逆(ni)變(bian)(bian)器總成(cheng)逆(ni)變(bian)(bian)器作用就(jiu)是(shi)把直流電變(bian)(bian)換為(wei)交流電,逆(ni)變(bian)(bian)器主流有2種(zhong)連(lian)接方式(shi):
1、直接連在(zai)汽車電瓶上,功(gong)率較高,可以為更多大(da)功(gong)率用電器使用,缺(que)點是風險比較大(da);
2、通過點煙器(qi)(qi)電(dian)(dian)(dian)(dian)源轉換,輸出(chu)功(gong)(gong)率比(bi)較小,但也足夠大(da)多數小型電(dian)(dian)(dian)(dian)器(qi)(qi)使用。逆(ni)變(bian)(bian)(bian)器(qi)(qi)是(shi)把直流電(dian)(dian)(dian)(dian)能(電(dian)(dian)(dian)(dian)池、蓄電(dian)(dian)(dian)(dian)瓶)轉變(bian)(bian)(bian)成交流電(dian)(dian)(dian)(dian)(一般(ban)為220V,50Hz正弦波),其由逆(ni)變(bian)(bian)(bian)橋、控制(zhi)邏輯和濾波電(dian)(dian)(dian)(dian)路組(zu)成。逆(ni)變(bian)(bian)(bian)器(qi)(qi)在工(gong)作時其本身也要消耗一部(bu)分電(dian)(dian)(dian)(dian)力,因此輸入(ru)功(gong)(gong)率要大(da)于其輸出(chu)功(gong)(gong)率。逆(ni)變(bian)(bian)(bian)器(qi)(qi)的(de)效率即是(shi)逆(ni)變(bian)(bian)(bian)器(qi)(qi)輸出(chu)功(gong)(gong)率與輸入(ru)功(gong)(gong)率之比(bi),即逆(ni)變(bian)(bian)(bian)器(qi)(qi)效率為輸出(chu)功(gong)(gong)率比(bi)上輸入(ru)功(gong)(gong)率。
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