一、什么是儲能變流器

儲能逆變器就是將交流電變換成直流電向蓄電池充電儲存，當斷電時再將蓄電池儲存的直流電變換成交流電供負載使用。儲(chu)能(neng)逆變器的主要功能(neng)是(shi)實(shi)現交流(liu)電(dian)(dian)網(wang)電(dian)(dian)能(neng)與儲(chu)能(neng)電(dian)(dian)池電(dian)(dian)能(neng)之間的能(neng)量雙(shuang)向傳遞，也(ye)是(shi)一(yi)種雙(shuang)向變流(liu)器，可以適(shi)配(pei)多種直(zhi)流(liu)儲(chu)能(neng)單元，如超級電(dian)(dian)容器組、蓄電(dian)(dian)池組等。

二、什么是UPS

UPS全稱為Uninterrupted Power Supply，即不間斷電源，可在電網斷電或供電不穩定情況下，為通信、醫療、數據中心等對供電質量有特殊性要求的網絡系統提供穩定的電源保障。目前，市場上應用的UPS主要分為以(yi)下幾種：

1、后備(bei)式UPS：市電(dian)(dian)輸(shu)入正(zheng)常(chang)時，UPS將市電(dian)(dian)穩壓后供應給負(fu)載使(shi)用(yong)；當市電(dian)(dian)輸(shu)入超出正(zheng)常(chang)范(fan)圍（如(ru)市電(dian)(dian)中斷或(huo)頻(pin)率(lv)異常(chang)），UPS立即(ji)將蓄電(dian)(dian)池的直流(liu)電(dian)(dian)能轉換成交(jiao)流(liu)電(dian)(dian)能，向負(fu)載逆變供電(dian)(dian)。

2、在線互(hu)動式UPS：市電(dian)(dian)(dian)輸入正常時，由市電(dian)(dian)(dian)為(wei)負(fu)載供電(dian)(dian)(dian)；當市電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)或頻率異(yi)常時，由UPS穩壓(ya)電(dian)(dian)(dian)路穩壓(ya)輸出為(wei)負(fu)載供電(dian)(dian)(dian)；當市電(dian)(dian)(dian)掉電(dian)(dian)(dian)時，則(ze)由蓄電(dian)(dian)(dian)池逆變為(wei)負(fu)載供電(dian)(dian)(dian)。

3、在(zai)線式UPS：市電(dian)(dian)正常(chang)時，市電(dian)(dian)經整(zheng)流(liu)電(dian)(dian)路得到直流(liu)電(dian)(dian)壓(ya)，再逆變輸出為負載供(gong)電(dian)(dian)；市電(dian)(dian)掉電(dian)(dian)情況下，則由蓄電(dian)(dian)池逆變輸出交流(liu)電(dian)(dian)為負載供(gong)電(dian)(dian)。

三、儲能變流器和UPS的區別

UPS和儲能逆變器堪稱“同族兄弟”，都具有儲能(neng)基因，且(qie)都能(neng)為系統(tong)供電(dian)(dian)的(de)可靠(kao)性提(ti)供有力保障。當(dang)然，它們之間也(ye)是有區別(bie)的(de)，而且(qie)其(qi)最大差異就在(zai)應用(yong)端：UPS更多(duo)應用(yong)于數據(ju)存(cun)儲系統(tong)、醫(yi)院供電(dian)(dian)系統(tong)、科研等重要領域，并(bing)以電(dian)(dian)源備份的(de)身(shen)(shen)份充當(dang)守護者；儲能(neng)逆變器則主要在(zai)微電(dian)(dian)網、電(dian)(dian)網調峰填(tian)谷等方面大顯身(shen)(shen)手。

未來，儲能逆變(bian)的重要性(xing)，將在移動能源(yuan)、能源(yuan)互(hu)聯(lian)等(deng)方(fang)面進一(yi)步凸(tu)顯。無(wu)論是UPS還是光伏儲能逆變(bian)器，都將憑借(jie)各(ge)自(zi)特性(xing)在能源(yuan)互(hu)聯(lian)發展中占據一(yi)席之地。