機車整流裝置用均流電抗器

均(jun)流電抗器|機(ji)車整(zheng)流裝置(zhi)用均流電(dian)抗器

均流電抗器主要用于硅整流裝置中解決并聯整流元件的均流問題。

均流(liu)(liu)電(dian)(dian)抗器是由(you)繞在同一(yi)鐵芯(xin)的兩個(ge)匝(za)數(shu)相同的線(xian)(xian)圈(quan)組成(cheng)（將線(xian)(xian)圈(quan)非同名端相連接）的一(yi)種三端口器件，當兩個(ge)分(fen)支電(dian)(dian)流(liu)(liu)不(bu)同時(shi)，因鐵芯(xin)的磁耦(ou)合作用，使(shi)繞在鐵芯(xin)上的線(xian)(xian)圈(quan)感應(ying)電(dian)(dian)勢，感應(ying)電(dian)(dian)勢的產生(sheng)勢圖使(shi)兩分(fen)支電(dian)(dian)流(liu)(liu)相等，從(cong)而形成(cheng)動態平等。

用(yong)一個(ge)均(jun)(jun)(jun)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)抗器接在(zai)兩(liang)個(ge)并(bing)聯(lian)的元(yuan)件電(dian)(dian)(dian)(dian)(dian)路中(zhong)(zhong)，當(dang)兩(liang)個(ge)線圈內電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)相(xiang)等(deng)時(shi)，鐵(tie)芯(xin)內激磁安匝相(xiang)互抵消。若(ruo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)不等(deng)時(shi)，就(jiu)會產生(sheng)一個(ge)電(dian)(dian)(dian)(dian)(dian)勢，這個(ge)電(dian)(dian)(dian)(dian)(dian)勢恰好使電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)小(xiao)的元(yuan)件支路電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)增(zeng)大(da)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)大(da)的元(yuan)件支路電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)減(jian)小(xiao)，達到均(jun)(jun)(jun)流(liu)(liu)的目的。在(zai)并(bing)聯(lian)元(yuan)件較多的情(qing)況(kuang)下，應采(cai)用(yong)適當(dang)數量的均(jun)(jun)(jun)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)抗器。在(zai)其相(xiang)鄰(lin)支路中(zhong)(zhong)串聯(lian)極性相(xiang)反匝數相(xiang)等(deng)的線圈，當(dang)發(fa)生(sheng)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)不均(jun)(jun)(jun)時(shi)，產生(sheng)感(gan)應電(dian)(dian)(dian)(dian)(dian)勢，使支路間保(bao)持均(jun)(jun)(jun)流(liu)(liu)。采(cai)用(yong)均(jun)(jun)(jun)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)抗器均(jun)(jun)(jun)流(liu)(liu)的優點是損耗小(xiao)，并(bing)且(qie)電(dian)(dian)(dian)(dian)(dian)感(gan)還有限制(zhi)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)上升率的作(zuo)用(yong)，能起到動態均(jun)(jun)(jun)流(liu)(liu)的效果(guo)。