負輸入正輸出 的英文怎麼說

中文拼音 [fùshūrùzhēngshūchū]
負輸入正輸出 英文
negative input positive output
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 輸 : Ⅰ動詞1 （運輸; 運送） transport; convey 2 [書面語] （捐獻） contribute money; donate 3 （失敗） l...
  • 入 : Ⅰ動詞1 （進來或進去） enter 2 （參加） join; be admitted into; become a member of 3 （合乎） conf...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 輸入 : 1 （從外部送到內部） import 2 [電學] input; entry; entering; in fan; fan in; 輸入變壓器 input tra...
  • 輸出 : 1 （從內部送到外部） export 2 [電學] output; outcome; outlet; out fan; fanout; 輸出變壓器 output ...
  1. In this paper, a kind of output current feed - forward circuit is added into the input of the current loop. by adding this compensatory circuit, the output character of the inverter is improved greatly

    本文還研究了一種提高逆變器輸出電壓外特性的思路，通過將負載電流正反饋給逆變器的電流環輸入端，從而達到提高輸出電壓的外特性的目的。
  2. The pwm control of duty cycles acts as an electric transformer which regulates the amplitudes of equivalent input voltage and equivalent output voltage, so that both positive and negative amplitudes of equivalent input voltage are equal to those of equivalent output voltage

    對器件占空比的pwm調節，相當于在電路中加入一個電子變壓器，使得輸入方波電源和輸出方波電源的正負電壓幅值分別匹配。
  3. With the development of the electric power system, static - state reactive power compensators ca n ' t have met the requirements of the actual production and operation, and the trend to the fast and dynamic compensation for reactive power become greater and greater. since ertan hydroplant and 500kv transmission systems in sichuan power system have been operated, many power plants of load center are forced to halt during the high - water period, because the great deal of power is transmitted to far - distance load center. thus the load center loses voltage sustentation and the level of the system stabilization is debased greatly

    四川電網的二灘水電站和500kv輸變電系統投入運行后，由於二灘水電站的大量電力遠距離輸送至負荷中心，迫使負荷中心的火電機組在豐水期大量停機，使負荷中心失去電壓支撐，大大降低了電網的電壓穩定水平；同時，因為四川電網中的無功補償裝置全為靜態無功補償電容器（或電抗器） ，這些設備只能在系統正常運行狀態下起到無功補償和電壓支撐的作用，而在電網出現事故時，不但不能起到電壓支撐作用，反而會促使電網電壓崩潰事故的發生。
  4. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  5. Abstract : it has been discovered that the coke formed in ch4 coupling under plasma can be eliminated via pure h2 discharge in the system. eliminating coke under plasma with positive or negative high voltage in dc electric field has been compared with that in ac field. the elimination of coke takes place only on the negative of the two electrodes in dc field, while on both electrodes in ac field. the coke on the reactor walls can be eliminated with either positive or negative high voltage and in either dc or ac field. based on the experimental facts, hypotheses of the reaction mechanism are suggested. quantity of eliminating coke depends on diametrical ratio between reactor and the electrode, input power and electrode materials

    文摘:發現了等離子條件下甲烷偶聯反應中形成的積炭可以通過該體系中純氫氣放電而消除.將消除積炭使用直流電場的正高壓和負高壓與使用交流電場作了比較，發現直流電場中無論使用正高壓還是負高壓，只有陰極上的積炭可以被消除，而交流電場中兩極積炭均可被消除，反應器壁上的積炭在以上任何情況下均可被消除.基於實驗事實提出了機理假設.消除積炭的量與輸入功率、反應器對電極的直徑比以及電極材料有關
  6. Along with the development of power system, more and more generators and ehv transmission systems are put into operation. there come many new situations, such as the lengthening transmission distance, the heavier load, the increasing transient elements during the transient process. these new conditions influence the correct working of relay protections

    隨著電力系統的不斷發展，大容量發電機組和超高壓輸電系統的相繼投入運行，系統中出現了許多新的情況，如輸電距離增大、負荷加重、故障暫態過程中的暫態分量大大增加、持續時間變長等，這些情況對目前常用的各種繼電保護方法的正確動作會產生許多不利的影響，甚至不能正常運行。
  7. The results showed that there were 2380. 879 tons sediment - attached nitrogen, 10432. 959 tons soluble nitrogen, 40. 922 tons sediment - attached phosphorus and 295. 679 tons soluble phosphorus inputted into the qiandao lake per year. monthly inputted loading changed very strongly, the loading was interrelated positively with rainfall and 70 % of total pollutant was exported from the watershed during the april and september

    千島湖流域氮、磷非點源污染的月輸入負荷差異極大，氮磷污染物的輸出量與月降雨量成正比，降雨集中的4 9月份是每年的污染物輸出集中時期，氮、磷污染物輸出量佔全年總量的70以上。
  8. When the input voltage varies from 40v to 60v and the output side varies from no load to rated resistance load, the output voltage will vary within 1. 3 % with the thd of less than 2 % and the highest efficiency of 86. 3 %

    當輸入電壓變化、輸出從空載變化到額定阻性時，輸出電壓變化量小於1 . 3 ，正弦輸出電壓波形失真度小於2 ，變換效率最高為86 . 3 ，額定阻性負載時效率為84 . 4 。
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