動作，且有效地減少了有載調壓變壓器分接頭和並聯補償電容器組的調節次數。最後基於變電站scada系統設計了一后臺電壓無功綜合控制軟體模塊。
  16. It is based on umc 0. 6 m bcd process. a built - in power mosfet with low on - resistance and a lossless current sensing circuit on chip provide fast and precise current mode control. furthermore, the whole losses decrease and high efficiency up to 90 % can be obtained

    它採用umc0 . 6 mbcd工藝製程，利用內置的低導通電阻功率mosfet和內置的無損耗電流感應電路實現了快速精確的電流模式控制，同時也降低了功耗，提高了轉換效率，典型的效率可達90 % 。
  17. Svc ( tcr ) is adopted reactor in series with thyristor controlled by trigger to absorb reactive power, at the same time, equipped with harmonic filter in order to mitigate harmonic

    Tcr靜止型動態無功補償裝置通過對串聯于電抗器迴路上的可控硅電路實施有效控制從而達到控制電抗器吸收的無功功率，同時採用濾波器支路進行諧波的綜合治理。
  18. In chapter four, the project techniques of harmonic filter and reactive power compensation for guixi smelter were firstly discussed ; based on the harmonic condition of guixi smelter, the key techniques of a new hybrid active power filter with high capacity for harmonic filter and reactive power compensation were proposed ; then the designs of main configuration, output filter, harmonic detection and analysis subsystem, and the controller based on dsp have been discussed. application results of the hybrid active power filter have confirmed the feasibility of the integrated compensation system

    第四章討論了貴冶電網諧波治理和無功補償的工程實現技術，介紹了貴冶電網諧波的現狀，分析了貴冶電網諧波超過國標的情況，提出了一種新型大功率混合型有源電力濾波器的應用方案，討論了系統主電路設計，輸出濾波器的設計，諧波檢測和分析子系統的設計，基於dsp數字晶元的控制器設計等關鍵技術，並給出了混合型有源電力濾波器投運后，改善電網諧波的情況，表明了論文中所給出的設計方案和工程實現技術獲得良好的工程應用效果。
  19. For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc. the full report method has redundancy report information, and its real - time performance is bad, multichannel report is introduced to improve the real - time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2. in order to meet the requirements of making the dynamic simulation of trunking group system, the ms ’ s random move equation is brought forward, the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3. the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control ‘ s performance is greatly improved

    全匯報方法存在冗餘的匯報信息，而且實時性較差，為了改善實時性提出了多通道的匯報方式，為了改善冗餘匯報而提出了篩選法，最後介紹的碰撞法在減少冗餘信息的同時又提高了實時性;二、為了集群功率控制動態模擬的需要，提出了移動臺的隨機運動方程，進行了有關移動臺的分佈模擬，建立了綜合的通道模型;三、希望克服延時和跟蹤復雜網路環境變化，提出了功率控制的智能預測模型，通過智能預測模型可以改善功率控制的性能，著重介紹了採用神經網路的方法實現智能預測的通用模型，從而跟蹤復雜多變的無線環境，諸如慢衰落及快衰落（包括多徑衰落、多普勒效應所引起的衰落）等網路特徵，達到預測功率需求;四、採用二級正交碼和智能天線（空分多址）的方法進行組內用戶的識別，改進功率控制效果;五、話權用戶的前向和反向功率控制方法;六、對引入gota的cdma系統提出了復合容量表示方法，並作容量分析，探討有關gota系統的qos問題。
  20. When we use the conventional switching - table, the reactive power of system has uncontrollable region, and the input current is affected also

    由於傳統的開關狀態表是引起無功功率控制效果差的主要原因，所以提出了改造開關狀態表的方法。
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