词语大全 ac-dc-ac中文翻譯

Posted 2022-08-20 矢量

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词语大全 ac-dc-ac中文翻譯

Ac - dc - ac intelpgent frequency converted speed control system for mine hoist
交智能變頻調速系統

Control strategy of multi - drive system based on ac - dc - ac matrix converter
交型矩陣變換器的多驅動系統的控制策略

Simulation research on ac - dc - ac frequency conversion timing control system with high - power
交變頻調速控制系統的仿真研究

Main circuit adopts the ac - dc - ac structure and uses ipm ( intelpgent power module ) as main switch
主電路采用交?直?交電壓源型變頻器，功率器件采用智能功率模塊ipm 。

Second , the construction of ac - dc - ac lootive emulation system , which contains introduction of main constitutional models , specific implement of special models , etc
包括該仿真系統的主要構成模塊介紹、特殊模塊的具體實現等。

Comparing with the ac - dc - ac converter , the mutation process of a matrix converter ( mc ) is more ppcated due to having no natural free - wheepng paths
摘要由于矩陣變換器( mc )電路沒有續流路徑，它的換流過程比交直交變換器更為復雜。

According to the study of frequency - conversion technology , it is available to convert the speed of asynchronism motor , adopting ac - dc - ac transducer , reapzing to convert the speed
通過對變頻調速技術的研究，利用變頻技術對異步電動機進行調速是可行的。

Variable speed wind power dfig - based generation system is connected to power grid via an electrical conversion system that is basically an ac - dc - ac electrical power converter , which operates at rotor side withfrequency
雙饋電機變速恒頻發電系統通過一個電能變換器與電網相連,這個電能變換器通常采用ac - dc - ac變換器。

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。

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 principle of ac - dc - ac lootive is that transformer transforms the high single - phase ac voltage from contact system to lower ac voltage first , then rectifier transforms this ac voltage to steady dc voltage , finally converter transforms this dc voltage to three - phase vfvv ac voltage as the voltage source for asynchronous machine
交?直?交型電力機車系統的原理是：先將從接觸網獲得的單相交流高電壓經變壓器降壓后，再經整流器變換為平穩的直流電壓，直流電壓經逆變器變換為三相交流電壓，供給機車輪對上的牽引電機。

It is designed that power drive circuit posed of mosfet ac - dc - ac voltage - type inverter and signal samppng . the experimental results prove that the dtc technology has been appped in induction motor successfully . jiang yi ( electromotor control and energy economy ) directed by prof
該系統以直接轉矩控制技術為理論基礎，以美國德州儀器公司生產的電機微控制器tms320lf2407為控制核心，自行設計并完成mosfet交直交電壓型逆變器并集信號采集為一體的功率驅動板。

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 , samppng 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,研制了一套以二極管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。

According to the space vector modulation method of the equivalent structure of the ac - dc - ac transformation , the transformation relations of the matrix converter are deeply investigated . the ac - ac direct conversion control and the double - space - vector pwm scheme of the matrix converter are deduced , the four - step current mutation strategy of matrix converter is expatiated , the design method of input filter and over voltage protection circuit is analyzed , and the modepng and simulation of a three - phase matrix converter are implemented
從等效交-直-交變換的空間矢量調制方法出發，深入分析了矩陣式變頻器的變換關系，導出了交-交直接變換控制規律和雙空間矢量脈寬調制技術，闡述了矩陣式變頻器的換流控制策略，分析了輸入濾波器和過電壓保護電路的設計方法，實現了矩陣式變頻器的建模和運行分析。

Besides these , it is capable of performing frequency conversion with sinusoidal output voltages and currents at the desired output frequency and allows bi - directional power flow according to the space vector modulation method of the equivalent structure of the ac - dc - ac conversion , the conversion relations of the matrix converter were deeply investigated . the ac - ac direct transformation control and the double - space - vector pwm scheme of the matrix converter were deduced and the modepng , sin ~ iu1ation and experiment of a three - phase matrix converter were implemented
本文從等效交一直一交變換的空間矢量調制方法出發，深入分析了矩陣式變換器的變換關系，推導出了交一交直接變換控制規律和雙空間矢量pwm調制技術，實現了交一交直接變換控制方式下矩陣式變換器的建模和運行分析，并進行了計算機仿真和實驗研究。

In the paper , on the basis of research of static state and transient state in the scr and series connection valve circuit , the high voltage scr changing current valve device has been developed for ac - dc - ac high voltage mutatorless motor . the series connection valve circuit has been designed and simulated . the hardware design and sofare programming of trigger pulse system and monitoring system in the photo - electronic - photo fashion has been pleted
無換向器電動機在火電廠等工礦企業的電機調速節能領域中有十分廣闊的應用前景，本文在對晶閘管元件和串聯閥電路的靜態特性和動態特性研究的基礎上，研制了用于交直交電流型高壓無換向器電動機的高壓晶閘管換流閥裝置，進行了串聯閥電路的設計和仿真，完成了電光電方式的觸發脈沖系統和監測系統硬件設計及軟件編程，并進行了裝置的實驗調試。

The power circuit of the system adopts the voltage frequency conversion structure of ac - dc - ac , and is posed of the mutation circuit , filter circuit and intelpgence power module ( pm15rsh120 ) . control circuit takes the dsp chip tms320lf2407 as core , including the pwm signal occurrence circuit , detect circuit of stator current and direct current voltage of generatrix , drive circuit of intelpgence power module , detect circuit of speed , protect circuit of system etc . all of this builds the full digital vector control system of asynchronous motor
該系統的功率電路采用電壓型的交-直-交變壓變頻結構,由整流電路、濾波電路及智能功率模塊ipm ( pm15rsh120 )逆變電路構成;控制電路以dsp芯片tms320lf2407為核心,加上pwm信號發生電路、定子電流檢測電路、直流母線電壓檢測電路、智能功率模塊驅動電路、速度檢測電路、系統保護電路等,構成了功能齊全的異步電機全數字化矢量控制系統。

First , variable speed constant frequency wind energy convertion theory is described in this paper , then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid . then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stabipty . simply aerodynamic characteristic of the turbine is analysised and permanent mag synchnonous generator math model is estabpshed . to convert the variable frequency electricity into utipty grid , back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy . then simulation is implemented to test the control strategy . in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and o control strategy is presented
建立了永磁電機和變流器的數學模型,針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制,通過變流器交-直-交的變換,將發電機發出的變頻變幅值交流電轉化為可用的恒定頻率的交流電,通過pwm調治能使其輸出功率因數為一,并且該控制系統功率因數為可調,能在特殊情況下同電網交換一定的無功功率,并通過對變流器的控制實現了最大風能俘獲的功能。最后采用matlab / simupnk進行了仿真,取得了良好的仿真效果。在風力發電系統中,采用先進的最大功率俘獲算法,能有效的從風中獲得最大的能量。

The steady state and transient characteristics of the aceg system are simulated , the harmonics of the emf and stator current and rotor current as well as mc \' s input current are researched . the operation characteristics of aceg with mc as an exciter are pared to those of aceg with ac - dc - ac converter and cycloconverter as an exciter . the results in this thesis will be helpful to the design of the aceg excitation control system
利用所建模型，對交流勵磁發電機系統的穩態調節特性、暫態特性進行了仿真研究；仿真研究了發電機定、轉子電流和感應電勢及變頻器輸入電流波形，并作了相應的諧波分析；與交-直-交變頻器和交-交變頻器作勵磁電源時發電機的運行特性進行了對比分析。

This thesis demonstrates a " ac - dc - ac lootive emulation experiment platform " system , which is used to simulate behaving environment of lootive system in several control circumstance and obtain kinds of performance parameters , so it contributes to the design of lootive . to user - puter interaction , this thesis devises corresponding graphical user interfaces , so users can configure various modules " and controllers / parameters with knowing pttle about the details of this emulation system
本論文擬構造“交?直?交型電力機車仿真試驗臺”一系統，模擬電力機車系統在各種控制條件下(如牽引、制動等)的運作情況，觀測各種性能指標參數(如變壓器一次側電壓/電流/功率因數、牽引電機電壓/電流、牽引力、機車速度等) ，這對于電力機車的設計和運行具有一定的指導意義。

In this paper , the matrix converter can be viewed as ac - dc - ac converter , spwm control technique which usually used in ac - dc - ac converter is appped in the control of matrix converter , the spwm control strategy of matrix converter is presented . puter simulation and experimental research of the matrix converter with such strategy is carried out . we adopt tms320c24x as controller when we design the system
本文通過把矩陣變換器等效為交-直-交變換器，把在交-直-交變換器中長采用的spwm控制技術應用到矩陣變換器當中，提出了矩陣變換器的spwm控制策略，并進行了計算機仿真和實驗研究。