一、濾波電抗器工作原理是什么
濾波電抗器的(de)工作原理可以(yi)(yi)分為兩部分,當諧(xie)(xie)波比較小時的(de)時候,可以(yi)(yi)通過濾波電(dian)抗器(qi)進行抑制,但是當諧(xie)(xie)波比較大的(de)情況(kuang)下,可以(yi)(yi)選(xuan)擇采(cai)取串聯(lian)形式放大諧(xie)(xie)波電(dian)流(liu),從(cong)而達到保護電(dian)機(ji)設施(shi)的(de)目的(de),將電(dian)容器(qi)的(de)損壞程度降到最(zui)低。
二、濾波電抗器有什么作用
濾(lv)波(bo)電(dian)(dian)(dian)(dian)抗器是用來(lai)限制電(dian)(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)(dian)壓(ya)(ya)突變(bian)(bian)和操(cao)作過電(dian)(dian)(dian)(dian)壓(ya)(ya)引起的電(dian)(dian)(dian)(dian)流(liu)(liu)沖擊,平(ping)(ping)滑電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓(ya)(ya)中包含的尖峰脈(mo)沖,或平(ping)(ping)滑橋式整流(liu)(liu)電(dian)(dian)(dian)(dian)路換相時產生的電(dian)(dian)(dian)(dian)壓(ya)(ya)缺陷,有效(xiao)地(di)保護變(bian)(bian)頻器和改善(shan)功(gong)率(lv)因數,它既能阻止來(lai)自電(dian)(dian)(dian)(dian)網(wang)的干擾,又能減少(shao)整流(liu)(liu)單元產生的諧波(bo)電(dian)(dian)(dian)(dian)流(liu)(liu)對電(dian)(dian)(dian)(dian)網(wang)的污染。
1、輸出電抗器的作用:
輸出電(dian)抗器(qi)(qi)(qi)主要(yao)作用(yong)是補償(chang)長線(xian)(50-200m)分(fen)布電(dian)容(rong)(rong)的影響,并能抑(yi)制輸出諧波電(dian)流(liu),提高輸出高頻阻抗,有效抑(yi)制dv/dt.減低(di)高頻漏(lou)電(dian)流(liu),起(qi)到保(bao)護變頻器(qi)(qi)(qi),減小設備噪(zao)聲的作用(yong)。電(dian)容(rong)(rong)器(qi)(qi)(qi)在補償(chang)功率的時(shi)候(hou),往(wang)往(wang)會受到諧波電(dian)壓和(he)(he)諧波電(dian)流(liu)的沖擊,造(zao)成電(dian)容(rong)(rong)器(qi)(qi)(qi)損(sun)壞和(he)(he)功率因數降低(di),為(wei)此,需要(yao)在補償(chang)的時(shi)候(hou)進(jin)行諧波治理。
2、直流電抗器的作用:
直流(liu)電(dian)抗器(qi)接在(zai)(zai)變(bian)頻(pin)(pin)系統的(de)直流(liu)整(zheng)流(liu)環節與(yu)逆變(bian)環節之間,主要用途是將疊加在(zai)(zai)直流(liu)電(dian)流(liu)上的(de)交流(liu)分量限定(ding)在(zai)(zai)某一(yi)規定(ding)值(zhi),保(bao)持整(zheng)流(liu)電(dian)流(liu)連續(xu),減小電(dian)流(liu)脈沖值(zhi),使逆變(bian)環節運行更穩(wen)定(ding)及改善變(bian)頻(pin)(pin)器(qi)的(de)功(gong)率因數。