vector power 中文意思是什麼

vector power 解釋
華爾泰
  • vector : n 1 【數學】向量，矢量，動徑。2 【航空】飛機航線；航向指示。3 【天文學】幅，矢徑。4 【生物學】帶...
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  1. Ar power spectrum of vector vibration signal and its application

    功率譜分析及應用
  2. Xiaotao chang, dongrui fan, yinhe han, zhimin zhang. “ soc leakage power reduction algorithm by input vector control ”. international symposium on system - on - chip 2005 ( issoc2005 ), november 14 - 17, 2005, tampere, finland

    黃海林，范東睿等， 「嵌入式處理器中訪存部件的低功耗設計研究」 ，計算機學報， 2006年5期（ 815 ? 821 ） 。
  3. Traditional power control algorithin is to use a convergent iteration fimtion to set up a mathematical model. when such method is used to control the power of user, we should find the optimum solution vector of the convergent iteration funhon by iteration transform

    在傳統的功率控制演算法，通常採用某個迭代關系式為其建立某一的數學模型，該迭代關系式應滿足收斂特性。
  4. Through analyzing and researching the problem of variable frequency to working frequency of high - power electromotor in theory, the key of conversion is pointed out in the paper. on the basis of analyzing equivalent circuit diagram and vector - diagram of induction - motor, the phase of working frequency power whether or not consistent with the output phase of variable frequency power at the moment of conversion is the key to decide whether the conversion is successfully

    本論文針對大功率電機變頻轉工頻轉換存在的問題在理論上作深入細致的研究，根據感應電動機的等效電路和相量圖分析，指出大功率電機變頻轉工頻能否成功，關鍵在於變頻轉工頻瞬時，工頻電源和變頻輸出電源是否相位一致。
  5. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  6. The poynting vector that represent the flow of electromagnetic power density on a sphere from a linear dipole antenna is approximated by the summation of the field of segmented line current as hertz dipoles

    以赫芝偶極之電磁場合成任意長度偶極天線在球面上電磁功率密度流之時變玻因亭向量。
  7. In this paper, several scheme of vscf is compared firstly, of which gets doubly - fed generating mode. doubly - fed vscf wind power generating system uses a doubly - fed induction generator, which rotate speed can be able to change with wind turbine, and it ensures a constant - frequency output, by controlling the frequency of current input into rotor windings. in vector trans control system, the control of stator active power and the control of stator reactive power can be essentially decoupled, and the former is via torque component and the latter is via exciting component of stator current

    本文首先比較了幾種變速恆頻方案，從中選擇了雙饋式變速恆頻方案；它運用雙饋電機的工作原理，允許發電機轉速變化，而在電機轉子側接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恆定；再結合矢量控制技術，通過調節轉子電流來控制定子電流的轉矩分量和勵磁分量，相應獨立地控制發電機輸出的有功功率和無功功率。
  8. Practice testing, theory analysis and simulation results all indicate that cycloconverter - feed synchronous motor vector control system inpours vast harmonic to the power grid

    從實際測量、理論推導及模擬研究中都可以看出該系統運行時會向電網注入較大的諧波。
  9. By analyzing the basic principle of voltage space vector pwm, a method is proposed to choose the zero vectors dynamically according to the power factor angle of the load and the concept of the lag angle of non - switching sectors

    在分析了空間矢量pwm基本原理的基礎上，提出了一種根據負荷功率因數角動態分配零矢量的方法，並引入了不開關扇區滯后角的概念。
  10. The concept of instantaneous power, the principle of dtc, and the method of selection of voltage vector are presented

    本文介紹了瞬時功率的概念、直接功率控制的原理和電壓矢量選擇的方法。
  11. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  12. Through the analyzes of electromagnetic system of a axial symmetry by the method of electromagnetic vector potential, an eddy current field math model is build by triangle cell, this article has researched the effect of power frequency to eddy current density, penetration depth and the skin effect

    本文以電磁場矢量位有限元法為基礎對二維軸對稱場的磁場強度、渦流密度進行了計算求解，採用三角形單元和六面體單元建立了渦流場數學模型，研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。
  13. This paper does simulation analysis of this model, especially emphasizes on harmonic analysis of the power grid. and some changing rules and influencing factors of this vector operation system are deduced

    對該模型進行了模擬分析，並著重對交-交變頻同步機系統注入電網諧波進行了研究，得出交-交變頻同步電機系統運行時諧波的一些變化規律及其影響因素。
  14. We discussed the four - legged inverter with space vector modulation ( svm ) to aim at three - phase four - line output ; we introduced the principle of three dimensions svm, and attained the related control scheme. with the illustration of 15kva vscf power inverter, we tested and verified that the inverter system under 3d svm control can realize the three phase four line output and linear voltage regulating

    針對三相四線輸出的電源系統，對採用空間矢量控制的四橋臂逆變器進行了深入研究，對三維空間矢量調制方案進行了分析求解、模擬，並給出了適用於15kva變速恆頻電源變換器的解決方案，實現了變換器的三相四線輸出以及線性調壓。
  15. Prototype of the symmetrical typical voltage space - vector of open - loop variable frequency speed system is designed by using the tms320f240 digital controller and the ipm ( intelligent power model ), with which had a exam on the motor and the experimental results are also given. from the results we can conclude that the results are according with the theory analysis

    利用ipm智能功率模塊，設計了採用基於tms320f240數字控制器的對稱空間電壓矢量的開環變頻調速系統的原理樣機，對電機進行了空載實驗，給出了它們的實驗結果，實驗結果和理論分析相一致。
  16. The 3 - d vector and pattern of electromagnetic field and power density on a sphere from an array of time harmonic current

    弦變線電流陣列在球面上電磁場及功率密度流之時變向量與三維場形。
  17. In this thesis, a slid frequency vector control system and a speed sensorless vector control system based on reactive power are investigated and analyzed

    通過深入分析空間矢量的調制與過調制，本文提出了一種基於dsp的矢量控制實施方案。
  18. A linear theory of rbwo with inner - slot coaxial structure is analyzed detailedly, and the equation of dispersive relation is deduced and computered numerically. 4. particle simulation is used in rbwo respective with coaxial and partial structure. in the simulation, the output parameters of rbwo such as phasespace, contour, vector, voltage, current, output power, interaction efficiency and microwave radiation

    4 .對同軸和偏心返波管分別進行了粒子模擬，通過改變電壓、電流、電子注位置、磁場等參數來觀察返波管加了內開槽前後相位空間、等位線、矢量、電壓、電流、輸出功率、工作頻率的變化。
  19. Being the base of vector spectrum, fundamental vector spectrum and vector power spectrum are studied detailedly in this paper the work of short time vector spectrum is also involved in this paper what ' s more, this paper also dealt with different degree of information fusion

    本文中僅對處于基礎地位的矢量譜和矢功率譜進行詳細的理論及應用研究，並有代表性的探討了非平穩信號的短時矢譜分析。
  20. In fact, vector spectrum comprises a " series of analysis methods : fundamental vector spectrum, vector power spectrum, vector spectrum that used to analysis stationary signals, and short time vector spectrum to non - stationary signals

    矢譜分析是針對旋轉機械矢量信號的一系列分析方法的總稱。矢譜范疇包括針對平穩信號的矢量譜、矢功率譜、矢量倒譜以及針對非平穩信號的短時矢譜等眾多分析方法。
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