# 瞬時功率的英文

###### 英文翻譯手機版
• instantaneous power
◇瞬時功率輸出 instantaneous power output
###### 例句與用法
• Comparison about instantaneous power theory in idle work compensation system
無功補償系統中瞬時功率理論的比較研究
• Otherwise , we also have probed into the reasons for the pulsation of instantaneous powers in distorted systems
另外，本文對于畸變系統中瞬時功率脈動的原因也做了一些探討。
• 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。
• By studying traditional instantaneous power theory in single - phase circuit , we developed a real - time detecting method in this paper based on digital technology , which can detect harmonic current and fundamental reactive current in both single - phase and three - phase circuits
本文通過對于單相電路瞬時功率理論的分析研究，提出了一種基于數字技術的單相和三相電路諧波和無功電流的實時檢測方法。
• 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，基于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征諧波分量，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。
• 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，并驗證了該控制方法的正確性。
• Design considerations of the high power s - band rka are described , by using electron beams of voltage - 600kv , current - 5000a , and the numerical simulations for three kinds of the rka output structures are given . the three kinds of the output strctures are single - gap standing - wave ( sw ) cavity , traveling - wave ( tw ) output structure , and two output structures ( single - gap + traveling - wave structure ) . under conditions of using two output structures , the results show that the instantaneous peak power obtained from sw output cavity and tw output structure is respectively 2 . 4gw and 2 . 1gw , the both power average of 0 . 96gw and 0 . 93gw , i . e . the s - band rka of two output structures generates peak output power of 1 . 89gw at a frequency of 2 . 85ghz
從數值模擬中得到雙輸出結構的微波功率輸出結果為:駐波輸出的瞬時功率為2 . 4gw (周期平均為0 . 96gw ) ;行波輸出結構輸出瞬時功率為2 . 1gw (周期平均0 . 93gw ) ,就獲得了頻率為2 . 85ghz的微波輸出。本文簡要的描述了電磁軟件( magic )對速調管輸出腔體進行了模擬,并對相應的模擬方法進行了評述。
• Rational control of the pump ' s work and rest time is the key to solve the problem of void pumping . this essay gives theoretical analysis and cost comparison of every detective method , considers power detection as the most effective method , and puts forward several ways of power consumption and effectiveness power consumption at the same time . the designed electricity saving controller integrate all the above four methods , and it can work with different methods by switch between automatic and manual to broaden its accommodation
解決油井空抽現象的關鍵是合理控制開機時間與停機時間長度，本文對各種檢測方法進行了理論分析及成本比較，認為功率檢測最行之有效，同時提出了功率檢測的幾種實現方法，即瞬時功率法、人工電耗法、設定功耗法及效益功耗法，所設計的節電控制器集以上四種方法于一身，可通過自動手動切換采取不同的功率檢測方法，使其適應范圍增寬。