電橋電流 的英文怎麼說
中文拼音 [diànqiáodiànliú]
電橋電流
英文
bridge current-
A circuit topology of the inverter with duty cycle extended active clamp forward style high frequency pulse dc link is adopted by each independent inverter. each inverter is cascaded by a circuit with duty cycle extended active clamp forward style high frequency pulse dc link and a dc / ac inverting bridge. the control strategy of voltage mode pwm forwardback is adopted by the former, and the control strategy of three - state discrete pulse modulation ( dpm ) hystersis current is adopted by the later
每個獨立的航空靜止變流器採用占空比擴展有源箝位正激式高頻脈沖直流環節電路拓撲，由占空比擴展有源箝位正激式高頻脈沖直流環節電路與dc ac逆變橋級聯而成，前級採用電壓型pwm前饋控制技術，后級採用三態dpm電流滯環控制技術。Dynamo avalanche rectifier assembly -
發電機整流橋-詳細信息This paper selects dc double - arm bridge, uses the four - port connection to remove the contact and connection resistances and reduce the electromagnetism interfere. grounding grid conductors fault levels are established during a lot of emulational computations, simulative experiments
使用直流雙臂電橋，採用四端鈕連接法，可大大降低現場中電磁干擾及引線電阻和接觸電阻的誤差影響。A finite element analysis of 3d eddy current field for heavy current bus bar bridge system
大電流母線橋三維渦流場的有限元分析The front panel houses a bridge-current meter.
正面板上裝有橋式電流表。However, the h - bridge maglev chopper has serious switching losses, so as to have snubber circuit ; there is high emi with the chopper
然而， h -橋斬波器開關損耗大，需要添加緩沖網路，電磁干擾十分嚴重;對供電電源有反向電流沖擊，容易造成供電電源和濾波電容的損壞。Output voltage and current is often distorted in half bridge converter because voltage unbalance of input capacitors though its application is very abroad
摘要半橋逆變器應用廣泛，但存在直流分壓電容不均壓，使分壓電容中點電壓漂移，導致輸出電壓和電流畸變的缺點。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。Verification regulation of dc comparator bridge
直流比較儀式電橋檢定規程Single er valve ' s control equation is derived two mathematic models of er valve - cylinder actuator is constructed according to control methods of er valve - cylinder. and a position control system based on er valve - bridge actuator is simulated. the result shows that the system has good dynamic performance
根據電流變閥對液壓缸的控制方式，建立了兩種由電流變閥控制液壓缸組成的電流變閥控系統動力元件的數學模型，並對電流變閥橋路結構式的動力元件組成的閥控位置系統進行了模擬。Ceramic welding backups are used for one - sided welding of steel and aluminum alloy with any thickness, instead of two sided welding in shipbuilding industry, marine industry, and heavy mechanical industry. the products are stuitable for the most kinds of welding process such as gmaw, saw, fcaw and seg even with high electric current to produce a satisfactory back bead formation
陶瓷焊接墊是用作鋼鐵或鋁合金單面焊雙面成型的支撐件，可替代效率低下的雙面焊工藝，被廣泛應用於造船，橋梁和重型機械等工業領域的各種焊接（ gmaw ， saw ， fcaw和seg ）甚至高電流場合Different power circuits and control strategy of the single phase inverter in parallel condition are first analyzed, and half - bridge inverter is selected as the power circuit and current hysteresis control is selected as the control strategy
本文首先對單相逆變器的主電路結構和控制電路的結構在並聯條件下進行了比較分析，最後選用了半橋結構的主電路和內環為滯環控制的瞬時電壓電流雙閉環反饋控制方式。The operation principle, stability and current ripple of the output filter inductor between serial and parallel modes are analyzed. a 1000 va serial and parallel combined dual buck half - bridge inverter ( dbhbi ) has been implemented to verify the analysis
文章分析了該逆變器的工作原理、串並聯兩種運行模式對輸出濾波電感電流脈動、輸入電壓脈動、系統穩定性的影響，並以1000va雙降壓式半橋逆變器為例進行了實驗驗證。The basic working principles and characteristics of srm will be described firstly in this paper, as well as its developing survey and researching directions. and then the srd system will be separated into several function parts to be introduced respectively in details : ( 1 ) to analyze the basic characteristics of the srm including electromagnetism, current and torque of every angle field of the rotor based on the subsection - linearized inductance characteristics of stator windings and several idealized supposes. ( 2 ) how to design and realize the h - bridge converter, and the method to use it ; ( 3 ) how to design and realize the controller based on dsp ( tms320f240 ) and the control strategies, as well as the program ; ( 4 ) to introduce the monitor program running in a pc, which is programmed by delphi
本文首先介紹了srm的基本工作原理和特點以及srd系統發展概況和研究方向，然後以srd的功能構成為線索分部分進行介紹： （ 1 ） srm的特性及控制策略分析，在電感分段線性化等簡化條件下分析得出了各個轉子位置角度區間的電磁、電流和轉矩特性並分析了控制策略； （ 2 ）分析設計了h橋式功率變換器的設計和工程實現的方法，並設計了基於這種功率變換器的換相邏輯； （ 3 ）分析設計了以dsp為核心的控制器以及控制方法，並介紹了該控制器的軟硬體實現； （ 4 ）介紹了如何用delphi編制實現上位機監控程序。The clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. the operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. the effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined
本文將諧振電感和變壓器交換位置，使變壓器與滯后橋臂相連，這樣箝位二極體在一個開關周期中只導通一次，同時零狀態時諧振電感電流較小，有利於提高變換效率和減小占空比丟失，本文分析改進后變換器的工作原理，並與改進前的變換器進行對比，討論隔直電容在不同位置對變換器工作的影響，確定一種最佳工程方案。By using phase shifting control between right bridge leg and left bridge leg, the output cy cloconverter commutating while the bi - polarity three - state high frequency ac volage from the input cycloconveter is zero, . and commutation overlap of the output cycloconverter and polarity selection of the input voltage, the leakage inductance energy and the output filtering inductance current are naturally commutated, and zvs switching of the output cycloconverter are realized, the surge voltage and surge current of the output cycloconverters are overcome
通過輸入周波變換器右橋臂相對左橋臂的移相，讓輸出周波變換器功率開關在輸入周波變換器輸出的高頻交流電壓為零期間進行換流，並藉助輸出周波變換器換流重疊和輸入電壓極性選擇，從而實現了變壓器漏感能量和輸出濾波電感電流的自然換流、輸出周波變換器的zvs開關，解決了輸出周波變換器固有的電壓過沖和環流問題。Four typical actively clamped resonant dc - link inverter ( acrdcli ) applications - - - - - - full - bridge voltage source inverter ( vsi ), half - bridge vsi, full - bridge current source inverter, as well as three - phase vsi, are selected as models
論文分別以全橋、半橋、電流型以及三相拓撲結構為範例進行雙幅諧振直流環節技術研究。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。The circuit topologies family of voltage mode ac - ac mode ac / ac converters with high frequency link include eight circuit topologies, such as single forward mode, interleaved - forward mode, push pull - full wave mode, push pull - full bridge mode, half bridge - full wave mode, half bridge - full bridge mode, full bridge - full wave mode, and full bridge - full bridge mode etc. the circuit topologies family of current mode ac - ac mode ac / ac converters with high frequency link include single four - quadrant power switch mode, push - pull mode, half - bridge mode, and full - bridge mode circuits. taking full bridge - full bridge mode circuit as an example, principle of uni - polarity phase shifting controll is introduced
電壓源交?交型高頻環節ac ac變換器電路拓撲族，包括單正激式、並聯交錯正激式、推挽全波式、推挽橋式、半橋全波式、半橋橋式、全橋全波式、全橋橋式八種電路；電流源交?交型高頻環節ac ac變換器電路拓撲族，包括單四象限功率開關式、推挽式、半橋式、全橋式四種電路。The dissertation work, covering the methodology study, controller design, prototype implementation and experiment, is presented as following : based on the relations between the voltages and currents in accordance with the states of the rectifier topology, the switching function model was first established and then simulated by carefully designed matlab programs ; the controller ' s hardware was designed around the ti ' s f240 processor and corresponding software was also designed to integrate with the hardware to realize a dual - loop vsr control system
論文主要內容包括演算法研究、控制器設計、裝置開發、樣機實驗。論文過程中，首先根據三相電壓源型pwm整流器各相電壓電流之間的關系和橋路的工作狀態建立開關模擬模型，並在模型基礎上利用matlab軟體對電壓源型pwm整流器及其控制系統進行模擬設計。其次為實現電壓源型pwm整流器雙閉環控制系統提供軟硬體設計方案。分享友人