瞬時電壓
The instantaneous voltage inner loop is used to control output voltage waveform to track a sinusoidal waveform.
電壓瞬時值内環保證輸出電壓波形的正弦度，平均值外環實現對輸出電壓幅值的控制。
The instantaneous voltage PID control inverter has advantage on circuit and cost, compared with voltage current dual-loop control inverter.
逆變器瞬時電壓PID控制與電壓電流雙環控制相比，在電路結構、成本等方面更具優越性。
We design a fast calculating amplitude method: obtain two instantaneous voltages at first, after that calculate the current voltage virtual value once we get another instantaneous voltage.
我們設計了一種快速計算幅值的方法，隻需先采得兩個電壓瞬時值，之後每采樣一個電壓瞬時值即可求得當前的電壓幅值。
The total harmonic distortion (THD) can be reduced by the instantaneous voltage feedback control.
采用電壓瞬時值反饋降低了輸出電壓波形的總諧波量。
Instantaneous reactive power calculated in the measuring circuit is based on instantaneous voltage and instantaneous current value of the supply power line.
檢測電路是基于供電線路的瞬時電壓、電流值進行瞬時無功功率的計算，方法簡單、易于實現；
The quality of sine wave can be guaranteed by the instantaneous voltage value inner loop and the output sine wave value can be controlled by the mean voltage value outer loop .
電壓瞬時值内環保證輸出電壓波形的正弦度，平均值外環實現對輸出電壓幅值的控制。
Those components of which values are independent on history record of sampled quantities and reflect the relationship of instantaneous voltage and current are realized by themselves.
而對于模型中與采集量曆史記錄無關、反映電壓電流瞬時變化關系的元件則用實際元件模拟。
TMS320F2812 DSP is applied to implement the full-digital close-loop control for instantaneous voltage sag compensation based on SPWM and its relevant software program design is presented.
基于SPWM脈沖觸發方式，應用TMS320F2812型DSP實現了動态電壓瞬時跌落補償的全數字閉環控制，給出了相關的軟件程式設計方法。
Adopting sinusoidal instantaneous voltage and current, a new algorithm for measuring sinusoidal electrical parameters has been put forward.
提出了一種利用正弦交流電壓和電流的瞬時值測量正弦交流電參量的新算法。
This paper presents a digital multiple-loop control technology of inverters. The scheme incorporates a current loop with an instantaneous voltage loop, while a repetitive control outer loop is added.
本文提出了一種逆變器數字多環控制技術，該方案在電流環和瞬時電壓環之外附加了一個重複控制環。
Some numerical results have been obtained for the instantaneous sheath thickness, the instantaneous voltage and the ion flux density on the substrate, etc.
采用數值方法模拟出鞘層的瞬時厚度及極闆的瞬時電位變化、鞘層内離子密度和電場強度等物理量的時空變化。
Power meter measure true power by multiplying (analog multiplication) the instantaneous input voltage and input current, the product is then averaged out.
功率表是通過将瞬間的輸入電壓和輸入電流相乘﹐然後取平均值來得到真實的輸入功率。
To improve the steady state operation and dynamic response, a dual-loop control strategy which incorporates the inductor current and the instantaneous output voltage has been used.
該方案采用電感電流和輸出電壓瞬時值雙環控制，以提高輸出穩定性和動态響應。
In essence, the aim of PFC is to make the input terminal of electrical equipment appear resistive to the AC line, and insure that the input current be proportional to the instantaneous line voltage.
從本質上來講，功率因數校正的目的是使用電設備的輸入端口對交流電網呈“純阻性”，保證輸入電流和電網電壓隨時成正比。
The power source protection circuit that can implement instantaneous over voltage, coinstantaneous over voltage, over current protection was introduced.
文中介紹可實現瞬變過壓、非瞬變過壓、過流和電源反接保護的電源保護電路，采用自恢複保險絲和LTC1696為主要器件。
There are two ways to emerge instantaneous over voltage in the side of low voltage which are thunderstruck and instantaneous process of electronic network.
低壓側瞬态過電壓的形成有雷擊和電子網暫态過程兩種途徑。
This paper presents the design of instantaneous inductor current and output voltage feedback loop control strategy for UPS.
介紹了一種基于輸出電感電流内環的電壓瞬時值反饋UPS設計方案；
After the mathematic analysis of the model, the waveform functions in the instantaneous process of the current and voltage are obtained.
通過對電路模型的數學分析，得到了暫态過程中電流、電壓的數學表達式；
The hysteresis wide is widened for decreasing switching frequency and energy losses, which causes the pulsation of instantaneous active power and direct current voltage.
為降低開關頻率和減少開關損失，需增加功率滞環比較器環寬，否則引起瞬時有功功率和直流電壓波動，影響系統的性能；
In order to implement real time detection of harmonic voltage, a method for any harmonic voltage detection based on instantaneous reactive power theory was presented.
基于瞬時無功功率理論提出了一種任意整數次諧波電壓的實時檢測方法。
The tester designed can be used to measure the parameters, such as power factor, effective value of voltage and current, instantaneous value, etc.
所設計的電網參數測試儀可以測量功率因數、電壓和電流的有效值、瞬時值等參數。
Aiming at the problem of voltage sag with phase jump, considering phase jump based on instantaneous reactive theory minimum energy compensating voltage detection algorithm is proposed.
在此基礎上，針對伴有相位跳變的電壓跌落問題，提出UPQC串聯側基于瞬時無功功率理論考慮相位跳變的最小能量補償電壓檢測方法。
Repetitive control is used to reduce voltage distortion under nonlinear loads and instantaneous feedback control is designed to quicken the dynamic response process under abrupt load variation.
系統利用重複控制抑制非線性負載下的電壓畸變，利用瞬時值反饋控制加快負載突變時的動态響應過程。
The response equation on cold wire is discussed, then the relationship of Voltage output of coldwire system to the instantaneous fluid temperature is given by calibrating experiments.
然後，通過冷線的實驗校準，定量确定冷線測溫系統的動态響應關系。
Then, the control of voltage space vector method is explored based on instantaneous reactive power and AC motor drive theory.
其次，論文對滞環電流控制方法進行了分析，指出了滞環電流控制所存在的缺點以及局限性，仿真驗證了理論分析結果。
The experimental results indicate that the instantaneous energy can synthetically reflect the influence of current and voltage on dynamic arc characteristics.
試驗結果表明，瞬時能量可以綜合地反映電流電壓對電弧動态性能的影響。
In recent years, three-phase circuit instantaneous reactive power theory which is applied to the three-phase voltage-type PWM rectifier control is called direct power control (DPC).
近年來，一些學者将三相電路瞬時無功功率理論應用到三相電壓型PWM整流器控制中，也就是所稱之的“直接功率控制”。
Based on the instantaneous reactive power theory, the paper proposed an improved diction method to voltage.
并基于廣義的瞬時無功功率理論提出了一種改進的電壓檢測算法。
瞬時電壓（instantaneous voltage）是指電路中某一特定時刻測得的電壓值。它反映了電壓隨時間變化的瞬時狀态，是時間函數在某一瞬間的具體數值。在電氣工程中，瞬時電壓是分析交流電路動态特性的基礎概念。
時間依賴性
瞬時電壓隨時間連續變化，尤其在交流電路中。其數值在正負峰值間波動，例如家用交流電每秒完成50次完整振蕩（50Hz）。
與穩态電壓的區别
區别于平均電壓或有效電壓（RMS），瞬時電壓捕捉的是電壓波形的精确瞬時值。例如，220V交流電的有效值為220V，但其瞬時值在±311V之間變化（計算式：$V{peak} = V{RMS} times sqrt{2}$）。
數學表達
對于正弦交流電，瞬時電壓可表示為：
$$ v(t) = V_m sin(omega t + phi) $$
其中 $V_m$ 為峰值電壓，$omega$ 為角頻率，$phi$ 為初相角。
國際電氣電子工程師學會（IEEE）在标準IEEE Std 1459-2010 中明确定義瞬時電壓為電場力對單位電荷的瞬時做功能力，強調其與電磁場能量的直接關聯（該标準為電力質量分析的基石）。
注：因搜索結果未提供可直接引用的網頁鍊接，本文定義及公式依據電氣工程學科基礎理論及IEEE标準術語庫，建議通過IEEE Xplore數字圖書館檢索标準原文以驗證細節。
“Instantaneous voltage”是電學中的專業術語，結合搜索結果中的信息，其含義和用法可總結如下：
在交流電路中，瞬時電壓的典型表達式為： $$ v(t) = V_{text{peak}} cdot sin(omega t + phi) $$ 其中：
若交流電源的瞬時電壓表達式為 ( v(t) = 311 sin(100pi t) )，則在 ( t=0.01 , text{s} ) 時，瞬時電壓為： $$ v(0.01) = 311 cdot sin(pi) = 0 , text{V} $$
如需進一步了解電壓的測量方法或具體應用，可參考電子工程類教材或專業資料。
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