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)(neng)逆(ni)變器的主要功能(neng)(neng)是實現(xian)交流(liu)電(dian)網(wang)電(dian)能(neng)(neng)與(yu)儲(chu)能(neng)(neng)電(dian)池(chi)電(dian)能(neng)(neng)之間(jian)的能(neng)(neng)量雙向(xiang)傳遞，也(ye)是一種雙向(xiang)變流(liu)器，可以適(shi)配多(duo)種直流(liu)儲(chu)能(neng)(neng)單元，如(ru)超級電(dian)容(rong)器組、蓄電(dian)池(chi)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(yao)分(fen)為以下幾(ji)種：

1、后備式UPS：市(shi)電(dian)輸入正常時，UPS將市(shi)電(dian)穩壓后供應給負載使用；當市(shi)電(dian)輸入超(chao)出正常范(fan)圍（如市(shi)電(dian)中(zhong)斷(duan)或頻率(lv)異常），UPS立即將蓄電(dian)池的直流電(dian)能轉換成(cheng)交流電(dian)能，向負載逆變供電(dian)。

2、在線互動式UPS：市電(dian)(dian)輸(shu)(shu)入正常時，由市電(dian)(dian)為負(fu)(fu)載供(gong)(gong)電(dian)(dian)；當(dang)市電(dian)(dian)電(dian)(dian)壓(ya)或頻率異常時，由UPS穩(wen)(wen)壓(ya)電(dian)(dian)路穩(wen)(wen)壓(ya)輸(shu)(shu)出為負(fu)(fu)載供(gong)(gong)電(dian)(dian)；當(dang)市電(dian)(dian)掉電(dian)(dian)時，則由蓄電(dian)(dian)池(chi)逆變為負(fu)(fu)載供(gong)(gong)電(dian)(dian)。

3、在線式UPS：市電(dian)(dian)正常時，市電(dian)(dian)經(jing)整流(liu)電(dian)(dian)路得到直流(liu)電(dian)(dian)壓，再(zai)逆變輸出為負(fu)載供電(dian)(dian)；市電(dian)(dian)掉(diao)電(dian)(dian)情況下(xia)，則由蓄電(dian)(dian)池(chi)逆變輸出交(jiao)流(liu)電(dian)(dian)為負(fu)載供電(dian)(dian)。

三、儲能變流器和UPS的區別

UPS和儲能逆變器堪稱(cheng)“同(tong)族兄弟”，都具(ju)有儲(chu)能(neng)基因(yin)，且都能(neng)為系(xi)(xi)統(tong)供(gong)電(dian)的可(ke)靠性(xing)提供(gong)有力保障。當然，它們之間也(ye)是有區(qu)別的，而且其(qi)最大(da)差異就在(zai)(zai)應(ying)用端：UPS更多應(ying)用于(yu)數據存(cun)儲(chu)系(xi)(xi)統(tong)、醫院供(gong)電(dian)系(xi)(xi)統(tong)、科研(yan)等重要領域，并以電(dian)源備份的身份充當守護者；儲(chu)能(neng)逆變器則主要在(zai)(zai)微電(dian)網、電(dian)網調峰填谷等方面大(da)顯身手。

未來，儲能逆變(bian)的重要(yao)性，將在(zai)移動能源、能源互(hu)(hu)聯(lian)等方面進一(yi)步凸顯。無論是(shi)UPS還是(shi)光(guang)伏儲能逆變(bian)器，都將憑借各自特性在(zai)能源互(hu)(hu)聯(lian)發展中占據一(yi)席之地。