UPS電源和EPS電源的區別
2020/5/18 9:24:11??????點擊:
隨著經濟的(de)發展和社會安(an)全意(yi)識(shi)的(de)加強,消防安(an)全越來越被人們重視。EPS以其特有的(de)優越性得到廣泛的(de)應用。同時,許多企(qi)業紛紛建立企(qi)業內(nei)部局域網,網絡化辦(ban)公正逐漸成為一種趨(qu)勢,UPS不間斷電(dian)源(yuan)產業也得到了廣闊的(de)發展,其中,生產應急電(dian)源(yuan)的(de)企(qi)業在(zai)近十幾年中迅(xun)速增(zeng)加。
為了(le)適應應急電(dian)(dian)源迅速發展(zhan)的(de)需(xu)要,國家相關部門(men)也陸續出臺了(le)諸(zhu)如《消防(fang)應急燈(deng)具(ju)》(GB17945-2000)、《不間斷(duan)電(dian)(dian)源設(she)備(bei)》(GB/T7260-187)、《信息技術(shu)設(she)備(bei)用(yong)不間斷(duan)電(dian)(dian)源通用(yong)技術(shu)條件》(GB/T14715-1993)、《低壓直流電(dian)(dian)源設(she)備(bei)的(de)特性和(he)安(an)全要求》(GB/T17478-1998)等(deng)相關標準。
然而,應急電(dian)源設(she)計與使用(yong)對電(dian)氣工程師而言還是一種比(bi)較新的技術,很(hen)多(duo)工程師對EPS和UPS的區別(bie)(bie)與聯系并不清楚。將對UPS和EPS電(dian)源的區別(bie)(bie)進(jin)行介紹。
EPS電源簡介
EPS(EmergencySystem)是一(yi)種允許短時(shi)電(dian)(dian)(dian)(dian)源中斷的(de)(de)(de)應急(ji)電(dian)(dian)(dian)(dian)源裝置(zhi),主要(yao)針對城市中高層建(jian)筑中的(de)(de)(de)應急(ji)照(zhao)明(ming)、消防設施以(yi)及(ji)特別重要(yao)負荷,尤其(qi)(qi)在(zai)解決照(zhao)明(ming)用電(dian)(dian)(dian)(dian)或(huo)只有一(yi)路市電(dian)(dian)(dian)(dian)缺少第二路電(dian)(dian)(dian)(dian)源,代替(ti)發電(dian)(dian)(dian)(dian)機組構成第二電(dian)(dian)(dian)(dian)源或(huo)在(zai)需要(yao)第三(san)電(dian)(dian)(dian)(dian)源的(de)(de)(de)場合使用時(shi),能夠收到非常好的(de)(de)(de)效果。EPS電(dian)(dian)(dian)(dian)源裝置(zhi)在(zai)供電(dian)(dian)(dian)(dian)網絡正常供電(dian)(dian)(dian)(dian)時(shi),其(qi)(qi)應急(ji)供電(dian)(dian)(dian)(dian)系統處于(yu)“睡(shui)眠”的(de)(de)(de)充電(dian)(dian)(dian)(dian)浮(fu)狀態,只有在(zai)應急(ji)狀態下才為負載供電(dian)(dian)(dian)(dian)。
EPS電(dian)(dian)(dian)源(yuan)的特點:當(dang)電(dian)(dian)(dian)網有(you)(you)電(dian)(dian)(dian)時(shi),EPS處于(yu)(yu)靜(jing)態,無(wu)(wu)噪音。有(you)(you)市電(dian)(dian)(dian)時(shi),噪音小于(yu)(yu)60db,不(bu)需排(pai)煙、防震處理,而且無(wu)(wu)公害(hai)、無(wu)(wu)火災隱患;市電(dian)(dian)(dian)斷電(dian)(dian)(dian),EPS可(ke)自動切換(huan)(huan),實現無(wu)(wu)人值(zhi)守。電(dian)(dian)(dian)網供電(dian)(dian)(dian)與EPS電(dian)(dian)(dian)源(yuan)供電(dian)(dian)(dian)相互切換(huan)(huan)的時(shi)間均為0.1~0.25s。其帶載能力強(qiang),適用于(yu)(yu)電(dian)(dian)(dian)感(gan)性、電(dian)(dian)(dian)容性及綜合(he)性負(fu)載的設備(bei),如電(dian)(dian)(dian)梯、水泵、風機、辦公自動化設備(bei)、應(ying)急照明等,而且使(shi)用可(ke)靠。
由于EPS在市電(dian)(dian)(dian)(dian)正常時處(chu)于“睡眠”狀態,只有市電(dian)(dian)(dian)(dian)斷電(dian)(dian)(dian)(dian)EPS才正式投(tou)入工作,所以(yi)主機壽命很長,某些廠(chang)家生(sheng)產的(de)EPS電(dian)(dian)(dian)(dian)源壽命可(ke)達20年(nian)以(yi)上。EPS可(ke)以(yi)適應惡(e)劣的(de)環境,如地(di)下室、配(pei)電(dian)(dian)(dian)(dian)室甚至建筑豎(shu)井,也(ye)可(ke)以(yi)緊靠應急(ji)負荷使用場所就地(di)設置,減(jian)少供電(dian)(dian)(dian)(dian)線路。
對于(yu)某些功率教大的(de)用電(dian)(dian)設施,如(ru):消防(fang)(fang)水(shui)泵、風機(ji),EPS可(ke)直接與電(dian)(dian)機(ji)相連變頻啟動(dong)后,再進入正常(chang)(chang)運行狀態(tai),省去(qu)電(dian)(dian)機(ji)的(de)軟啟動(dong)和控制(zhi)箱等(deng)設置。標準型EPS應(ying)急(ji)(ji)電(dian)(dian)源應(ying)急(ji)(ji)時(shi)(shi)間為1h(有延時(shi)(shi)接口),可(ke)長可(ke)短(duan),應(ying)用范圍(wei)廣泛。綜(zong)上(shang)所述,EPS應(ying)急(ji)(ji)電(dian)(dian)源是一種可(ke)靠的(de)綠色應(ying)急(ji)(ji)供電(dian)(dian)電(dian)(dian)源,它非常(chang)(chang)適用于(yu)高層建筑消防(fang)(fang)設施沒有第二(er)路市(shi)電(dian)(dian),又不(bu)便使用柴油發電(dian)(dian)機(ji)組的(de)場合。
使(shi)用(yong)EPS應(ying)急電(dian)(dian)源(yuan)(yuan)既可以滿足(zu)規范要求,又節省了人力、物力。同時,EPS電(dian)(dian)源(yuan)(yuan)也適用(yong)于(yu)一(yi)些工程中的(de)(de)局部重要場合,作(zuo)為(wei)末端應(ying)急備(bei)用(yong)電(dian)(dian)源(yuan)(yuan)。EPS電(dian)(dian)源(yuan)(yuan)作(zuo)為(wei)一(yi)種(zhong)可靠的(de)(de)應(ying)急供(gong)電(dian)(dian)電(dian)(dian)源(yuan)(yuan),可以靈活地運用(yong)于(yu)消防(fang)供(gong)電(dian)(dian)回路末端、個別重要場合。EPS應(ying)急電(dian)(dian)源(yuan)(yuan)的(de)(de)使(shi)用(yong),為(wei)消防(fang)安(an)全提供(gong)了更(geng)有力的(de)(de)保障。
UPS電源簡介
UPS(UninterruptiblePowerSystem)不間斷電源,是一種含有儲能裝置,以逆變器為主要組成部分的恒壓、恒頻的不間斷電源。其主要作用是通過UPS系統,對計算機網絡系統或其他電力電子設備可靠而不間斷地進行供電。
當(dang)市(shi)(shi)電輸入正常(chang)時(shi),UPS將(jiang)市(shi)(shi)電穩(wen)壓后供(gong)給負載(zai)使(shi)用(yong),此時(shi),UPS的(de)作用(yong)相當(dang)于(yu)一臺(tai)交流(liu)市(shi)(shi)電穩(wen)壓器(qi),同時(shi)它還向(xiang)機內儲能部分供(gong)電。當(dang)市(shi)(shi)電中斷(duan)(事(shi)故(gu)停電)時(shi),UPS立(li)即(ji)將(jiang)機內存儲的(de)電能通過逆變轉換(huan)的(de)方法向(xiang)負載(zai)繼續(xu)供(gong)應220V交流(liu)電,使(shi)負載(zai)維(wei)持正常(chang)工作并保護(hu)負載(zai)軟、硬件(jian)不受(shou)損壞,使(shi)整(zheng)個網絡(luo)數據(ju)不會因斷(duan)電事(shi)故(gu)而導致(zhi)數據(ju)丟失。電源按其(qi)工作原理可分為后備式、在線(xian)(xian)式以及在線(xian)(xian)互(hu)動式三種。
后(hou)備(bei)式(shi)UPS:平時處于蓄電(dian)(dian)池充(chong)電(dian)(dian)狀態(tai),在停電(dian)(dian)時逆變器緊急切換到工(gong)作狀態(tai),將電(dian)(dian)池提供的(de)(de)直流(liu)電(dian)(dian)轉變為(wei)穩定的(de)(de)交流(liu)電(dian)(dian)輸出,后(hou)備(bei)式(shi)UPS也被稱為(wei)離線式(shi)UPS。后(hou)備(bei)式(shi)UPS電(dian)(dian)源的(de)(de)優點(dian)是:運行(xing)效率高、噪音(yin)低、價(jia)格相(xiang)對(dui)便宜(yi),主(zhu)要適用(yong)于市電(dian)(dian)波動(dong)小,對(dui)供電(dian)(dian)質(zhi)量(liang)要求低的(de)(de)場合,比較適合家庭使用(yong)。
然而這種UPS的(de)切換(huan)時(shi)間(jian)(jian)很短,一般介于2~10ms,而計算機(ji)本身的(de)交換(huan)式電(dian)源供(gong)應器(qi)在(zai)斷(duan)電(dian)時(shi)可維持(chi)10ms左右,所以個(ge)人計算機(ji)系統一般不會因為這個(ge)切換(huan)時(shi)間(jian)(jian)而出現問(wen)題。因此不適合用在(zai)關鍵性(xing)的(de),供(gong)電(dian)不能中斷(duan)的(de)場所。后(hou)備(bei)式UPS一般只(zhi)能持(chi)續(xu)供(gong)電(dian)幾分鐘(zhong)到幾十分鐘(zhong),主要是讓您(nin)有時(shi)間(jian)(jian)備(bei)份數據,并盡快結束手頭工作,其價格也比(bi)較低,比(bi)如個(ge)人家庭用戶(hu),就可配備(bei)小功率的(de)后(hou)備(bei)式UPS。
在(zai)線(xian)式(shi)UPS:這種UPS一直使其(qi)逆變(bian)(bian)器(qi)處于工作(zuo)狀態,首先通(tong)過(guo)(guo)電(dian)路將(jiang)外(wai)部交流(liu)電(dian)轉(zhuan)變(bian)(bian)為直流(liu)電(dian),再通(tong)過(guo)(guo)高質量的逆變(bian)(bian)器(qi)將(jiang)直流(liu)電(dian)轉(zhuan)換(huan)為高質量的正弦波(bo)交流(liu)電(dian)輸出給計算機。在(zai)線(xian)式(shi)UPS在(zai)供電(dian)狀況下的主(zhu)要功能是(shi)穩壓及(ji)防止電(dian)波(bo)干(gan)擾(rao)。停電(dian)時(shi)則使用(yong)備用(yong)直流(liu)電(dian)源(yuan)(蓄電(dian)池(chi)組(zu))給逆變(bian)(bian)器(qi)供電(dian)。由(you)于逆變(bian)(bian)器(qi)一直在(zai)工作(zuo),不(bu)存在(zai)切換(huan)時(shi)間問題,因此適用(yong)于對電(dian)源(yuan)有嚴格要求的場合(he)。
在(zai)線式UPS不同(tong)于(yu)(yu)后備(bei)式UPS,持續供電(dian)時間長,一般為幾(ji)個小(xiao)時,甚至十幾(ji)個小(xiao)時。它的(de)(de)主(zhu)要功能是讓您在(zai)停(ting)電(dian)的(de)(de)情(qing)況下(xia)仍可像(xiang)平常一樣(yang)工作。顯(xian)然,由于(yu)(yu)其功能的(de)(de)特殊性,價格也明顯(xian)貴(gui)很多。比較適(shi)用于(yu)(yu)計算機、交通(tong)(tong)、銀行、證(zheng)券、通(tong)(tong)信、醫療(liao)、工業控(kong)制(zhi)等電(dian)源要求嚴格的(de)(de)行業。
在線互動式UPS:這是(shi)(shi)一種(zhong)智能化的(de)(de)(de)UPS,是(shi)(shi)指在市電(dian)(dian)正常輸入時(shi),UPS的(de)(de)(de)逆變(bian)(bian)(bian)器處于反向(xiang)工(gong)作(即整流工(gong)作狀態),給電(dian)(dian)池組充電(dian)(dian)。在市電(dian)(dian)異(yi)常時(shi)逆變(bian)(bian)(bian)器立刻轉為逆變(bian)(bian)(bian)工(gong)作狀態,將電(dian)(dian)池組電(dian)(dian)能轉換為交流電(dian)(dian)輸出,同后(hou)備式UPS相比,在線互動式UPS的(de)(de)(de)保護功能較強(qiang),逆變(bian)(bian)(bian)器輸出電(dian)(dian)壓波形較好,一般為正弦波。具有(you)較強(qiang)的(de)(de)(de)軟件功能,可以方便地(di)上網進(jin)行UPS的(de)(de)(de)遠(yuan)程(cheng)控制和智能化管(guan)理。
可(ke)(ke)自(zi)動監(jian)測外部輸入(ru)電(dian)(dian)(dian)壓(ya)是(shi)(shi)否(fou)處于(yu)正(zheng)常范(fan)圍(wei)之(zhi)內,如有偏差可(ke)(ke)由(you)穩(wen)(wen)壓(ya)電(dian)(dian)(dian)器升壓(ya)或降壓(ya),提(ti)供比較穩(wen)(wen)定(ding)的(de)正(zheng)弦波輸出電(dian)(dian)(dian)壓(ya)。而且它與計(ji)算機之(zhi)間可(ke)(ke)以通過數據接口(如RS-232串口)進行數據通訊,通過監(jian)控軟件,用戶可(ke)(ke)直接從電(dian)(dian)(dian)腦屏(ping)幕上監(jian)控電(dian)(dian)(dian)源(yuan)及UPS狀(zhuang)況,方便管(guan)理工作(zuo)并(bing)可(ke)(ke)提(ti)高計(ji)算機系統的(de)可(ke)(ke)靠性。這種UPS集中(zhong)了(le)后備式UPS效率高和(he)在線式UPS供電(dian)(dian)(dian)質量(liang)高的(de)優點,但其穩(wen)(wen)頻性不是(shi)(shi)十分理想(xiang),不適合做長延時的(de)UPS電(dian)(dian)(dian)源(yuan)。
為了(le)適應應急電(dian)(dian)源迅速發展(zhan)的(de)需(xu)要,國家相關部門(men)也陸續出臺了(le)諸(zhu)如《消防(fang)應急燈(deng)具(ju)》(GB17945-2000)、《不間斷(duan)電(dian)(dian)源設(she)備(bei)》(GB/T7260-187)、《信息技術(shu)設(she)備(bei)用(yong)不間斷(duan)電(dian)(dian)源通用(yong)技術(shu)條件》(GB/T14715-1993)、《低壓直流電(dian)(dian)源設(she)備(bei)的(de)特性和(he)安(an)全要求》(GB/T17478-1998)等(deng)相關標準。
然而,應急電(dian)源設(she)計與使用(yong)對電(dian)氣工程師而言還是一種比(bi)較新的技術,很(hen)多(duo)工程師對EPS和UPS的區別(bie)(bie)與聯系并不清楚。將對UPS和EPS電(dian)源的區別(bie)(bie)進(jin)行介紹。
EPS電源簡介
EPS(EmergencySystem)是一(yi)種允許短時(shi)電(dian)(dian)(dian)(dian)源中斷的(de)(de)(de)應急(ji)電(dian)(dian)(dian)(dian)源裝置(zhi),主要(yao)針對城市中高層建(jian)筑中的(de)(de)(de)應急(ji)照(zhao)明(ming)、消防設施以(yi)及(ji)特別重要(yao)負荷,尤其(qi)(qi)在(zai)解決照(zhao)明(ming)用電(dian)(dian)(dian)(dian)或(huo)只有一(yi)路市電(dian)(dian)(dian)(dian)缺少第二路電(dian)(dian)(dian)(dian)源,代替(ti)發電(dian)(dian)(dian)(dian)機組構成第二電(dian)(dian)(dian)(dian)源或(huo)在(zai)需要(yao)第三(san)電(dian)(dian)(dian)(dian)源的(de)(de)(de)場合使用時(shi),能夠收到非常好的(de)(de)(de)效果。EPS電(dian)(dian)(dian)(dian)源裝置(zhi)在(zai)供電(dian)(dian)(dian)(dian)網絡正常供電(dian)(dian)(dian)(dian)時(shi),其(qi)(qi)應急(ji)供電(dian)(dian)(dian)(dian)系統處于(yu)“睡(shui)眠”的(de)(de)(de)充電(dian)(dian)(dian)(dian)浮(fu)狀態,只有在(zai)應急(ji)狀態下才為負載供電(dian)(dian)(dian)(dian)。
EPS電(dian)(dian)(dian)源(yuan)的特點:當(dang)電(dian)(dian)(dian)網有(you)(you)電(dian)(dian)(dian)時(shi),EPS處于(yu)(yu)靜(jing)態,無(wu)(wu)噪音。有(you)(you)市電(dian)(dian)(dian)時(shi),噪音小于(yu)(yu)60db,不(bu)需排(pai)煙、防震處理,而且無(wu)(wu)公害(hai)、無(wu)(wu)火災隱患;市電(dian)(dian)(dian)斷電(dian)(dian)(dian),EPS可(ke)自動切換(huan)(huan),實現無(wu)(wu)人值(zhi)守。電(dian)(dian)(dian)網供電(dian)(dian)(dian)與EPS電(dian)(dian)(dian)源(yuan)供電(dian)(dian)(dian)相互切換(huan)(huan)的時(shi)間均為0.1~0.25s。其帶載能力強(qiang),適用于(yu)(yu)電(dian)(dian)(dian)感(gan)性、電(dian)(dian)(dian)容性及綜合(he)性負(fu)載的設備(bei),如電(dian)(dian)(dian)梯、水泵、風機、辦公自動化設備(bei)、應(ying)急照明等,而且使(shi)用可(ke)靠。
由于EPS在市電(dian)(dian)(dian)(dian)正常時處(chu)于“睡眠”狀態,只有市電(dian)(dian)(dian)(dian)斷電(dian)(dian)(dian)(dian)EPS才正式投(tou)入工作,所以(yi)主機壽命很長,某些廠(chang)家生(sheng)產的(de)EPS電(dian)(dian)(dian)(dian)源壽命可(ke)達20年(nian)以(yi)上。EPS可(ke)以(yi)適應惡(e)劣的(de)環境,如地(di)下室、配(pei)電(dian)(dian)(dian)(dian)室甚至建筑豎(shu)井,也(ye)可(ke)以(yi)緊靠應急(ji)負荷使用場所就地(di)設置,減(jian)少供電(dian)(dian)(dian)(dian)線路。
對于(yu)某些功率教大的(de)用電(dian)(dian)設施,如(ru):消防(fang)(fang)水(shui)泵、風機(ji),EPS可(ke)直接與電(dian)(dian)機(ji)相連變頻啟動(dong)后,再進入正常(chang)(chang)運行狀態(tai),省去(qu)電(dian)(dian)機(ji)的(de)軟啟動(dong)和控制(zhi)箱等(deng)設置。標準型EPS應(ying)急(ji)(ji)電(dian)(dian)源應(ying)急(ji)(ji)時(shi)(shi)間為1h(有延時(shi)(shi)接口),可(ke)長可(ke)短(duan),應(ying)用范圍(wei)廣泛。綜(zong)上(shang)所述,EPS應(ying)急(ji)(ji)電(dian)(dian)源是一種可(ke)靠的(de)綠色應(ying)急(ji)(ji)供電(dian)(dian)電(dian)(dian)源,它非常(chang)(chang)適用于(yu)高層建筑消防(fang)(fang)設施沒有第二(er)路市(shi)電(dian)(dian),又不(bu)便使用柴油發電(dian)(dian)機(ji)組的(de)場合。
使(shi)用(yong)EPS應(ying)急電(dian)(dian)源(yuan)(yuan)既可以滿足(zu)規范要求,又節省了人力、物力。同時,EPS電(dian)(dian)源(yuan)(yuan)也適用(yong)于(yu)一(yi)些工程中的(de)(de)局部重要場合,作(zuo)為(wei)末端應(ying)急備(bei)用(yong)電(dian)(dian)源(yuan)(yuan)。EPS電(dian)(dian)源(yuan)(yuan)作(zuo)為(wei)一(yi)種(zhong)可靠的(de)(de)應(ying)急供(gong)電(dian)(dian)電(dian)(dian)源(yuan)(yuan),可以靈活地運用(yong)于(yu)消防(fang)供(gong)電(dian)(dian)回路末端、個別重要場合。EPS應(ying)急電(dian)(dian)源(yuan)(yuan)的(de)(de)使(shi)用(yong),為(wei)消防(fang)安(an)全提供(gong)了更(geng)有力的(de)(de)保障。
UPS電源簡介
UPS(UninterruptiblePowerSystem)不間斷電源,是一種含有儲能裝置,以逆變器為主要組成部分的恒壓、恒頻的不間斷電源。其主要作用是通過UPS系統,對計算機網絡系統或其他電力電子設備可靠而不間斷地進行供電。
當(dang)市(shi)(shi)電輸入正常(chang)時(shi),UPS將(jiang)市(shi)(shi)電穩(wen)壓后供(gong)給負載(zai)使(shi)用(yong),此時(shi),UPS的(de)作用(yong)相當(dang)于(yu)一臺(tai)交流(liu)市(shi)(shi)電穩(wen)壓器(qi),同時(shi)它還向(xiang)機內儲能部分供(gong)電。當(dang)市(shi)(shi)電中斷(duan)(事(shi)故(gu)停電)時(shi),UPS立(li)即(ji)將(jiang)機內存儲的(de)電能通過逆變轉換(huan)的(de)方法向(xiang)負載(zai)繼續(xu)供(gong)應220V交流(liu)電,使(shi)負載(zai)維(wei)持正常(chang)工作并保護(hu)負載(zai)軟、硬件(jian)不受(shou)損壞,使(shi)整(zheng)個網絡(luo)數據(ju)不會因斷(duan)電事(shi)故(gu)而導致(zhi)數據(ju)丟失。電源按其(qi)工作原理可分為后備式、在線(xian)(xian)式以及在線(xian)(xian)互(hu)動式三種。
后(hou)備(bei)式(shi)UPS:平時處于蓄電(dian)(dian)池充(chong)電(dian)(dian)狀態(tai),在停電(dian)(dian)時逆變器緊急切換到工(gong)作狀態(tai),將電(dian)(dian)池提供的(de)(de)直流(liu)電(dian)(dian)轉變為(wei)穩定的(de)(de)交流(liu)電(dian)(dian)輸出,后(hou)備(bei)式(shi)UPS也被稱為(wei)離線式(shi)UPS。后(hou)備(bei)式(shi)UPS電(dian)(dian)源的(de)(de)優點(dian)是:運行(xing)效率高、噪音(yin)低、價(jia)格相(xiang)對(dui)便宜(yi),主(zhu)要適用(yong)于市電(dian)(dian)波動(dong)小,對(dui)供電(dian)(dian)質(zhi)量(liang)要求低的(de)(de)場合,比較適合家庭使用(yong)。
然而這種UPS的(de)切換(huan)時(shi)間(jian)(jian)很短,一般介于2~10ms,而計算機(ji)本身的(de)交換(huan)式電(dian)源供(gong)應器(qi)在(zai)斷(duan)電(dian)時(shi)可維持(chi)10ms左右,所以個(ge)人計算機(ji)系統一般不會因為這個(ge)切換(huan)時(shi)間(jian)(jian)而出現問(wen)題。因此不適合用在(zai)關鍵性(xing)的(de),供(gong)電(dian)不能中斷(duan)的(de)場所。后(hou)備(bei)式UPS一般只(zhi)能持(chi)續(xu)供(gong)電(dian)幾分鐘(zhong)到幾十分鐘(zhong),主要是讓您(nin)有時(shi)間(jian)(jian)備(bei)份數據,并盡快結束手頭工作,其價格也比(bi)較低,比(bi)如個(ge)人家庭用戶(hu),就可配備(bei)小功率的(de)后(hou)備(bei)式UPS。
在(zai)線(xian)式(shi)UPS:這種UPS一直使其(qi)逆變(bian)(bian)器(qi)處于工作(zuo)狀態,首先通(tong)過(guo)(guo)電(dian)路將(jiang)外(wai)部交流(liu)電(dian)轉(zhuan)變(bian)(bian)為直流(liu)電(dian),再通(tong)過(guo)(guo)高質量的逆變(bian)(bian)器(qi)將(jiang)直流(liu)電(dian)轉(zhuan)換(huan)為高質量的正弦波(bo)交流(liu)電(dian)輸出給計算機。在(zai)線(xian)式(shi)UPS在(zai)供電(dian)狀況下的主(zhu)要功能是(shi)穩壓及(ji)防止電(dian)波(bo)干(gan)擾(rao)。停電(dian)時(shi)則使用(yong)備用(yong)直流(liu)電(dian)源(yuan)(蓄電(dian)池(chi)組(zu))給逆變(bian)(bian)器(qi)供電(dian)。由(you)于逆變(bian)(bian)器(qi)一直在(zai)工作(zuo),不(bu)存在(zai)切換(huan)時(shi)間問題,因此適用(yong)于對電(dian)源(yuan)有嚴格要求的場合(he)。
在(zai)線式UPS不同(tong)于(yu)(yu)后備(bei)式UPS,持續供電(dian)時間長,一般為幾(ji)個小(xiao)時,甚至十幾(ji)個小(xiao)時。它的(de)(de)主(zhu)要功能是讓您在(zai)停(ting)電(dian)的(de)(de)情(qing)況下(xia)仍可像(xiang)平常一樣(yang)工作。顯(xian)然,由于(yu)(yu)其功能的(de)(de)特殊性,價格也明顯(xian)貴(gui)很多。比較適(shi)用于(yu)(yu)計算機、交通(tong)(tong)、銀行、證(zheng)券、通(tong)(tong)信、醫療(liao)、工業控(kong)制(zhi)等電(dian)源要求嚴格的(de)(de)行業。
在線互動式UPS:這是(shi)(shi)一種(zhong)智能化的(de)(de)(de)UPS,是(shi)(shi)指在市電(dian)(dian)正常輸入時(shi),UPS的(de)(de)(de)逆變(bian)(bian)(bian)器處于反向(xiang)工(gong)作(即整流工(gong)作狀態),給電(dian)(dian)池組充電(dian)(dian)。在市電(dian)(dian)異(yi)常時(shi)逆變(bian)(bian)(bian)器立刻轉為逆變(bian)(bian)(bian)工(gong)作狀態,將電(dian)(dian)池組電(dian)(dian)能轉換為交流電(dian)(dian)輸出,同后(hou)備式UPS相比,在線互動式UPS的(de)(de)(de)保護功能較強(qiang),逆變(bian)(bian)(bian)器輸出電(dian)(dian)壓波形較好,一般為正弦波。具有(you)較強(qiang)的(de)(de)(de)軟件功能,可以方便地(di)上網進(jin)行UPS的(de)(de)(de)遠(yuan)程(cheng)控制和智能化管(guan)理。
可(ke)(ke)自(zi)動監(jian)測外部輸入(ru)電(dian)(dian)(dian)壓(ya)是(shi)(shi)否(fou)處于(yu)正(zheng)常范(fan)圍(wei)之(zhi)內,如有偏差可(ke)(ke)由(you)穩(wen)(wen)壓(ya)電(dian)(dian)(dian)器升壓(ya)或降壓(ya),提(ti)供比較穩(wen)(wen)定(ding)的(de)正(zheng)弦波輸出電(dian)(dian)(dian)壓(ya)。而且它與計(ji)算機之(zhi)間可(ke)(ke)以通過數據接口(如RS-232串口)進行數據通訊,通過監(jian)控軟件,用戶可(ke)(ke)直接從電(dian)(dian)(dian)腦屏(ping)幕上監(jian)控電(dian)(dian)(dian)源(yuan)及UPS狀(zhuang)況,方便管(guan)理工作(zuo)并(bing)可(ke)(ke)提(ti)高計(ji)算機系統的(de)可(ke)(ke)靠性。這種UPS集中(zhong)了(le)后備式UPS效率高和(he)在線式UPS供電(dian)(dian)(dian)質量(liang)高的(de)優點,但其穩(wen)(wen)頻性不是(shi)(shi)十分理想(xiang),不適合做長延時的(de)UPS電(dian)(dian)(dian)源(yuan)。
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