magnetizing current 中文意思是什麼
magnetizing current
解釋
磁化電流, 激磁電流- magnetizing : 磁化的
- current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
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Maximum rated circumferential magnetizing current
額定周向磁化電流最大周向磁化電流 -
The fast discrimination between magnetizing in - rush current and fault current is a difficulty in transformer protection presently. to solve this problem, second harmonies restraint and dead angle are used widely in practical application
勵磁涌流的快速鑒別仍然是當前變壓器保護面臨的一個難點，在實際應用中廣泛採用二次諧波制動原理和間斷角原理來鑒別勵磁涌流。 -
2 ) an efficient model based on physical similarity was made to simulate the current transformers " nonlinear magnetizing characteristics and to compensate error from outside. a similar magnetizing current extracting method based on bang - bang control was advanced to maximally extract the similar magnetizing current
（ 2 ）針對電流系統中大量運行的0 . 5級電流互感器，利用物理相似原理在互感器二次構造相似電流互感器，提出基於bang - bang控制的相似激磁電流提取方法，能夠最大程度的提取相似激磁電流。 -
At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened
目前，牽引變壓器通常採用差動保護作為主保護，但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障，如故障電流與變壓器處于勵磁涌流、過勵磁， ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分，可能造成保護誤動或拒動，從而危及整個鐵道電氣化系統的安全運行。 -
The alternating current in the alternating current magnetic field leakage testing ( ac - mfl ) is one of the magnetizing manners. the sensitivity is very high to the defect of surface and the near to the surface of the workpiece. it is one of the developing directions of nondestructive testing ( ndt ) domain
交變漏磁檢測技術中的交變是漏磁檢測技術中的一種磁化方式，該技術對工件表面及近表面缺陷具有較高的檢測靈敏度，是無損檢測領域未來主要發展方向之一。 -
How to discriminate between internal fault and magnetizing inrush current is the difficulty of transformer protection when apply differential relay
變壓器主保護選擇差動在原理上存在不足，帶來的問題就是如何準確鑒別勵磁涌流與內部故障，這也是目前變壓器保護的難點。 -
In order to meet needs of reliability and speediness of power transformer protection, and to have protection blocking reliably in the presence of magnetizing inrush current, the wavelet transform is applied to the discrimination between inrush current and fault current
本文把小波變換應用於勵磁涌流的鑒別，詳細探討了用小波變換來區分勵磁涌流和故障電流的具體方法，提出了兩種比較適用於工程實際的方法。 -
Permanent magnet synchronous motors ( pmsm ) have the advantage of not requiring any magnetizing current and easy to control. they are widely used in high performance servo systems
永磁同步電動機轉子勵磁由永久磁鐵產生，因其電路結構簡單，控制方便，而廣泛應用於高性能的伺服系統中。 -
In order to improve the behavior of transformer protection that is incomplete at present in distinguishing magnetizing inrush current from fault current, the paper puts forward a kind of new principle of transformer differential protection after analyzing the characteristic of magnetizing inrush and active power consume of transformers. this protection uses differential protection based on positive sequence active power as a criterion to discriminate internal faults from magnetizing inrush, and ratio restraint differential current protection as a signal to touch off the protection
針對當前電力系統中變壓器保護由於勵磁涌流鑒別理論不完善而導致的誤動率相對較高的問題，論文在分析了變壓器勵磁涌流特性和有功損耗的基礎上，提出了用變壓器正序有功功率差動作為區別勵磁涌流和故障電流的判據，並以成熟的比率制動差流保護作為內外部故障判據的變壓器主保護。 -
This thesis chooses b spline wavelet that adapts to the analysis of power system signal, and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current. a transformer microcomputer protection was designed in this thesis, and in the base of intermission angle principle, a new criterion was established, which pierces through the traditional method with accurate measurement of intermission angle, but analyses the wave by wavelet transform. this criterion is lower in hardware, so it will be realized in the existing hardware
本文選擇適合電力系統信號分析的b樣條函數作為母小波，對勵磁涌流和內部故障電流進行小波分析，並設計微機型變壓器保護基本配置，在以往間斷角原理鑒別勵磁涌流的基礎上，突破傳統精確測量勵磁涌流間斷角的方法，直接對信號小波變換后的波形進行分析，建立一個新的鑒別勵磁涌流判據，該判據對硬體要求不高，可以在現有一般硬體平臺上實現；並編寫以b樣條函數為母小波的小波變換判據演算法程序。 -
The coordination control between the angle error and the ratio error was realized through analyzing the common characteristics between the similar magnetizing current compensation and the anti - turn compensation
通過分析相似電流補償和反匝數補償的特點，對電流互感器的比差和角差進行了協調控制，補償效果明顯。 -
In this paper, the working principle of the interleaving two - transistor forward converter is analyzed in detail, and the waveforms of the switch drain - to - source voltage and transformer magnetizing current are researched in different duty cycle conditions. the simulation model is constructed and the simulation results verify the analysis
本文分析了交錯並聯雙管正激變換器的工作原理，研究了在不同占空比條件下開關管的漏源電壓和變壓器勵磁電流波形，建立了模擬模型，模擬結果證明理論分析的正確性。 -
4 ) a comprehensive active electronic compensation is given which keeps the characteristics of the similar magnetizing current compensation and adds the function of anti - turn compensation. the constitution of the compensation is simplified, and the working area is enlarged by anti - turn compensation method
（ 4 ）根據相似補償方法和反匝數補償方法的共同點，採用了電流互感器的綜合有源補償方法，使得基於物理相似原理的有源補償法應用范圍更廣，並在理論上通過對綜合補償方法的誤差分析，證明了綜合補償方法的可行性。 -
This method can effectively compensate the current error caused by magnetizing current at power frequency. 3 ) because most current transformers have the turn compensation, the characteristic of which was analyzed and the anti - turn compensation model was adopted to offset the action for current transformer with turn compensation
（ 3 ）針對電力系統中大部分互感器都採用了匝數補償的特點，分析了匝數補償的特點，採用了反匝數補償方法，以抵消匝數補償對電流互感器誤差特性的影響，恢復電流互感器原有誤差特性，確保基於物理相似原理有源補償方法的補償效果。 -
Magnetizing inrush current has obvious singularity, and wavelet transform has multi - scale and good time - frequency local characteristic, that it is particularly well adapted to extract the characteristic of signal ' s edge and peak value, and can check up the singularity well
變壓器勵磁涌流具有明顯的奇異性，小波變換具有多尺度分析和良好時頻域局部化特性，適合提取信號邊緣和峰值突變的特徵，能夠很好的檢測信號奇異性。
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