在線互動式UPS電源的工作原理

UPS是一種即使在市電停電的情況下，也能為用電設備提供持續的穩壓穩頻的交流電輸出的電源裝置。UPS通常帶有儲能裝置，根據工作方式，輸出容量，相數等的不同，UPS電源可以分(fen)為(wei)很多(duo)種類。根據工作方式(shi)(shi)(shi)，分(fen)為(wei)后備(bei)式(shi)(shi)(shi)、在線互動(dong)式(shi)(shi)(shi)及在線式(shi)(shi)(shi)三大類。在線互動(dong)式(shi)(shi)(shi)UPS，又稱互動(dong)式(shi)(shi)(shi)UPS，在市電(dian)正常時直(zhi)接由市電(dian)向負載供電(dian)，當(dang)市電(dian)偏低或(huo)偏高(gao)時，通過(guo)UPS內部穩(wen)壓(ya)線路(lu)穩(wen)壓(ya)后輸出，當(dang)市電(dian)異常或(huo)停電(dian)時，通過(guo)轉(zhuan)換開(kai)關轉(zhuan)為(wei)電(dian)池逆變供電(dian)。

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在(zai)線互動(dong)式(shi)UPS電源(yuan)是介于后備(bei)(bei)式(shi)UPS和在(zai)線式(shi)UPS工(gong)作方(fang)式(shi)之間的UPS設備(bei)(bei)，它(ta)集(ji)中了后備(bei)(bei)式(shi)UPS效率(lv)高和在(zai)線式(shi)UPS供電質量高的優點。在(zai)線互動(dong)式(shi)UPS電源(yuan)轉換時間在(zai)0.4毫秒，一(yi)般要(yao)求(qiu)不高的設備(bei)(bei)可以推薦使用在(zai)線互動(dong)式(shi)UPS。

在線互(hu)動式UPS電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)在市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)正(zheng)常時直(zhi)接由市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)向負(fu)載供(gong)電(dian)(dian)(dian)(dian)(dian)，當(dang)市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)偏低或偏高時，通過UPS內(nei)部(bu)穩壓(ya)(ya)線路穩壓(ya)(ya)后輸出(chu)，當(dang)市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)異(yi)常或停電(dian)(dian)(dian)(dian)(dian)時，通過轉(zhuan)換開關轉(zhuan)為(wei)電(dian)(dian)(dian)(dian)(dian)池逆變(bian)供(gong)電(dian)(dian)(dian)(dian)(dian)。有較寬的輸入電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)范圍，噪音低，體積小等特點,但同(tong)樣存在切換時間(jian)。在線互(hu)動式UPS電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)結合了后備式和在線式其(qi)優點，具(ju)有價(jia)格低廉、后期維(wei)護成本(ben)低、0ms轉(zhuan)換等特點，其(qi)工作(zuo)狀(zhuang)態(tai)也可分(fen)為(wei)市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)正(zheng)常狀(zhuang)態(tai)與(yu)市(shi)(shi)電(dian)(dian)(dian)(dian)(dian)異(yi)常狀(zhuang)態(tai)。

在線互動式UPS電源的優缺點

與后備式UPS相比，在線互動(dong)式UPS的(de)保護功(gong)能(neng)較強，逆變器輸出(chu)電(dian)(dian)壓(ya)波(bo)形較好，一般為正(zheng)弦(xian)波(bo)，而其最大的(de)優點是具(ju)有較強的(de)軟件功(gong)能(neng)，可(ke)以方便地上網(wang)，進行UPS的(de)遠程控制和智(zhi)能(neng)化管(guan)理。可(ke)自動(dong)偵(zhen)測(ce)外(wai)部輸入電(dian)(dian)壓(ya)是否處于正(zheng)常范圍之內，如有偏差(cha)可(ke)由穩壓(ya)電(dian)(dian)路升(sheng)壓(ya)或降(jiang)壓(ya)，提(ti)供比較穩定的(de)正(zheng)弦(xian)波(bo)輸出(chu)電(dian)(dian)壓(ya)。

而且它(ta)與計算機之間(jian)可(ke)(ke)以通(tong)過(guo)數據(ju)接(jie)口（如RS-232串口）進行數據(ju)通(tong)訊，通(tong)過(guo)監控軟件(jian)，用戶可(ke)(ke)直接(jie)從電腦屏(ping)幕上監控電源及(ji)UPS狀況，簡化、方便管理工作，并可(ke)(ke)提(ti)高(gao)計算機系統的(de)可(ke)(ke)靠(kao)性(xing)。

這種(zhong)在(zai)(zai)線(xian)互動(dong)式UPS集中了后備式UPS效率高(gao)和在(zai)(zai)線(xian)式UPS供(gong)電(dian)質(zhi)量(liang)高(gao)的優點，但(dan)其穩頻特(te)性能(neng)不是十分理想(xiang)，不適(shi)合做常延(yan)時的UPS電(dian)源。

在線互動式UPS與在線式UPS電源區別

在(zai)線(xian)式UPS電(dian)源在(zai)很寬的電(dian)壓范圍內，兩級變換，不管輸(shu)(shu)入幅值或者(zhe)頻(pin)率變化(hua)，輸(shu)(shu)出(chu)都是(shi)穩定的電(dian)壓和(he)頻(pin)率。在(zai)線(xian)互動式UPS大多數情況下工作在(zai)旁路，輸(shu)(shu)入電(dian)壓或者(zhe)頻(pin)率有變化(hua)的時候，輸(shu)(shu)出(chu)和(he)輸(shu)(shu)入一(yi)樣，和(he)在(zai)線(xian)式UPS電(dian)源相比差遠(yuan)了。