最大風力 的英文怎麼說
中文拼音 [zuìdàfēnglì]
最大風力
英文
maximum wind-
With the help of the electronic computers, engineers employ it to figure out nearly all kinds of engineering problems ranging from astronavigation, construction, waterpower projects, ship - building and mechanical engineering etc. owing to the strong power of finite element method, one kind of software pack which based on the method is exploited and named algor feas to resolve problems on structure analysis for trusses and shells. this paper also employ algor feas software pack to analyze and compute the cableway towers, giving the accurate result on stress and displacement both in location and whole. finally, we also bring out some advice on structure improving
在此分析過程中：首先將物理模型簡化為力學模型，主要是將塔架結構按空間桿單元簡化為空間桁架結構，目的是將力學模型變換為數學模型；這一過程主要是利用autocad2000建立塔架的計算模型；再者，利用algorfeas軟體包讀入autocad建立的塔架計算模型生成初始數據卡利用計算機進行編程進行風載計算，再將計算結論整合入algorfeas產生的初始數據卡中，生成計算數據卡；接著，利用algorfeas軟體包計算塔架在不同載荷情況下的應力圖，位移圖，並且求出在不同載荷條件下的最大位移和最大應力等；然後，對塔架的穩定性進行分析；最後；根據計算結果提出改進建議。Secondly, output powers are measured in the different wind velocity or the direction angle or angle speed for mechanics model. the optimal angle of the direction is determined. that is to say, output power is the maximum in this direction angle
其次，通過對風力發電機模型在不同風速、不同方向角、不同角速度的情況下輸出功率的測量，得出最佳方向角，即在該方向角處輸出功率最大。Zhejiang province panan county double sword plastic products co., ltd. untiring efforts staff, the company adheres to the highest style of prestige, give priority to customer ' s interests all the time, with sincere to for the letter, lower costs, make concessions in the customer, make great efforts to perfect service system, regard product quality as enterprise ' s life, the customer satisfies satisfiedly greatly for enterprise ' s top
浙江省磐安縣雙劍塑料製品有限公司全體員工將不懈的努力，公司堅持信譽至上的作風，始終把客戶利益放在首位，以誠為信，降低成本，讓利客戶，努力完善服務體系，視產品質量為企業生命，客戶滿意為企業最大滿足。Choose two nodes on the edge of the structural to compare the results calculating by the finite element program midas, then we can draw a conclusion that these kinds of space truss systems is sensitive to the libration of the dynamic wind loads. to consider this factor is very necessary in the process of design, we will use the pulsant augmentation coefficient to realize it
比較靜力風荷載和動力風荷載作用下的有限元軟體的計算結果，選取結構邊緣部分的兩個節點，對比它們在兩種方法計算下的最大位移的計算結果。經過比較可以看出重量輕、頻率低、阻尼小的柔性建築物對風荷載的橫向振動是很敏感的，在進行工程設計時應該考慮這種因素，並可採用乘以風振系數等相應方法來加以體現。In present dissertation, most stirpses are repartitioned and redefined, and the structure characteristic, course of formation, cause of formation, function and risk of stirpses are analyzed. the main conclusions are : [ 1 ] rapid development of corporations engenders urgent demand of financing, conflict between capital market imperfection and demand of financing leads corporations to control listed corporations by purchasing " shell " and enhance it ' s financing capability ; [ 2 ] two kinds of pricing institution of stock provides stirpses for controlling listed corporations by low cost, monitoring institution imperfections provides corporations for operating listed corporations. adjust of national assets provides more " shells " ; [ 3 ] more private corporations purchase listed corporations, some of them form stirpses ; [ 4 ] stirpses have positive influence about adjusting industry and enhancing capital market financing function ; [ 5 ] stirpses magnify financial risk by controlling listed corporations, and transform listed corporations from shareholders benefit to block shareholder benefit, having tendency of infracting shareholders benefit
本文主要的結論： [ 1 ]中國企業的迅速發展對融資有迫切的要求，中國國內資本市場發展不完善與這種強烈的融資需求的沖突導致了企業尋求通過買「殼」的方式控制上市公司，以此來提高自身的融資能力； [ 2 ]中國上市公司股票的兩種定價機制為「系」低成本控制上市公司提供了可能，監管機制的不完善為「系」提供了操縱上市公司的空間，國有資產在調整過程中從部分競爭行業退出，為資本市場提供了一定數量的「殼」資源； [ 3 ]民營企業紛紛買「殼」上市，在這個過程中，部分實力突出的企業形成了「系」 ； [ 4 ] 「系」現象對進行行業整合、提高資本市場融資能力等方面起到了積極的作用； [ 5 ] 「系」通過對上市公司進行的操縱放大了金融風險，將上市公司的股東利益最大化變為大股東利益最大化，存在著侵害小股東利益的潛在傾向。The analysis of the repeated test data shows the maximum deviation of air drag coefficient is less than 0. 88 % and the deviation of the most surface pressure data is within 1 %, it illustrates the test data is reliable
重復試驗的數據分析表明，空氣阻力系數數據的最大偏差小於0 . 88 ，絕大部分測壓試驗數據的偏差均在1以內，這說明客車模型風洞試驗數據的精度較高。Therefore, the prestress of the cable should make sure that the cable is in the tight state in the entire process. the largest wind load which the prestressed cable truss can undertake is studied emphatically in the article
因此，索中初始預應力應能保證索在工作的全過程中始終處于張緊狀態，以此為條件，本文重點研究了預應力索桁架所能承受的最大風荷載值。Based on the analysis of commercial banks " current concept about fund management, this paper brings forward that fund management is the main - string in its operation, and that the concept of fund management, including security and profitability, is extended from current " forrying fund " to the management of the fund cost and fund risk the paper comprehensively discusses the principle of fund management, the management of fund costs, the tactics of management about fund liquidity, the measures of management about fund risks and how to solve the problems on interest risk in the period of frequent interest fluctuation. the paper puts forward ideas on how to improve the fund management. the security, liquidity and profitability of the fund, which are both contradictory and integrated with one another, are internal factors of fund management. fund liquidity is traditional core question. commercial banks face with a number of risks of witch credit risk is the greatest one because our country has adjusted interest rates 8 times since 1996, which covered a period of frequent interest fluctuation
商業銀行面對許多風險，但最大風險是信用風險。由於我國自1996年以來已連續調整了8次利率，近幾年是利率波動頻繁時期，研究利率的敏感性問題顯得特別重要。要改善資金管理，提高商業銀行的經營水平，就要建立資金管理是商業銀行經營主線的理念，對資金要統一規劃和管理；要改革銀行的體制，建立現代企業制度和法人治理結構，在體制上為資金管理提供有利的運行平臺；增加改善資金流動性管理所需的貨幣政策工具，擴大資金調控手段；打破貨幣市場的僵化局面，為資金管理創造有利的宏觀環境；續續優化負債結構和負債載體設計；增強資金信用風險規避和化解的措施；通過銀行資源整合，努力尋找資金的安全投放渠道，最終完成經營模式由傳統型向現代型的轉變。Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed
論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。Study of practical formula about strength and rigidity of 6 - point - supported - glass using the super sap fea software to solve different calculation models - which have different parameters, such as a / b, a / c and so on, this paper achieves a series maximum deflection coefficients and maximum stress coefficients, then form calculation formulas of maximum deflection and maximum stress under the load of wind
6點支承玻璃強度剛度實用的計算公式研究採用supersap有限元分析，求出不同的計算模型（玻璃板的尺寸參量a b ， a c不同） ，得出一系列最大撓度系數和最大應力系數，形成6點支承玻璃在風載荷作用下的最大撓度計算公式和最大應力的計算公式。Hurricane florence now has top sustained winds of nearly 80 miles an hour
現在，佛羅倫斯颶風最大風力時速已接近80英里。Forecasters say the storm had a maximum wind eed of 216 kilometers an hour before coming ashore
氣象部門說，登陸前的最大風力達每小時216公里。Forecasters say the storm had a maximum windspeed of 216 kilometers an hour before coming ashore
氣象部門說，登陸前的最大風力達每小時216公里。But china is also the world ' s fifth - biggest user of wind turbines, and the biggest consumer of the sort of solar panels used to heat water
但是中國還是世界上第五大風力發電國家，是使用民用太陽能熱水器的最多的國家。First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。Research of maximum power extraction algorithm for inverter - based variable speed wind turbine system is going on in the last chapter. main maximum power extraction algorithm is discussed and compared. a new mppt control algoririthm is discussed to get fast and stable traking of maximum wind power in detail, then advanced hill - climb searching method has been developed for maximum wind power traction
因此本文最後對一些最大風能俘獲的先進演算法進行了研究，仔細探討了最大功率點跟蹤演算法，並提出了一種先進爬山搜索風力發電最大功率俘獲智能演算法，採用該演算法不需測量風速和風機轉子速度，並且與系統特徵參數獨立，能應用於大小各種風機，具有非常好的效果。The biggest stress of glass plate appears around the hole, so the loading properties of point - supporting glass curtain are influenced by the stress states of hole ' s edge significantly
在風荷載作用下的其最大應力出現在孔邊，因此，孔邊應力狀態對點式支承玻璃幕墻承載性能有非常重要的影響。With the continuous enlargement in capacity of a wind - power generator, the efficiency improvement of electric power generation had been become more and more important. the variable - speed constant - frequency ( vscf ) power generation, which is served to reach maximum wind - energy capturing and utilization for a variable blade - pitch wind - turbine, is the studying hot - spot of the wind - power generation technique at present
隨著風力機組單機容量的不斷增大，提高發電效率已是風力發電研究的重要內容。採用變槳距風力機實現最大風能捕獲和利用的變速恆頻發電已成為當前風電技術的研究熱點。The structure dynamic reliability of reference period may be different when monthly, yearly and the reference period maximum wind loads are adopted
同時還分析了採用月最大、年最大及設計基準期最大風荷載對設計基準期內結構抗風動力可靠度的影響。Concentrating investment capital carries the greatest potential for high dividends, but also involves enormous risk as the failure of one or two companies could seriously damage your portfolio
集中投資的資本可能會帶來高額股利的最大潛力，但同時也伴隨著巨大的風險，因為一兩家公司的破產就有可能讓你的有價證券損失慘重。分享友人