無變壓器電源 的英文怎麼說

中文拼音 [wúbiànyāqìdiànyuán]
無變壓器電源 英文
non-transformer power supply
  • 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...
  • 壓 : 壓構詞成分。
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 源 : 名詞1. （水流起頭的地方） source （of a river）; fountainhead 2. （來源） source; cause 3. （姓氏） a surname
  • 電源 : source; current source; electric source; power pack; power supply; power source; source of power ...
  1. Drop passives : matching transformers 75 ohm to 300 ohm

    無源電壓降:匹配變壓器75ohm到300ohm
  2. This system consists of a full bridge pwm ( pulse width modulation ) regenerative rectifier or so - called vsc ( voltage source converter ) that connected to pcc ( point of common connection ) at the power utility grid through a passive interface circuitry

    這種系統包括一個pwm全橋可逆整流器或者所謂的電壓源變換器，通過無源電路介面與電網的pcc點（公共連接點）相連。
  3. Gb1094. 5 - 85 power transformers part 5 ability to withstand short circuit only applies to power transformers, not to balanced transformers. if short - circuit test on balanced transformers can be performed by means of single phase supply instead of three phase supply, and other special transformers can also be done in this way, so it is very significant to improve test capacity of transformer laboratory in our country

    變壓器的短路強度只能通過短路試驗來驗證，國家標準gb1094 . 5 - 1985 《電力變壓器第5部分承受短路的能力》只適用於電力變壓器，對平衡變壓器等特殊變壓器並無具體規定，對于平衡變壓器，如果可以用單相電源預先短路法模擬三相電源的短路試驗，那麼其它特種變壓器的短路試驗也可以參照進行，這對提高我國變壓器試驗室的試驗能力具有重要意義。
  4. While working in offline ( no pc ) mode, additionally to normal transducer, it has soft - startup function and fast - stop function. and the input of frequency and voltage - coefficient is optional. while working in online mode, additionally to working in offline mode, it can process, display, save and load waveform, which is specialty of computer

    脫機工作（無pc ）時，它除具有一般變頻器功能外，還具有軟啟動功能、頻率和電壓輸入源可選、急停功能等；在聯機工作時，除具有脫機工作的全部功能外，還具有計算機特有的圖形處理、顯示、存取能力，包括瞬態波形、各種參數動態過程曲線等。
  5. A novel high - power pollution - free smps is presented in this paper, which accomplishes simultaneously the goal of soft - switching pwm, the input / output isolation, the output voltage regulation and three - phase pfc with a single - stage power processor and simple pseudo - phase - shift control circuit. therefore, compared with the normal two - stage system, the single - stage power supply has simpler structure, lower cost, higher efficiency and easier to control. the proposed smps can be used in the three - phase power system, and can output high power over kw - order and input / output ( i / o ) isolation dc power supply

    本文提出的新型無污染大功率開關電源正是採用三相三線制輸入電源，利用單級偽相移零電壓零電流開關脈寬調制（ pps - zvzcs - pwm ）全橋變換器完，成功率因數校正（ pfc ）和輸出電壓快速調節、隔離的雙重功能，並且該變換器開關管在零電壓或零電流下通斷，顯著的減小了emi 。
  6. Because of the clamping capacitor and the interleaved structure, it has some good features compared with other flyback converters, such as : the topology is simple and can be realized easily ; the voltage spike of the power switch is availably restrained and without leakage - inductance energy loss ; the ripple of the input and output current is reduced, correspondingly, the volume and weight of the output and input filter is also significantly reduced

    由於箝位電容的加入，相對于其他類型的反激式變換器電路，該拓撲具有一些獨特的優點:電路結構簡單且易於實現;無需另加輔助開關管，實現了開關管的有源箝位，抑制了開關管的電壓尖峰;提高了輸入、輸出電流的脈動頻率，減小了輸入及輸出濾波器體積。
  7. The basic software consists of topology analysis, on - line load flow computation, state estimator, security analysis, dispatchers training simulator, short circuit current computation, and voltage / reactive power optimize, etc. the derived softwares consist of load control, capacitor optimizer configuration, transformer and feeder load distribution, impedance computation of generator, etc. network analysis software is powerful dispatch tool, though witch the current state of the power system can be realize, then improve the security and economic potential

    Dms網路分析的基本軟體有：網路結線分析、潮流計算、狀態估計、負荷預報、短路電流計算、電壓無功優化等。派生軟體有：負荷控制、電容器優化配置、變壓器與饋線負荷分配、電源阻抗計算等。網路分析軟體是有力的調度工具，通過它可以了解和掌握當前的運行狀態，從而挖掘安全和經濟方面的巨大潛力。
  8. To put into operation a large amount of non - linear load, make in harmony wave of rural power grids serious becoming in pollution, pass to rural local electric wire netting main in harmony analysis of wave source, put forward in order to restrain from insert rural power grids in harmony wave source voltage total in harmony wave distortion rate and the containing rate change last device number pulsating for increase of goal, increase the pulse of the current change device and install light specified value electricity active wave filter mix with passive wave filter near the harmonics source to control the wave in harmony

    摘要大量非線性負荷的投運，使農村電網的諧波污染日趨嚴重，通過對農村地方電網主要諧波源的分析，最終提出了以限制接入農村電網的諧波源的電壓總諧波畸變率和各次諧波電壓含有率為目標的增加換流裝置脈動數，以及在諧波源附近裝設小額定值的電力有源濾波器配以無源濾波器的混合型電力濾波方式，以進行諧波治理。
  9. Many practical factors, such as effects of line fuses protection, disconnected switches, scheduled maintenance, spare electrical source, spare transformers in distribution system, are considered in the assessment arithmetic. in the assessment, it is more practical that low - voltage power system is equivalent to an element on the lateral section of mid - voltage system. especially, the minimal cut - sets are divided into direct cuts and indirect cuts, which makes the effects of elements in cuts on system more legible and exact

    演算法考慮了分支線熔斷器保護、隔離開關、計劃檢修、備用電源、有無備用變壓器的影響，將低壓系統等效為中壓系統分支饋線上的一個等效元件進行評估，使得該方法更符合實際，特別是，將最小割集分為直接割集和間接割集，使割集元件的影響更加清晰準確，並以c + +語言編制了計算軟體。
  10. Its being used can form high efficiency insulated switching power supply without using utility power transformer. the switching power ic is selected firstly in the design of high power switching power supply, precision switching power supply, application specific switching power supply and so on in the world, which has been making switching power supply short, small, light and thin the control techniques of dc - dc switching converters are completely described and analyzed

    單片開關電源管理集成電路具有高集成度、高性價比、簡單外圍電路、優越性能指標等優點，能構成高效率無工頻變壓器的隔離式開關電源，目前已成為國際上開發中、小功率開關電源、精密開關電源、專用開關電源以及開關電源模塊的優選集成電路，使得開關電源正朝著短、小、輕、薄的方向發展。
  11. Speedy group ( hk ) limited was founded in 2004, specializing in rare electronic components, transformer, adapter and switching power supply distribution, we ' ve been the world renown electronic components distributor with many years development, especially taking a lead position on adapter, power supply and passive components ( tantalum capacitance, capacitance and inductance ), there are great supply for clients

    鴻源集團成立於2004年，專注于緊缺電子元件的分銷業務，經過多年的努力，現已發展成為世界知名的電子元件分銷商，特別在無源元件（鉭電容、電容、電感）和電子配件（開關電源，變壓器，電源適配器等）佔有一定的優勢，並庫存大量現貨。
  12. The forerunner of teco sa was taian electric, which was founded in march 1969 and merged with teco in oct 2003. ever since its establishment, sa never stops making contribution towards the industrial automation technology. sas products include ac dc motor controls, molded - case circuit breakers, high low voltage electric material, engines, generators, switchgears, ac dc frequency inverters, programmable logic controllers and servo controllers

    電控事業部的前身為臺安電機，自1969年3月創立至2003年10月與東元合併迄今，一直秉持著穩健踏實的態度，以電磁開關無熔線斷路器高中低壓配電器材引擎發電機組配電盤變頻器可程式控制器及伺服控制器等產品，為工業發展奉獻心力，滿足最基礎的用電安全，並提供整體性的自動化服務，符合節約能源的世界性潮流。
  13. The main ideas of the thesis and the contributions to the resonant dc - link area are also listed in this chapter. a novel control strategy for the two - amplitude actively clamped resonant dc - link is proposed in chapter ii. it neglects the bus short circuit time adjuster and stabilizes the clamping voltage by a pi regulator so that the obtained link frequency is improved and the link losses are greatly reduced

    第二章針對雙幅控制技術在單相橋式電壓源逆變器中的應用為範例進行研究，提出了直流母線無短路控制和通過pi調節環穩定箝位電壓的雙幅諧振控制策略，進一步提高了母線振蕩頻率，減少了直流環節損耗。
  14. This paper put forward the realization method of a kind of multi - function general use inverter system which added other functions based on the independent sine wave inverter, it not only can be used as independent inverter power supply but can be used as an in - support mode ups which realize synchronous with the phase of power grid voltage and realize to switch with power grid mutually, it also can realize three phase ac output by the combination of three synchronous inverters, experiment proved it in this way has a stronger ability of resisting three phase unbalance load

    本文提出了一種基於獨立正弦波逆變器的功能之上復合其他功能而成的多功能通用逆變電源系統的實現方法，此系統不僅可以作為獨立逆變電源使用，還可以與電網電壓的相位同步，作為后備式正弦波ups使用，在逆變電源和電網的相互切換時能做到對負載無影響，同時還可以由三臺逆變器進行組合自同步實現三相對稱交流輸出，實驗證明這種方式具有較強的抗三相不平衡負載的能力。
  15. However these converters become more complicate. phase - shift zvs technique has been used in bidirectional dc / dc converters since it can realize zvs for all switches without auxiliary switches. however when the amplitude of input voltage is not matched with that of output voltage, the current stresses and rms currents of the converters become higher, in addition the converters can not achieve zvs under light - load condition

    諧振、準諧振或多諧振技術方案，變換器的電壓電流應力較高，變頻控制增加了濾波器設計的難度；能量緩沖吸收電路或有源鉗位電路方案，由於需要增加多個額外輔助元件，增加了變換器的復雜性；全橋相移技術方案，由於主電路無需增加額外元件，只需利用相移控制，即可實現軟開關，因此引起關注。
  16. Results of analysis indicate the self - charge ability of active vsi power filters without additional equipment under start - up process and their ability of maintaining the average voltage on dc capacitor in steady state

    分析結果表明，無需附加任何充電環節或裝置，電壓逆變器型有源電力濾波器就能自動完成對儲能電容器的初始充電過程，然後自動過渡到穩定工作狀態，並在穩態中維持儲能電容器上的電壓平均值不變。
  17. With the rapid advancement of process and technology, especially the realization of on - chip passive elements such as inductors and varactors, the on - chip implementation of voltage - controlled oscillators ( vcos ) which are necessary in wireless transceivers has become easy

    在工藝技術的飛速進步下，尤其是電感和變容管等無源器件片上實現問題的解決，壓控振蕩器已經可以實現單片集成，這對降低收發機的成本十分關鍵。
  18. Different type active power filters can compensate dynamic harmonic of dynamic load electrical current and the volt

    不同類型的有源電網濾波器能對變化的負載電流進行動態諧波和無功補償以及電壓補償。
  19. Non - transformer power supply

    無變壓器電源
  20. According to the characters of the power harmonic, a kind of self - adaptive harmonic detection method based on in - phase correlation filtering is presented, which is clear and concise in thinking. by this method the low - pass filter can be designed easily, and by using the multiresolution and self - adaptive technique the difficulties of harmonic detection with low variable fundamental frequency and no voltage reference are worked out, which contributes much to the implementation of harmonic suppression

    該方法思路清晰、簡潔，並能方便有源濾波器（ apf ）中低通濾波器設計，同時採用多解析度和自適應濾波方法，解決了基波頻率低且變化、無明顯電壓基準可尋的復雜供電系統諧波檢測的難題，為諧波抑制的實施奠定了基礎。
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