逆(ni)(ni)變(bian)(bian)器總(zong)成逆(ni)(ni)變(bian)(bian)器作用(yong)就是把直流電變(bian)(bian)換(huan)為交流電,逆(ni)(ni)變(bian)(bian)器主流有2種連接(jie)方式:
1、直接連在汽車電瓶上,功(gong)率(lv)較高,可(ke)以為更多大(da)功(gong)率(lv)用電器使用,缺(que)點是風險比較大(da);
2、通過點煙器(qi)(qi)電(dian)(dian)(dian)源(yuan)轉(zhuan)換,輸(shu)出(chu)功(gong)(gong)(gong)率(lv)比較小,但也足夠大(da)多(duo)數小型電(dian)(dian)(dian)器(qi)(qi)使用(yong)。逆(ni)變器(qi)(qi)是把直流電(dian)(dian)(dian)能(電(dian)(dian)(dian)池、蓄電(dian)(dian)(dian)瓶)轉(zhuan)變成(cheng)交流電(dian)(dian)(dian)(一般為(wei)(wei)220V,50Hz正弦波(bo)),其(qi)由逆(ni)變橋、控制(zhi)邏輯(ji)和濾波(bo)電(dian)(dian)(dian)路組成(cheng)。逆(ni)變器(qi)(qi)在工作(zuo)時其(qi)本身也要消耗一部分(fen)電(dian)(dian)(dian)力,因此輸(shu)入(ru)功(gong)(gong)(gong)率(lv)要大(da)于其(qi)輸(shu)出(chu)功(gong)(gong)(gong)率(lv)。逆(ni)變器(qi)(qi)的效率(lv)即(ji)是逆(ni)變器(qi)(qi)輸(shu)出(chu)功(gong)(gong)(gong)率(lv)與輸(shu)入(ru)功(gong)(gong)(gong)率(lv)之比,即(ji)逆(ni)變器(qi)(qi)效率(lv)為(wei)(wei)輸(shu)出(chu)功(gong)(gong)(gong)率(lv)比上輸(shu)入(ru)功(gong)(gong)(gong)率(lv)。
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