電力頻率 的英文怎麼說

中文拼音 [diànlìbīnlǜ]
電力頻率 英文
power frequency
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 電力 : [電學] power; electric power電力變阻器 power rheostat; 電力捕魚 electrofishing; 電力潮流 directio...
  • 頻率 : frequency; rate
  1. The paper analyses the principle of variable frequency source and brings forward that using electric electron technology make variable frequency output, and using high power dynatron that is parallel connection magnify power

    文中對該變頻電源的工作原理及主要硬體作了較詳細的介紹；提出利用電力電子器件實現輸出大功率。
  2. The main features of the apparatus are focus on small volume, light weight, no iron core, no magnetic saturation and no ferreous resonance, moreover, related advantages such as the large range of transient and frequency response, excellent electrical magnetic compatibility, oil - free configuration, reliable insulation structure, are all the trends of current transformer in the future. meanwhile, it should agree with the future power gauge and digital, computer, automatic relay protection. it will meet the demand of digital power network

    它具有體積小、重量輕；無鐵芯、不存在磁飽和與鐵磁諧振問題；動態響應范圍大，頻率響應寬；抗電磁干擾性能強；無油化結構、絕緣可靠、價格低等優點；是未來電流互感器發展的方向，是新一代電力數字網發展的需要，適應電力計量和保護數字化、微機化和自動化發展的潮流。
  3. By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent

    最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。
  4. The experiment apparatus has been developed, which is based on software ( labview ) and hardware ( pci board ni 6024e ). the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages, frequents and various waveforms which include square, sinusoidal, and triangular wave

    實驗選取了不同電壓幅值，不同頻率的方波、三角波、正弦波三種波形作為電激勵信號，利用高速攝像記錄ipmc的位移變形，並通過力傳感器實測了ipmc試樣末端的輸出力。
  5. It is concluded that maximum bending displacement becomes larger as the input voltage gets larger and the frequency becomes lower, while the curve of bending displacement is affected by waveform. in comparison with the little effect by various waveforms, the generative force at the tip of the ipmc actuators increases as the input voltage gets larger and the frequency becomes lower

    結果表明，電壓幅值和頻率對其位移變形的大小影響較大，波形對其位移變形的軌跡影響較大;電壓幅值和頻率對其輸出力的大小影響較大，而波形對其輸出力影響較小。
  6. Accompanying power system reformation, chongqing power network will be merged into the middle china power network. according to national " power attempt communicating center assessing measure, chongqing power network modulates not only network frequency but also the power of chuan yu - the middle china network alliance line

    伴隨著電力體制改革的推進，重慶電網即將併入華中電網，按照國家電力調度通信中心頒發的考核辦法，重慶電網既要承擔調整電網頻率的任務，又要承擔調整川渝?華中電網聯絡線功率的任務。
  7. Abstract : the paper presents the study on problems of self - excitation ， over - voltage ， frequency and voltage stability ， organizational measures and arrangement in the course of black start and restoration of the system. through simulation of black start on east china power system ， above problems are analyzed and solved ， it shows that working out strict black start scheme may not only speed up system restoration ， reduce outage losses ， but also have important significance to emergency release or power system islanding

    文摘:研究電力系統黑啟動的過程及恢復中存在的自勵磁、過電壓、頻率和電壓穩定、組織措施及安排等問題，並通過華東系統黑啟動模擬對上述問題進行分析和解決，證明制定嚴格的黑啟動計劃不僅可以迅速恢復系統、降低事故損失，而且對處理緊急狀態或地區性解裂有重要意義。
  8. Standard test method for alternating - current magnetic properties of amorphous materials at power frequencies using wattmeter - ammeter - voltmeter method with sheet specimens

    帶片狀試樣使用電力表-測量表-電壓表方法在電源頻率下非晶材料的交流電磁性能的標準試驗方法
  9. 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。
  10. Concerning the problem of the frequency instability, slight but not negligible, in electric power system, this paper discusses the resultant error in measurement in detail and develops an error - correction interpolated algorithm in frequency domain. taking advantage of the high calculating speed of pc, the measurement error in frequency, amplitude, and phase are well eliminated

    本文針對電網頻率輕微但不可忽視的不穩定造成的測量誤差問題進行了詳細的討論，形成了一套在頻域實現誤差校正的方法?插值演算法，並利用pc機高速的數據處理能力軟體校正了各次諧波的頻率、幅值及相位。
  11. In an am transmission the carrier wave is constant in frequency and varies in amplitude ( strength ) according to the sounds present at the microphone ; in fm the carrier is constant in amplitude and varies in frequency

    在調幅的傳播中，其負載電波頻率是恆定的，但波幅（力度）隨著麥克風聲音變化而變化；在調頻的傳播中，其負載電波波幅是恆定的，而頻率隨著麥克風聲音的變化而變化。
  12. Thus, it is difficult to find the voltage reference for the harmonic analysis. since acem are always operated near to the synchronous speed, the frequency of the excited voltage is very low, even to zero. therefore, this is the power harmonic suppression study of a complicated power supply system, in which the about harmonic general theories and methods are all inapplicable

    現代交流勵磁電機（ acem ）採用電力電子變流器作為勵磁裝置，其勵磁電壓諧波含量豐富，難于獲得諧波分析所需的電壓基準，同時交流勵磁電機經常工作在同步轉速附近，致使勵磁電壓頻率極低甚至為直流，通常的諧波檢測方法和理論都無法適用，因而這是一種目前尚未深入探討過的復雜供用電系統電力諧波抑制問題的研究。
  13. Exposure to power frequency magnetic fields was estimated using a population - based jem which was specifically developed in the united states to assess occupational magnetic field exposure

    電力頻率磁場的職業暴露以美國特別針對職業族群所發展出來之工作矩陣進行評估。
  14. The railway power converter system will change the frequency of electricity produced by the e. on power plant to the lower frequency used by rail systems in central europe - from 50 hertz ( hz ) to 16. 7 hz

    該鐵路電力轉換系統將把e . on電廠產生的電力頻率轉換成在中歐鐵路系統所使用的更低頻率? ? 50赫茲到16 . 7赫茲。
  15. Jinque co. has developed neo - generation reliable frame - structure ups, which is high frequency and on - line intelligent and whose height is 19 inchs. the product adopts cpu process, so it has excellent ability to calculating and accurately test every control point to guarantee reliability of quality. at the same time, due to the design of double - change power, the voltage and frequency are stable ; the product deletes all kinds of interrupted frequency and becomes power of sine wave to provide vital equipment with better power environment

    金雀公司根據網路系統的電源要求，開發出新一代高可靠的19英寸機架式高頻在線智能型gr系列ups ，採用cpu處理器，極強的運算能力，精確迅速地檢測ups各控制點，由於採用雙變換電源設計，供負載使用的電源電壓頻率穩定，濾除雜讀的純凈正弦波電源，為重要的設備提供更佳的電源環境。
  16. On the base of it, a piece of data collection special chip with a core of fft is designed with vhdl ( vhsic hardware description language ) in the way of top down system design method, which can finish harmonic analysis and measure the voltage, current, frequency and power of the electric power system

    在此基礎上，使用標準的硬體描述語言vhdl設計出一個fft變換內核，並以該內核為核心、採取自上而下的系統設計方法完成了一個電力系統數據採集專用晶元的設計，實現對電力系統的電壓、電流、頻率、有功和無功功率等參數的測量以及各次諧波分析。
  17. We find that when the band width is suppressed to be much smaller than the field frequency, dynamical localization can exist in the system. the corresponding regions for the occurrence of dynamical localization in the parameter space can be found in the phase - diagram

    發現當帶寬被壓縮到比電場頻率小很多時，即系統的準能譜幾乎不存在色散時，動力學局域化仍然可以存在，相應的動力學局域化發生區域可以在相圖中找到。
  18. Both ip - iq approach and id - iq approach need low pass filters, as a result the accuracy of harmonic current detection is influenced by frequency drift. moreover, they both can only be used in three - phase power systems

    I _ p - i _ q法和i _ d - i _ q法都需要低通濾波器，因而會使諧波電流檢測精度受到電源頻率漂移的影響，而且這兩種方法僅適用於三相電力系統。
  19. The modle of linear compressor ' s dynamics was set up, influence on spring rate, damping coefficient and power frequency to linear compressor ' s performance were studied by numerical simulation and experiment, result of study has large guidance significance to design of linear compressor

    摘要建立了直線壓縮機的動力學模型，通過數值模擬和試驗研究了彈簧剛度系數、阻尼系數及電源頻率對直線壓縮機性能的影響，研究結果對直線壓縮機的設計有較大的指導意義。
  20. At last, the dynamic response characteristic in time domain of the ems on the frequency of the excitation force is given

    最後給出了時域內電磁彈簧剛度值對激勵力頻率的動態響應特性，設計了實現該電磁彈簧的結構框圖。
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