相(xiang)(xiang)繞組只(zhi)有勵(li)磁(ci)(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流If感(gan)生出的(de)(de)空(kong)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)E0（三(san)相(xiang)(xiang)對稱），其大小隨If的(de)(de)增大而增加。但(dan)是(shi)(shi)(shi)(shi)(shi)，由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機磁(ci)(ci)(ci)(ci)(ci)(ci)路(lu)鐵心有飽和現象，所以兩者不(bu)成正(zheng)(zheng)比。反(fan)(fan)映(ying)空(kong)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)E0與勵(li)磁(ci)(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流If關系的(de)(de)曲線(xian)稱為同步發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)空(kong)載(zai)(zai)(zai)特性。 3、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)： 當(dang)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機接上對稱負(fu)載(zai)(zai)(zai)后，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞繞組中的(de)(de)三(san)相(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流會(hui)產生另一(yi)個旋轉(zhuan)(zhuan)磁(ci)(ci)(ci)(ci)(ci)(ci)場，稱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)磁(ci)(ci)(ci)(ci)(ci)(ci)場。其轉(zhuan)(zhuan)速正(zheng)(zheng)好與轉(zhuan)(zhuan)子(zi)的(de)(de)轉(zhuan)(zhuan)速相(xiang)(xiang)等，兩者同步旋轉(zhuan)(zhuan)。 同步發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)磁(ci)(ci)(ci)(ci)(ci)(ci)場與轉(zhuan)(zhuan)子(zi)勵(li)磁(ci)(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)場均可近似(si)地認為都按正(zheng)(zheng)弦規律分布。它們(men)之間(jian)(jian)的(de)(de)空(kong)間(jian)(jian)相(xiang)(xiang)位(wei)差取決于(yu)空(kong)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)E0與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流I之間(jian)(jian)的(de)(de)時(shi)間(jian)(jian)相(xiang)(xiang)位(wei)差。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)磁(ci)(ci)(ci)(ci)(ci)(ci)場還與負(fu)載(zai)(zai)(zai)情況(kuang)有關。 當(dang)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)負(fu)載(zai)(zai)(zai)為電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)性時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)磁(ci)(ci)(ci)(ci)(ci)(ci)場起(qi)去磁(ci)(ci)(ci)(ci)(ci)(ci)作(zuo)用(yong)(yong)，會(hui)導致(zhi)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓降低；當(dang)負(fu)載(zai)(zai)(zai)呈(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容性時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞反(fan)(fan)應(ying)(ying)(ying)磁(ci)(ci)(ci)(ci)(ci)(ci)場起(qi)助磁(ci)(ci)(ci)(ci)(ci)(ci)作(zuo)用(yong)(yong)，會(hui)使發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓升高。發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機開機運行查(cha)(cha)驗(yan)相(xiang)(xiang)關流程(cheng) 1、查(cha)(cha)驗(yan)發(fa)(fa)動(dong)機水箱水位(wei)線(xian)是(shi)(shi)(shi)(shi)(shi)不(bu)是(shi)(shi)(shi)(shi)(shi)正(zheng)(zheng)常值； 2、查(cha)(cha)驗(yan)發(fa)(fa)動(dong)機機油是(shi)(shi)(shi)(shi)(shi)不(bu)是(shi)(shi)(shi)(shi)(shi)在要求的(de)(de)油面位(wei)置(zhi)； 3、查(cha)(cha)驗(yan)柴(chai)油箱是(shi)(shi)(shi)(shi)(shi)不(bu)是(shi)(shi)(shi)(shi)(shi)有充裕柴(chai)油，供油閥門

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