高壓變流機 的英文怎麼說
中文拼音 [gāoyābiànliújī]
高壓變流機
英文
high voltage converter-
The characteristics of high pressure gyratory sprayed pumping discusses is presented, which is applicable in wide range of scope and ground layers, convenient for construction, long durability, wide source of materials. mechanism for subgrade strengthening : complex foundation of cement solid and earth between piles was formed by pulsant load of flowing pressure and spraying flow, water wallop, cavitation phenomenon, water wedge effect, extrusion force and air flow agitation etc so as to enhance foundation bearing force and reduce settlement and deformation
高壓旋噴注漿技術具有適用范圍、適用地層較廣，施工方便，耐久性好，材料廣闊等特點；其加固地基機理主要是通過流動壓、噴射流的脈動負荷、水塊的沖擊力、空穴現象、水楔效應、擠壓力、氣流攪動等效應形成水泥固結體與樁間土的復合地基，從而提高地基承載力，減少沉降變形。By using harika algorithm, the characteristic of a high - pressure compressor is calculated at different installation angle of the inlet guide vane and the stator vanes ; the characteristics of a high - pressure turbine and a low - pressure turbine are simulated at different installation angles of the guide vane based on ainley method
本文用harika演算法計算了導流葉片和靜子葉片安裝角度可調的變幾何高壓壓氣機特性；用ainley法計算了渦輪導向器面積可調的高壓渦輪和低壓渦輪的特性。The system is different from traditional silicon controlled dephasing method, such speedy modules as whole controlled electric and electronic equipment igbt and high frequency pwm controlling methods are employed, and the voltage of exchanging power supply of motor of beam pumping units can be controlled automatically, so there is no problem of power factor being decreased brought by silicon controlled phase single controlled, power factor in power net of beam pumping units " motor is enhanced really
由於雙管齊下，電機電網側的功率因數得到了大大提高。與傳統的可控硅移相控制方式不同，本系統採用全控型電力電子器件igbt等快速模塊及高頻pwm控制方式，對抽油機電機的交流供電電壓進行自動控制，不存在可控硅相控角所帶來的功率因數變差的問題，真正提高了抽油機電網側的功率因數。Product this company, brush of british, high - handed limit that manufacturing technology produce to flow fuse box, products suitable for family exchenge 50hz, specified voltage 3kv kv, 6kv 7. 2kv, 12kv 15kv system, can cooperate and is used with other protection electric apparatuses such as the on - load switch, vacuum contactor, as high - handed motor, electric power voltage transformer and electric power overload or holding up of equipment, etc. protect the component
本產品是英國brush公司高壓限流熔斷器製造技術生產的，產品適用於戶內交流50hz ，額定電壓3kv 3 . 6 kv ， 6kv 7 . 2kv ， 12kv ， 15kv系統，並可與其它保護電器如負荷開關，真空接觸器配合使用，作為高壓電動機，電力變壓器及電力設備的過載或短路等保護元件。Product this company, brush of british, high - handed limit that manufacturing technology produce to flow fuse box, products suitable for family exchenge 50hz, specified voltage 3kv kv, 6kv, 12kv 15kv system, can cooperate and is used with other protection electric apparatuses such as the on - load switch, vacuum contactor, as high - handed motor, electric power voltage transformer and electric power overload or holding up of equipment, etc. protect the component
本產品是英國brush公司高壓限流熔斷器製造技術生產的，產品適用於戶內交流50hz ，額定電壓3kv 3 . 6 kv ， 6kv 7 . 2kv ， 12kv ， 15kv系統，並可與其它保護電器如負荷開關，真空接觸器配合使用，作為高壓電動機，電力變壓器及電力設備的過載或短路等保護元件。In this background, this paper studies a new type of squirrel - cage induction generator system, dual stator - winding induction generator system which can be used in the wind generating system. firstly, the simulation model of dual stator - winding induction generator system is established by matlab
本文正是在此背景下對一種新型的、適用於變速恆頻風力發電系統的鼠籠型感應電機發電系統? ?定子雙繞組感應電機高壓直流發電系統進行了研究。The work principle of dual stator - winding induction generator system, and the researches on practical application of dual stator - winding generator system are analyzed in detail. aimed at the work condition of wide rotor speed and optimization of static reactive power generator ’ s volume, the performance of dynamic state and static state and optimal control of high - voltage dc generator system based on dual stator - winding induction generator, are studied in this paper. these researches not only achieve the work characteristic of dual stator - winding induction generator system, but also set up the foundation of optimal design of dual stator - winding induction generator and engineering realization of dual stator - winding induction generator system used in wind generating
本文闡述了定子雙繞組發電機的基本工作原理，基於matlab軟體建立了定子雙繞組感應電機發電系統的模型，並在此基礎上詳細分析了定子雙繞組感應電機發電系統的工作機理、影響兩套定子繞組容量比的因素等，從而摸清了該系統的特性，尤其是定子雙繞組感應電機高壓直流發電系統在變轉速、變負載下工作的特性，從而為該系統的工程實現奠定了重要的理論基礎。The sieries product is suitable for the system with current 50hz - 60hz and the rated voltage of 3. 6kv 40. 5kv. it can be matched with other protective electrical equipment vacuum connection, loading switch etc. it can also be used as the overload or short circuit protection parts for high voltage motor, transformer, voltage mutual inductance attenuator and other power equipment
本系列產品適用於交流50hz - 60hz ，額定電壓3 . 6kv 40 . 5kv系統，可與其它保護電器如真空接觸器，負荷開關等配合使用，作為高壓電動機電力變壓器電壓互感器及其它電力設備的過載或短路保護等元件。Abstract : this paper pointed out a few problems of series, harmonic and efficiency etc., to be needed considering, it introduced constructed by all - controlling power electronics device igbt by means of multi - pwm control technology, and this kind of convertor can be the used for direct frequency conversion governorof midolle / high - voltagea. c mo tors
摘要：提出用於高壓電動機變頻調速電源需考慮的串聯、諧波和效率等幾個問題;介紹由全控型電力電子器件igbt按多重化pwm控制技術構成、目前已商品化的高壓變頻器，可用於中、高壓交流電動機的直接變頻調速。A novel cycloconverter - rype three - phase hf link inverter topology for soft - switching based on phase - shifted full - bridge mode is proposed, whose main advantages are as follows : under the conditions of d < i < and overlap - d, the switches of the leading leg are turned on at zvs and the switches of the lagging leg are turned off at zcs and all switches of the cycloconverter circuit are commutated in the overlapping mode in the interval of zero voltage, which makes the circuit realize soft switching to the utmost extent and reliably solve the problem of peak voltage caused by the storing energy of leakage inductance of hf transformer
論文提出一種新型移相全橋軟開關周波變流型三相高頻鏈逆變器，電路的主要優點是：前級移相全橋的移相角控制在_ d _ i和_ （ overlap ） - _ d條件下，超前橋臂零電壓開通，滯后橋臂零電流關斷，並使周波變流器所有開關在零電壓期間重疊換相，使整機開關最大程度地實現了軟開關，並可靠解決了高頻變壓器漏感儲能引起的電壓尖峰問題。The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation
結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。According to the practical geological model of slope, by means of the finite element analysis, from the constitutive equations of the elastoplasticity and the viscoelasticity - viscoplasticity, the process and mechanism for progressive failure of the locked segment of rockmass are quantitatively revealed and simulated during the rupture, deformation, destruction, and failure of highsteep slope rockmass, and the dynamics driving the motion of rocky landslide with violent starting velocity by high pressure water flow is dealed with
根據邊坡實際地質模型，基於彈塑性與粘彈-粘塑性理論的本構方程，通過有限元模擬分析，定量地揭示和模擬再現了高邊坡巖體破裂、變形、破壞及失穩前後鎖固段巖體漸進性破壞的機制和過程，探討了高壓水流作用下滑坡啟程劇動的破壞機理。An engineer case is introduced, which is about " the reconstruction of high voltage fan ' s speed - adjusting by frequency conversion and the design of plc ( programmable logic controller ) control system in shui cheng iron and steel company ". in this project, an advanced controlling technology, based on the method in this paper, is used to realize the closed loop control of discharge header pressure of two coke ovens
介紹「水鋼煤焦化公司鼓風機高壓變頻調速及系統plc控制改造」的工程概況，對煤氣鼓風機採用先進的變頻調速技術和計算機控制技術進行改造，實現對兩座焦爐集氣管壓力自動調節的閉環控制功能，既滿足了煤氣量的自動調節的要求，又避免了煤氣鼓風機出口閥門的節流調節，節能效果相當可觀。Under the test conditions of ud = 2800v and 350hz switching frequency, the current in three phase inverting test reached to loooar. m. s, which can fully meet the requirements of 350km / h emu with 2600v link voltage and 950ar
在中間直流環節電壓u _ d = 2800v ，開關頻率為350hz的條件下，逆變的試驗電流達到了1000ar . m . s ，完全能夠滿足350km h高速動車組對變流器中間電壓2600v 、輸出電流為950ar . m . s的要求，表明了地面試驗機組的研究獲得了成功。With the technique, the new production provide advanced performance, smaller size, and reduced cost in this paper, the present status of motor control techniques, the present status of micro - electronics techniques, and the present status of integrated circuit techniques are reviewed. present some samples of ac motor driver ( dsp motor controllers, microprocessor controllers, motor control 1c controllers ). compare the performances of these ac motor drivers with each other
本文查閱了大量的有關高壓集成電路技術、電子系統裝聯技術、電力電子器件、微電子技術、集成電路技術和交流異步電機變頻調速技術等方面的文獻，研製了三種具有代表性的交流異步電機變頻調速，從技術上論證了小型交流電機變頻調速系統集成化的可行性，對集成化過程中可能遇到幾個主要問題提出了解決方法。The principle of ac - dc - ac locomotive is that transformer transforms the high single - phase ac voltage from contact system to lower ac voltage first, then rectifier transforms this ac voltage to steady dc voltage, finally converter transforms this dc voltage to three - phase vfvv ac voltage as the voltage source for asynchronous machine
交?直?交型電力機車系統的原理是：先將從接觸網獲得的單相交流高電壓經變壓器降壓后，再經整流器變換為平穩的直流電壓，直流電壓經逆變器變換為三相交流電壓，供給機車輪對上的牽引電機。A 3kw prototype converter is built to verify the effectiveness of the improved converter and the best scheme for the blocking capacitor, and the experimental results are also included in this paper
本文將改進型零電壓全橋變換器應用於高壓直流二次電源dc dc變換器中，研製出一臺3kw工程樣機，並給出實驗結果。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。Because the harmonics in tangyin substation are primarily from electric traction loads, this paper gives the structures of several main locomotive models and general harmonics they produce. the harmonics produced by electric locomotive have a characteristic that their range and phase are both dispersive. this paper also analyzes the impedance - matching balance transformer ' s structure and harmonics injected into the power system at its primary side, and sums up the characteristics of the harmonics from electric traction loads in the tangyin traction substation
鑒于湯陰變電站的諧波主要來自電力牽引負荷，本文列舉了電力機車幾種主要車型的結構以及它們產生諧波的概況，得出了電力機車的各次諧波電流幅值和相角具有較大分散性的特點。針對湯陰牽引變電站的牽引變壓器，分析了阻抗匹配平衡變壓器的結構及其高壓側注入電網的諧波，推導了有關計算公式。通過理論分析並結合湯牽線的實測諧波數據，歸納了電力牽引負荷注入湯陰變電站的諧波的特點。Abstract : the multifunctional inverter power sourcethe handy inverter welding, plating & charging manchine, developed with advanced inverter and micro - electronics control techniques, adopts “ half - bridge power expansion supply midpoint voltage autocontrol setting ”, and technically and effectively having solved inverter subvision of inverter power expansion circuit for leaning magnetism, reliability of high - power inverter setting, achives combination of constantcurrent and constantvoltage export, and realizes low - voltage dc and high - voltage ac double power supply
文摘:運用先進的高頻逆變技術和微電子控制技術設計研製的逆變式多功能電源便攜式逆變焊鍍充電多用機，採用「半橋式功放級供電中點電壓自動控制調節裝置」 ，在技術上解決了逆變功放電路因偏磁而造成的逆變顛覆，有效地解決了大功率逆變器的可靠性問題；進行多種外特性的綜合設定，實現了恆流與恆壓輸出的合一；與傳統焊機相比，實現了開環和閉環狀態下都互不影響的低壓直流電瓶和高壓交流雙供電分享友人