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重慶電機維修重慶直流電機維修
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重慶電機維修影響直流電機額定電流因素。

文章出處:maituwangluo.com  |  發布時間:2022/3/29 11:31:06  |  瀏覽次數:184

重慶(qing)電(dian)(dian)機維修影響直流(liu)電(dian)(dian)機額定電(dian)(dian)流(liu)因素。


一般用戶(hu)對直(zhi)流(liu)(liu)無(wu)刷(shua)電(dian)(dian)(dian)(dian)機的(de)(de)額(e)定電(dian)(dian)(dian)(dian)流(liu)(liu)有要求,涉及用戶(hu)選擇(ze)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)源的(de)(de)功率和放電(dian)(dian)(dian)(dian)功率(安全時間)。電(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)流(liu)(liu)越小,電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)時間越長,特別是在電(dian)(dian)(dian)(dian)動(dong)自行(xing)車電(dian)(dian)(dian)(dian)機中(zhong),用戶(hu)希望(wang)電(dian)(dian)(dian)(dian)機續行(xing)公里(li)長,電(dian)(dian)(dian)(dian)機額(e)定電(dian)(dian)(dian)(dian)流(liu)(liu)相對較小,電(dian)(dian)(dian)(dian)機額(e)定電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)確(que)定非常精致。因(yin)此,影響直(zhi)流(liu)(liu)無(wu)刷(shua)電(dian)(dian)(dian)(dian)機額(e)定電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)因(yin)素如下。

 

重慶電機維修

 


(1)確定電機(ji)在額定點的(de)輸入功(gong)率,基(ji)本確定電機(ji)的(de)效率。電機(ji)的(de)額定電壓越高,額定電流越小。


(2)電(dian)機(ji)轉矩常數越(yue)大,電(dian)機(ji)額定電(dian)流越(yue)小。


(3)盡量減少電機的扭矩,即減少電機的空載損失,減少電機的空載電流,相應減少電機的額定電流,但減少不多。
直(zhi)流(liu)無刷電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)額(e)定(ding)電(dian)(dian)(dian)壓增加(jia)(jia)后,電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)空載速(su)度(du)也(ye)會增加(jia)(jia)。如果(guo)(guo)確定(ding)了電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)額(e)定(ding)速(su)度(du),電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)效(xiao)(xiao)率差別(bie)不大,則可以計算出(chu)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)空載速(su)度(du)。如果(guo)(guo)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)額(e)定(ding)電(dian)(dian)(dian)壓增加(jia)(jia),為了保證(zheng)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)額(e)定(ding)速(su)度(du),則意味(wei)著電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)反(fan)電(dian)(dian)(dian)動勢常數應與額(e)定(ding)電(dian)(dian)(dian)壓成正比增加(jia)(jia)。如果(guo)(guo)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)形(xing)狀不變,即電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)工作磁(ci)通量(liang)不變,則必須成正比增加(jia)(jia)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)有效(xiao)(xiao)導體數量(liang)。對于一定(ding)面積(ji)的(de)(de)(de)槽形(xing),這不是問題,電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)樞電(dian)(dian)(dian)阻(zu)也(ye)會相應增加(jia)(jia),電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)內阻(zu)會很大。


然而,電(dian)(dian)(dian)機(ji)的(de)(de)電(dian)(dian)(dian)流也相應(ying)減(jian)小(xiao)。在電(dian)(dian)(dian)機(ji)的(de)(de)銅損(sun)(sun)耗中,電(dian)(dian)(dian)流減(jian)小(xiao)成(cheng)(cheng)平方,電(dian)(dian)(dian)機(ji)的(de)(de)電(dian)(dian)(dian)阻(zu)增加成(cheng)(cheng)正比(bi)。因(yin)(yin)此,電(dian)(dian)(dian)機(ji)的(de)(de)銅損(sun)(sun)耗不會增加,而是會下降。因(yin)(yin)此,同一電(dian)(dian)(dian)機(ji)制造(zao)高(gao)壓(ya)(ya)電(dian)(dian)(dian)機(ji)的(de)(de)效率將高(gao)于制造(zao)低(di)壓(ya)(ya)電(dian)(dian)(dian)機(ji)的(de)(de)效率,主要是因(yin)(yin)為電(dian)(dian)(dian)機(ji)的(de)(de)銅損(sun)(sun)耗較小(xiao)。電(dian)(dian)(dian)力輸送(song)采用(yong)高(gao)壓(ya)(ya)電(dian)(dian)(dian)力輸送(song),以減(jian)少(shao)線路中電(dian)(dian)(dian)流造(zao)成(cheng)(cheng)的(de)(de)損(sun)(sun)耗。高(gao)電(dian)(dian)(dian)壓(ya)(ya)會對(dui)人造(zao)成(cheng)(cheng)傷害(hai)。因(yin)(yin)此,設計人員需要認真考慮(lv)正確選擇直流無刷電(dian)(dian)(dian)機(ji)的(de)(de)電(dian)(dian)(dian)源電(dian)(dian)(dian)壓(ya)(ya)。

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