逆(ni)變(bian)器(qi)(qi)總(zong)成逆(ni)變(bian)器(qi)(qi)作用(yong)就是把直流(liu)電變(bian)換(huan)為交流(liu)電,逆(ni)變(bian)器(qi)(qi)主流(liu)有2種連接(jie)方式:
1、直(zhi)接連在汽(qi)車電瓶上,功(gong)率較(jiao)高,可以為更多大功(gong)率用(yong)電器使用(yong),缺點是風險比較(jiao)大;
2、通(tong)過點煙器(qi)(qi)電(dian)(dian)(dian)源轉換(huan),輸(shu)出(chu)功率比較(jiao)小(xiao),但也足夠大多數小(xiao)型電(dian)(dian)(dian)器(qi)(qi)使用。逆(ni)(ni)變(bian)(bian)器(qi)(qi)是把(ba)直流電(dian)(dian)(dian)能(電(dian)(dian)(dian)池、蓄電(dian)(dian)(dian)瓶)轉變(bian)(bian)成(cheng)交流電(dian)(dian)(dian)(一般為(wei)220V,50Hz正(zheng)弦波),其由逆(ni)(ni)變(bian)(bian)橋(qiao)、控制邏輯和濾波電(dian)(dian)(dian)路組成(cheng)。逆(ni)(ni)變(bian)(bian)器(qi)(qi)在工(gong)作時其本身也要消耗(hao)一部(bu)分電(dian)(dian)(dian)力,因(yin)此輸(shu)入(ru)功率要大于其輸(shu)出(chu)功率。逆(ni)(ni)變(bian)(bian)器(qi)(qi)的效率即是逆(ni)(ni)變(bian)(bian)器(qi)(qi)輸(shu)出(chu)功率與輸(shu)入(ru)功率之比,即逆(ni)(ni)變(bian)(bian)器(qi)(qi)效率為(wei)輸(shu)出(chu)功率比上(shang)輸(shu)入(ru)功率。
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