一、濾波電抗器工作原理是什么
濾波電抗器的(de)工作原理可(ke)以(yi)分為兩(liang)部(bu)分,當諧(xie)波(bo)比較小時的(de)時候,可(ke)以(yi)通(tong)過濾(lv)波(bo)電抗器進行抑(yi)制(zhi),但(dan)是(shi)當諧(xie)波(bo)比較大的(de)情況下(xia),可(ke)以(yi)選擇采取串聯形(xing)式放大諧(xie)波(bo)電流,從而達到保護(hu)電機設施的(de)目的(de),將電容器的(de)損壞(huai)程度降到最低。
二、濾波電抗器有什么作用
濾(lv)波電(dian)(dian)抗器(qi)是用來限制電(dian)(dian)網(wang)電(dian)(dian)壓(ya)突變(bian)和操作(zuo)過電(dian)(dian)壓(ya)引起(qi)的電(dian)(dian)流(liu)(liu)沖(chong)擊(ji),平(ping)(ping)滑電(dian)(dian)源電(dian)(dian)壓(ya)中包含的尖(jian)峰脈沖(chong),或平(ping)(ping)滑橋式整流(liu)(liu)電(dian)(dian)路換相時(shi)產生(sheng)的電(dian)(dian)壓(ya)缺陷,有效地保護(hu)變(bian)頻器(qi)和改善(shan)功率因數,它既能阻止來自電(dian)(dian)網(wang)的干擾(rao),又能減少整流(liu)(liu)單元產生(sheng)的諧波電(dian)(dian)流(liu)(liu)對電(dian)(dian)網(wang)的污(wu)染。
1、輸出電抗器的作用:
輸(shu)出電(dian)(dian)(dian)(dian)抗器(qi)主要(yao)作用是補償長(chang)線(50-200m)分布電(dian)(dian)(dian)(dian)容(rong)的(de)影(ying)響,并能抑(yi)制(zhi)輸(shu)出諧(xie)波(bo)電(dian)(dian)(dian)(dian)流,提(ti)高輸(shu)出高頻阻抗,有(you)效抑(yi)制(zhi)dv/dt.減低高頻漏電(dian)(dian)(dian)(dian)流,起到保護(hu)變頻器(qi),減小設備(bei)噪聲的(de)作用。電(dian)(dian)(dian)(dian)容(rong)器(qi)在(zai)補償功率(lv)(lv)的(de)時候(hou),往往會受到諧(xie)波(bo)電(dian)(dian)(dian)(dian)壓和諧(xie)波(bo)電(dian)(dian)(dian)(dian)流的(de)沖擊,造(zao)成電(dian)(dian)(dian)(dian)容(rong)器(qi)損壞和功率(lv)(lv)因數降低,為此(ci),需要(yao)在(zai)補償的(de)時候(hou)進行諧(xie)波(bo)治理。
2、直流電抗器的作用:
直(zhi)流(liu)(liu)電抗器接在(zai)變(bian)頻(pin)系統的(de)直(zhi)流(liu)(liu)整流(liu)(liu)環節與逆變(bian)環節之間,主要用(yong)途是(shi)將(jiang)疊(die)加在(zai)直(zhi)流(liu)(liu)電流(liu)(liu)上的(de)交流(liu)(liu)分量限(xian)定在(zai)某一規定值(zhi),保持整流(liu)(liu)電流(liu)(liu)連續,減小電流(liu)(liu)脈沖值(zhi),使逆變(bian)環節運(yun)行更(geng)穩(wen)定及改善變(bian)頻(pin)器的(de)功率因數(shu)。