dc ac inverter 中文意思是什麼
dc ac inverter
解釋
逆變器-
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。 -
Development of 3 kva dc ac soft - switching inverter
交軟開關逆變器研製 -
The algorithm of svpwm that is adopted by the system implements motor speed - regulation by control of magnitude and phase of motor flux. it can generate less harmonics in the output current of power inverter and less losses of ac motor, reduce pulsant component in output torque and raise availability of dc supply voltage
系統採用的svpwm演算法通過對空間磁鏈矢量幅值和相位的控制來調節電機轉速，減少了逆變器輸出電流的諧波，降低了脈動轉矩，提高了電壓的利用率。 -
This digital inverter amplifier ' s dc power is supplied by an ac / dc with pfc circuit controlled by 3854
前級直流電壓由3854晶元控制pfc后的ac dc提供。 -
On the contrary, because of the effect of positive damping provided by the inverter, the unit near a inveter will have no subsynchronous oscillation risk. based on the same method described above, a damping study is carried out for a hybrid ac / dc system, which include a hvdc link and an ac transmission line in parallel
研究表明，系統整流站附近的同步發電機組要承受電氣負阻尼作用，因此有可能引起機組低頻扭轉振蕩模式失穩；而hvdc的逆變站向其臨近同步發電機組提供正阻尼，因而機組不存在次同步振蕩危險。 -
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。 -
This paper makes a detailed analysis as to the fundamental circuits and fundamental principles of boost dc - dc converter, spwm inverter and ac voltage adjustment circuit in the power supply. at the same time, the paper introduces the choice of the parameters and the design of control
本文分別對逆變電源中的boost升壓斬波電路、 spwm逆變電路以及斬控式交流調壓電路從基本拓撲結構和工作原理上進行了詳盡闡述，同時介紹了各功能模塊的參數選取和控制設計。 -
This paper mainly describes the small signal model and properties of the dc / dc converter, the optimum control model of the dc / ac inverter and analyses the stability and dynamic characteristics of the system. the experimental results show that the static inverter achieves high performance target
本文主要對6kva電源變換器系統進行了分析，包括前級dc dc變換器的小信號特性，后級dc ac逆變器的最優控制模型，分析了系統的穩定性和動態性能，模擬和實驗表明該電源變換器具有高的性能指標。 -
According to recording data of higher level monitor and control system when main motor drive system for four - high medium plate mill is operated, and relation between armature voltage of dc electromotor and ac input voltage of inverter, trip cause of dc fast automatic switch was analyzed in detail, and specific countermeasure and measures are given
根據中板四輥軋機主電機傳動系統運行時的上級監控系統記錄數據，以及直流電機電樞電壓與變流器交流側輸人電壓的關系，詳盡地分析了直流快速自動開關跳閘故障原因，並提出具體的對策及措施。 -
Aeronautical static inverter ( asi ) is a kind of static converting device, which converts the dc ( 27v / 270v ) in the main power of aircraft into ac of constant - voltage and constant frequency by means of power semiconductor devices. with the development of the aircraft, all the electric equipment on the plane requires the power supply system with better performance
航空靜止變流器（ asi ? aeronauticalstaticinverter ）是航空電源系統的二次電源，其作用是將飛機主電源直流電27v或270vdc變換成恆壓恆頻單相115v 400hz ，單相36v 400hz ，三相115v 200v ，或三相36v交流電，供飛機上負載使用。 -
The fourth part analyzed the intermediate dc voltage and its control principle and the technical parameter of the main parts in the ac transmission system. several key technical problems such as parallel working of the ac motors, the wheel diameter difference under the bogie - control mode, the ac motor - inverter matching principle are studied in detail. the principles to determine the electrical parameters are also discussed
論文第4章重點研究了變流器的中間直流電壓的確定及其控制規律，確定了交流電傳動系統主要部件的技術參數；研究了架控方式工作下電動機並聯工作、輪徑差、電機?變流器匹配原則等關鍵的技術問題；詳細分析了交流傳動系統在牽引工況和電阻制動工況下各參數的工作過程和控制原則。 -
While being the trend and the symbol of high technology of the rac, the ac inverter and the dc inverter rac are seldom sold in china because the know how of these products can not be imported directly or can be imported very expensively
但代表家用空調高新技術和發展方向的交流變頻空調器和直流變頻空調器在我國市場銷售份額中僅占極小比例，其主要原因為關鍵技術（變頻控制器及直流變頻壓縮機）無法從國外引進或引進價格過高。 -
Based on studying of the multi - level technique, a variable frequency speed regulation system based on the diode clamped three - level inverter is introduced in this thesis in detail. it includes ac - dc - ac main power circuit, snubber circuit, isolated driving circuit by optical fibre, delay time circuit on powering, sampling circuit of current and voltage, protection circuit and etc. a distributed power system ( dps ) which can reinforced the system ’ s security is developed to solve the power supply of the whole system
本文在研究多電平技術的基礎上，研製了一套以二極體箝位式三電平逆變器為基礎的變頻調速系統，包括:交-直-交主功率電路，緩沖電路，光纖隔離驅動電路，上電緩沖延時電路，電流、電壓采樣電路，保護電路等。 -
Uninterruptible power system ( ups ) has power storage parts, an ac / dc converter and a dc / ac inverter as major components
Ups （ uninterruptiblepowersystem ） ，即不間斷電源，是一種含有儲能裝置，以逆變器為主要組成部分的恆壓、恆頻的不間斷電源。 -
The ac - dc - ac voltage source inverter ( vsi ) main circuit and tms320lf2407 are selected to form high performance alternating current ( ac ) excitation system of asg in this dissertation after detail schemes argumentation
本論文在詳細方案論證的基礎上選擇了交直交電壓型主電路和數字信號處理器tms320lf2407構成高性能的異步化同步發電機交流勵磁系統。 -
The single - stage isolated inverters can fulfill all the functions of two - stage inverters in one stage, including dc / ac inverter, voltage adjustment and electrical isolation. thus, the circuit structure and the control schemes can be simplified, with resultant high reliability and reduced cost
單級式隔離逆變技術只需一級功率變換就可完成傳統兩級逆變電路的全部功能包括dc / ac逆變、電壓調整及電氣隔離。 -
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。 -
Electronic inverter is widely used in variable speed constant frequency ( vscf ) electrical system, ups, and other kinds of power supplies. with the continuous development of pwm control strategy and digital signal processing technology, the method of the pwm control incline to digital control and then the pwm technique plays more and more important role on the dc - ac inverter control
逆變器在飛機變速恆頻電源、 ups以及其他電源中具有很廣泛的用途，隨著pwm控制策略以及數字信號處理技術的不斷發展，數字控制在逆變器控制方案中的價值也日益凸現。 -
The ac - dc - ac voltage source inverter ( vsi ) main circuit and tms320f240 are selected to form high performance alternating current ( ac ) adjusting - speed system in this dissertation after detail schemes argumentation
本論文在詳細方案論證的基礎上選擇了交?直?交電壓型主電路和數字信號處理器tms320f240構成交流調速系統。 -
Abstract : the multifunctional inverter power sourcethe handy inverter welding, plating & charging manchine, developed with advanced inverter and micro - electronics control techniques, adopts “ half - bridge power expansion supply midpoint voltage autocontrol setting ”, and technically and effectively having solved inverter subvision of inverter power expansion circuit for leaning magnetism, reliability of high - power inverter setting, achives combination of constantcurrent and constantvoltage export, and realizes low - voltage dc and high - voltage ac double power supply
文摘:運用先進的高頻逆變技術和微電子控制技術設計研製的逆變式多功能電源便攜式逆變焊鍍充電多用機，採用「半橋式功放級供電中點電壓自動控制調節裝置」 ，在技術上解決了逆變功放電路因偏磁而造成的逆變顛覆，有效地解決了大功率逆變器的可靠性問題；進行多種外特性的綜合設定，實現了恆流與恆壓輸出的合一；與傳統焊機相比，實現了開環和閉環狀態下都互不影響的低壓直流電瓶和高壓交流雙供電
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