starting voltage 中文意思是什麼
starting voltage
解釋
起動電壓-
The starting voltage of electroscopes, correct operation of electroscopes, roles of the starting voltage of electroscopes in production, and the difference between the all - loop self - inspection and the non - all - loop self - inspection are illuminated, as well as the relationship between the electroscope and the high voltage generator
摘要闡述了驗電器起動電壓的原理、驗電器的正確操作、驗電器起動電壓在生產中的作用、全迴路自檢與非全迴路自檢的區別、驗電器與高壓發生器之間的關系。 -
Wire clipping - ball and high voltage, slow wire sending function developed the arc - starting liability
焊絲削球和高電壓、緩送絲功能，提高了引弧的可靠性。 -
In this dissertation, we firstly prove that any dirichlet problem is indeed equal to a voltages problem of networks. we give five solutions to dirichlet problem in two dimensions ; among these five solutions, we prove that the iteration solution and the solution of relaxations are exponential convergence, then we estimate their respective convergence rates ; secondly, we discuss random walks on general networks, prove that there is an one to one correspondence between networks and reversible ergodic markov chains ; thirdly, we give probabilistic interpretation of voltages for general networks : when a unit voltage is applied between a and b, making va = 1 and vb = 0, the voltage vx at any point x represents the probability that a walker starting from x will return to a before reaching b ; furthermore, we study the relationship between effective resistance and escape probability : starting at a, the probability that the walk reaches b before returning to a is the ratio of the effective conductance and the total conductance
本文證明了任何邊值的dirichlet問題都可轉化為求解電路電壓的問題：給出了計算平面格點上dirichlet問題的5種方法：證明了迭代法和松馳法都是指數收斂的，並分別給出收斂速度的估計；討論了一般電路上的隨機徘徊，驗證了電路與可逆的遍歷markov鏈是一一對應的；給出了電路電壓的概率解釋：當把1伏電壓加於a ， b兩端，使得v _ a = 1 ， v _ b = 0時，則x點的電壓v _ x表示對應的markov鏈中，從x出發，到達b之前到達a的概率；進一步地，給出了逃離概率與有效電阻之間的關系：從a出發，在到達b之前到達a的概率為有效傳導率與通過a的總傳導率之比。 -
In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high
針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析，變頻器輸出的電壓波形諧波大，沖擊大，電壓上升率高達6600v / s ，是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低，額定頻率在8 - 20hz ;調速范圍寬，最低運行頻率低到0 . 5hz ，起動次數相當頻繁，每小時高達600 - 800次，沖擊負荷大，過載能力要求較高。 -
The device can realize the following functions : automatic stabilizing voltage, contravariant magnet - suppressing, the smallest excitation limitation, residual voltage starting excitation and reactive regulation
實現自動穩壓、逆變滅磁、最小勵磁限制、殘壓起勵、無功調差等功能。 -
Transitional feature of the arc and metal droplet in the welding process with steam shielded arc is investigated by means of analysing the waveforms of welding voltage and current under different welding regimes and it is found that there are two types of arc process behavor ? " arc starting - arc blowing out - short - circuiting " and " arc - starting - short - circuiting ". under the condition of constant diameter of welding wire and its feeding speed, the arc process behavor can be changed by adjusting the inductance of welding circuit as well as the voltage of power supply. if arc process behaves as alternative process of " arc starting - arc blowing out - short - circuiting " with minimum time duration of arc blowing out and maximum frequency of short - circuit transition, the welding process will be stable with less spatter and smooth weld bead
通過分析不同焊接規范下的焊接電壓和電流的波形.研究了水蒸氣保護下電弧及熔滴過渡的特點，發現其電弧過程行為有「燃弧?熄弧?短路」和「燃弧?短路」兩種形式.在焊絲直徑和送絲速度一定的情況下，通過調節焊接迴路中的電感量和電源電壓，可以改變電弧的過程行為形式.若電弧過程呈「燃弧?熄弧?短路」交替進行，並且熄弧時間最短時，短路過渡頻率最高，在這種情況下，飛濺小，焊道成型好，焊接過程穩定 -
Msl power source produced by us, is able to control two high voltage transformer in a order, and can stop power supply when meet trouble at starting or meet abnormal extinguishment. thus, microwave leakage can be controled
我們做的微波硫燈電源能夠控制兩臺高壓變壓器先後啟動，能夠在微波硫燈啟動異常和突然熄滅的時候自動斷電，從而有效地控制了微波泄漏。 -
Abstract : the system composed of intelligent control modules for three - phase induction motors is introduced in this paper. this module can conduct starting, reverse braking, and reverse conrtol with current limiting resistance. besides, it can also detect low voltage, overload, and open circuit of 1 or 2 phases, and do protection according to the detection. it especially fits to the controlling of motors which often do starting, braking and reversing
文摘:介紹了一種智能三相電機控制模塊組成的系統，能在串電阻（電抗）起動、反接制動和換向控制的基礎上進行欠壓檢測、過載檢測、斷相檢測及電機故障保護.尤其適用於起動、制動和換向控制頻繁的電機控制場合 -
A zero - voltage starting method is brought forward which switch the starting from separate exciting to self - exciting successfully ; pll ( phase lock loop ) technology is employed to realize the frequency tracing and constant phase angle control ; igbt driving and protective circuit suitable for parallel inverter is developed, which successfully solve the problem of time compensating and overlapping regulation for the driving signals ; a novel and practical over - voltage protective method for parallel inverters is presented which effectively avoid the possible over - voltage destroy to the inverter. xu haiwen ( power electronics and electric driving ) directed by senior engineer peng yonglong
提出了一種零壓啟動的他激轉自激方法；通過採用鎖相環技術實現了逆變器工作頻率的自動跟蹤和容性逆變角度的恆值控制；設計了適用於並聯諧振型逆變器的igbt驅動與保護電路，解決了驅動信號的時間補償以及重疊角的可調問題；提出了一種新穎、實用的逆變器過壓保護方法，有效地解決了並聯型諧振逆變器過壓保護這一難題。 -
Llpa power push button switch is applicable to the motor of the voltage up to 500v and the capacity up to 3kw for directly starting run and breaking, also for infrequently turning on and off loaded current
Llpa系列控制按鈕開關是可適用於電壓500v和負載量為3kw的發動機直接運轉和阻斷，同時頻率運轉和電流負載。 -
Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。 -
Soft starters decline only the electric voltage and do not decline the frequency, and make the starting torque turn small, therefore the soft starters be applicable only to the induction motors which drive the low starting torque machine such as blower fan and pump. this paper designed a soft starter adopting the discrete frequency method to start induction motors. it declines not only the electric voltage, but also makes the frequency lower at the same time, so starting torque turns more
由於軟起動器只降壓不降頻，電機的起動轉矩較小，所以傳統軟起動器只適用於風機、水泵類低起動轉矩的負載。本文設計並研製了一種採用分級變頻方法的新型軟起動控制器，在降壓的同時實現有級變頻，從而提高了異步電動機的起動轉矩。 -
Starting current the meter can work corectly at rated voltage, rated frequency. when load currdnt is large then 0. 4 ib. power facotor : 1. running with no - load the meter use logic circuit to anti - creep
啟動電流：在額定電壓額定頻率功率因數為1的條件下，當負載電流大於0 . 4 ib時電度表都能正常工作。 -
The study of control strategy and performance include the performance of starting, acceleration and deceleration. study of commutation process includes the study of voltage and current of each phase and the converter capacitance
在控制策略的研究中，分別對起動、加速、減速等進行了研究，並比較了不同的控制參數帶來的不同的結果。 -
The experiment has validated feasibility of integral design scheme of starter / generator. it indicates that dses / g can start reliably, switching from starting to generating is simple, generating voltage is steady and fault generating can be implemented
通過實驗，驗證了起動/發電一體化設計方案的可行性，表明電勵磁雙凸極起動/發電機系統能可靠起動、起動/發電切換控制簡單、發電電壓穩定且可實現故障發電。 -
On the basis of the test about air conditioner, its load characteristics are analyzed, including the static characteristics, drop out characteristics, starting characteristics and its responses to voltage dips. it shows that the current impact can reach five to eight multiples when the air conditioner started and come back within 0. 3 to 0. 5 second. 0. 6 pu voltage is the critical voltage whether the air conditioner will stall
分析發現，空調啟動時電流沖擊倍數可達5 8倍，在0 . 3 0 . 5秒之內平息； 0 . 6u _ n為空調停機的臨界電壓，因此空調的電壓擾動特性可以分為兩種情況：一為較小擾動情況下空調尚未停機時的動態；另一為大擾動導致空調停機時的動態。 -
To reduce the high starting current as asynchronous motors start up directly and eliminate the negative influence that brought about by switching of contact when it starts up with reduced - voltage means, two new methods based on power electronics technology for improving the starting characteristics of three - phase induction motor are presented. one is alternative voltage regulator, the other is alternative voltage chopper. the three - phase regulating circuit - asynchronous motors system and the three phase chopper circuit - asynchronous motors system are analyzed and simulated with matlab
為解決上述問題，本文提出一種基於斬波方式的三相交流異步電動機的軟起動新方法，論文對電路的起動特性、功率因數、諧波以及控制策略進行了研究，模擬結果表明這種基於斬波方式的三相交流異步電動機的軟起動方法比基於三相交流調壓的三相交流異步電動機的軟起動方法具優越性。 -
With the model, direct starting, increasing voltage starting and current limit starting are studied and compared. the results of simulation suggest that current limit starting has good performance in starting current and torque limit and their oscillation restraint
從模擬結果可以看出，無論在減小起動電流沖擊、減小起動轉矩沖擊，還是在抑制電機電流、轉矩振蕩方面，採用限流軟起動方式都表現出良好的性能。 -
Our products has many good features such as high efficiency, energy saving, high power factor, low starting voltage and temperature, no voice and no frequency tlicking, prolong the tube s life etc
江蘇伯樂達集團年產電子鎮流器200萬只，企業通過iso9001認證，產品取得中國3c認證，歐洲ce gs認證。產品具有高效節能啟輝電壓低啟輝溫度低無噪音無頻閃等特點。 -
Combined starting switches ; heater plug starting switch with turn grip for a nominal voltage up to 24 v
組合式起動開關.第1部分:額定電壓最高可達24 v的有
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