發電機是怎么發電的
發電(dian)(dian)機(ji)(ji)是指將其他(ta)形式的能(neng)(neng)源轉換成電(dian)(dian)能(neng)(neng)的機(ji)(ji)械設備(bei),它由水(shui)輪機(ji)(ji)、汽輪機(ji)(ji)、柴(chai)油機(ji)(ji)或其他(ta)動(dong)(dong)力機(ji)(ji)械驅動(dong)(dong),將水(shui)流,氣流,燃料燃燒或原子核裂變(bian)產生的能(neng)(neng)量(liang)轉化(hua)為機(ji)(ji)械能(neng)(neng)傳給發電(dian)(dian)機(ji)(ji),再由發電(dian)(dian)機(ji)(ji)轉換為電(dian)(dian)能(neng)(neng)。
發(fa)電(dian)機的(de)形式很多,但其工(gong)作原理都基(ji)于(yu)電(dian)磁感(gan)應定(ding)律和(he)電(dian)磁力定(ding)律。因此,其構造的(de)一(yi)般原則是:用適當(dang)的(de)導磁和(he)導電(dian)材料(liao)構成互(hu)相進行電(dian)磁感(gan)應的(de)磁路和(he)電(dian)路,以產生電(dian)磁功率,達到(dao)能量轉換(huan)的(de)目(mu)的(de)。
發電機不發電是什么原因
發電機不發電有(you)這(zhe)些原因:發(fa)電(dian)(dian)(dian)機(ji)(ji)過熱;發(fa)電(dian)(dian)(dian)機(ji)(ji)中性線對地有異常電(dian)(dian)(dian)壓;發(fa)電(dian)(dian)(dian)機(ji)(ji)電(dian)(dian)(dian)流過大;發(fa)電(dian)(dian)(dian)機(ji)(ji)端(duan)電(dian)(dian)(dian)壓過高;功(gong)率不(bu)足;定子繞組絕緣擊穿、短路;定子鐵芯(xin)松(song)馳;鐵芯(xin)片間短路;發(fa)電(dian)(dian)(dian)機(ji)(ji)失去(qu)剩磁(ci),起(qi)動(dong)(dong)時不(bu)能發(fa)電(dian)(dian)(dian);自動(dong)(dong)勵磁(ci)裝置的勵磁(ci)電(dian)(dian)(dian)抗(kang)器溫度(du)過高;發(fa)電(dian)(dian)(dian)機(ji)(ji)起(qi)動(dong)(dong)后,電(dian)(dian)(dian)壓升不(bu)起(qi)來。
發電機不發電檢查方法
萬用表(biao)電(dian)壓檔(dang)檢測;外接(jie)電(dian)流表(biao)檢測;試燈(汽(qi)車燈泡)法;改變發動機轉速觀察大燈亮度法;拆下蓄電(dian)池(chi)搭鐵看發動機是否工作法。
什么樣的發電機比較好
一臺合格的發電機應該具備生產許可證、產品合格證、商標注冊證。其中產品合格證應該包括整個機組的合格證、內燃機合格證和發電機合格證。其次,機器噪音要低,一般好的品牌發電機,噪音都比較小。