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zero voltage造句

"zero voltage"是什么意思   

例句與造句

  1. On binary - ended forward converter with constant frequency zero voltage transition
    恒頻零電壓轉(zhuǎn)換雙端正激變換器研究
  2. Zero voltage resistance
    零壓電阻
  3. At the end , a half - bridge dc / dc transformer with zero voltage switching ( zvs ) is presented
    最后本文研究了一種半橋軟開關(guān)直流變壓器電路。
  4. Finally , the operation principle of three - level shift phase pwm control with zero voltage is validated by the simulation analyze and the debugging experiment of 230v / 10a sample device
    最后,通過仿真分析以及對(duì)230v / 10a樣機(jī)的調(diào)試實(shí)驗(yàn),驗(yàn)證了零電壓三電平移相控制pwm三電平直流變換器的工作原理。
  5. In all interleaving two - transistor forward switches , zero voltage switching can be obtained which can apparently improve the power density . however the isolated boost converters need to resolve two problems
    但是隔離boost變換器需要重點(diǎn)解決兩個(gè)問題: 1 )減小功率開關(guān)關(guān)斷時(shí)兩端浪涌電壓; 2 )隔離boost變換器的起動(dòng)。
  6. It's difficult to find zero voltage in a sentence. 用zero voltage造句挺難的
  7. On the detailed analysis of pmsm dtc principle , the function of zero voltage vector and the choice method of voltage vector in ev driving are proposed . restricted condition about stator flux linkage under dtc is analyzed
    在詳細(xì)分析dtc應(yīng)用于pmsm的基本原理基礎(chǔ)上,研究了零電壓矢量在pmsmdtc中的作用并提出電動(dòng)汽車用pmsm電壓空間矢量的選擇方法。
  8. 2 . we present a novel de - rail parallel resonant zero voltage transition three - phase pwm voltage - source inverter which is based on resonant zero voltage ( zero current ) transition technique ; at the same time it ' s efficiency analysis and simulation result are presented . 3
    把諧振過渡軟開關(guān)技術(shù)應(yīng)用于直流環(huán)節(jié)逆變器得到了一種新的諧振過渡軟開關(guān)逆變器;論文對(duì)該新型諧振過渡軟開關(guān)逆變器進(jìn)行了工作原理、效率分析并對(duì)主電路進(jìn)行了仿真。
  9. 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(guān)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(shí)現(xiàn)和占空比的丟失,并設(shè)計(jì)了各自的控制電路和保護(hù)電路。
  10. Traditional direct torque control uses two value torque regulator which makes zero voltage vector work long and make flux shape bad seriously and makes response time long when the speed of induction motor is very low or drops down quickly . in order to solve this problem the thesis puts forward a new way to use three - value torque regulator , when the motor speed is very low or drops down quickly , the contrary voltage vector is used instead of zero voltage vector and the between the stator flux and rotor flux is reduced quickly so that torque is reduced quickly and response time becomes shorter
    為此,本論文提出三點(diǎn)式轉(zhuǎn)矩調(diào)節(jié),這樣當(dāng)電機(jī)低速運(yùn)轉(zhuǎn)或給定轉(zhuǎn)速突降時(shí),不是加零電壓矢量,而是加反方向的電壓矢量,使定子磁鏈與轉(zhuǎn)子磁鏈之間的夾角迅速減小,從而使電磁轉(zhuǎn)矩也迅速減小,大大減小了調(diào)速時(shí)間,同時(shí)磁鏈值仍然保持基本恒定,輸出比較穩(wěn)定的電磁轉(zhuǎn)矩,這在電機(jī)制動(dòng)過程中非常有用。
  11. A topology of asymmetrical half bridge soft switching is researched in this thesis , which has inherent zero voltage switching ( zvs ) capability and thus potentially higher efficiency by its resonating of the leakage of power transformer with the parasitic capacitances of the power mosft switches , whereas it does n ' t raise the expense of the converter these studies in the thesis have been done as follows : ( 1 ) the topology of asymmetrical half bridge is introduced , and its principle and the relation of duty cycle and input voltage and output voltage discussed , the method of eliminating the deflection magnetism is also brought forward
    雖然,軟開關(guān)技術(shù)能夠?qū)崿F(xiàn)功率變換器的小型化、模塊化等,但是,電路變得更加復(fù)雜,使得中小功率的變換器的成本增加,往往不利于商業(yè)競(jìng)爭(zhēng)。本文研究了一種零電壓的不對(duì)稱半橋拓?fù)浣Y(jié)構(gòu),它可以在不增加電路成本的基礎(chǔ)上,利用電路自身的特點(diǎn),實(shí)現(xiàn)軟開關(guān)。本文所做的主要工作如下: ( 1 )對(duì)不對(duì)稱半橋主電路工作原理進(jìn)行分析,給出了占空比與輸出電壓、輸入電壓的關(guān)系以及消除變壓器偏磁的方法。
  12. The main circuit of the design in this article we used is fb zvs pwm dc / dc converter , full bridge zero voltage switching pulse width modulation dc / dc converter , which is a full bridge circuit composed of four power switches using resonance to implement zero voltage when turning - on or turning - off
    本文設(shè)計(jì)的通信電源充電模塊的主電路采用的是fbzvspwmdc dc變換器,即全橋零電壓開關(guān)脈沖寬度調(diào)制的直流變換器,它是由4個(gè)功率開關(guān)管組成的全橋電路,利用諧振使每個(gè)開關(guān)管在零電壓的條件下完成導(dǎo)通和關(guān)斷。
  13. The function of zero voltage vectors in pmsm dtc is different from that of asynchronous motor . the difference is discussed in the paper and a novel pmsm dtc system based on the fuzzy distribution of zero voltage vector strategy is proposed at last . simulation results show that the new method decreases the torque ripple after using zero voltage vectors properly
    論文分析了零電壓矢量在永磁同步電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)中的作用,并提出了一種基于模糊零電壓矢量分配策略的永磁同步電機(jī)直接轉(zhuǎn)矩控制方法,仿真結(jié)果表明該方法有效地利用零電壓矢量達(dá)到了減小轉(zhuǎn)矩脈動(dòng)的目的。
  14. Conventional hard switching technology has several flaws below : on and off loss , inductive off , capacitive on and diode recover problems . comparing with it , the loss of on and off decreases markedly , as the switches are on and off in zero voltage or zero current cases . and also the size of converter becomes smaller because of the higher of switching frequency
    傳統(tǒng)硬開關(guān)技術(shù)由于存在開通關(guān)斷損耗大、感性關(guān)斷、容性開通、二極管反向恢復(fù)等問題,與之相比,軟開關(guān)技術(shù)在零電壓或零電流條件下導(dǎo)通,開關(guān)損耗明顯降低,加上開關(guān)頻率的提高使得變換器的體積得以減小,這也是軟開關(guān)技術(shù)受到青睞的原因。
  15. When the motorcycle is braking or slowing down , the kinetic and / or potential energy is fed back to the battery , so the running distance can be extended and the energy efficiency is improved . an asynchronous motor is employed in this new system which can overcome the traditional dc drive system bugs and to reduce the cost and maintenance . in addition , the switches of dc / dc converter switch under zero current and zero voltage conditions , which can also reduce the switch losses , electro magnetic interference ( emi ) and prolong its life
    該系統(tǒng)在功能上實(shí)現(xiàn)了車輛剎車減速或下坡制動(dòng)時(shí)能量的回饋,達(dá)到節(jié)能、提高能量使用效率和增加車輛行駛距離的目的;采用交流異步電機(jī),克服了傳統(tǒng)直流驅(qū)動(dòng)系統(tǒng)的諸多缺陷,降低了成本,減少了維護(hù);采用zczvs技術(shù),降低了電磁干擾和損耗,提高了效率;另外,在逆變主電路中采用ipm模塊,簡(jiǎn)化了系統(tǒng)結(jié)構(gòu),節(jié)約了空間,提高了整個(gè)系統(tǒng)的可靠性和經(jīng)濟(jì)性。
  16. A novel cycloconverter - rype three - phase hf link inverter topology for soft - switching based on phase - shifted full - bridge mode is proposed , whose main advantages are as follows : under the conditions of d < i < and overlap - d , the switches of the leading leg are turned on at zvs and the switches of the lagging leg are turned off at zcs and all switches of the cycloconverter circuit are commutated in the overlapping mode in the interval of zero voltage , which makes the circuit realize soft switching to the utmost extent and reliably solve the problem of peak voltage caused by the storing energy of leakage inductance of hf transformer
    論文提出一種新型移相全橋軟開關(guān)周波變流型三相高頻鏈逆變器,電路的主要優(yōu)點(diǎn)是:前級(jí)移相全橋的移相角控制在_ d _ i和_ ( overlap ) - _ d條件下,超前橋臂零電壓開通,滯后橋臂零電流關(guān)斷,并使周波變流器所有開關(guān)在零電壓期間重疊換相,使整機(jī)開關(guān)最大程度地實(shí)現(xiàn)了軟開關(guān),并可靠解決了高頻變壓器漏感儲(chǔ)能引起的電壓尖峰問題。
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