磁變管 的英文怎麼說
中文拼音 [cíbiànguǎn]
磁變管
英文
maggnifiying pwer mognistor-
Hunan aero - magnetoelectricity co., ltd ( short for am following ) is a state - owned enterprise with production value of a hundred million yuan per year. with the expanding scale, converting operation system and more extensive competition, the corporation has more commands in information, and tries to improve the enterprise manage efficiency and lever even the core competition by the means of all - round carrying out the erp system, introducing advanced modernized management, optimizing and reforming the enterprise organizing structure and operation circuit
湖南航天磁電有限責任公司是一個年產值近億元的國有企業,隨著公司規模的不斷擴大,運行機制的轉變,市場競爭的加劇,公司對信息化的需求越來越高,希望通過實施erp系統,引入先進的現代化管理,對企業組織結構、業務流程的優化和組合,全面提高管理效率、管理水平,並最終提高企業核心競爭力。The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation
二、在高頻變壓器原邊,當開關管接收控制信號脈沖列(經調制的spwm波列)導通時,在低頻調制信號的正半周或負半周內,施加在變壓器繞組上的是同一方向的電壓,變壓器磁芯中的磁通可能將級進地逐漸增加,導致磁芯飽和,造成磁偏或單向磁化,導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。During ion source operating, alternating axial magnetic field and azimuthal electric field in discharge tube ionize hydrogen gas purified by hot palladium pipe, and form plasma, hi fifties year, research reports studied on rf ion source are numerous however most of them are concerned about application, and research reports relevant to discharge theory or experiment model are unfrequent
離子源工作時,放電空間交變的軸向磁場和渦漩電場激發放電管中經鈀管純化后通入的氫氣電離,形成等離子體。 50多年來,關于高頻離子源的研究報告很多,但是,這些研究主要都集中在應用研究方面,有關高頻無極環形放電離子源的理論與實驗模型研究不是很多。The methods that can efficiently suppress the disturbance on gate of switching component of the inverter - bridge are synthesized. a dual - inductor output filter is employed to improve electromagnetic interference ( emi ), due to turn - on or turn - off of the power switches of the inverter, which may be lead loads into trouble
本文詳細論述了1kva25hz新型鐵路信號電源和2kva高頻在線式ups的設計和調試工作,總結了幾種能夠有效抑制逆變橋功率開關管門極干擾的措施,並且運用一種雙電感結構的輸出濾波器來改善由逆變器功率管在開關過程中產生的、影響負載設備正常工作的電磁干擾。The detail study on the interaction between the electron beam and standing wave of complex cavity gyrotron with gradual transition and gyroklystron has been done in this dissertation, supported by the pre - study important items " the study on 8mm third harmonic gyrotron with a permanent magnet system " and " the study on 8mm high power gyroklystron ". the main works of this dissertation are listed as following : 1. the study on the rf distribution of the complex cavity with gradual transition is presented, in which the multi - modes coupling are taken into account
本論文就是結合該課題組的「九?五」重點項目「 8mm三次諧波永磁包裝迴旋管技術的研究」及「十?五」重點項目「 8mm高功率迴旋速調管技術的研究」 ,對以諧振腔為互作用高頻系統的迴旋脈塞器件中兩種典型的器件? ?迴旋振蕩管及迴旋速調管中電子注與駐波場的互作用進行了深入細致的探討和研究,其中迴旋振蕩管採用的是漸變復合腔。With the development of the converter drive technology, the requirement for the variable frequency drive are becoming more and more strict especially for the modern converter drive employing fast switching semiconductor igbt , though it has high pulse frequency and refreshing time of only nanoseconds, it generates emf that has adverse effect on the environment
隨著頻率控制傳動技術的發展,對頻率變速傳動系統的要求越來越高,尤其是對採用快速切換的igbt半導體現代變頻技術,盡管脈沖頻率高或更斷時間僅毫微秒內,但它們會對周圍環境產生電磁場。Ppfc working principle, circular current and effects of clamping capacitor are studied in this paper in detail. because of the clamping capacitor, ppfc have some good features compared with ppc : reducing the fluctuate of the input current ; restraining the voltage spike of the power mosfet ; avoiding the bias - magnetic of the transformer
由於箝位電容的加入,相對于推挽電路而言,該拓撲具備了一些獨特的優點:減小了輸入電流的脈動:削弱了開關管的關斷電壓尖峰;有效抑制了變壓器的偏磁。The experiment set we are researching on is composed of four sections, namely remote control through coded radio, tube close driven by a electromotor, tube disjunction pushed by a electromagnet and power supplied by a single - phase dry - type transformer
本實驗裝置主要由四部分構成,即密碼無線遙控、電動機拖動熔管合閘、電磁鐵推斥熔管分斷、單相干式變壓器供電。Nirs measures only small essels and thus may be less sensitie to systemic circulatory changes than functional magnetic resonance imaging
近紅外線只檢測小血管,因此可能對于系統循環改變靈敏度不如功能磁共振成像。By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion
由此得出結論,在非線性磁場計算中:採用迭代法的情況下,在各迭代循環之間進行磁導率修正時,一個欠鬆弛迭代過程是必需的;對永磁體中的等效電流修正時可以不作欠鬆弛迭代;在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值,會使得插值求出的磁導率在該磁飽和值附近有一突變,這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中,由於微波管磁路比較復雜,作者認為磁體的工作點並不能很好地反映磁體的工作狀態,而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況;要表示磁系統設計好壞的程度,則用磁能利用的效率為標準更好。In the synchronous " model, based on the idea of polygonal flux linkage locus, by means of constructing the switch state period table of three phrase voltage inverter is required. in the brushless model, the igbt ( isolated gate bipolar transistor ) switch state period table is gained by gal ( generic array logic ) which analyzes the signal of position feed - back
在同步方式下,基於多邊形磁鏈軌跡法的思想,用作圖法求得三相電壓型逆變器的pwm波形序列;在無刷直流方式下,用gal對位置反饋信號進行邏輯綜合,得到開關管的導通規律。In this paper, the working principle of the interleaving two - transistor forward converter is analyzed in detail, and the waveforms of the switch drain - to - source voltage and transformer magnetizing current are researched in different duty cycle conditions. the simulation model is constructed and the simulation results verify the analysis
本文分析了交錯並聯雙管正激變換器的工作原理,研究了在不同占空比條件下開關管的漏源電壓和變壓器勵磁電流波形,建立了模擬模型,模擬結果證明理論分析的正確性。Based on examples, the problems in reinstallation process of oil pump, tap - changer and bushing after transformer maintenance overhaul are analyzed. the measures to prevent the problems are presented
摘要以實例分析了變壓器大修后潛油泵、無勵磁分接開關、套管回裝過程中存在的問題,提出了防止類似問題發生的措施。Non - destructive testing of steel tubes - part 4 : automatic full peripheral magnetic transducer flux leakage testing of seamless ferromagnetic steel tubes for the detection of transverse imperfections
鋼管的無損檢驗.第4部分:檢測橫向缺陷用無縫鐵磁鋼管的自動全周邊電磁變換器漏磁檢驗In this paper, the bias - magnetic of ppfc and the parameters effect on the bias - magnetic are all studied. firstly, the bias - magnetic principle of ambipolar converter and some basic relations are analysed under two different conditions ( different von and different ton )
首先在導致偏磁的兩種情況下(管壓降不同和導通時間不同)下,從理論上分析了雙極性變換器變壓器偏磁原理及基本關系。Relativistic back wave oscillator ( rbwo ) with a coaxial structure has a big power capacity of system. with large radius electron beam to decrease the space charge effects without usage of high current, hence the rbwo can work well at a lower axial guide magnetic field
同軸返波管具有很大的功率容量,可以採用大半徑電子注,在工作電流不變的情況下空間電荷效應大幅度降低,因而可工作在低磁場狀態。A linear theory of rbwo with inner - slot coaxial structure is analyzed detailedly, and the equation of dispersive relation is deduced and computered numerically. 4. particle simulation is used in rbwo respective with coaxial and partial structure. in the simulation, the output parameters of rbwo such as phasespace, contour, vector, voltage, current, output power, interaction efficiency and microwave radiation
4 .對同軸和偏心返波管分別進行了粒子模擬,通過改變電壓、電流、電子注位置、磁場等參數來觀察返波管加了內開槽前後相位空間、等位線、矢量、電壓、電流、輸出功率、工作頻率的變化。With the best modulation strategy which was found on condition that it must have largest energy transfer ratio, smallest current ripple of the inductor, and realizing zvs of each switches, the converter overcomes the drawbacks presented by the conventional zvs fb converter, such as high voltage stress of each switches, large current ripple of the inductor, and severe parasitic ringing on the rectifier diodes, so it can get higher efficiency, faster respond speed, and wider application area. the operation principle of the proposed converter is analyzed and verified by a 3kw, 50khz experimental prototype. experiments and research results show that the scheme of the tl topology derivation is reasonable, adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive
研究結果表明,本文提出的三電平拓撲變換方案合理,針對各種三電平拓撲尋找到的控制策略可以解決變換器存在的某些問題或使變換器表現出更突出的優勢:例如針對單管直流變換器三電平拓撲的控制策略可以減小電感的設計值,針對推挽直流變換器三電平拓撲的控制策略可以實現開關管的軟開關、解決變壓器偏磁問題等,針對全橋直流變換器三電平拓撲的控制策略可以減小電感的設計值、實現開關管的軟開關等。Since the analysis of the inverter and its control system is very complex, the frequency analysis, time domain analysis and control system is made in capacitance operated conditions limited to pressure of time and paper length. the research content can be summed up as follows : ( 1 ) a new equivalent circuit of dbd circuit ( dielectric barrier discharge ) that consider the consume of transformer, the on - off switching loses and so on is presented based on the ozonier powered by sine current source. as compared with the former equivalent, the new equivalent circuit can be depicted the actual ozone circuit accurately
本文主要針對容性狀態下的臭氧發生器電源進行相關研究,研究內容包括以下幾部分: ( 1 )在正弦電流源供電的dbd型發生器的基波等效電路基礎上,提出了一種考慮電路雜散損耗(變壓器勵磁損耗、開關管開關和導通損耗以及其他元件的熱損耗)的改進型基波等效電路,並採用該等效電路得出了適用的臭氧發生器電源設計方法,實驗驗證了該基波等效電路具有工程設計精度高的優點。Detail specification for frequency agility pulsed magnetron of type ckm - 709 709a
Ckm - 709 709a型捷變頻脈沖磁控管詳細規范分享友人