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實現直流電能和機械能互相轉換的電機

文章出處:maituwangluo.com  |  發布時間:2017/4/6 22:22:39  |  瀏覽次數:643
直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的原(yuan)理(li)   直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)原(yuan)則(ze)上(shang)既可以(yi)作(zuo)(zuo)為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)運(yun)行,也可以(yi)作(zuo)(zuo)為(wei)發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)運(yun)行,這種原(yuan)理(li)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)理(li)論中(zhong)稱為(wei)可逆原(yuan)理(li)。作(zuo)(zuo)為(wei)發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)運(yun)行時,當原(yuan)動(dong)機(ji)(ji)(ji)(ji)驅動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞繞組(zu)在主(zhu)磁極N、S之(zhi)間旋(xuan)轉時,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞繞組(zu)上(shang)感生(sheng)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢,經電(dian)(dian)(dian)(dian)(dian)(dian)(dian)刷、換向器裝置整流為(wei)直(zhi)流后,引(yin)向外(wai)部(bu)(bu)負載(zai)(或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網(wang)),對外(wai)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。而如果(guo)用(yong)外(wai)部(bu)(bu)直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源,經電(dian)(dian)(dian)(dian)(dian)(dian)(dian)刷換向器裝置將直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流引(yin)向電(dian)(dian)(dian)(dian)(dian)(dian)(dian)樞繞組(zu),則(ze)此電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流與(yu)主(zhu)磁極N.S.產生(sheng)的磁場互相作(zuo)(zuo)用(yong),產生(sheng)轉矩,驅動(dong)轉子與(yu)連接(jie)于(yu)其上(shang)的機(ji)(ji)(ji)(ji)械負載(zai)工作(zuo)(zuo),此時電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)作(zuo)(zuo)直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)運(yun)行。直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的額(e)定值

額定功率:指直流電(dian)機在名牌規定下運行時的輸(shu)出功率

額(e)定電(dian)壓:指額(e)定狀態下(xia)直流電(dian)機輸(shu)出線性的電(dian)壓

額定電(dian)流(liu):指直流(liu)電(dian)機在額定電(dian)壓和額定功(gong)率時的電(dian)流(liu)值

額(e)定(ding)轉速(su):指額(e)定(ding)狀態下運行時轉子(zi)的轉速(su)

額定激勵電(dian)流(liu):指直流(liu)電(dian)機在額定狀(zhuang)態(tai)時的勵磁電(dian)流(liu)值
直流(liu)電機的分類

按類型(xing)主(zhu)要(yao)分(fen)為直流有刷電機和直流無刷電機

重(zhong)慶直流(liu)電(dian)機維修按結(jie)果主要分(fen)為(wei)直流(liu)電(dian)動機和直流(liu)發電(dian)機

直(zhi)流(liu)(liu)電(dian)機(ji)的(de)勵磁(ci)方式是(shi)指對(dui)勵磁(ci)繞組(zu)如何供電(dian)、產(chan)生勵磁(ci)磁(ci)通勢(shi)而建立主(zhu)磁(ci)場的(de)問題。根據勵磁(ci)方式的(de)不同,直(zhi)流(liu)(liu)電(dian)機(ji)可分(fen)為(wei):他(ta)勵直(zhi)流(liu)(liu)電(dian)機(ji)、并勵直(zhi)流(liu)(liu)電(dian)機(ji)、串勵直(zhi)流(liu)(liu)電(dian)機(ji)、復勵直(zhi)流(liu)(liu)電(dian)機(ji)。
直流電(dian)機的(de)應用

在實(shi)際應用中,比如蓄(xu)電(dian)(dian)池充電(dian)(dian)、電(dian)(dian)鍍(du)和電(dian)(dian)解實(shi)驗、直(zhi)流(liu)電(dian)(dian)焊以(yi)及數控車床等(deng)的使用,都(dou)能用到直(zhi)流(liu)電(dian)(dian)機。

直流(liu)電(dian)機(ji)結構(gou)復(fu)雜,價格昂(ang)貴(gui),工作(zuo)可靠性相對較差。隨(sui)著電(dian)子工業(ye)(ye)的(de)迅速發展,它已被半導體以及集成(cheng)整流(liu)電(dian)路替(ti)代。但(dan)由于受工作(zuo)環境和使用條件的(de)限制,直流(liu)電(dian)機(ji)在(zai)特定領域(yu)依然前景廣闊。對于從事(shi)機(ji)械、機(ji)電(dian)和電(dian)子加工與(yu)應用的(de)專(zhuan)業(ye)(ye)人(ren)員來(lai)說(shuo),掌握直流(liu)電(dian)機(ji)的(de)使用技術要(yao)點(dian),具有重要(yao)的(de)意義。
怎么(me)運用(yong)直(zhi)流(liu)(liu)電(dian)(dian)機(ji)?那里有賣(mai)直(zhi)流(liu)(liu)電(dian)(dian)機(ji)?直(zhi)流(liu)(liu)電(dian)(dian)機(ji)貴不貴?

直流(liu)電(dian)(dian)機(ji)(ji)是能實現直流(liu)電(dian)(dian)能和機(ji)(ji)械能互(hu)相轉(zhuan)換(huan)(huan)的電(dian)(dian)機(ji)(ji)。當(dang)它作(zuo)電(dian)(dian)動(dong)機(ji)(ji)運行時是直流(liu)電(dian)(dian)動(dong)機(ji)(ji),將電(dian)(dian)能轉(zhuan)換(huan)(huan)為(wei)機(ji)(ji)械能;作(zuo)發電(dian)(dian)機(ji)(ji)運行時是直流(liu)發電(dian)(dian)機(ji)(ji),將機(ji)(ji)械能轉(zhuan)換(huan)(huan)為(wei)電(dian)(dian)能。

實現直(zhi)流(liu)(liu)電(dian)(dian)能(neng)(neng)和機(ji)械能(neng)(neng)互相(xiang)轉換(huan)(huan)的電(dian)(dian)機(ji)。當它作電(dian)(dian)動機(ji)運行時是(shi)直(zhi)流(liu)(liu)電(dian)(dian)動機(ji),將電(dian)(dian)能(neng)(neng)轉換(huan)(huan)為機(ji)械能(neng)(neng);作發(fa)電(dian)(dian)機(ji)運行時是(shi)直(zhi)流(liu)(liu)發(fa)電(dian)(dian)機(ji),將機(ji)械能(neng)(neng)轉換(huan)(huan)為電(dian)(dian)能(neng)(neng)。

當原(yuan)動(dong)機(ji)(ji)驅動(dong)電(dian)(dian)(dian)(dian)樞繞(rao)組(zu)在(zai)主磁(ci)(ci)極(ji)N、S之(zhi)間旋轉(zhuan)(zhuan)時,電(dian)(dian)(dian)(dian)樞繞(rao)組(zu)上(shang)感生出電(dian)(dian)(dian)(dian)動(dong)勢,經電(dian)(dian)(dian)(dian)刷(shua)、換向器(qi)裝(zhuang)置整流(liu)為(wei)直(zhi)(zhi)(zhi)流(liu)后,引(yin)向外部負載(或(huo)電(dian)(dian)(dian)(dian)網),對外供電(dian)(dian)(dian)(dian),此時電(dian)(dian)(dian)(dian)機(ji)(ji)作(zuo)(zuo)直(zhi)(zhi)(zhi)流(liu)發(fa)電(dian)(dian)(dian)(dian)機(ji)(ji)運(yun)行。如用外部直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)源,經電(dian)(dian)(dian)(dian)刷(shua)換軍用直(zhi)(zhi)(zhi)升機(ji)(ji)向器(qi)裝(zhuang)置將直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)流(liu)引(yin)向電(dian)(dian)(dian)(dian)樞繞(rao)組(zu),則此電(dian)(dian)(dian)(dian)流(liu)與主磁(ci)(ci)極(ji)N.S.產(chan)生的磁(ci)(ci)場(chang)互相作(zuo)(zuo)用,產(chan)生轉(zhuan)(zhuan)矩,驅動(dong)轉(zhuan)(zhuan)子與連接于其上(shang)的機(ji)(ji)械負載工作(zuo)(zuo),此時電(dian)(dian)(dian)(dian)機(ji)(ji)作(zuo)(zuo)直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)運(yun)行。

直流(liu)電(dian)機(ji)由定(ding)(ding)子(zi)(zi)和轉子(zi)(zi)兩部(bu)分(fen)組(zu)成,其(qi)間有(you)一定(ding)(ding)的(de)氣隙。其(qi)構造的(de)主要(yao)特點(dian)是具有(you)一個(ge)帶(dai)換(huan)向器的(de)電(dian)樞。直流(liu)電(dian)機(ji)的(de)定(ding)(ding)子(zi)(zi)由機(ji)座、主磁(ci)極、換(huan)向磁(ci)極、前后端蓋和刷架等部(bu)件組(zu)成。

 其中(zhong)主磁(ci)極是產(chan)生直流(liu)(liu)電機(ji)氣隙(xi)磁(ci)場的(de)主要部(bu)件,由永磁(ci)體或帶(dai)有直流(liu)(liu)勵磁(ci)繞組的(de)疊片鐵(tie)心(xin)構成。直流(liu)(liu)電機(ji)的(de)轉子則由電樞、換向器(又稱整流(liu)(liu)子)和轉軸等部(bu)件構成。
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