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電源可以分為(wei)很多(duo)種類。根據工作方式(shi)，分為(wei)后備式(shi)、在(zai)線(xian)互動(dong)式(shi)及在(zai)線(xian)式(shi)三大類。在(zai)線(xian)互動(dong)式(shi)UPS，又(you)稱互動(dong)式(shi)UPS，在(zai)市(shi)電(dian)(dian)正常時直(zhi)接由市(shi)電(dian)(dian)向負載供電(dian)(dian)，當(dang)市(shi)電(dian)(dian)偏低或偏高(gao)時，通過UPS內部穩壓(ya)線(xian)路穩壓(ya)后輸出(chu)，當(dang)市(shi)電(dian)(dian)異常或停電(dian)(dian)時，通過轉(zhuan)換開(kai)關轉(zhuan)為(wei)電(dian)(dian)池逆變供電(dian)(dian)。

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在(zai)線(xian)(xian)互動(dong)式(shi)(shi)(shi)(shi)UPS電(dian)源是介于后備式(shi)(shi)(shi)(shi)UPS和(he)在(zai)線(xian)(xian)式(shi)(shi)(shi)(shi)UPS工作(zuo)方(fang)式(shi)(shi)(shi)(shi)之間(jian)的UPS設(she)備，它集(ji)中了(le)后備式(shi)(shi)(shi)(shi)UPS效率高(gao)(gao)和(he)在(zai)線(xian)(xian)式(shi)(shi)(shi)(shi)UPS供電(dian)質量高(gao)(gao)的優點。在(zai)線(xian)(xian)互動(dong)式(shi)(shi)(shi)(shi)UPS電(dian)源轉換時(shi)間(jian)在(zai)0.4毫秒，一般要(yao)求不高(gao)(gao)的設(she)備可以推薦使用在(zai)線(xian)(xian)互動(dong)式(shi)(shi)(shi)(shi)UPS。

在(zai)線(xian)互動式(shi)UPS電(dian)(dian)源在(zai)市(shi)電(dian)(dian)正常(chang)時(shi)直接由(you)市(shi)電(dian)(dian)向負載供電(dian)(dian)，當(dang)市(shi)電(dian)(dian)偏(pian)低(di)或偏(pian)高(gao)時(shi)，通(tong)過(guo)UPS內部穩(wen)壓線(xian)路穩(wen)壓后輸(shu)(shu)出，當(dang)市(shi)電(dian)(dian)異(yi)常(chang)或停(ting)電(dian)(dian)時(shi)，通(tong)過(guo)轉換(huan)(huan)開關轉為(wei)電(dian)(dian)池逆變供電(dian)(dian)。有(you)較寬的輸(shu)(shu)入(ru)電(dian)(dian)壓范圍，噪音低(di)，體積小等特點(dian),但同樣存在(zai)切換(huan)(huan)時(shi)間。在(zai)線(xian)互動式(shi)UPS電(dian)(dian)源結合了(le)后備式(shi)和在(zai)線(xian)式(shi)其(qi)優(you)點(dian)，具有(you)價格低(di)廉、后期維護成本低(di)、0ms轉換(huan)(huan)等特點(dian)，其(qi)工作狀態(tai)也可分為(wei)市(shi)電(dian)(dian)正常(chang)狀態(tai)與市(shi)電(dian)(dian)異(yi)常(chang)狀態(tai)。

在線互動式UPS電源的優缺點

與(yu)后備(bei)式(shi)UPS相比(bi)(bi)，在線(xian)互動(dong)式(shi)UPS的保護功能(neng)較(jiao)(jiao)強(qiang)，逆變器輸出電(dian)(dian)壓波(bo)(bo)形較(jiao)(jiao)好，一般為正(zheng)弦(xian)(xian)波(bo)(bo)，而其(qi)最大的優(you)點(dian)是具有(you)較(jiao)(jiao)強(qiang)的軟(ruan)件功能(neng)，可以(yi)方便地上網，進行UPS的遠程控制和智能(neng)化管(guan)理。可自動(dong)偵測外部輸入電(dian)(dian)壓是否(fou)處(chu)于(yu)正(zheng)常范圍之內，如有(you)偏差可由穩壓電(dian)(dian)路升壓或(huo)降(jiang)壓，提供比(bi)(bi)較(jiao)(jiao)穩定的正(zheng)弦(xian)(xian)波(bo)(bo)輸出電(dian)(dian)壓。

而且它與(yu)計(ji)算機之(zhi)間可以(yi)通(tong)過數據(ju)接口（如RS-232串(chuan)口）進(jin)行數據(ju)通(tong)訊(xun)，通(tong)過監(jian)控(kong)軟件，用(yong)戶可直接從電腦屏幕上(shang)監(jian)控(kong)電源及UPS狀況，簡化、方便(bian)管理工(gong)作，并(bing)可提高計(ji)算機系統的可靠性。

這種在線(xian)互動式UPS集中了后備(bei)式UPS效率(lv)高和(he)在線(xian)式UPS供電質量高的優點，但其穩頻特性(xing)能不是十分理想，不適合做常延時的UPS電源。

在線互動式UPS與在線式UPS電源區別

在(zai)線(xian)式UPS電(dian)(dian)(dian)源(yuan)在(zai)很寬的(de)電(dian)(dian)(dian)壓(ya)范(fan)圍內，兩(liang)級變(bian)(bian)換(huan)，不管輸(shu)入(ru)幅值或者頻(pin)率變(bian)(bian)化，輸(shu)出(chu)都是穩(wen)定的(de)電(dian)(dian)(dian)壓(ya)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)入(ru)電(dian)(dian)(dian)壓(ya)或者頻(pin)率有變(bian)(bian)化的(de)時候(hou)，輸(shu)出(chu)和(he)輸(shu)入(ru)一樣，和(he)在(zai)線(xian)式UPS電(dian)(dian)(dian)源(yuan)相(xiang)比差遠了。