波力發電 的英文怎麼說
中文拼音 [bōlìfādiàn]
波力發電
英文
wave power generation-
Traditional power line carrier communication has some shortcomings on communication quality, which let it does n ' t adapt to the dement of the power developing
電力線載波通信以電力線為載體，與其它通信方式比較有著特殊的優勢。傳統的電力線載波通信在通信質量上的缺陷使其不能適應電力發展對通信的要求。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。The tailrace surge chamber shared by two units, common in hydropower stations with diversion systems, has problems of water level fluctuation and hydraulic disturbance
摘要雙機共尾水調壓室是水電站引水發電系統中一種常見的布置形式，存在尾水調壓室水位波動和水力干擾問題。This paper deduced the harmonic parameter models of electrical transformers, generators, transmission lines and electrical loads in detail
本文較為詳細的推導了電力變壓器、發電機、輸電線路、電力系統負荷等的諧波參數模型。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。The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details
本項優化試驗研究的目的主要在於，通過泄洪系統整體水力學試驗，校核泄洪洞的泄流能力；通過發電引水系統整體水力學試驗，研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況；確定快速閘門井內水位波動幅度；試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。Mathematic model of wtg has been established which includes wind turbine, induction generator, thyristors, synchronous 6 - pulse generator and so on. the numerical simulation curves on the 275kva wtg are given
建立了由晶閘管控制的風力發電機軟並網系統模型，以一臺275kva的發電機為例進行了模擬，給出了起動和並網的模擬波形。Specification for power line carrier transceiver dedicated to protection
繼點保護專用電力線載波收發信機技術條件The generator is verified to be of well performances by experiment. the third part concerns the control system of pm generator in vehicle application by commutating and inversion. considering the development of future power supply of auto electric system and the economizing on energy, the multi - voltage power supply system for future autos power supply system is introduced, and the design is given in detail
最後，結合現代電力電子技術，利用整流橋、逆變器、 mosfet等元器件設計並實現了車用永磁發電機恆壓輸出控制；從未來汽車電氣系統的發展方向和高效節能方面考慮，提出未來汽車的多電壓供電系統的典型配電模型，並對該模型進行具體設計，實現多電壓供電的功能，並給出了控制線路中各主要部分的波形。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。The oversimplified models can not reflect the mutual effect of hydraulic system and power system, and they may cause irrational conclusions when they are used in the studies on middle or long term stability, resynchronization of hydro turbine and generator and large - disturbance surge tank system that relate closely to the mutual effect of hydraulic system and power system or the auto governing
採用這種水或電的單方面簡化模型不能準確反映水力系統與電力系統的耦合作用，對于諸如電力系統中長期穩定、水輪發電機組再同步、調壓井系統大波動穩定等這些與水電耦合和自動調節作用密切相關的問題的研究，可能導致不合理的結論。In this paper according to the design scheme of yao heba power station in nan yahe river, the mathematical model with longer and complicated conduit system, elastic water hammer and pid regulating low of voter turbine adjusting system in the case of the small fluctuation has being built, which include conduit system, surge tank, draft tube, water turbine, generator and governor. the hydraulic losses are taken into account, and nonlinearization in water turbine and the governor is also taken into account
本文根據南椏河姚河壩水電站的設計方案，對水輪機調節系統，按長引水管道復雜引水系統、彈性水擊、調速器為pid調節規律，在小波動情況下，對包括引水道、調壓井、尾水管、水輪機、發電機、調速器在內的水輪機調節系統建立數學模型，並計及引水管道水力摩阻損失，對水輪機、調速器考慮了其中的非線性，利用功能強大的matlab軟體編制了源程序進行計算機模擬計算。This paper discussed the harmonic sources and how they produce harmonic in detailed, such as generator, transformer, power electronics apparatus and others
本文較為詳細的討論了發電機、變壓器以及電力電子器件等一些諧波源，對其產生諧波的機理作了一定的描述。The widely applications of nonlinear instruments have produced many high order harmonics, they are flowing into the power network and greatly influence the quality of electric power. and the frequency is n ' t constant but changed around 50hz
電網中非線性設備的使用日益增多，所產生的高次諧波電流大量注入電力線路中，使得電網電壓、電流波形發生畸變，同時電網頻率並不是固定不變的，而是在50hz附近波動。High quality epitaxial sto / ybco multilayers can be fabricated due to their similar crystal structure and small lattice parameters mismatch. the filter made from sto / ybco thin films shows high tunable speed, low microwave loss and high power handling capability. so sto / ybco multilayers have attracted much interests for electronically tunable filter in the last decade
因此，利用高質量sto / ybco外延薄膜研製的濾波器具有響應速度快、微波損耗低、調諧范圍大、承載功率高等優點，是一種極具競爭力的電調濾波器技術方案，也是當前的研究熱點和開發重點。In practical studies, finally, a hybrid active power filter based on the digital signal processor ( dsp ) and intelligent power module ( ipm ) was set up, including a cycloconverter acem. based on the experimental set - up, plenty of experimental studies were conducted. the experimental results demonstrate that the self - adaptive technique, the topology of series connected hybrid power filter and the corresponding significant technologies described above are feasible and practical
最後，實際研製了一套以dsp （高速數字信號處理器）和ipm （智能功率模塊）為核心的小功率混合型有源濾波裝置，在交交變頻acem實驗平臺上進行了全面的實驗研究，充分驗證了本文所提出的自適應同步相關濾波技術、優化混合型濾波器拓撲結構和有關的關鍵性技術的正確性和實用性，從而從理論到實踐全方位、成功地實現了對交流勵磁發電機輸出電力諧波抑制的研究。The pulse width trigger circuit, trigger delay circuit are discussed. and a new kind of peak detection module which is implemented by verilog hdl in fpga and greatly enhances the performance of catching glitch is discussed in the dissertation. the waveform recorder function accomplished in the scopemeter can test, monitor slow analog signals and record the characteristic value of signals continuously for a long time
本文討論了脈寬觸發電路和觸發釋抑電路的實現，採用veriloghdl在fpga中實現了一種峰值檢測模塊，提高了示波表的毛刺捕捉能力，設計的波形記錄（ recorder ）功能模塊能夠對輸入的模擬信號進行長時間連續不斷的采樣量化，並記錄波形數據和及時送顯示。Today, mw wind generators substitute 600kw generators gradually and become the popular units of international market of wind power generation. the trends of units are variable speed constant frequency and large - scale and pitch control. there are many different generators which are variable speed constant frequency generator. in this paper the unit is fully - fed magnet wind turbine generator. the magnet wind turbine generator grid - connected inverter is the key component of connected system. the main function of this component is inverting the dc to three - level volage and connecting the electric net
實現變速恆頻發電的方法眾多，本文研究的是較常用的一種方案。該方案採用直驅永磁風力發電機通過變頻器直接連接到電網。永磁風力發電機並網逆變器是並網發電系統的核心部分，其主要功能是將經過整流、斬波升壓后的直流電逆變成三相交流電，並送入電網，實現並網。The ultrasonic inspection method for casting tee joint and elbow in power plant
火力發電廠鑄造三通彎頭超聲波探傷方法This exhibit looks at the principles and science behind the main renewable energy technologies including solar energy, wave and tidal energy, geothermal energy, wind energy, biomass energy, hydroelectricity and energy from waste
這展品講述主要的可再生能源科技包括大陽能、波浪及潮汐能、地熱能、風能、生物能、水力發電和廢物能背後的科學原理。分享友人