harmonic content 中文意思是什麼

harmonic content 解釋
諧波含量
  • harmonic : n 1 【音樂】泛音；和聲。2 〈 pl 〉【數學】諧函數，調和函數。3 【物理學】諧波，諧音。adj 1 和睦的...
  • content : n 1 容積，容量，含量，【數學】容度；收容量。2 【哲學】內容 （opp form）；要旨，真意。3 〈pl 〉內...
  1. The analysis results show that : the frequency characteristic curve assumes the downtrend, so the electrical energy measurement of the induction meter will produce biggish error when the content of the harmonic is big, no matter taking the whole energy as measurement standard or basic wave energy

    研究分析結果表明：感應式電能表的誤差頻率特性曲線呈迅速下降趨勢，因此在電能計量中，不管是以全能量為計量標準還是以基波能量為計量標準，當諧波含量較大時對感應式電能表的電能計量將會產生較大的影響。
  2. A novel three - level ac chopper is proposed, which is a new multi - level converter applied to high voltage conversion, and utilizes more electric levels to form output voltage and decrease the harmonic content of output waveform

    摘要提出一種用於高壓電能變換的新型三電平交流斬波電路，該電路允許使用低電壓等級的器件完成高壓電能變換，並採用較多的電平數去逼近所希望的波形，使輸出電壓或電流的質量大大提高，諧波含量減少。
  3. Using monthly temperature and rainfall data of 160 stations in china and global sea surface temperature and heat content data, diagnostic analysis is performed by means of harmonic analysis, correlation analysis, svd and corresponding statistical significance test methods

    利用全球海溫、熱含量、中國160站月平均氣溫和降水資料，通過周期分析、相關分析和奇異值分解（ svd ）以及相應的統計學顯著性檢驗方法，分析比較了全球海洋熱狀況與氣候異常的相關聯系。
  4. The multi - level ( ml ) converter has the advantages such as low voltage stress for power devices, smaller output filters and reduced harmonic content of the output voltage, it is very suitable for high voltage and high power conversion applications

    多電平變換器具有電壓應力低、輸出濾波器小及輸出電壓諧波含量小等優點，特別適合於高電壓大功率的應用場合，近年來正受到越來越多的關注。
  5. Pure sine wave output. current harmonic content is small

    輸出純正弦波，電流諧波含量小。
  6. The series h - bridge multilevel converter has the advantages of high output voltage, high power, lower harmonic content in line and motor sides and high input power factor

    串聯h橋多電平變頻器具有輸出電壓高、功率大，輸入側和輸出側諧波含量小，輸入功率因數高等特點。
  7. The content of this theme is as follows : without time, without open, without stopping railway transport, and without interrupting traction current of block tested, meanwhile track circuit parameters in electrical and no electrical blocks is measured of on - line, dynamic and real - time. these parameters include voltage of fsk signal, voltage of industrial and harmonic wave interference, upper frequency, lower frequency, carrier frequency and low frequency 18 messages frequency

    本課題研究內容：在不要點，不開天窗，不中斷行車，不中斷被測區段牽引電流的情況下，在線、動態、實時測量電化區段和非電化區段的移頻信號電壓、工頻干擾電壓，移頻信號（調頻信號）的上邊頻、下邊頻、載波頻率、以及低頻18信息頻率等參數。
  8. Its content may be separated into two parts. the first part contains chapter one and chapter two, which treat of the harmonic maps from surface into symplectic groups and quaternion grassmann manifolds. the second part contains chapter three and chapter four, which treat of local isometric immersions from space forms or riemannian products of space forms into space forms

    全文分四章，內容可分為兩部分：第一部分包括第一、二章，主要論涉從曲面到辛群及四元grassmann流形的調和映射；第二部分包括第三、四章，主要論涉從空間形式或空間形式的局部riemann積到空間形式的局部等距浸入。
  9. People can easily design the hysteresis current control hardware circuit, but the switching frequency is variable which makes us difficult the design the output filter, moreover the output waveform is not good. the space vector modulation techniques, by selecting the zero vector properly, it can reduce the harmonic content of the output voltage, so it has become a popular control method

    滯環電流控制的硬體電路設計簡單，但存在開關頻率不固定，輸出濾波器設計困難，輸出波形質量差，空間矢量控制（ svm ）技術具有較高的電壓利用率，且通過對零矢量的合理控制可以降低諧波含量或降低開關損耗，因此是一種較好的控制方法。
  10. As to the video signal, alarm signal, control signal, are all weak electricity signal, exceedingly easily be subjected to the jam, in case the power supply system does not steady, wave propag ation is greatly, the harmonic content of power source overtops, the veins wave factors are great unduly, and even power source equipment breakdown, outputting abnormal, will be about to affect the video signal image effect, and dependability cuts downs to the security and alarming system. we adopt fast fu lye ' s mutation rule - fft alternatives, by the way of carrying fft alternatives to the local junction circuit, regulated power supply, ups ' s power source, and switch power source, thereby diagnose every degree harmonious wave content of power souse, and abnormal coefficient, compared to the normal working situation. thereby diagnose out the working condition of the regulated power supply, ups ' s power source, and switch power source

    如果有供電系統不穩定、波動大，電源的諧波含量過高，紋波系數過大，乃至電源設備損壞、輸出異常等情況出現，將會嚴重影響視頻信號的圖像效果，大大降低防盜系統的穩定性和可靠性，我們採用快速傅利葉變換原理，即fft變換，通過對市電、穩壓電源、 ups電源、開關電源等的電壓信號進行fft變換，從而得出信號中各次諧波的含量及信號畸變系數，並將其與正常工況下的參數進行對比，從而進一步診斷出穩壓電源、 ups電源、開關電源等設備的運行狀況；組成監控系統的設備長期處于工作狀態，往往由於設備散熱條件不好、設備老化故障等原因導致設備表面溫度過高，從而影響設備的正常運行，降低設備的使用壽命。
  11. Harmonic analysis can be produced in as little as 10 milliseconds, or measurements may be integrated over more than a day. the user may set any measurement interval, perform synchronous averaging on harmonics, and even perform full spectrum analysis to detect non - harmonic signal content. the system s main processor controls all display, data storage and i o functions, thus allowing each channel to perform its analysis at maximum speed

    在每通道雙數字信號處理器結構中，結果形成超快速諧波分析，諧波分析可於至10毫秒產生，或可綜合測量超過一天，用戶可設定任何測量區間，執行諧波同步平均，及進行全頻譜分析從而探測非諧波信號內容，系統的主微處理器控制全部顯示數據儲存與i 0功能，故使各通道可於最高的速度下進行分析
  12. Its principle is analyzed in this paper, and the relation of phase shifted angle, the amplitude of each harmonic content and the thd is also analyzed in detail. then the system is simulated in matlab. in the end, this paper analyses and designs the power and the control circuit by taking a 2kva inverter for an example

    本文分析了工作原理，並對移相角與輸出各次諧波的幅值， thd的關系做了詳細的理論分析。同時運用matlab對系統進行了模擬，最後本文以一臺2kva逆變器為例，分析設計了功率電路和控制電路。
  13. In the second one, the input current displacement angle is dynamically modulated as a function of positive and negative sequence components of the input voltages. in both cases, the harmonic content has been evaluated analytically

    第二種方法中，輸入電流矢量根據輸入電壓正、負序成分進行動態調制，並對兩種情況下的輸入電流的諧波成分都進行了分析。
  14. The inverter apparatus controlled by pre - set voltage adjustment project has the advantages of low harmonic content, high output frequency precision, simple control circuit. therefore, this kind of project is the hot point in inverter power studying field

    用「開關預置式電壓調節方案」控制的逆變電源具有輸出諧波含量低、輸出頻率精度高、控制電路簡單等優點，是逆變電源研究領域的熱點。
  15. Harmonic content of an a. c. power supply

    交流電源的諧波含量
  16. Recently, along with the broad application of power electronics technology, many non - linear loads are used continuously in power systems, which make harmonic content rising rapidly, voltage shape distorting badly and power quality descending

    近年來，隨著電力電子技術的廣泛應用，非線性負載不斷引入電力系統，造成電力系統中諧波含量急劇上升和電壓波形嚴重「畸變」 ，致使電能質量下降。
  17. Multilevel ( ml ) converters have been attracting more and more attention because they have the advantages such as low voltage stresses for power devices and reduced harmonic content of the voltage waveform. they are very suitable for high voltage and high power conversion applications

    多電平直流變換器由於其開關管及二極體的電壓應力低、輸出電壓諧波含量小等優點，特別適合於高電壓大功率的應用場合，近年來正受到越來越多的關注。
分享友人
分享到 Line

分享到臉書