正弦式電流 的英文怎麼說

中文拼音 [zhēngxiánshìdiànliú]
正弦式電流 英文
sinusoidal current
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 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...
  • 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...
  • 電流 : current; galvanic current; electric current; electricity; current flow電流保護裝置 current protec...
  1. 4 the average power of a non sinusoidal periodic current is equal to the sum of powers of all its fourier series components

    非正弦周期電流電路的平均功率等於其傅里葉級數展開式所有分量的功率之和。
  2. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  3. Three - phase dry - type distribution transformers 50 hz, from 100 to 2500 kva with highest voltage for equipment not exceeding 36 kv - determination of the power rating of a transformer loaded with non - sinusoidal current

    小於36kv設備的最高電壓值為50hz 100 - 2500kva三相干式配電變壓器.負載非正弦電流的變壓器額定功率的測定
  4. Three phase oil - immersed distribution transformers, 50 hz, from 50 to 2500 kva with highest voltage for equipment not exceeding 36 kv - determination of the power rating of a transformer loaded with non - sinusoidal currents

    小於36kv設備的帶有最高電壓值50hz 50 - 2500kva三相油浸式配電變壓器.載有非正弦電流的變壓器額定功率測定
  5. If a sinusoidal current is sent through a moving coil galvanometer, the meter reads zero.

    如果將一正弦電流通入動圈式電流計，那麼這電流計的讀數為零。
  6. The main circuit is consisted of 18 thyristors circuit and protection circuit. with the help of control subsystem, it can get the output of low frequency voltage ( current ) with the shape of sine wave ; the core of the control subsystem is the cpu of 87c196kc, and the synchronization circuit, the pulse - widen circuit, and the power - enlarged circuit form the accessorial subsystem of the control system. it possesses all the functions of digital triggering, digital tuning, analog / digital conversion ; the input transfer can isolate the input and output ; and the circumfluence reactor can reduce the circumfluence

    主迴路採用由18個晶閘管組成的三相零式電路，並輔以晶閘管的保護電路，通過控制可以得到低頻正弦波的電壓（電流）輸出；控制迴路主要以87c196kccpu為核心，其外圍電路包括同步電路，脈沖拓寬電路，功率放大驅動電路等，完成了數字觸發、數字調節、模數轉換等功能；進線電源變壓器具有變壓和隔離作用；環流電抗器則實現了有效抑制主迴路瞬時脈動環流的功能。
  7. The inverted pwm changing electric current the technique is applied in the prototype model. the prototype model was tested and operated on spot, power factor could reach beyond 0. 95, the effect of following modulating voltage was better, the curve of factor of modulated voltage of exchanging systems changed following load rate was linear, the output of wave form was a flat and steady sinusoidal wave

    樣機採用了逆變式pwm變流技術，對其進行了現場測試與試運行，測試結果是電網側的功率因數可達0 . 95以上，跟蹤調壓效果良好，變流系統輸出調壓系數（ k ）隨負載率（ p ）的變化曲線基本滿足直線關系，輸出波形呈平滑穩定的正弦波。
  8. Meanwhile it can filter the waveform and gather the envelope and calculation the current peak and max steepness of lightning by length of erased magnetic record. thirdly we need analyze the difference of length of erased magnetic record between kinds magnetic tape or pre - recorded sine wave on magnetic tape, and finding the min and max lightning current that can be recorded by magnetic tape. then we confirm the type of the magnetic tapes and the way of installing which fit to the line towers

    同時對該波形進行濾波消噪，提取包絡線計算磁帶消磁長度和雷電流峰值及最大陡度第三部分根據mtlcd得出的數據分析不同雷電流通道下不同磁帶、不同預錄正弦波消磁長度的差異及磁帶可以記錄的最小雷電流和最大雷電流，找到可以在輸電鐵塔角鋼上安裝使用的磁帶及其放置方式。
  9. Based on the pwm technology ( the style of traced sin current ) with fixed switch frequency, a sin subdivided driving system for three - phase hybrid stepping motor has been built

    基於固定開關頻率型正弦電流跟蹤pwm技術，採用軟硬體結合的方式完成三相混合式步進電動機正弦波細分驅動系統的研製。
  10. Combining the methods of in - phase variable - frequency adjusting speed with brushless dc control, this system uses repmsm ( rare earth permanent magnet synchronous motor ) as executing motor. this system makes full use of characteristic of high static precision and dynamic fast response

    以正弦波永磁同步電動機為執行電機，採用他控式磁通軌跡法變頻調速和無刷直流方式調速方法相結合的控制策略，充分發揮了同步電機的穩態高精度和直流電機的動態快速性的特點。
  11. A permanent magnet synchronous motor is selected so that the system could work excellently. multiform measures are taken to weakening the torque ripple, such as adopting stator - flume, choosing right ratio of magnet - width and slot - width, and programming properly. a permanent magnet synchronous motor cad software is worked out for predigesting the design of the motor

    力矩脈動是衡量交流伺服系統性能優劣的重要指標，為達到理想的控制效果，系統採用正弦波驅動的稀土永磁同步電動機作為執行元件，電機本體的設計綜合採用定子斜槽、將轉子永磁體連續移位、合理選擇永磁體寬度和齒槽寬度比等方法，基本消除了齒槽轉矩；對于紋波轉矩，系統採用軟體的方式加以削弱和補償。
  12. As a result of employing multilevel phase - shifted method with zig zag connection in transformer secondary, in the primary the current harmonics their orders are lower than 6m 1 are eliminated ( m is the number of power cell each phase ). in the inverter side because of using pulse shifting pwm control, the equivalent switch frequency of output is m times as high as one h - bridge, so the output voltage waveform of the inverter is near sine with less harmonics

    對于整流電路，由於採用變壓器移相多重化整流，在理論上可以實現曲折變壓器一次繞組中低於6m 1次諧波電流相互抵消（ m為串聯單元個數） ；對于逆變電路，由於採用移相pwm控制方式，等效開關頻率提高m倍，因此輸出電壓接近正弦波，諧波含量較小。
  13. This paper put forward the realization method of a kind of multi - function general use inverter system which added other functions based on the independent sine wave inverter, it not only can be used as independent inverter power supply but can be used as an in - support mode ups which realize synchronous with the phase of power grid voltage and realize to switch with power grid mutually, it also can realize three phase ac output by the combination of three synchronous inverters, experiment proved it in this way has a stronger ability of resisting three phase unbalance load

    本文提出了一種基於獨立正弦波逆變器的功能之上復合其他功能而成的多功能通用逆變電源系統的實現方法，此系統不僅可以作為獨立逆變電源使用，還可以與電網電壓的相位同步，作為后備式正弦波ups使用，在逆變電源和電網的相互切換時能做到對負載無影響，同時還可以由三臺逆變器進行組合自同步實現三相對稱交流輸出，實驗證明這種方式具有較強的抗三相不平衡負載的能力。
  14. The satss is an antenna pointing servo system with ultra - low speed and high accuracy, driven by a rare earth permanent magnet ( repm ) brushless dc torque motor. to reduce torque ripple, the repm brushless dc torque motor has a slotless armature, and uses sinusoidal wave driven technology

    衛星天線跟蹤伺服系統為超低速高精度天線指向控制系統，該系統使用稀土永磁式無刷直流力矩電機作為天線的驅動機構，為降低轉矩脈動，電機採用無槽電樞結構設計，並使用正弦波驅動方式。
  15. The circuit structure which can transfer one unregulated sinusoidal voltage with high thd into another regulated constant frequency sinusoidal voltage with low thd is constituted of input cycloconverter, high frequency storage transformer, output cycloconverter, input and output filter

    該電路結構由輸入周波變換器、高頻儲能式變壓器、輸出周波變換器以及輸入、輸出濾波器構成能夠將一種不穩定劣質的正弦交流電變換成另一種同頻率穩定的優質正弦交流電壓。
  16. Then novel circuit structure and circuit topologies family of current source ac / ac converters with high frequency ac link, based on flyback converter, are proposed. the circuit structure which can transfer one unregulated sinusoidal voltage with high thd into another regulated constant frequency sinusoidal voltage with low thd, is constituted of input cycloconverter, high frequency storage transformer, output cycloconverter, input and output filter. the circuit topologies family include single four - quadrant power switch mode, push - pull mode, half - bridge mode, and full - bridge mode circuits

    本文提出了基於反激flyback變換器的電流源高頻交流環節ac ac變換器電路結構及其拓撲族，該電路結構由輸入周波變換器、高頻儲能式變壓器、輸出周波變換器以及輸入、輸出濾波器構成，能夠將一種不穩定劣質的正弦交流電變換成另一種同頻率穩定的優質正弦交流電壓；該電路拓撲族包括單四象限功率開關式、推挽式、半橋式、全橋式等四種電路。
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