零開關 的英文怎麼說
中文拼音 [língkāiguān]
零開關
英文
zero switch-
If bath king has been used for a long time, there will be feculence on the switch panel. when clear it, cut off power at first to make sure power off. and then use dishcloth with a little neutral detergent to rub it till the feculence is removed
用戶長期使用浴霸,開關面板沾有污漬,在清理這些污漬時,應先切斷電源(零線和相線) ,並在確認沒電的情況下,用沾有少量中性清潔劑的抹布擦試,待污漬擦去后,再用清潔干布擦乾。These character based on sichuan power network ' s practice operation experience, in allusion to the config of the carrier wave protection in bypass breaker operating, through the study of protection ' s typical config : one side lfp - 902a, one side csl - 101a, proceeded comprehensive act module test, noted plenty of first hand test data and wave picture, proceeded detailed theory analyses, plenitude demonstration atresic type carrier wave distance protection when twain side atresic type logic is not completely same, basically can fill power network ' s requirement to relay of reliability selectivity speedly and sensitively
本文結合四川電網的實際運行經驗,針對旁路開關代路運行時的保護配置情況,通過對旁路代路時保護典型配對組合:一側lfp - 902a ,一側csl - 101a的保護配置情況的深入研究,做了全面的動模試驗,記錄了大量的第一手試驗數據和波形,進行了詳細的原理分析,充分驗證了高頻閉鎖式距離零序保護在兩側閉鎖式邏輯不盡一致的情況下,基本能夠滿足電網對繼電保護的可靠性、選擇性、快速性以及靈敏性的要求。The design of rcd snubber and voltage feedback loop is introduced. finally, a 1kw prototype is researched and developed successfully to verify the operation principle of the combined converter
該變換器中的開關管實現了在零電壓下關斷,而且其中兩個開關管在零電流零電壓下開通。This product is used mainly in the leads of contacting net of high speed & quashing high speed railways, power cables, wire clips, mechanical fittings & accessories, electrical components & switch contacts
產品主要應用於高速或準高速鐵路接觸網導線、電力電纜、導電線夾、機械零配件、電器元件、及開關觸頭。1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發,提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲,在調制系數0 . 1 m 0 . 5情況下,控制移相角按正弦規律變化,使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號,經過整流、濾波、低頻逆變,從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載,移相全橋具有超前橋臂零電壓開通,滯后橋臂或者零電壓開通( _ 0 )或者零電流關斷( _ 0 )的軟開關特性,而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。Sren combines the advantages of daqo and siemens, providing railway electrification products ( ocs clamps & fittings, vcb, disconnector switch, power - supply switchgear etc ) with advanced technology and on - time considerate service
南京賽彤鐵路電氣化有限公司集大全和西門子的優勢為一體,在提供鐵路電氣化產品(接觸網零件,斷路器和隔離開關,供配電系統等)的同時也帶給用戶先進的技術,及時周到的服務。High - frequency link power converters are receiving increasing attention. when the input frequency of ac - ac converter is quite high, such as 20khz or above, in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage, the switching cycle becomes discrete pulse spectrums, however, the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria
當交-交變頻器的輸入頻率非常高,通常為20khz時,為了在零電壓條件下實現逆變器開關管的通斷,變換器的開關時刻必須選擇在高頻交流電壓脈沖為零時,這意味著變換器開關時刻在時間軸上成為不連續的點,而常規的硬開關pwm變換器是將開關時刻選擇在任意時刻。Secondly, the pressure sensor made by motorola co. ltd. in usa is chosen as the key part of the pneumatic - electric transducer. thirdly, the signal processing system of the pneumatic - electric is developed
第三,研製了氣電轉換器的信號處理電子系統,設計有調零、增益調整、開關轉換擴展量程等功能。Voltage segment network constituted by electron switch of bta and controlled by single chip microcomputer constitutes a new fast electronic regulator. for bta cross zero touch off, sine wave which is exported is integrity. a new way to generate stable ac current is found with feed back control system by single chip microcomputer. so a new high power ac current regulator is developed
採用單片機控制雙向可控硅作為電子開關所組成的電壓分節網路,組成新穎快速的電子調壓器;由於雙向可控硅過零觸發,所以其輸出是不失真的完整正弦波;再用單片機組成反饋控制系統,從而找到了交流穩流的新方法,研製出一個大功率交流穩流電源Abstract : voltage segment network constituted by electron switch of bta and controlled by single chip microcomputer constitutes a new fast electronic regulator. for bta cross zero touch off, sine wave which is exported is integrity. a new way to generate stable ac current is found with feed back control system by single chip microcomputer. so a new high power ac current regulator is developed
文摘:採用單片機控制雙向可控硅作為電子開關所組成的電壓分節網路,組成新穎快速的電子調壓器;由於雙向可控硅過零觸發,所以其輸出是不失真的完整正弦波;再用單片機組成反饋控制系統,從而找到了交流穩流的新方法,研製出一個大功率交流穩流電源Phase - shifted zero - voltage - switching pwm full bridge converter can realize zvs for the power switches with the use of the leakage inductance of the transformer and the intrinsic capacitors of the power switches, so it is used widely for medium and high power applications
移相控制零電壓開關pwm全橋變換器利用變壓器的漏感和開關管的結電容可以實現開關管的零電壓開關,在中大功率的場合應用廣泛。( 4 ) the experiment of asymmetrical half bridge converter design and the result of it base of the above analysis, the dc / dc converter is designed, it is proved that asymmetrical half bridge can realize zero voltage switching when it satisfies the condition of load current and deadtime by the experiment
( 4 )不對稱半橋的實驗電路設計及實驗結果基於前面的分析,設計了一個不對稱半橋dc dc變換器的實驗電路,進行了實驗研究,實驗結果證實了在滿足死區和負載電流兩個條件時,不對稱半橋可以實現零電壓開關。For the limitations of traditional pwm hard switching circuit, a kind of zero of pair soft switching technology is introduced and the switching loss can be cut down by it and the reliability of inverter in case of high frequency can be improved also
由於傳統pwm硬開關電路的局限性,本文採用一種雙零諧振型軟開關技術降低開關損耗以及在高頻情況下提高整機的可靠性。Conventional hard switching technology has several flaws below : on and off loss, inductive off, capacitive on and diode recover problems. comparing with it, the loss of on and off decreases markedly, as the switches are on and off in zero voltage or zero current cases. and also the size of converter becomes smaller because of the higher of switching frequency
傳統硬開關技術由於存在開通關斷損耗大、感性關斷、容性開通、二極體反向恢復等問題,與之相比,軟開關技術在零電壓或零電流條件下導通,開關損耗明顯降低,加上開關頻率的提高使得變換器的體積得以減小,這也是軟開關技術受到青睞的原因。The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter
該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起,有效地降低了電路的開關損耗和開關噪聲,為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時,能拓寬零電壓開關的范圍,使變換器在較寬的負載變化范圍內都能實現軟開關。By analyzing the basic principle of voltage space vector pwm, a method is proposed to choose the zero vectors dynamically according to the power factor angle of the load and the concept of the lag angle of non - switching sectors
在分析了空間矢量pwm基本原理的基礎上,提出了一種根據負荷功率因數角動態分配零矢量的方法,並引入了不開關扇區滯后角的概念。Zero - voltage turn - on and zero - voltage turn - off in lagging arm and leading arm of soft - switching topology, working waveform of power transformer and process of rectifier and transition are presented in detail. the influence of resonant inductance of the power transformer, resonant capacitor and variation of load to the process of soft - switching are given
主要對軟開關滯后橋臂和超前橋臂的零電壓開通、關斷過程,功率變壓器的工作波形及整流換流過程進行了詳細的模擬分析,並重點討論了逆變器的諧振電感、諧振電容以及負載變化對軟開關過程的影響。This valve uses the packing structure with the ability of self - seal, needs no constant adjustment, features very light open and close and a reliable seal an assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a true null leak, settling the problem for the packing place of universal valves to be easiest leak outward
本閥採用帶自密封能力的填料結構,無需經常調節,開、關極為輕便,且密封性可靠,填料函處設有輔助密封油脂注入結構,密封性能絕對可靠,真正達到零泄漏;解決了通用閥門填料處最容易外漏的蔽病。Above all, the defects cannot obscure the virtues, this novel zvs chopper is a preferable chopper structure, which can be applied in maglev chopper broadly
然而,瑕不掩瑜,新型的零電壓軟開關仍然是一種較好的斬波器拓撲結構,在磁懸浮列車斬波器的應用上有著廣泛的前景。With zero setting on / off, feeder and slotter can be quick. set to zero, easy operation
配合歸零開關操作,可迅速使送紙部及開槽部自動歸零,方便調整。分享友人