逆(ni)(ni)變器(qi)總成逆(ni)(ni)變器(qi)作用就是把直流(liu)電變換為交流(liu)電,逆(ni)(ni)變器(qi)主流(liu)有2種(zhong)連接方式:
1、直(zhi)接連在汽車電瓶上(shang),功率較(jiao)(jiao)高,可以為更多大(da)功率用電器使用,缺點(dian)是風險比較(jiao)(jiao)大(da);
2、通過點煙器(qi)(qi)電(dian)(dian)(dian)源轉換,輸(shu)(shu)(shu)(shu)出功(gong)率(lv)比較小,但也(ye)足夠大(da)多數小型電(dian)(dian)(dian)器(qi)(qi)使用。逆變器(qi)(qi)是(shi)把直流電(dian)(dian)(dian)能(電(dian)(dian)(dian)池、蓄(xu)電(dian)(dian)(dian)瓶(ping))轉變成交流電(dian)(dian)(dian)(一(yi)般為(wei)(wei)220V,50Hz正弦(xian)波),其(qi)由逆變橋(qiao)、控制邏輯和(he)濾波電(dian)(dian)(dian)路(lu)組成。逆變器(qi)(qi)在工作時(shi)其(qi)本身(shen)也(ye)要消耗一(yi)部分電(dian)(dian)(dian)力,因此(ci)輸(shu)(shu)(shu)(shu)入功(gong)率(lv)要大(da)于其(qi)輸(shu)(shu)(shu)(shu)出功(gong)率(lv)。逆變器(qi)(qi)的效(xiao)率(lv)即是(shi)逆變器(qi)(qi)輸(shu)(shu)(shu)(shu)出功(gong)率(lv)與輸(shu)(shu)(shu)(shu)入功(gong)率(lv)之比,即逆變器(qi)(qi)效(xiao)率(lv)為(wei)(wei)輸(shu)(shu)(shu)(shu)出功(gong)率(lv)比上輸(shu)(shu)(shu)(shu)入功(gong)率(lv)。
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