東莞發電機出租發電機轉子滅(mie)磁與過電壓保護的分析

東莞發電機出租當(dang)發電(dian)(dian)機(ji)轉子正(zheng)常工作(zuo)時(shi)，由于(yu)晶閘管(guan)(guan)不導通，二極管(guan)(guan)反向(xiang)(xiang)，因此沒(mei)有電(dian)(dian)流通過至(zhi)當(dang)轉子正(zheng)向(xiang)(xiang)過電(dian)(dian)壓(ya)(ya)大于(yu)設(she)定(ding)值時(shi)，觸(chu)發ｓｃｒｖ２，通過ＺｎＯ非線性電(dian)(dian)阻形成過電(dian)(dian)壓(ya)(ya)脈沖通路，限制轉子兩(liang)端(duan)的過電(dian)(dian)壓(ya)(ya)。同時(shi)，從(cong)ＺｎＯ非線性電(dian)(dian)阻的固有特性出(chu)發，干簧電(dian)(dian)流繼電(dian)(dian)器的動(dong)作(zuo)由接(jie)線觸(chu)發，觸(chu)發ｓｃｒｋ３。此時(shi)，過壓(ya)(ya)計數(shu)器動(dong)作(zuo)，過壓(ya)(ya)指示燈點亮。

東莞發(fa)電(dian)(dian)(dian)(dian)機出(chu)租發(fa)電(dian)(dian)(dian)(dian)機轉(zhuan)(zhuan)子(zi)(zi)(zi)滅磁(ci)(ci)及過(guo)電(dian)(dian)(dian)(dian)壓(ya)保(bao)(bao)護當過(guo)電(dian)(dian)(dian)(dian)壓(ya)消失(shi)時(shi)(shi)(shi)，Ｔｒ１自動(dong)(dong)閉合，ＺｎＯ非(fei)線(xian)(xian)性(xing)電(dian)(dian)(dian)(dian)阻呈現高電(dian)(dian)(dian)(dian)阻，不(bu)足(zu)(zu)以維持Ｖ２的(de)(de)維持電(dian)(dian)(dian)(dian)流，ｓｃｒｖ２自動(dong)(dong)關(guan)閉，恢復正(zheng)常工作狀(zhuang)態(tai)。當ｆｍｋ突然斷開時(shi)(shi)(shi)，轉(zhuan)(zhuan)子(zi)(zi)(zi)產(chan)生反向過(guo)電(dian)(dian)(dian)(dian)壓(ya)。反向壓(ya)力通過(guo)二極管Ｖ１和ＺｎＯ非(fei)線(xian)(xian)性(xing)電(dian)(dian)(dian)(dian)阻形成退磁(ci)(ci)通道(dao)，轉(zhuan)(zhuan)子(zi)(zi)(zi)的(de)(de)電(dian)(dian)(dian)(dian)壓(ya)極限由(you)ＺｎＯ非(fei)線(xian)(xian)性(xing)電(dian)(dian)(dian)(dian)阻限制。同時(shi)(shi)(shi)，降(jiang)低了轉(zhuan)(zhuan)子(zi)(zi)(zi)的(de)(de)剩余磁(ci)(ci)能(neng)О　吸(xi)收非(fei)線(xian)(xian)性(xing)電(dian)(dian)(dian)(dian)阻，消除磁(ci)(ci)場，采(cai)用(yong)簧片電(dian)(dian)(dian)(dian)流繼電(dian)(dian)(dian)(dian)器(qi)進(jin)行(xing)繼電(dian)(dian)(dian)(dian)保(bao)(bao)護。設備ＫＡ１將(jiang)移動(dong)(dong)。滅磁(ci)(ci)計(ji)數器(qi)ＰＣ２工作，滅磁(ci)(ci)信(xin)號(hao)燈亮(liang)。２滅磁(ci)(ci)性(xing)能(neng)分析ＺｎＯ非(fei)線(xian)(xian)性(xing)電(dian)(dian)(dian)(dian)阻ＲＦ的(de)(de)滅磁(ci)(ci)能(neng)量應滿足(zu)(zu)勵(li)磁(ci)(ci)系統(tong)發(fa)電(dian)(dian)(dian)(dian)機轉(zhuan)(zhuan)子(zi)(zi)(zi)在惡劣條件下(xia)儲存的(de)(de)能(neng)量Ｑｍａｘ。勵(li)磁(ci)(ci)系統(tong)空載假(jia)強(qiang)勵(li)時(shi)(shi)(shi)，轉(zhuan)(zhuan)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)流為(wei)２２６０ａ即可計(ji)算Ｑｍａｘ。所以，如(ru)果此時(shi)(shi)(shi)滅磁(ci)(ci)開關(guan)關(guan)閉，則(ze)ＲＦ吸(xi)收的(de)(de)能(neng)量為(wei)：則(ze)ＲＦ吸(xi)收的(de)(de)能(neng)量（假(jia)設不(bu)考慮轉(zhuan)(zhuan)子(zi)(zi)(zi)本身消耗的(de)(de)能(neng)量和滅磁(ci)(ci)開關(guan)本身吸(xi)收的(de)(de)能(neng)量）

東莞發電(dian)(dian)(dian)機(ji)出租當發電(dian)(dian)(dian)機(ji)射(she)頻滅(mie)磁(ci)能(neng)量(liang)為１．５ｍｉ時(shi)，射(she)頻滅(mie)磁(ci)能(neng)量(liang)完全可以滿(man)足發電(dian)(dian)(dian)機(ji)在(zai)各種工況下的(de)滅(mie)磁(ci)。ＺｎＯ非(fei)線性電(dian)(dian)(dian)阻轉子(zi)過電(dian)(dian)(dian)壓(ya)(ya)保護的(de)展開曲(qu)線應低于(yu)轉子(zi)勵(li)磁(ci)繞組(zu)的(de)允許耐壓(ya)(ya)水平，并有一(yi)定(ding)裕度，一(yi)般(ban)低于(yu)轉子(zi)繞組(zu)允許絕(jue)緣電(dian)(dian)(dian)壓(ya)(ya)的(de)７０％；同(tong)時(shi)，動作電(dian)(dian)(dian)壓(ya)(ya)應高于(yu)正(zheng)常(chang)勵(li)磁(ci)電(dian)(dian)(dian)壓(ya)(ya)。氧化鋅非(fei)線性電(dian)(dian)(dian)阻的(de)主要功能(neng)是識別和限制瞬(shun)時(shi)過電(dian)(dian)(dian)壓(ya)(ya)，可重復使用而不損壞。電(dian)(dian)(dian)壓(ya)(ya)范(fan)(fan)圍從幾(ji)伏到幾(ji)千伏，電(dian)(dian)(dian)流范(fan)(fan)圍從幾(ji)安培到幾(ji)千安培，能(neng)量(liang)吸收(shou)能(neng)力(li)從幾(ji)焦耳(er)到幾(ji)千焦耳(er)。