諧波環流 的英文怎麼說

中文拼音 [xiébōhuánliú]
諧波環流 英文
harmonic circulating current
  • 諧 : Ⅰ形容詞1 （和諧） in harmony; in accord; in tune 2 （詼諧） humorous Ⅱ動詞（商量好; 辦妥） come t...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 環流 : [氣象學] circulation; circulating current; circumferential motion; circular current; ring current...
  1. Monitor apparatus can measure valid value of three phase voltage and current, power factor, three phase disequilibrium, instant flecker of short time and harmonic without twenty, degree and harmonic distortion total. the paper are laid on the following. ( 1 ) master plan and function of circuit, ( 2 ) hardware design including circuit and principle of a / d conversion, phase lock, liquid crystal display and keystroke and so on, ( 3 ) design of system software including digital filtering, fft, a / d conversion and monitor interface of pc, ( 4 ) system test

    監測儀能夠完成包括三相電壓、三相電流的有效值、功率因數、三相不平衡、電壓短期閃變、以及20次內的諧波、諧波相位、諧波失真總量等的測量。論文重點介紹了以下幾部分： （ 1 ）電路的總體設計和功能； （ 2 ）硬體設計，包括a d轉換、鎖相環、液晶顯示和按鍵輸入等原理和電路。 （ 3 ）系統軟體設計，包括a d轉換、 fft 、數字濾波等程序的原理和演算法以及上位機監控界面的設計； （ 4 ）系統測試。
  2. Just following this, are studies on power factor of inverters and the sharing of harmonic circulating current among units of a parallel operating inverters system

    在此之後，本文又深入分析了逆變電源的功率因數以及並聯電源系統的諧波環流均分控制。
  3. The harmonic circulating current balancing is an important factor in the parallel operating control for it makes the units of the system to get. an equal power factor and makes foundation for the system to work stable and reliable

    並聯電源系統的諧波環流均分控制是實現負載的失真功率均分，保證各並聯單元的輸出功率因數均衡，保證並聯系統穩定可靠工作的一個重要方面。
  4. The temporal and spatial variations of summer precipitation anomaly in northeast china ( nespa ) are studied, and its relations with contemporary circulation anomalies over north pacific ( np ) and sst departure of pacific on the interdecadal and interannual scale are discussed by means of harmonic analysis, reof and svd

    採用諧波分析、 reof 、 svd等方法分析了東北夏季降水異常的時空特徵，並按年代際、年際尺度分析了它與同期北太平洋區域對應尺度環流、相關海表溫度異常的聯系。
  5. In this paper, a full digital active power filter based on dsp is designed. computing of instruction current and controlling of system are realized in one dsp

    本文設計了基於dsp晶元的全數字化控制方案，該方案用一片dsp晶元實現諧波指令電流計算和控制環節。
  6. According to the experimental parameters of mpt, the main performance parameters of different propellants have been given by engineering performance computation under designed and working states, which has great importance for the experimental research and the future work. 2. for helium and argon, the factors which influence on mpt ' s vacuum steady work have been discussed such as the material of microwave tie - in, the distance between the probe and inner - conductor, the position of the inner - conductor, the input power of microwave, the mass flowrate of propellant and the vacuum pressure of environment, and the influence has been discussed of the microwave power and the mass flowrate of propellant on the pressure of the resonance cavity, thrust, reflected power and the temperature of the resonance cavity

    論文的工作和新見解主要包括： 1在設計狀態和工作狀態下，根據mpt的實驗參數，對mpt使用不同工質時的性能進行了工程估算，這對mpt現階段的實驗研究和今後的研究有重要的指導意義； 2對于he 、 ar推進工質，討論微波的接頭材料、探針與內導體的間隙、內導體的位置、微波的輸入功率、工質的質量流量以及環境真空度對mpt真空啟動和穩定工作的影響，並探討微波的輸入功率、工質的質量流量對諧振腔壓強、推力、反射功率以及諧振腔溫度的影響； 3對于n _ 2 、 h _ 2 、 nh _ 3 、 h _ 2o推進工質，主要討論與he 、 ar工質不同的特性，並從長遠的眼光和工程應用的角度，認為其可行性不容置疑，潛在優勢不可忽略，是未來mpt應用的主流推進工質。
  7. The extensive application of power electronics devices in power system 、 industry 、 traffic and family brings serious current harmonic, this harmonic pollution harms to system and electromagnetism environment. so power factor correction technology becomes a new research hotspot

    隨著各種電力電子裝置在電力系統、工業、交通及家庭中的應用日益廣泛，電網的電流諧波問題也日益嚴重，諧波污染給系統本身和周圍的電磁環境帶來了一系列的危害。
  8. For a class of shunt - wound active power line conditioner, based on analysis of mathematical model of system and target of control, the algorithm of fuzzy variable structure sliding mode control is presented. the control algorithm can avoid complicated calculation of harmonic electric current in traditional control algorithm, and realize the feedback control of electric current. the algorithm is simple and easily implemented

    針對一類並聯型有源電網調節器在分析系統數學模型和控制目標的基礎浙江大學博士學位論文上，提出了模糊滑模控制策略，避免了傳統控制方法中復雜的諧波電流計算，實現對電源電流的閉環控制，該演算法簡單、易於實現，模擬結果證實了變結構滑模控制的有效性。
  9. According to the features of the signal of cmf, i. e. the signal frequency varies in a small range and the signal is subjected to the harmonics, a digital method based on a digital phase locked loop is used to process the signals of cmf, tracks the change of the signal frequency and calculates the phase difference. the technique proposed by the u. s. patent has been improved and made the simulation

    針對科里奧利質量流量計信號的特點，即信號頻率在小范圍內變化和信號易受諧波干擾的特點，採用基於數字鎖相環的方法處理科氏質量流量計的信號，跟蹤信號頻率的變化，計算相位差，對美國專利提出的方法進行了改進，並作了模擬。
  10. 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。
  11. A closed - loop detecting approach of harmonic and reactive current based on instantaneous reactive power theory is proposed, its base design rules are given

    摘要分析了基於瞬時無功功率理論的諧波及無功電流檢測原理，在此基礎上提出一種自適應閉環控制的檢測系統，給出優化設計的基本原則。
  12. The shunt active power filter which uses the i p ? iqmethod and the hysteresis - based current control strategy has been simulated, and analyze the inductor and the cut - off frequency which affect the performance of shunt active power filters

    Iq諧波電流檢測和電流滯環跟蹤控制技術的並聯型有源電力濾波器進行了模擬研究，重點分析了影響有源電力濾波器補償效果的濾波電感和采樣電路截止頻率。
  13. 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。
  14. Continuous load a continuous load is a load where the maximum current is expected to continue for three hours or more ( as defined by the nec for design calculations )

    諧波環流是由並聯電源間不同的電壓波形或者非線性負荷運轉而產生的電流。
  15. It can improve the utilize of power by fed back the power generated by motor machine to power - net, has the benefit of improving power factor, reducing the harmonious feeding back to the power - net and can enhance the performance of converters for the constant voltage of dc - link

    該裝置能夠提高電能的利用率，把由電動機產生的再生能源回饋到交流電網，並且能提高裝置的功率因數，減少對電網的諧波污染。由於pwm整流，變頻器中間直流環節的電壓能保持穩定，提高了逆變器的調速性能。
  16. In the course of the design, critical technologies are applied, such as digital phase - locked loop, fast fourier transform algorithm, universal asynchronous receiver & transmitter, and so on. in the project, as a important component, the module of monitoring the buses " power quality takes a long time

    在設計過程中，使用的關鍵技術有：使用cpld模擬多路sspc多種狀態；在對匯流條電能質量的監測過程中採用頻率跟蹤技術? ?全數字鎖相環；應用fpga技術使用fft運算進行諧波分析；通用異步收發器等技術。
  17. Based on the state space equations of acim, a simulation model of the control system of acim is designed by using matlab / simulink. the results of experimentation and simulation indicate that the method of rotor flux oriented vector - control for ac the induction motor is of good dynamic and stability performance. at the end of paper, the conclusion and further research expectation are presented

    為提高系統輸入端的功率因數，減少注入電網的諧波，本文根據矢量控制的原理設計了基於功率因數控制的交流感應電機矢量控制的dsp試驗系統;並以感應電機狀態空間方程為基礎設計了在matlab / simulink環境下的感應電機模擬控制系統模擬模型。
  18. Circulating harmonic currents circulating harmonic currents are currents that flow because of differences in voltage waveforms between paralleled power sources, or induced by operation of non - linear loads

    諧波環流諧波環流是由並聯電源間不同的電壓波形或者非線性負荷運轉而產生的電流。
  19. In order to decrease the harmonics in mc ' s input and output current, the svm method and sinusoidal hysteretic band method are introduced into the mc hysteretic control respectively. secondly, based on the predictive current control fundamental principle, the particular 27 vectors predictive current control strategy and current trend predictive control strategy are proposed. the simulation indicates that all of the current methods can improve the mc ' s output current quality and speed its dynastic response

    提出了矩陣變換器的滯環電流控制策略，並針對滯環控制時輸入電流和輸出電流的諧波，分別提出了輸入電流空間矢量合成滯環控制方法和正弦環寬滯環控制方法；引入了矩陣變換器的預測電流控制新思路，在此基礎上，提出了矩陣變換器獨特的27矢量預測電流控制方法和趨勢型預測電流控制方法，模擬結果表明，各種電流控制方法提高了變換器的輸出電流品質，加快了變換器的動態響應性能。
  20. As a result, there are some disadvantages for its large size, heavy weight and lower efficiency. in this paper, phase - shifted zero - voltage - switching pwm converter is presented, which is help to ruduce the size and improve the efficiency of inverter. in the later stage, we adopted a pic microcomputer as the control chip, whose low price decreases the price of the inverter

    在逆變環節中，本文採用體積小、功能全、價格便宜而且簡單易學的單片機pic16c72作為控制晶元，對前級直流電壓進行spwm正弦脈寬調制，從而產生了高質量的正弦輸出電壓波形，減小了輸出電壓中的諧波含量。
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