dc chopper 中文意思是什麼

dc chopper 解釋
直流斬波器
  • 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...
  • chopper : n 1 切者，砍者，剁者；伐木人。2 〈美俚〉驗票員。3 斧子；屠刀，大砍刀；切碎機。4 【電學】斬波器；...
  1. A design adding a dc chopper after the triphase rectification was given to reduce the peak of the pulse of voltage, aiming at the characteristics that the magnitude of the rated voltage of permanent magnet synchronous motor ( pmsm ) is far below that of the power supply, also the electric parameters of the devices were given

    針對專用永磁同步電機額定電壓大大低於電網電壓這一特點，為降低電機上承受的峰值脈沖電壓，設計了在三相整流之後增加一級直流斬波器並給出了相應的電氣參數。
  2. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  3. This paper select the series - resonant inverter because it is more suited to high frequency power supply and it will be easy to enhance power capacity and enable the power supply to work on higher frequency if power is regulated in the rectifier. so uncontrolled rectifier and buck chopper constitute dc circuit is selected as rectifier circuit

    並分析了感應加熱電源的各種調功方式，在對比幾種功率調節方式的基礎上，得出在整流側調功有利於高頻感應加熱電源頻率和功率的提高，選擇了不控整流加斬波器調壓作為研究對象。
  4. Two - quadrant current chopper control for brushless dc motor

    電流型兩象限斬波器控制的無刷直流電動機
  5. The high frequency inverter power can invert 75 - 130 volt vibrating dc voltage which come from battery charge into 110 volt, 20khz ac voltage. the control of high frequency inverter power consists of two parts : chopper control and inverter control

    給出了直流斬波電路及全橋逆變電路的工作原理，此高頻逆變電源可將75 130v的蓄電池直流電壓逆變為110v ， 20khz的交流電壓。
  6. The result shows that, when the full - bridge power converter is joined with boost / buck dc chopper in parallel, it can serve a dc voltage of over 340v and a power of 800w, meanwhile, as output voltage of the fuel cells changes due to loadings, the sliding - mode controller can cause more rapid responses and robustness to the dc bus voltage source

    實驗結果顯示，本論文之全橋式功率轉換器與升壓/降壓直流截波器並聯供電時，輸出電壓可達340v以上，輸出功率約為800w ，同時，當燃料電池之輸出電壓因負載而改變時，本論文所提出之滑動模式控制器能使直流鏈電壓具有較快速的響應及強健性。
  7. 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。
  8. Chopper control can change 75 - 130 volt vibrating dc voltage into 70 volt dc voltage and inverter control can invert the dc voltage into 70 volt, 20khz ac voltage, at last, from transformer we can get 110 volt, 20khz ac voltage

    斬波控制可將75 130v波動的蓄電池直流電壓變成70v的直流電壓。逆變控制可將此直流電壓逆變為70v 、 20khz的交流電壓，最後經變壓器得到110v 、 20khz的交流電壓。
  9. The fuzzy logic controller designed in this study determines the required angular used in the dc chopper control based on motor speed error and its change

    設計的模糊控制器以電機的轉速偏差及轉速偏差率為輸入，輸出量用於控制斬波調速時的導通角。
  10. The detecting techniques of harmful currents, the modulation methods of novel upfc and the balancing control of capacitors voltage on dc link are studied thoroughly. in order to be fit for three - phase four - wire system, the method of balancing control using chopper presented in literature [ 29 ] is mended

    分析了零序和負序電流對新型upfc直流側電容電壓的不同影響，對文獻[ 29 ]提出的傳統upfc的直流側各電容電壓的均衡控制方法進行了仔細研究，提出了採用b型直流斬波器來控制新型upfc的直流側電容電壓的新方法。
  11. This paper mainly designs a novel zero - voltage - soft ( zvs ) switching dc / dc chopper and validate on experiment which could be have abroad application in maglev, that is based on the study object of low and middle speed electromagnetic - suspension ( ems ) maglev

    本文以中低速磁懸浮列車為課題研究背景，設計並試驗驗證了一種可以廣泛應用於磁懸浮列車的新型零電壓軟開關dc / dc斬波器。
  12. Based on the traditional chopper, in view of the characteristics of the boost - chopper for providing the zvs switching condition, then, we have a novel zvs switching dc / dc chopper. this paper analyzes the characteristics of zvs switching chopper, and introduces the design of the basic parts of the chopper

    在傳統的h -橋斬波器的基礎上，利用boost斬波器的輸出特性，來構造零電壓軟開關的條件，這樣就組建了一種新型的零電壓軟開關dc / dc斬波器。
分享友人
分享到 Line

分享到臉書