《移動(dòng)通信開(kāi)關(guān)電源的新技術(shù)及其應(yīng)用》電氣工程及其自動(dòng)化畢業(yè)論文中英文翻譯(文件)
【正文】 ment work in the potentialbackup way,simultaneously because the munication facility power is big,is also big to the power source output current capacity request,therefore the munication facility uses the switching power supply uses various modules parallel output beginning. This requests when various modules parallel work the output current must be same, equally shares to the load, and when in the system the module increases or thereduction, in the system works various modules can automatically redistribute the output current, realizes the N+n module hot backup. At present various factories use automatically flow the technicalrealization way to be various, but the principle all is carries on thesampling parison to in the system module output current, then quitebad will control various modules the output voltage size, will bringin adjusts various modules the output current, will realize duringvarious modules to flow the work. The same precision sampling flowsthe electric circuit to be possible to cause during various modules toflow the error to be smaller than positive and negative 3%, greatlyenhanced the system reliability. Above introduced in the mobile munication system use high frequency switching power supply uses some new technologies, in these powerequipment besides have used above introduces the technology, but alsohas used battery charging voltage temperature pensation, theopening machine slow start, the longdistance digit dialingmonitoring, the breakdown automatic detection and so on the new technology, these new technical uses, enable the high frequencyswitching power supply each performance index all to have a largerscale enhancement, causes the high frequency switching power supply tobe more and more stable. At present in some high frequency switching power supply product alsohas used renewal the and so on frequency modulation, monolithicintegrated circuit control technology, these technical uses will beable to cause the high frequency switching power supply maturer andare perfect, understood, will track and grasps these new technologiesto be able constructs the bigger instruction function to our lineservice and the engineering design. 移動(dòng)通信開(kāi)關(guān)電源的新技術(shù)及其應(yīng)用 摘 要 本文介紹了目前移動(dòng)通信網(wǎng)中使用的開(kāi)關(guān)電源所采用的新技術(shù)和其實(shí)際應(yīng)用，了解和掌握這些新技術(shù)對(duì)設(shè)備維護(hù)和工程建設(shè)均具有重要的現(xiàn)實(shí)意義。開(kāi)關(guān)電源技術(shù)也從簡(jiǎn)單發(fā)展到復(fù)雜并趨向成熟。這些廠家的產(chǎn)品雖然在外觀上差異較大，但都采用了一些相同或類(lèi)似的新技術(shù)，因此產(chǎn)品質(zhì)量和性能指標(biāo)相對(duì)較好。激勵(lì)功率小（電壓激勵(lì)器件）、對(duì)溫度不敏感、無(wú)二次擊穿、開(kāi)關(guān)損耗低、脈沖拖尾電流小且易于并聯(lián)使用的優(yōu)點(diǎn)，在開(kāi)關(guān)電源中已取代了傳統(tǒng)雙極型晶體管而成為新的功率開(kāi)關(guān)器件。 采用功率因數(shù)補(bǔ)償電路 功率因數(shù)在電源系統(tǒng)中是一項(xiàng)非常重要的指標(biāo)，功 率 因 數(shù) (Pf)的定義為電網(wǎng)中突變或脈動(dòng)電流產(chǎn)生的有功功率和負(fù)載的視在功率之比，
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1