EPS應急電源中的電感主要(yao)起到儲能和(he)濾波的作用。
當EPS工(gong)作時(shi)，電源(yuan)將電能儲存在電容器中，同時(shi)也將電流通入電感中。
由于扁線電(dian)感(gan)的(de)特性，電(dian)流在電(dian)感(gan)中會形(xing)成磁場，當(dang)電(dian)源突然斷電(dian)或故障時，磁場會向電(dian)容(rong)器放(fang)電(dian)，將電(dian)能供應給負載，起到了應急(ji)備用電(dian)源的(de)作(zuo)用。
另外(wai)，電感(gan)還可以在EPS中起到濾波(bo)作用，將電源輸出的波(bo)形進行(xing)平(ping)滑處理，去除干擾信號，保證負載的安全運(yun)行(xing)。
在大功率的應急電源(yuan)中，電感(gan)的選擇和設計尤為重要，它不僅(jin)關系到(dao)應急電源(yuan)的效果，還關系到(dao)設備的使用壽命和安全(quan)性。
EPS應(ying)急電源中的(de)電感(gan)(gan)一般采用(yong)鐵芯(xin)電感(gan)(gan)，其工(gong)作原理(li)與基(ji)本電感(gan)(gan)相同，都是基(ji)于阻礙電流變化的(de)原理(li)，利用(yong)電磁感(gan)(gan)應(ying)的(de)作用(yong)來實現儲能(neng)、濾(lv)波和(he)隔(ge)離等功能(neng)。
具體來說(shuo)，鐵芯(xin)電感由(you)線(xian)圈和磁(ci)(ci)(ci)(ci)芯(xin)組(zu)成，線(xian)圈是繞在(zai)磁(ci)(ci)(ci)(ci)芯(xin)上的(de)導線(xian)，當電流通入(ru)線(xian)圈時，線(xian)圈產生磁(ci)(ci)(ci)(ci)場，磁(ci)(ci)(ci)(ci)場會在(zai)磁(ci)(ci)(ci)(ci)芯(xin)內(nei)部形成閉合(he)的(de)磁(ci)(ci)(ci)(ci)通路，由(you)于(yu)磁(ci)(ci)(ci)(ci)芯(xin)材料的(de)高(gao)導磁(ci)(ci)(ci)(ci)性(xing)，可以極大(da)程度地增強磁(ci)(ci)(ci)(ci)場的(de)效果。
在(zai)(zai)EPS工作時(shi)，電(dian)(dian)(dian)(dian)源將(jiang)電(dian)(dian)(dian)(dian)能(neng)儲存在(zai)(zai)電(dian)(dian)(dian)(dian)容器中(zhong)(zhong)，電(dian)(dian)(dian)(dian)流同時(shi)也(ye)流過電(dian)(dian)(dian)(dian)感(gan)，這時(shi)線(xian)圈(quan)中(zhong)(zhong)的(de)(de)磁場(chang)(chang)隨著電(dian)(dian)(dian)(dian)流的(de)(de)變(bian)(bian)化(hua)(hua)而變(bian)(bian)化(hua)(hua)，在(zai)(zai)變(bian)(bian)化(hua)(hua)方向(xiang)上產(chan)生電(dian)(dian)(dian)(dian)動勢(shi)，將(jiang)一部(bu)分(fen)電(dian)(dian)(dian)(dian)能(neng)轉(zhuan)化(hua)(hua)為磁能(neng)儲存在(zai)(zai)電(dian)(dian)(dian)(dian)感(gan)中(zhong)(zhong)，當電(dian)(dian)(dian)(dian)源突然斷(duan)電(dian)(dian)(dian)(dian)或故(gu)障時(shi)，線(xian)圈(quan)中(zhong)(zhong)的(de)(de)磁場(chang)(chang)會(hui)快速消(xiao)失，消(xiao)失的(de)(de)磁場(chang)(chang)會(hui)產(chan)生一個(ge)反向(xiang)電(dian)(dian)(dian)(dian)動勢(shi)，這時(shi)電(dian)(dian)(dian)(dian)感(gan)中(zhong)(zhong)的(de)(de)磁能(neng)就被轉(zhuan)化(hua)(hua)為電(dian)(dian)(dian)(dian)能(neng)，向(xiang)負載輸出儲備(bei)的(de)(de)電(dian)(dian)(dian)(dian)能(neng)，供應緊急使用。
此外，電(dian)(dian)(dian)感還(huan)可以起到濾波的(de)作(zuo)用，當EPS電(dian)(dian)(dian)源輸出的(de)直(zhi)流電(dian)(dian)(dian)信(xin)號(hao)中含有較(jiao)(jiao)多的(de)交流干(gan)擾信(xin)號(hao)時，可以通(tong)過電(dian)(dian)(dian)感的(de)電(dian)(dian)(dian)抗作(zuo)用，削弱和過濾掉(diao)頻率(lv)較(jiao)(jiao)高的(de)雜波信(xin)號(hao)，輸出更加(jia)純凈的(de)直(zhi)流電(dian)(dian)(dian)，避免對負載產生影響。
