USP不間斷電源是什么
它可以保(bao)障計算(suan)機(ji)系統在停電(dian)(dian)(dian)(dian)之(zhi)后繼續工作一段時間以使用(yong)戶(hu)能夠緊(jin)急存盤,使您不致因停電(dian)(dian)(dian)(dian)而(er)影響(xiang)工作或丟失(shi)數據。它在計算(suan)機(ji)系統和網絡(luo)應用(yong)中(zhong),主要(yao)起到(dao)兩(liang)個作用(yong):一是應急使用(yong),防止突(tu)然斷電(dian)(dian)(dian)(dian)而(er)影響(xiang)正(zheng)常工作,給計算(suan)機(ji)造成損害;二是消除市電(dian)(dian)(dian)(dian)上的(de)電(dian)(dian)(dian)(dian)涌、瞬(shun)間高電(dian)(dian)(dian)(dian)壓(ya)、瞬(shun)間低電(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)線噪聲和頻率偏移等(deng)“電(dian)(dian)(dian)(dian)源污染”,改善電(dian)(dian)(dian)(dian)源質量,為計算(suan)機(ji)系統提(ti)供高質量的(de)電(dian)(dian)(dian)(dian)源。
USP不間斷電源工作原理
從基本應用原理上講,UPS是一種含有儲(chu)能裝(zhuang)置,以逆(ni)變器為主(zhu)(zhu)要元件,穩(wen)(wen)壓穩(wen)(wen)頻(pin)輸出(chu)的(de)電源保護設(she)備。主(zhu)(zhu)要由整流器、蓄電池、逆(ni)變器和(he)靜(jing)態開關(guan)等幾部分組成。
1)整流器:整流器是一個整流裝置,簡單的說就是將交流(AC)轉化為直流(DC)的裝置(zhi)。它有兩個主(zhu)要功能:第(di)一,將交流(liu)電(AC)變(bian)成直流(liu)電(DC),經(jing)濾波后供(gong)給負(fu)載(zai),或者供(gong)給逆變器;第二,給蓄電池提供(gong)充(chong)電電壓。因此(ci),它(ta)同時(shi)又起到一個充(chong)電器的作用;
2)蓄電池:蓄電池是UPS用(yong)來作為儲(chu)存電能的裝(zhuang)置,它(ta)由若干個(ge)電池串聯(lian)而成,其容量(liang)大(da)小決(jue)定了其維持放電(dian)(dian)(供電(dian)(dian))的時(shi)(shi)間。其主(zhu)要功能(neng)是:1當市(shi)電(dian)(dian)正常(chang)時(shi)(shi),將(jiang)電(dian)(dian)能(neng)轉換成化學能(neng)儲(chu)存在電(dian)(dian)池內部。2當市(shi)電(dian)(dian)故障時(shi)(shi),將(jiang)化學能(neng)轉換成電(dian)(dian)能(neng)提(ti)供給逆(ni)變器或負載;
3)逆變器:通俗的講,逆變器是一種將直流電(DC)轉化為交流電(AC)的裝置。它由逆變橋、控(kong)制邏輯(ji)和(he)濾波(bo)電路組成;
4)靜態開關:靜態開關又稱靜止開關,它是一種無觸點開關,是用兩個可控硅(SCR)反向(xiang)并聯組成的(de)一種交流開(kai)關,其閉合和斷開(kai)由邏輯控(kong)制(zhi)器控(kong)制(zhi)。分為轉換型和并機(ji)型兩種。轉換型開(kai)關(guan)主要用(yong)(yong)于兩路電源供電的系統,其作(zuo)用(yong)(yong)是實現從一(yi)路到另一(yi)路的自動(dong)切換;并機型開關主(zhu)要用于(yu)并聯逆變器與市電或多臺逆變器。
選購(gou)UPS不(bu)(bu)間斷電源時千萬不(bu)(bu)要(yao)因為價(jia)格便宜,而盲目跟從購(gou)買,選擇比較有(you)(you)知名度(du)的品(pin)牌,不(bu)(bu)僅品(pin)質有(you)(you)保證(zheng),售后(hou)服務也(ye)有(you)(you)保障。當然(ran)追(zhui)求品(pin)牌的東西不(bu)(bu)一(yi)定就是追(zhui)求價(jia)格的昂貴,不(bu)(bu)同的經濟水平(ping)我們可以選擇不(bu)(bu)同價(jia)位的名牌產品(pin)。選擇網購(gou)商品(pin)的朋友要(yao)認(ren)準品(pin)牌的旗艦店(dian)鋪,這樣子(zi)才能做(zuo)到萬無一(yi)失。