unbalance current 中文意思是什麼
unbalance current
解釋
不平衡電流-
Output voltage and current is often distorted in half bridge converter because voltage unbalance of input capacitors though its application is very abroad
摘要半橋逆變器應用廣泛，但存在直流分壓電容不均壓，使分壓電容中點電壓漂移，導致輸出電壓和電流畸變的缺點。 -
Connection method includes single star and double star, relaying protection method includes open delta voltage protection, differential current protection, differential protection, neutral unbalance current protection etc
接線方式有單星或雙星接線，繼電保護方式有開口三角電壓保護、差流保護、差壓保護、中性點不平衡電流保護等幾種形式。 -
After the energization of station system commissioning, the unbalance current of all hv capacitor banks is within permitted
在實際調試送電后電容器組的不平衡電流均在允許范圍內。 -
The protection system can deal with the following motor faults : heavy over - current, over / under - voltage, over - current, current unbalance protection, repeated startings, earth fault and so on
在此基礎上實現了針對過載、堵轉、短路、斷相、逆相、相不平衡等故障的保護。 -
Firstjap background and nkr front axle assembly line problems, non - meet demands and unbalance, is introduced, and modapts is suitble and important for the development of assembly line. secondly, theorials on work study, set time standards and process balance is reviewed, and current workshipment, operation motion capability. balance rate is revealed based on the investigation. according to work study theory, typical seven motions analysis is detailed, and operation method standards is designed. according to the human - machine theory, noise, light, tools, facilities factors is analysised, and conditions reducing production rate is advanced
本論文採用理論與實踐相結合的方法，運用工業工程、人機工程學有關工作研究、方法研究、勞動定額、模特排時法等理論和方法，在分析大量文獻資料的基礎上，參考國內外在工業工程方面的最新研究和應用成果，對江鈴車橋廠nkr型汽車前橋裝配線的組織設計進行了系統的重組和優化設計研究。 -
It has been verified by simulation tests that the symmetric short - circuit protection can not only avoid the starting current but also achieve higher sensibility ; unbalance protection can distinguish unbalance short - circuit and loss of phase. the operation parameters of other protective functions has all reached the design requirements
短路保護既能躲過起動電流，又有較高的靈敏度；不平衡保護，能準確區分不對稱短路和斷相故障；其它保護功能的動作指標均達到了設計要求。 -
There exist two kinds of sources, which have caused current inequality of opportunities hi education. for one thing, it is outwardly influenced by the backwardness and unbalance of present economic and cultural development, which consists of the remaining and extreme trend of dualistic pattern of economy and society, lack and unequal distribution of national expenses of education and former culture. for another, it is inwardly affected by competitive examination of systematic education and elite education and increasing unhealthy elements in a microcosmic way
造成目前我國教育機會不均等現狀的根源，從教育外部來看，在於現階段經濟、文化發展水平的落後與不平衡，特別是二元經濟社會結構的留存及其益發兩極分化的趨勢，國家教育經費的滯后投入和不均衡分配，以及舊文化因素對人們的觀念影響；從教育內部來看，則在於制度化教育、英才教育的競爭性考試和在微觀上一些不健康因素的滋生。 -
Tendency of policy concerning the adjusting the current unbalance of external economics of our country
我國外部經濟失衡調節的政策趨向 -
A simple and easy operating criterion is put forward in accordance with the relation between positive - sequence component and negative - sequence component of stator current when the motor is in unbalance and single phase broken. based on analyzing the traditional inverse time - lag overloading protection of motors, an inverse time - lag operating equation with accumulating stator current is achieved, according to the differential equation of the heating and cooling while the current flows into the conductor
在分析電動機傳統的反時限過負荷保護的基礎上，根據導體中流過電流時的發熱、散熱微分方程得到了累加定子電流的反時限過負荷保護動作方程，經簡化后得到累加定子電流的實用的反時限特性遞推公式。 -
In the book of the theories of international finance and the techniques of quantitative analysis, professor pan guoling proposes a new method of quantitative analysis to solve unbalance of international payments. the article deduces two dynamic equations of net foreign assets and current account by employing the economics and mathematics methods, revealing the relation between the two accounts and the other economic parameters
潘國陵老師在《國際金融理論與數量分析方法》一書中，提出了一種新的解決國際收支和國際債務失衡的數量分析方法，文章運用經濟學和數學方法推導出國外凈資產和經常項目收支動態方程，初步揭示了國外凈資產和經常項目收支與其他經濟變量之間的內在聯系。 -
The criteria used for adaptive feedforward compensation is introduced, two unbalance compensation ways of permanent magnet biased magnetic bearing based on bearing current minimization are studied, the recursive adaptive algorithm and the unbalance compensation on estimation of synchronous rotate speed are studied, the simulation results are given
在基於零電流補償原則的基礎上，提出基於遞歸運算的不平衡補償方案，進行了理論分析和模擬研究;對基於同步轉速估算的不平衡補償方法進行了詳細的理論分析，並進行了模擬研究。 -
Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。 -
According to the test results the hv capacitor banks which the unbalance current is larger have been adjusted
根據試驗結果對不平衡電流偏大的電容器組各臂電容值進行了調整。 -
In order to get suitable algorithms which are accuracy, feasible, practical and convenient to be realized by virtual instrument, this paper firstly analyzes measuring algorithms of major power quality parameters, such as voltage, current, frequency, harmonics, flicker, unbalance factor etc. then two algorithms, the one for basic power quality parameters measurement based on spectrum correction and the other one for flicker measurement based on fft, are presented
基於虛擬儀器技術的電能質量測試儀應用靈活，升級方便， 「軟體就是儀器」的特色使測試儀各種通用功能和預期功能的方便實現成為可能。文章對電能質量的一些主要指標:電壓、電流、頻率、諧波、電壓波動和閃變、三相電壓不平衡度等的測量演算法進行了分析，尋求適合虛擬儀器實現的，切實可行、計算精確、實用性強的計算方法。
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