dc-dc converters 中文意思是什麼

dc-dc converters 解釋
電源
  • dc : ＝1 direct current 直流電：a DC generator 直流發電機。2 District of Columbia 哥倫比亞特區〈美國首...
  • converters : 直接成條機
  1. Multi - channel dc dc converters inductors transformers

    磁性元件- smt電感器變壓器
  2. The main work of this thesis is theoretical and experimental research on non - isolated single - end three - level dc / dc converters with passive lossless soft switching. a 1kw three - level buck converter with passive soft switching is designed to verify the research

    本文的主要工作是對無源軟開關三電平非隔離dc dc變換電路的理論與實踐研究，設計並實現了一臺功率1kw的無源軟開關三電平buck變換器。
  3. The temperature range is - 30 ~ 80. the topology of the step - up dc / dc converters and its basic principle is first analyzed in this thesis. then based on the conventional pfm control scheme, a discrete pulse frequency modulation is presented and the state space average model related to the ccm ( continue current mode ) and dcm is established

    然後在傳統的脈沖頻率調制方式的基礎上，分析了一種離散脈沖頻率調制方式，並建立了這種調制方式下升壓型dc / dc變換器在電流連續（ ccm ）工作模式和電流斷續（ dcm ）工作模式的狀態空間平均模型。
  4. A neural network control method for dc dc converters

    變換器的一種神經網路控制方法
  5. Because the switches suffer only the half of the input voltage, the three - level ( tl ) converters have been attracting more and more attentions. this thesis proposes a family of zero - voltage - switching multi - resonant three - level dc / dc converters

    三電平變換器可以降低開關管的電壓應力，並且可以減小輸出濾波器（或儲能元件）的大小，近年來逐步成為電力電子技術的一個研究熱點。
  6. These topologies of inverters are composed of two bi - boost dc / dc converters, they are symmetry. so whole circuit turn into four - quadrant converters, we can control every power mosfet on or off. then we can get sine wave with direct current polarization at the left, at the same we also can get sine wave with direct current polarization phase contrast 180 compared of the left at the right

    這類逆變器由左右二個雙向boostdc / dc變換器構成，左右二邊是對稱的，所以整個電路構成了一個四象限變換器，我們可以恰當控制各功率管的開、關，使左邊的兩象限dc / dc變換器輸出一個帶直流偏置的正弦波，使右邊的兩象限dc / dc變換器輸出一個相差180度帶同樣直流偏置的正弦波形，這樣，負載zl上的電壓是左、右兩個dc / dc變換器電壓的差動輸出，正好可以消掉直流偏置，最終在負載r1上得到的就是正弦波。
  7. Bidirectional dc / dc converters will be widely used in applications such as dc uninterruptible power supplies, aerospace power systems, electric vehicles and advanced mobile generator sets

    為了實現直流功率的雙向傳輸，雙向dc dc變換器被應用在直流不停電電源系統、航天電源系統、電動汽車及移動發電系統等。
  8. In dc - dc converters above a few kilowatts, the zvs full - bridge ( fb ) converter is a preferred topology

    全橋直流變換器由於結構上的優勢在中大功率的開關電源中應用較多。
  9. The author puts forward the thought of analyzing bifurcation and chaos in dc / dc converters with the theories of nonlinear dynamics, and the thought of controlling nonlinear problems with linear controlling methods of modern control theory. chapter three ( research on bifurcation and chaos in pwm dc / dc converters ) first theoretically analyzes and emulates period - doubling bifurcation of pwm dc / dc converters with the " inverse " piecewise numerical emulation. then the author analyzes in detail the sampled - data model, the mathematical model, which is suitable to the nonlinear research of dc / dc converters

    第三章（ pwm型dc dc變換器中分岔與混沌的研究）首先採用「逆向」分段數值模擬法對pwm型dc dc變換器中的倍周期分岔進行了理論分析與數值模擬；接著詳細地分析了適合於dc dc變換器非線性研究的數學模型一采樣數據模型，提出了dc dc變換器中存在環面分岔與鞍結分岔的可能性；最後通過電路實驗驗證了在電路參數發生變化時， dc dc變換器經歷一系列的倍周期分岔通向混沌的演化過程，並對混沌態下dc dc變換器的輸出特性進行了分析與小結。
  10. The whole high power switch supply have four bidirectional dc / dc converters which are parallel connection. the theory of phase - shifted full - bridge zvs pwm dc / dc converter and the theory of push - pull boost converter are introduced. the methods of realize zvs ( zero voltage switching ) is studied in detail

    文中介紹了移相全橋式軟開關變換及推挽式dc dcboost變換的工作原理，分析了移相全橋zvs的實現和占空比的丟失，並設計了各自的控制電路和保護電路。
  11. Our company develops advanced function devices including hybrid integrated circuits, power integrated circuits and dc dc converters for communications equipment

    開發混合集成電路功率集成電路和通信器材用dc dc轉換器等高性能器件。
  12. A modified current - sensing technique for dc - dc converters

    調整器的一種改進型電流檢測技術
  13. In the end we have made a 50v / 10a full - bridge pwm dc / dc converters based on an improved circuit topology of full bridge phase shift zvs pwm converter. it can achieve zvs from no load to full load in virtue of an assistant commutation inductor

    最後，構造了一個改進的全橋移相zvsdc dc變換器拓撲，在此基礎上研製了50v 10a通訊用全橋移相開關電源，該電源藉助于輔助換流電感，在空載到額定負載范圍內均可實現zvs 。
  14. 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。
  15. Chaotic switching modulations generated from different chaos sequences introduce low - frequency output noise ripple : in the cpwm, cppm and ccfmvd, the output noise ripple introduced by henon map chaos sequences is smaller than chua ' s circuit chaos sequences ; in the ccfmfd, chua ' s circuit chaos sequences introduced smaller noise ripple. this clue to us that it is important to choose chaos sequences in applying chaotic modulation to dc / dc converters

    不同混沌調制信號對輸出紋波影響的分析結果表明： cppm 、 cpwm和ccfmvd模式下， henon映射混沌序列引入低頻噪聲紋波比蔡氏電路摘要混沌序列要小; ccfmfd模式下，蔡氏電路混沌序列引入的低頻紋波要小。這提示我們:在開關模式電源使用混沌調制控制時混沌序列的選擇也具有重要性。
  16. So analyzing chaos from the angle of linear theory and definiteness theory can not meet the increasing requirement to control performance of dc / dc converters

    因此，僅僅從線性論和確定論的角度去分析混沌已不能滿足對dc dc變換器控制性能日益提高的要求。
  17. 1. nizn ferrite was developed for using in mini high frequency dc - dc converters and inductors. we measured and analysed the parameters of the nizn ferrite, which we concern about when designing the dc - dc converter. 2. the low loss sample of nizn ferrite were chosen for design - optimization of the high frequency transformer. based on the relevant theoretical researches, the loss properties of the magnetic core material and winding were analyzed in this thesis

    因此，以nizn功率鐵氧體材料為開關電源芯材為基礎，並優化各種開關電源的設計已成為國際上的熱點和技術瓶頸，本論文正是以上述背景為研究目標而開展工作的，主要進行的工作和創新有: 1 .對研製的新型高頻低功耗的功率nizn材料進行參數的測試，並針對dc - dc變換器設計關心的參數對芯材特性進行了分析，選擇在特定頻率下，功耗較小的nizn材料磁芯樣品作為變壓器優化設計的預備磁芯。
  18. 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。
  19. Chapter four ( research on chaos control in pwm dc / dc converters ) first introduces the research background, purpose and physics mechanism of chaos control, as well as some basic problems which are worth attention in the design of chaos control system. secondly, the author discusses the basic principle of ogy method and problems that are worth attention in the circuit experiment. finally, based on modem control theory and ogy method, the author puts forward some chaos control schemes, conducts emulation and circuit experiment, and proves the feasibility of chaos control in dc / dc converters

    第四章（ pwm型dc dc變換器中混沌控制的研究）首先介紹了混沌控制的研究背景、混沌控制的目標與物理機理以及混沌控制系統設計中要注意的基本問題；其次，討論了ogy法的基本原理以及在電路實現中要注意的問題；最後，基於現代控制理論和ogy法，提出了幾種適合於dc dc變換器的混沌控制方法，進行了模擬與電路實驗，證實了dc dc變換器中混沌控制的可行性。
  20. In addition, some are approved by experimental results. this paper targets on the applications of mid - power range dc / dc converters, such as communication power supply and electrical system power supply. devices loss is calculated theoretically for each topology with actual devices in the same circuit conditions

    本文然後針對目前市場上中功率dc / dc變流器的主要應用場合，如通信電源、電力電源等，在相同的電路條件下，採用實際器件，對各個拓撲進行理論上的損耗分析比較，從理論上為各個應用場合選擇比較合適的拓撲。
分享友人
分享到 Line

分享到臉書