瞬變電壓 的英文怎麼說
中文拼音 [shùnbiàndiànyā]
瞬變電壓
英文
tra ient voltage-
The transient voltage is read at closely spaced intervals after termination of the current.
在電流中斷后的一系列短區間上讀出瞬變電壓。The full - bridge converter was controlled with the pid strategy based on the feedback of voltage output
電源的全橋功率變換器採用基於電壓瞬時值反饋的數字pid控制。Based on output voltage and capacitor - current feedback current spwm control, the inverter is modeled and the prototype is made
並對採用輸出電壓和電容電流瞬時值反饋的電流spwm控制技術逆變器建立了模擬模型,製作了原理樣機。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究,內容包括: ( 1 )本文採用有限長行波面電流作用於有限長鐵芯上的模型,引用了氣隙磁場一維解,研究了單層繞組磁場,奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較,簡單介紹了二維解; ( 2 )用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析,並分析了結果; ( 3 )用軟體進行了額定電壓下的瞬態分析,得到了轉矩,位移,轉速隨時間變化曲線圖,利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較,採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證,由實驗測得了三相電流波形,並與計算結果進行了比較,對其不對稱性進行了定性分析。The response of rl circuit under sinusoidal excitation
電路對正弦電壓瞬變響應及其後果So choose parameter of damping device with reduce energy storage to improve cvt become and respond effective way of characteristic wink rational, this increases the capacity of sending for raising the dynamic stability of the supervoltage power transmission and transformation system, guarantee power system safe and reliable to run and have important technology economic meanings
因此,合理地選擇阻尼器的參數以降低儲能是改善cvt瞬變響應特性的有效途徑,這對于提高超高壓輸變電系統的動態穩定性,增大輸送容量,保證電力系統安全可靠運行具有重要的技術經濟意義。Measuring engine transient process data in ca1258p1k2l11t1 truck in accelerated mode, recording and analyzing the data, then analysis the test error. 4. building model and simulating two typical running mode ? fixed 6th gear acceleration with initial vehicle speed 40km / h and gear change acceleration starting with 2nd gear, comparing calculated result with test result, revising transient process simulation model and analyzing error between calculation
本文基於ca1258p1k2l11t1載重卡車對ca6df2 - 26發動機的瞬變工況進行試驗和模擬計算,結果表明: 1 ) gt - power軟體可以很好的模擬、分析、預測發動機瞬變過程,模擬計算的結果與試驗結果很接近,試驗證明,預測分析指出的改進方向是正確的; 2 )加裝電動增壓器可以降低整車使用油耗,改善低速煙度排放,縮短加速時間,改善整車的加速響應; 3 ) gt - power軟體預測分析配合發動機和整車試驗是分析、解決發動機瞬變過程的有力工具。This paper focuses on the control strategies to improve the performance of the three - phase ac - dc pwm voltage - source - converters ( vsr ) under unbalanced power supply. the problems such as negative sequences current, voltage and current harmonics and un - constant ( un - smooth ) power flow from ac to dc side are discussed in this paper. the analytical solutions for negative sequence current and harmonic current elimination are obtained by fully feed - forward of negative sequence voltage and producing a non - harmonic current command of the inner - loop
電網不平衡時,基於電網平衡為約束條件設計的三相vsr將出現不正常運行狀態,比如三相vsr交流電流中出現負序分量,使交流電流嚴重不對稱;直流電壓和交流電流中出現非特徵諧波分量,使直流電壓和交流電流波形發生嚴重畸變;三相vsr從電網吸收不平衡的瞬時功率等一系列問題。Transient voltage suppressors are usually used in mobile communication, computer, handheld / portable product designs
瞬變電壓消除器通常被使用在移動通訊、計算機、手持/便攜式產品上。These three products are specialized diodes designed for specific purposes and their names give an indication of their use ? however these are diodes which serve to protect the circuit from transient or sudden ( surge ) voltage changes or for constant current diodes, to keep the current constant
此三種產品是專門用來(名稱已經表明其用途)保護電路不受瞬變電壓、急始(浪涌)電壓變化的影響,或保持恆定電流二極體的電流穩定。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 emulational calculating theories of traction power supply system ' s operating charts combine with actual things of engineering design at present in chapter three, to set up traction web current distributing mathematical model, integral distributing mathematical model, locomotive distribution and obtaining current model at every moment, and on which making use of mathematical planning methods to set up mathematical models is based at every moment in every instance interval of the railroads. for instance, instantaneous current, instantaneous voltage descent and effective current, main changing capacity and so on, in addition, there are the minimum power shortage model, the optimal transformer substation location, the least engineering expenditure, the optimal mathematical model of traction power supply system. optimize design ' s algorithm of traction power supply system is introduced in detail in chapter four, where programming idea and realizing method of the computer software are given an explanation
本研究主要進行了以下工作:結合牽引供電系統運行圖的模擬原理和現行工程設計的實際情況,建立了牽引網電流分佈、積分分佈、任一時刻機車分佈和取流的數學模型;應用數學規劃方法建立了任一距離區間、任一時刻的瞬時電流、瞬時電壓降數學模型和有效電流、主變容量和主變壓降、最小功率損失、最佳變電所容量、最佳變電所位置、最少工程費用、最少運營維護費用和牽引供電系統方案最優等方面的數學模型;闡明了牽引供電系統優化設計的演算法和計算機軟體編程思想及實現方法;進行了工程實例計算;最後,對牽引供電系統優化設計技術應用進行了總結。The distributions of velocity vector, vorticity. turbulent kinetic energy and some other detailed flow information in the field are obtained. the influence of electric field on the flow field is discussed and gives a deep insight on it
3 、首次採用piv技術對荷電噴霧射流流場進行了測量,獲得了整個流場的瞬時速度、湍能、渦量等信息分布圖,研究了流場特性隨充電電壓的變化情況。Multifunction of testing voltage value, current value, rf value and transient current strength
多用途測試電壓值,電流值,射頻值及瞬變電流強度等。By analyzing some main factors which affecting the observation of tem, it discusses the way of reducing geological noise, it affirms the relationship between the side length of loop and depth of prospecting, current of supply electricity and the radio of signal and noise
第三章方法技術,從影響瞬變電磁法幾種主要因素入手,探討了壓制地質噪聲的途徑,明確了回線邊長與探測深度、供電電流與信噪比的關系。Surge suppressor surge suppressors are devices capable of conducting high transient voltages. they are used for protecting other devices that could be destroyed by the transient voltages
突變抑制器突變抑制器是能夠抑制瞬間高電壓的設施,用來保護其他設備免受瞬間電壓的破壞。Guide for conducting a transient voltage analysis of a dry type transformer coil
乾式變壓器線圈瞬態電壓分析指南Guide for conducting a transient voltage analysis of a dry - type transformer coil
乾式變壓器線圈瞬態電壓分析指南3. many transient interference waveforms are measured and recorded during switching operations in three 500kv - substations. these waveforms are analyzed, and the characteristic parameters are summarized in this paper based on statistics analysis
3 、參與了三座500kv變電站瞬態電磁環境的測量工作,獲得了變電站開關操作時產生的瞬態電場、瞬態磁場和瞬態電壓等數據。Multifunction of testing voltage value, current value, rf value and transient current strength. it also acts as soldering station with option soldering pen
多用途測試電壓值,電流值,射頻值及瞬變電流強度等外,並設置焊筆介面,可選購焊筆作為焊臺使用。分享友人