逆(ni)變器(qi)(qi)總成逆(ni)變器(qi)(qi)作用(yong)就(jiu)是把直流(liu)電(dian)(dian)變換(huan)為(wei)交流(liu)電(dian)(dian),逆(ni)變器(qi)(qi)主(zhu)流(liu)有2種連(lian)接方式:
1、直接連(lian)在汽車電(dian)瓶(ping)上,功率較(jiao)高(gao),可以(yi)為(wei)更多大(da)功率用電(dian)器使用,缺點是風險比較(jiao)大(da);
2、通過點(dian)煙器(qi)電(dian)(dian)源轉(zhuan)換(huan),輸(shu)(shu)出(chu)(chu)功(gong)(gong)率(lv)(lv)比較小(xiao),但(dan)也足(zu)夠大(da)(da)多數小(xiao)型(xing)電(dian)(dian)器(qi)使用。逆(ni)變(bian)(bian)器(qi)是把(ba)直流電(dian)(dian)能(電(dian)(dian)池、蓄電(dian)(dian)瓶)轉(zhuan)變(bian)(bian)成(cheng)交流電(dian)(dian)(一般為220V,50Hz正(zheng)弦波(bo)),其(qi)(qi)由逆(ni)變(bian)(bian)橋、控制邏輯和(he)濾波(bo)電(dian)(dian)路組成(cheng)。逆(ni)變(bian)(bian)器(qi)在工(gong)作時其(qi)(qi)本身也要消耗(hao)一部分電(dian)(dian)力,因(yin)此輸(shu)(shu)入功(gong)(gong)率(lv)(lv)要大(da)(da)于其(qi)(qi)輸(shu)(shu)出(chu)(chu)功(gong)(gong)率(lv)(lv)。逆(ni)變(bian)(bian)器(qi)的效(xiao)率(lv)(lv)即(ji)(ji)是逆(ni)變(bian)(bian)器(qi)輸(shu)(shu)出(chu)(chu)功(gong)(gong)率(lv)(lv)與輸(shu)(shu)入功(gong)(gong)率(lv)(lv)之比,即(ji)(ji)逆(ni)變(bian)(bian)器(qi)效(xiao)率(lv)(lv)為輸(shu)(shu)出(chu)(chu)功(gong)(gong)率(lv)(lv)比上輸(shu)(shu)入功(gong)(gong)率(lv)(lv)。
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