電壓變化 的英文怎麼說
中文拼音 [diànyābiànhuà]
電壓變化
英文
change of voltage-
Electromagnetic compatibility - part 3 - 3 : limits - limitation of voltage changes, voltage fluctuations and flicker in public low - voltage supply systems for equipment with rated current inferior or egal to 16 a per phase and not subject to conditional connection
電磁兼容性.第3 - 3部分:限值.額定電流小於或等於16a相併且在無條件連接情況下的設備用公共低壓供電系統的電壓變化電壓波動和電壓閃動的限值In the reform of the power grid of north mining bureau, the active power line conditioner was used for meeting with the requirement of power supply quality and the requirements of voltage changing and sensitive load in power transmission
摘要為滿足礦務局供電電能質量的要求和電能傳輸中的電壓變化和敏感負載的需求,在礦務局北網電網改造中採用了有源電力調節器。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。We can obtain the trap density by measuring the change of gate voltage of mos capacitance under constant current stress and the change of high frequency c - v curve before and after the stress
該方法根據電荷陷落的動態平衡方程,測量恆流應力下mos電容的柵電壓變化曲線和應力前後的高頻cn曲線變化求解陷階密度。It is including the structure of neurons, the distribution of ions concentration in or out of the neuron membrane, the electrochemical gradient of ions, the equilibrium potential, the resting potential and action potential of neuron, the ion theory of the transmembrane potential and the hodgkin - huxley ( hh ) equation
包括神經元的結構,神經元細胞膜兩邊離子濃度的分佈,離子的電化學梯度和平衡電位,神經元的靜息電位,動作電位,描述神經元膜兩邊電壓變化的離子學說以及hodgkin - huxley方程。Difference iterative method was used to estimate numerically director configurations in the nlc - bl037 cell in this paper. the refractive indices and phase retard of nlc in electric field was presented on the basis of the calculation of liquid crystal director distributions. then we analysed the diffraction phenomenon when the linearly polarized light was controlled by diffraction grating which was based on rectangular grating and sinusoidal phase grating models and we got it ’ s math model 。 finally we designed the nlc phase grating and we did the experiment to validate the theoretic calculation
文中利用差分迭代法計算了向列相液晶bl037盒中指向矢分佈的計算,根據指向矢的分佈情況得到了向列相液晶的雙折射率分佈和非常光通過液晶盒產生的相位延遲隨電壓變化;並在矩形光柵和正弦相位光柵的基礎上,分析了入射偏振光通過液晶電控光柵所產生的衍射情況。Abstract : the phenomenon of light and heavy steps in 5 - phase hybrid stepping motors is investigated. focusing on the relationships between phase - current and phase - voltage caused by different switching modes, a proposal to improve the light and heavy steps under3 - 4 phase mode is presented and the well - agreed experimental results are given
文摘:研究了五相混合式步進電動機4 5相通電運行時的輕重步現象,通過分析不同通電方式時導通與截止相的相電壓變化對相電流的影響,闡明了3 4相通電方式可以改善電機輕重步現象的機理,並進行了實驗驗證。In order to ensure the whole system operate economically, power department equip transformer with onload tap changer and shunt capacitors for most distribution substations, according to the operating condition, adjusting the position of transformer taps and capacitors can control the variation of voltage and reactive power exchanger of distribution substations and power system in certain extent
為確保整個系統運行經濟性,降低網損,電力部門在大多數變電站配置了有載調壓變壓器和並聯補償電容器組,根據運行情況適當調節變壓器分接頭的位置和投切並聯補償電容器組,可以降低電壓變化和變電站與系統的無功交換控制在一定的范圍內,確保供電質量和電網運行的經濟性。The bearing pad test and variable voltage test may also be offered upon request from the client
墊板承受試驗和電壓變化試驗可以按顧客要求而提供。Offline control strategy refers to work under known load condition, according to the load condition calculate the instruction voltage, then store them in the datasheet, each time read the instruction voltage from the datasheet, when input dc bus voltage changes, a pi controller is used to adjust the instruction voltage thereby fix the output voltage rms
離線型控制是指在已知負載的情況下,計算出控制用的指令電壓,存在數據表中,每次讀取表中的數據,當輸入母線電壓變化時通過pi調節調整指令電壓來控制輸出電壓。由於計算量不大,用單片dsp就可以實現指令電壓的計算和svm演算法,主要用於負載情況已知且固定的場合。The change would be transformed through signal processing circuit into variation of voltage and transformed into standard ma dc signal output at last, its principle see the figure
通過信號處理電路,轉換成電壓變化,最終將其轉換成標準420 ma dc信號輸出,其原理見圖:( 2 ) we investigate the dependence of the conductance on voltage. we find that the curve is approximately horizontal beeline at low voltage, but conic at high voltage
; feni隧道結電導隨結電壓變化曲線,在低電壓下近似一水平直線,高電壓下,是一二次曲線。The author ' s main contributions are outlined as following : first, the roles of hot electron and hole in dielectric breakdown of ultra - thin gate oxides have been quantitatively investigated by separately controlling the amounts of hot electron and hot hole injection using substrate hot hole ( shh ) injection method. the changes of threshold voltage have been discussed under different stress conditions
主要研究結果如下:首先,利用襯底熱空穴( shh )注入技術分別控制注入到超薄柵氧化層中的熱電子和空穴的數量,定量研究了熱電子和空穴注入對超薄柵氧化層擊穿的影響,討論了不同應力條件下的閾值電壓變化。The test results demonstrate that this prototype has excellent comprehensive performances such as small bulk, lower weight, high efficiency, high steady precision, fast dynamic response, wide range input voltage, good output waveforms, strong over - load and short - circuit ability, and strong function with different nature load and three - phase unbalanced load
試驗結果表明,該變流器具有體積重量小、變換效率高、靜態精度高、動態響應快、輸入電壓變化范圍寬、輸出波形質量高、過載與短路能力強、帶不同性質負載和帶三相不平衡負載的能力強等優良的綜合性能。Because of forecasting reactive load at first, it can detect the change of voltage at low - voltage bus from the change of reactive load or the change of voltage at high - voltage bus, then it can decide that adjusting transformer tap or capacitor switch, and avoid blindly and deficient adjusting. on the condition the reactive power is balanced and voltage qualified, it can realize the switching times of loaded taps and capacitors being efficiently decreased
由於預先預測出無功負荷,提前了解了無功功率變化的趨勢,可以有助於判定低壓母線電壓變化是由無功負荷變化引起還是由高壓側電壓變化引起,從而適時決定是調有載調壓變壓器分接頭還是投切電容器,以此避免了盲目和不充分的調節,實現在保證無功基本平衡和電壓合格率的前提下,減少有載調壓變壓器分接頭的調節和並聯電容器組的投切次數。Voltage variation with speed of a generator
發電機變速時的電壓變化Rate of occurrence of voltage changes
電壓變化的發生率What is voltage fluctuation ? how is it different from voltage variation
什麼是電壓波動?它與電壓變化有什麼不同Transient state voltage varation
動態電壓變化率Duration of a voltage change
電壓變化持續時間分享友人