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)(ke)以分為兩部分,當(dang)諧波比(bi)較小(xiao)時(shi)的(de)時(shi)候,可(ke)(ke)以通過濾波電(dian)(dian)抗器(qi)(qi)進行抑制,但是當(dang)諧波比(bi)較大(da)的(de)情況下,可(ke)(ke)以選擇采(cai)取串聯(lian)形式放大(da)諧波電(dian)(dian)流,從(cong)而達到保護(hu)電(dian)(dian)機設施的(de)目的(de),將電(dian)(dian)容器(qi)(qi)的(de)損壞程度降(jiang)到最低。
二、濾波電抗器有什么作用
濾波(bo)電(dian)(dian)(dian)抗(kang)器是用(yong)來限制電(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)壓突變和操作過電(dian)(dian)(dian)壓引起(qi)的(de)電(dian)(dian)(dian)流(liu)沖(chong)擊(ji),平滑電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓中包(bao)含(han)的(de)尖峰脈沖(chong),或平滑橋式(shi)整(zheng)流(liu)電(dian)(dian)(dian)路(lu)換相時(shi)產生(sheng)的(de)電(dian)(dian)(dian)壓缺陷(xian),有效地保護變頻器和改善功率因數,它既能(neng)阻止來自(zi)電(dian)(dian)(dian)網(wang)的(de)干擾,又(you)能(neng)減少整(zheng)流(liu)單元(yuan)產生(sheng)的(de)諧波(bo)電(dian)(dian)(dian)流(liu)對電(dian)(dian)(dian)網(wang)的(de)污染。
1、輸出電抗器的作用:
輸出(chu)電(dian)抗(kang)器(qi)(qi)主(zhu)要(yao)作用是補(bu)償長線(50-200m)分布電(dian)容的(de)影響(xiang),并能抑制輸出(chu)諧(xie)(xie)波(bo)(bo)電(dian)流,提高輸出(chu)高頻阻抗(kang),有效抑制dv/dt.減低(di)高頻漏電(dian)流,起到保護變頻器(qi)(qi),減小設備噪聲的(de)作用。電(dian)容器(qi)(qi)在(zai)補(bu)償功率的(de)時候,往往會受(shou)到諧(xie)(xie)波(bo)(bo)電(dian)壓和諧(xie)(xie)波(bo)(bo)電(dian)流的(de)沖擊(ji),造(zao)成電(dian)容器(qi)(qi)損(sun)壞(huai)和功率因數降低(di),為此,需要(yao)在(zai)補(bu)償的(de)時候進行(xing)諧(xie)(xie)波(bo)(bo)治理(li)。
2、直流電抗器的作用:
直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)抗器(qi)接(jie)在變(bian)頻系統的直流(liu)(liu)(liu)(liu)整流(liu)(liu)(liu)(liu)環(huan)節與逆(ni)變(bian)環(huan)節之間,主(zhu)要用(yong)途是將疊(die)加在直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)上的交流(liu)(liu)(liu)(liu)分量限定(ding)在某(mou)一規定(ding)值(zhi),保持整流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)連續(xu),減小電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)脈沖值(zhi),使逆(ni)變(bian)環(huan)節運行更(geng)穩定(ding)及改善變(bian)頻器(qi)的功(gong)率因數。