逆變器(qi)(qi)總(zong)成逆變器(qi)(qi)作用就是把直流(liu)電變換為(wei)交(jiao)流(liu)電,逆變器(qi)(qi)主流(liu)有2種連接方式:
1、直接連在汽車電瓶上,功率較(jiao)高,可以為更(geng)多大功率用電器使用,缺(que)點(dian)是風險(xian)比較(jiao)大;
2、通(tong)過(guo)點煙器(qi)電(dian)源轉換,輸(shu)(shu)出(chu)(chu)(chu)功(gong)(gong)率(lv)比較小,但也(ye)足(zu)夠大(da)多數小型電(dian)器(qi)使用。逆(ni)變(bian)(bian)器(qi)是把(ba)直流電(dian)能(電(dian)池(chi)、蓄(xu)電(dian)瓶(ping))轉變(bian)(bian)成(cheng)交(jiao)流電(dian)(一般為(wei)220V,50Hz正弦波),其(qi)(qi)(qi)由逆(ni)變(bian)(bian)橋、控(kong)制邏(luo)輯和濾(lv)波電(dian)路(lu)組(zu)成(cheng)。逆(ni)變(bian)(bian)器(qi)在工作時(shi)其(qi)(qi)(qi)本身(shen)也(ye)要消耗一部分(fen)電(dian)力,因(yin)此輸(shu)(shu)入(ru)功(gong)(gong)率(lv)要大(da)于其(qi)(qi)(qi)輸(shu)(shu)出(chu)(chu)(chu)功(gong)(gong)率(lv)。逆(ni)變(bian)(bian)器(qi)的效率(lv)即(ji)是逆(ni)變(bian)(bian)器(qi)輸(shu)(shu)出(chu)(chu)(chu)功(gong)(gong)率(lv)與輸(shu)(shu)入(ru)功(gong)(gong)率(lv)之(zhi)比,即(ji)逆(ni)變(bian)(bian)器(qi)效率(lv)為(wei)輸(shu)(shu)出(chu)(chu)(chu)功(gong)(gong)率(lv)比上輸(shu)(shu)入(ru)功(gong)(gong)率(lv)。
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