harmonic converter 中文意思是什麼

harmonic converter 解釋
多諧變流器
  • 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...
  • converter : n. 1. 使轉變[改變信仰]的人。2. 改裝者，改裝品。3. 【冶金】煉鋼爐，吹風轉爐；【電，無】換流器，變壓器；變頻器；【自動化】變換器；密碼翻譯[編制]機。
  1. Chaotic switching modulations introduce low - frequency harmonic spectrum of output voltage as random switching modulation. in some case, low - frequency noise ripple offset the effect chaotic switching modulations reduce the level of emi. it indicates that the ccfmfd integrates the advantages of spreading harmonic power at the multiples of the switching frequency and not introducing significant noise ripple at low - frequency range. among all chaotic switching modulations, the ccfmfd is considered as the best choice in applying to dc / dc converter

    與隨機調制模式相同，混沌開關調制模式也引入輸出低頻噪聲紋波，有些情況下低頻噪聲紋波可能抵消混沌開關調制降低emi水平的效果。分析表明： ccfmfd模式具有較好的降低emi水平和引入較小低頻紋波的優點，可以作為混沌調制模式較佳的選擇。
  2. Secondly, the mmic 20 - 40ghz hmmc - 5040 amplifier is used to realize the phemt frequency converter. the feasibility of up / down converter using phemt sub - harmonic mixing is validated by the experimental results. at last, on the base of phemt multiplying, amplifying and gate mixing, the

    之後研究了採用hp公司的20 - 40ghz放大器晶元（ hmmc - 5040 ）設計製作phemt （ pseudomorphichighmobiletransistor ）變頻器，通過測試，給出了實驗結果，並通過實驗驗證了採用phemt二次諧波混頻模式，實現上下混頻的可行性。
  3. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  4. Pwm converter has low efficiency at light loads and high amplitude harmonic. on the other hand, the control circuit and filter for pfm are much complex

    Pwm調制模式的spic在輕載下效率較低，控制脈沖諧波峰值較大; pfm控制電路較為復雜，后續濾波器設計困難。
  5. The correlative items of dc filters are researched on the basis of gezhouba - shanghai hvdc transmission project. in the analysis the three - pulse model is used to simulate converter, which takes into account the impact of the stray capacitance. the harmonics distribution on dc lines is simulated accurately, especially the harmonic ignored in old models

    本文以葛上直流輸電工程為基礎，研究直流濾波器設計中的相關問題，採用考慮了雜散電容的三脈動模型來建立換流站模型，更為準確地模擬出直流輸電線路上的諧波分佈情況，尤其是模擬出舊模型中忽略的次（為自然數）諧波，為直流濾波器的設計提供了更精確的數據和判斷依據。
  6. The harmonic voltage at zero power test of longquan hvdc converter station is calculated

    摘要計算了龍泉政平hvdc工程龍泉站系統試驗期間零功率試驗時的諧波電壓。
  7. 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。
  8. 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。
  9. 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。
  10. In the system, a tunable dioxide laser is used as a sensor source, and the method of wavelength modulated is adopted, then concentration of gas is determined through detecting the generated second harmonic by opto - electronics converter

    用可調諧二極體激光作為傳感光源，採用波長調制方法，通過對諧波信號進行光電探測可得氣體濃度。
  11. According to the mechanism characteristics of the ac motor, with zero - voltage switching technology, the pdm converter mathematical models both the pwm and rectangular wave control mode are given in this paper. and the voltage and current harmonic analysis and the simulation waveforms of the output voltage, current and power are also described respectively

    根據交流電機在恆轉矩區和恆功率區的特性，結合零電壓開關技術，分別給出相應的脈寬調制控制（ pwm ）方式和方波控制方式下的高頻交流脈沖密度調制變頻器的數學模型，電壓和電流的諧波分析以及輸出電壓、電流和功率的模擬波形。
  12. The validity and superiority of all these are proved by use the parallel converter of novel upfc to implement reactive current compensation, zero sequence and negative sequence currents compensation, harmonic currents compensation and the mixed compensation of them. this thesis also studies that use novel upfc to implement two phases operating in high - voltage transmission lines by theory analyze and simulation testify

    提出了基於多電平變換器的廣義大功率有害電流補償的概念，提出了適合於它的多環定時滯環控制方案，通過用新型upfc的並聯變換器實現無功補償、零序和負序補償、諧波補償及它們的綜合補償來驗證了其有效性和優越性。
  13. This paper discusses the problem of harmonic waves of the converter in running, and the countermeasures are also proposed

    摘要本文針對變頻器運行中存在的諧波問題，分析諧波產生的原因及危害，並提出解決方法。
  14. These harmonic current will inflow in the ac power system through the converter transformers and effect the normal operation of ac / dc system without any limitation

    這些諧波電流通過換流變壓器網側注入交流系統，如果不加以控制，會影響交、直流系統的正常運行。
  15. Phase - shifting reactor - a new method for converter power supply systems harmonic suppression

    變流器供電系統諧波抑制的一種新方法
  16. Harmonic components of the input current in method 2 is lesser than method 1, neglecting the losses and switching effects of the converter. the decreation of the harmonic components is not apparent, but different between method 2 and method 1, due to the influence of switch losses of the igbt, which is consisted of two igbt and two frd

    當模擬模型中的雙向開關由兩個igbt和兩個快恢二極體組成時，由於igbt的開關損耗等因素對輸入電流的影響，在模擬得到的輸入電流頻譜圖中，諧波成分的減小不是很明顯，但調制策略方式2和方式1的諧波成分仍有所不同。
  17. Realizing the suppression of harmonic waves and ripple waves by adopting multiple input dc dc converter

    變換器實現對諧波和紋波的抑制
  18. The harmonic standard of 18kv side ( sfc ) and sookv are deduced from principle of design of chinese harmonic standard. in chapter three six - pulse and twelve - pulse sfc and the relation of control angle and phase - shift angle of the converter are analyzed. harmonics model of pumped storage power station are established by saber simulation program

    第二章通過分析國內外諧波限制標準，闡述了國家諧波限制指標的制定原則及推導；針對大型抽水蓄能電站及sfc裝置的特殊性，對其諧波限制指標進行討論，討論推導出了sfc裝置18kv側和抽水蓄能電站網側500kv的諧波限制指標。
  19. Therefore, the study on single - stage pfc and converter technique has important significance for restraining harmonic pollution, founding green power supplies and realizing miniaturization and lightweight of switching power supplies

    因而研究單級功率因數校正及變換技術對抑制諧波污染，開創綠色電源，以及實現當今開關電源的小型輕量化具有重大意義。
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