generator field 中文意思是什麼
generator field
解釋
發電機磁場-
So far, there has existed several kinds of theory of ground fault protection for field winding of generator. in these methods, pingpong bridge field ground protection is a simple and effective one
目前已有多種原理的發電機勵磁迴路接地保護，其中乒乓式勵磁迴路接地保護是一種簡單有效的保護原理。 -
In the second part, provided that the operating mode of the turbo generator keeps unchanged when the rotor winding appears fault, the magnetic motive force of the field winding will keep unvaried
通過對發電機磁動勢的分析，得出發電機在故障前後運行工況不發生變化的條件下，勵磁磁動勢將會維持不變的結論。 -
The two - point to earth short fault may cause short currents whic h can lead to serious accident. so it is necessary to monitor the state of field windings of turbo - generator and detect the kind of fault and predict its inclination. thus the security level of power system will be improved
由於發電機轉子兩點接地故障時會產生較大的短路電流，導致惡性事故的發生，因此對發電機轉子繞組進行狀態監測，判斷短路故障的形式和趨勢是十分必要，有助於提高系統安全運行水平。 -
This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。 -
Duo to the intrinsic characteristics of the gaas material, serai - insulating ( si ) gaas photoconductive semiconductor switches ( pcss " s ) have more obvious advantages in the performance of both high power and ultra - fast switching than those pcss " s made of other materials and then can be widely used in ultrahigh speed electronics, field of high power microwave generation and pulse forming ( pulse sources of high power ultra - fast electromagnetism, ultra - wide - band microwave generator )
半絕緣gaas光電導開關（ photoconductivesemiconductorswitches簡稱pcss ' s ）具有兼備寬頻帶和高功率容量特性，使其在超高速電子學和大功率脈沖產生與整形技術領域（大功率亞納秒脈沖源、超寬帶射頻發生器等）具有廣泛應用前景。 -
The general signal source, represented by function generator, is wildly used in the modern testing field
函數發生器作為一種常用的信號源，是現代測試領域內應用最為廣泛的通用儀器之一。 -
The new general signal source, represented by arbitrary wave generator, is widely used in the mordern testing field
以任意波形發生器為代表的新型通用信號源，是現代測試領域內應用最為廣泛的通用儀器之一。 -
Aiming at the conveying - alcohol pipe system of a certin model gas generator in our school rocket engine field laboratory, this paper does a series of simulation studies using amesim, analyses and summarizes the results of simulations, and at the same time implements some waterhammer experiments, and compares the results with the ones of simulations
本文針對我校火箭發動機試驗外場的某型燃發器試驗酒精供應管道系統，使用amesim進行了一系列的模擬研究，對模擬的結果進行了分析和總結，同時還開展了水擊試驗，並與模擬進行了對比。 -
Two dimensions analysis and calculation of generator negative sequence eddy current field
主動規則的終止性分析 -
Modal bode plot theory for diagnosing the rotor imbalance axial position and rotor imbalance type is presented based on advanced rotor dynamics theory and field balancing rotating machinery theory and comprehensive experience of field balancing steam - turbine generator set
摘要基於轉子動力學理論、汽輪發電機組軸系現場動平衡理論和工程實踐經驗，提出可直接判斷軸系不平衡軸向位置及不平衡型式的振型波特曲線方法。 -
My research paper can be divided into five parts : i. practical mathematical models have been derived and equations are also derived ( includes field excitation system, governing system ), which are used in generator three phases short circuit and by adding large loading. ii. simulation of the generator ' s shunt - wound run
發電機組實用數學模型的推導（包括勵磁系統和調速系統） ，並由此推出了用於發電機三相突然短路和突加異步電機大負載模擬的差分方程；並進行了突卸負載、突加負載時調速系統的模擬過程； 2 -
In computation of swept volume approximation, an improved technique to generate the swept volume approximation for arbitrary meshes is presented by introducing generator simplification and path resample using frenet moving frames along the discreted sweeping trajectory. other steps, such as a directed distance field computation on a uniform grid based on the hardware accelerated computation technique and iso - surface extraction using marching cubes algorithm, are also included in this algorithm. in addition, the simplification scheme and smoothing technique are applied to the swept volume generated from iso - surface extraction
本文的主要貢獻在於：在掃描體逼近計算方面，在原有任意多邊形網格模型沿任意路徑運動生成掃描體逼近演算法的基礎上，提出了加入對掃描母體簡化的預處理和用活動標架對掃描路徑進行重采樣等過程，演算法的其它過程還包括：計算掃描體中幾何基元的排列，用硬體加速構造無符號的有向距離場，將無符號距離場轉化為有符號距離場，從有符號有向距離場提取等值面等。 -
The impacts of different spray nozzle types and injecting pressures on temperature uniformity of the exhausted flow field of the gas generator were studied experimentally
實驗研究了彩不同酒精噴入形成和參數對氣體發生器排氣溫度均勻性的影響。 -
In foreign trade field, company focuses on the international engineering contract, project bidding, complete device exporting and other fields such as metallurgical machinery, mine machinery, universal machinery, light industrial machinery, hardware tools, foods machinery, steel structure workshop, water power station water power generator set, traffic, energy sources, communication, building materials, household apparatus and textile
對外貿易以國際工程承包項目招標成套設備出口及冶金機械礦山機械通用機械輕工機械五金機械食品機械鋼結構廠房水力發電站水電機組火力發電站火電機組交通運輸能源通訊建築材料家用電器紡織品等領域為主。 -
Secondly, the math model of the high - speed pm generator with a shielding is deduced. the method of how to analyze the electromagnetic field of the generator is introduced. and with the help of a kind of fem software, the parameters of a model machine are calculated and simulated, including the electromagnetic field, no - load voltage, single - side magnetic force, loaded torque and axial force
其次，對轉子帶防護罩的高速永磁發電機數學模型進行了推導，介紹了利用有限元法對電機磁場進行分析的方法，並運用有限元軟體對一臺樣機的參數進行了模擬，包括電機磁場分析、空載電壓波形、單邊磁拉力、負載轉矩以及軸向力等方面的內容。 -
In the last part, the relationship of the field current with the operational factors of the turbo generator is difficult to express exactly, belonging to the complexity of building the generator model and the difficulty of identifying generator parameters, gp algorithm is presented, which is better than other method in symbol regress
由於發電機的建模與參數辨識困難，發電機勵磁電流和機端量之間的關系難以用精確的數學表達式來描述。利用gp演算法在符號回歸中的應用，得出發電機勵磁電流和機端量之間的關系表達式，用於故障診斷，並通過算例驗證了該方法是有效的。 -
The surface semi - conducting layer is widely used to control the electric field and suppress the surface corona discharge in both hv power cable termination and the end turns of hv generator stator winding
摘要表面半導電層結構可以均勻電場和抑製表面電暈放電，因此被廣泛應用於高壓電力電纜接頭和高壓發電機定子線圈端部絕緣中。 -
Powerformer is a new high voltage generator ， which use xlpe cable as stator winding instead of rectangular conductor bars ， thereby it overcome the shortcomings which the shape of these conductors results in an uneven electric field distribution with high electric field strenghs at the corners especially and prevents the output voltage of the conventional generator from exceeding about 36kv powerformer offers a direct connection to the network without the need for a step - up transformer as a consequence, there are some merits in the total plant equipped with powerformer, such as high effiency, high availability, low maintaining cost and giving less environmental impact
Powerformer是一種新型的高壓發電機，它採用電纜代替矩形導體作為定子繞組，從而克服了矩形導體電場分佈不均勻，特別是在矩形導體在導體拐角處電場過于集中而使常規發電機的輸出電壓等級不能高於36kv的缺點，使其能夠直接和輸配電網相聯，這樣就不需要升壓變壓器，同時也使裝配powerformer的電廠具有如下優點高效率、可利用率提高、維修費用降低和降低了對環境的負面影響。 -
Based on the dds technology, the waveform generator first stored data in high speed ram, then used dac to synthesize waveform by the data. many waveforms could then be generated easily. besides, the wave generator could get high performance on frequence resolution and stability, phase continuum, relative bandwidth etc. the dds technology was widely used in frequence synthesis field
基於dds技術的波形發生器以高速存儲器作為波形數據查找表、通過高速d / a轉換器對存儲器的波形進行合成，可以靈活產生多種波形，同時具有頻率解析度高、頻率穩定性好、頻率轉換快、相位連續性好以及相對帶寬較寬等特點。 -
Automatic generator field regulator
發電機磁場自動調節器
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