移零電壓 的英文怎麼說
中文拼音 [yílíngdiànyā]
移零電壓
英文
zero shifting voltage-
A novel low mechanical hysteretic ceramic capacitive pressure transducer has been made, by using of ceramic sealing technology ; integrate circuit ( ic ) technology and thick film plane fixing circuit technology. this transducer is made of a deformable ceramic diaphragm and a ceramic base plate, between which has an air cavum. a coaxial gold electrode was fired onto the diaphragm and the base plate
本文利用新型陶瓷技術、集成電路技術和厚膜平面安裝電路技術,採用零力學滯后的陶瓷和陶瓷密封材料進行設計製造了一種非充液乾式的電容式壓力傳感器,該壓力傳感器由較厚的陶瓷基體和較薄的陶瓷膜片構成,中間形成一空氣介質腔,在基座和膜片之間內置同軸的雙電極,組成兩個電容,當膜片承受壓力時發生位移,使電容量產生變化,經後置處理電路直接轉換為可輸出的直流電壓信號。1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發,提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲,在調制系數0 . 1 m 0 . 5情況下,控制移相角按正弦規律變化,使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號,經過整流、濾波、低頻逆變,從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載,移相全橋具有超前橋臂零電壓開通,滯后橋臂或者零電壓開通( _ 0 )或者零電流關斷( _ 0 )的軟開關特性,而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。Phase - shifted zero - voltage - switching pwm full bridge converter can realize zvs for the power switches with the use of the leakage inductance of the transformer and the intrinsic capacitors of the power switches, so it is used widely for medium and high power applications
移相控制零電壓開關pwm全橋變換器利用變壓器的漏感和開關管的結電容可以實現開關管的零電壓開關,在中大功率的場合應用廣泛。The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter
該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起,有效地降低了電路的開關損耗和開關噪聲,為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時,能拓寬零電壓開關的范圍,使變換器在較寬的負載變化范圍內都能實現軟開關。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周波變流型三相高頻鏈逆變器,電路的主要優點是:前級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,滯后橋臂零電流關斷,並使周波變流器所有開關在零電壓期間重疊換相,使整機開關最大程度地實現了軟開關,並可靠解決了高頻變壓器漏感儲能引起的電壓尖峰問題。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 。The theory of phase - shifted full - bridge zvs pwm dc / dc converter circuit is studied and the phase - shifted controller uc3875 is used for phase - shifted control circuit
文中研究了移相全橋零電壓pwmdc dc變換器的工作原理,使用移相控制晶元uc3875設計了移相控制電路。In this thesis, the tradition phase - shift full - bridge zvs dc / dc converter are analyzed, and then a new dc / dc full - bridge converter employing switches clamping in secondary side of transformer is proposed, and the converter employing saturable inductor clamping are studied, and zvs ( zero - voltage - switching ) can be easily achieve by experiment validate
本文分析了一些傳統的移相全橋軟開關變換器,提出了開關管箝位dc dc全橋變換器拓撲方案,並對飽和電感器箝位dc dc全橋變換器進行了研究,並進行實驗驗證,從而解決了開關管的零電壓開關問題。Compared with phase - shift control, pwm plus phase - shift control can reduce the current stresses and rms currents of the converter. the loss of the converter can also decrease. lt is proved the converter can achieve zvs in larger load variation
與常規相移控制方式相比, pwm加相移控制方式能減小變換器的電流應力,減小通態損耗,同時也能拓寬零電壓開關的范圍,使變換器在較寬的負載變化范圍內都能實現軟開關。Firstly, the basic theory of full - bridge phase - shift zvs pwm converters are expatiated and another three kinds of circuits of full - bridge phase - shift zvs pwm converters are discussed. there are four kinds of problems which are emphasized : how to expand the zvs range ; how to reduce the circulation in the primary side of the transformer in order to minimize the on state losses ; how to decrease the loss of effective duty circle and how to eliminate the parasitic oscillation of the output rectifiers
本文首先分析了基本的全橋移相zvsdc dc變換器的工作原理,為解決滯后橋臂不易實現零電壓開關( zvs )的情況,討論了另外三種全橋移相zvsdc dc變換器的電路拓撲,重點分析並解決了四個方面的問題:如何擴大zvs的負載范圍;減小變壓器原邊環流,降低變換器系統通態損耗;減少變壓器次邊有效占空比丟失;消除輸出整流二極體的寄生振蕩。Among them, phase shifted ( ps ) full bridge ( fb ) zero - voltage - switched ( zvs ) pulse - width - modulated ( pwm ) dc / dc converter has strong competitive power in big power capacity fields. but it has some limitations such as smaller load range with zvs and larger circulation energy. the ps - fb - zvs - pwm dc / dc converter with a saturable inductor utilizes saturable inductor s critical saturable current characteristic and storage energy, to enlarge load range with zvs and improve output efficiency under light load
其中,移相控制零電壓開關脈寬調制dc / dc全橋變換器在大容量領域很有競爭力,但它具有實現零電壓開關負載范圍小,循環能量大等限制,帶飽和電感的移相控制零電壓開關全橋變換器利用飽和電感的臨界飽和電流特性及儲能,來擴大零電壓開關( zvs )的負載范圍,提高輕載時的輸出效率,具有非常重要的研究價值。It has very important research worth in this thesis, the ps - fb - zvs pwm dc / dc converter with a saturable inductor is deeply studied in detail
論文對帶飽和電感的移相控制零電壓開關全橋變換器進行了深入的研究。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
最後,通過模擬分析以及對230v / 10a樣機的調試實驗,驗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。These years more and more emphasize have been focused soft - switching control in phase - shifted zvs pwm full - bridge dc / dc converter and more research need to be made. the principles of phase - shifted zvs pwm full - bridge converter are described and analyzed
基於移相控制的零電壓脈寬調制dc - dc全橋變換器是軟開關控制的一個研究熱點,還有許多理論問題需要研究。The problem is much more critical when the inverter frequency is high. in a welding machine, the main circuit with the technology of the soft - switching is much idealer than the hard - switching. firstly of all, by the theory of the soft - switching, this paper relatively analysis the advantages of the soft - switching and, with the help of the simulation software pspice, analyzes the main circuit of the full bridge shift - phased zero voltage zero current ( zvzcs ) soft - switching
結合軟開關實現原理,本文首先對比分析了軟開關在提高效率、降低emi干擾等方面的技術優勢,通過pspice軟體模擬,分析研究了全橋移相零電壓零電流( zerovoltagezerocurrent - - - - zvzcs )軟開關電路,詳細介紹了該電路的軟開關實現過程,並給出了電路模型和關鍵元件的設計參數。The realization of shift - phase pwm control with zero - voltage and high speed, large power drive circuit is emphatically solved
重點解決了零電壓開關的移相pwm控制策略的實現、高速大功率驅動電路的實現等幾個難點問題。The following is the main point : based on the operation principle of the ps - fb - zvs - pwm dc / dc converter, the thesis researches the transient operation of the ps - fb - zvs - pwm dc / dc converter with a saturable inductor, and comprises the characteristic between them, and verify theory analysis above by computer simulations
本論文研究的主要內容如下:論文在分析移相控制零電壓開關全橋變換器工作原理的基礎上,對帶飽和電感的移相控制零電壓開關全橋變換器的暫態工作過程進行了研究,並對它們之間的特點進行對比,模擬驗證了上述理論分析。The thesis analyses the effect of phase shift control and the utilization of the transformers primary sides saturable inductor to the transformers secondary sides voltage duty cycle, and basic on the buck converter s small signal ac model the converter s model is deserved, and infers control to output transfer function
論文通過分析移相控制方式和高頻變壓器一次側的飽和電感對高頻變壓器二次側方波電壓占空比的影響,在buck變換器小型號模型的基礎上建立了帶飽和電感的移相控制零電壓開關全橋變換器的小信號模型,推導出控制到輸出的小信號傳遞函數。However, these converters become more complicate. phase - shift bi - directional dc - dc converter is attractive since it operates with fixed frequency, has small voltage and current stress and can realize zvs without auxiliary switches
相移控制雙向dc - dc功率變換器因具有功率器件電壓,電流應力小,定頻工作和無須增加輔助器件即可實現功率器件的零電壓開關條件等優點而受到關注。Higher frequency, modular construction and digitalization is the main development tendency in the field of the switching power supply. high power density and high frequency converter is based on soft - switching techniques
實現高頻化的主要途徑是軟開關技術,全橋移相零電壓脈寬調制變換器是軟開關pwm技術在全橋直-直變換器中較成功的應用例子,並具有較好的工程實現價值。分享友人