稀土永磁電機介紹

稀土永(yong)(yong)磁(ci)(ci)電機(ji)應(ying)用(yong)(yong)越發廣泛，包括艦(jian)艇及潛(qian)艇用(yong)(yong)永(yong)(yong)磁(ci)(ci)電機(ji)、坦克(ke)及裝(zhuang)甲車驅(qu)(qu)動用(yong)(yong)永(yong)(yong)磁(ci)(ci)電機(ji)、船用(yong)(yong)推進器永(yong)(yong)磁(ci)(ci)電機(ji)、航天用(yong)(yong)驅(qu)(qu)動永(yong)(yong)磁(ci)(ci)電機(ji)

可(ke)實現按需調(diao)節(jie)，降低無效能耗

電機低負荷運行時，揚程(cheng)和流量(liang)都(dou)有較大(da)余量(liang)問題，采用變頻調速，可以根據實際的(de)揚程(cheng)和流量(liang)需求(qiu)匹配電機的(de)轉(zhuan)速和運行數(shu)量(liang)，使機組(zu)實時高效運行，降低無(wu)效能耗。

稀土永磁電機優點

由于稀土(tu)(tu)永(yong)(yong)磁(ci)(ci)材料的(de)(de)(de)磁(ci)(ci)性(xing)能優異，它經過(guo)充磁(ci)(ci)后不(bu)再(zai)需要外加能量就能建立很強的(de)(de)(de)*磁(ci)(ci)場，用來替代傳統(tong)電(dian)(dian)(dian)(dian)機(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)勵磁(ci)(ci)場所(suo)制(zhi)成的(de)(de)(de)稀土(tu)(tu)永(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)機(ji)不(bu)僅效(xiao)率(lv)高(gao)，而且結(jie)構簡單、運行(xing)可靠，還(huan)可做到體積小、重量輕。既可達到傳統(tong)電(dian)(dian)(dian)(dian)勵磁(ci)(ci)電(dian)(dian)(dian)(dian)機(ji)所(suo)*的(de)(de)(de)高(gao)性(xing)能（如(ru)特(te)高(gao)效(xiao)、特(te)高(gao)速(su)(su)、特(te)高(gao)響應速(su)(su)度），又可以制(zhi)成能滿足特(te)定(ding)運行(xing)要求的(de)(de)(de)特(te)種電(dian)(dian)(dian)(dian)機(ji)，如(ru)電(dian)(dian)(dian)(dian)梯曳引(yin)電(dian)(dian)(dian)(dian)機(ji)、汽車電(dian)(dian)(dian)(dian)機(ji)等。稀土(tu)(tu)永(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)機(ji)與電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子技(ji)(ji)術(shu)和微機(ji)控制(zhi)技(ji)(ji)術(shu)相結(jie)合，更使電(dian)(dian)(dian)(dian)機(ji)及(ji)傳動(dong)系統(tong)的(de)(de)(de)性(xing)能提高(gao)到一個嶄新的(de)(de)(de)水(shui)平。從(cong)而提高(gao)所(suo)配套的(de)(de)(de)技(ji)(ji)術(shu)裝備(bei)的(de)(de)(de)性(xing)能和水(shui)平，是電(dian)(dian)(dian)(dian)機(ji)行(xing)業調(diao)整產業結(jie)構的(de)(de)(de)重要發展方向。

稀土永(yong)磁(ci)(ci)電(dian)(dian)(dian)機(ji)(ji)的(de)(de)應(ying)用范圍極為廣泛(fan)，幾(ji)乎(hu)遍及(ji)航天、國防、裝(zhuang)備制造、工農業生(sheng)產和日常(chang)生(sheng)活的(de)(de)各(ge)個領(ling)域。它包括永(yong)磁(ci)(ci)同步電(dian)(dian)(dian)動(dong)機(ji)(ji)、永(yong)磁(ci)(ci)發電(dian)(dian)(dian)機(ji)(ji)、直(zhi)流電(dian)(dian)(dian)動(dong)機(ji)(ji)、無(wu)刷直(zhi)流電(dian)(dian)(dian)動(dong)機(ji)(ji)、交(jiao)流永(yong)磁(ci)(ci)伺服電(dian)(dian)(dian)動(dong)機(ji)(ji)、永(yong)磁(ci)(ci)直(zhi)線電(dian)(dian)(dian)機(ji)(ji)、特種永(yong)磁(ci)(ci)電(dian)(dian)(dian)機(ji)(ji)及(ji)相關(guan)的(de)(de)控制系統，幾(ji)乎(hu)覆蓋了(le)整個電(dian)(dian)(dian)機(ji)(ji)行業。

稀土永磁電機特點

1、稀土永磁(ci)同步(bu)電動機無(wu)滑(hua)差，轉子上無(wu)基波(bo)鐵、銅耗(hao)。

2、稀(xi)土永磁同步電動機為雙邊勵磁，且(qie)主(zhu)要是轉(zhuan)子永磁體勵磁，其功率因數可(ke)達到(dao)或接近于1.0。

3、功率因(yin)數(shu)的(de)提高，一(yi)方面(mian)節約了無功功率，另(ling)一(yi)方面(mian)也使定(ding)子(zi)電流下降，定(ding)子(zi)銅(tong)耗減少，效(xiao)率提高。

稀(xi)土(tu)永磁同(tong)步(bu)(bu)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)極弧系(xi)(xi)數一般(ban)均大于異(yi)步(bu)(bu)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)極弧系(xi)(xi)數，當電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓和定子結構一定時，稀(xi)土(tu)永磁同(tong)步(bu)(bu)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)平均磁感應強度(du)較異(yi)步(bu)(bu)機(ji)(ji)小，鐵損耗小。

4、至于稀土永(yong)(yong)磁(ci)同步(bu)電動機的雜散損耗，一般(ban)認為由于其永(yong)(yong)磁(ci)體(ti)磁(ci)場的非正弦性而增(zeng)加(jia)了雜散損耗，但另一方面稀土永(yong)(yong)磁(ci)電動機較大(da)的氣隙(xi)，降(jiang)低了雜散損耗。

5、稀(xi)土(tu)永(yong)磁(ci)(ci)同(tong)(tong)步電(dian)(dian)(dian)動機(ji)(ji)(ji)的(de)(de)不(bu)變損耗(hao)(hao)（鐵耗(hao)(hao)+機(ji)(ji)(ji)械損耗(hao)(hao)）小，可變損耗(hao)(hao)（定子銅耗(hao)(hao)）變化比(bi)異(yi)(yi)步電(dian)(dian)(dian)動機(ji)(ji)(ji)可變損耗(hao)(hao)（定子銅耗(hao)(hao)+轉子銅耗(hao)(hao)）變化慢，使(shi)其效(xiao)率(lv)特性有高(gao)(gao)而平(ping)的(de)(de)特點，使(shi)稀(xi)土(tu)永(yong)磁(ci)(ci)電(dian)(dian)(dian)動機(ji)(ji)(ji)在(zai)(zai)輕(qing)載時的(de)(de)相(xiang)當寬的(de)(de)區(qu)域內效(xiao)率(lv)為最高(gao)(gao)。如在(zai)(zai)油(you)田采油(you)機(ji)(ji)(ji)上使(shi)用(yong)，這(zhe)一(yi)區(qu)域恰好與油(you)田采油(you)機(ji)(ji)(ji)的(de)(de)平(ping)均負載所在(zai)(zai)區(qu)域相(xiang)吻合。為此，稀(xi)土(tu)永(yong)磁(ci)(ci)同(tong)(tong)步電(dian)(dian)(dian)動機(ji)(ji)(ji)的(de)(de)額定效(xiao)率(lv)比(bi)異(yi)(yi)步電(dian)(dian)(dian)動機(ji)(ji)(ji)高(gao)(gao)4%-7%，但在(zai)(zai)整個負載變化范圍內的(de)(de)平(ping)均效(xiao)率(lv)，稀(xi)土(tu)永(yong)磁(ci)(ci)同(tong)(tong)步電(dian)(dian)(dian)動機(ji)(ji)(ji)比(bi)三(san)相(xiang)異(yi)(yi)步電(dian)(dian)(dian)動機(ji)(ji)(ji)可高(gao)(gao)出12%。

6、采用稀土永磁(ci)同步(bu)電動機，無(wu)功(gong)(gong)功(gong)(gong)率節電率可達85%；有(you)功(gong)(gong)功(gong)(gong)率節電率可達23%-25%，節電效果十(shi)分(fen)明(ming)顯。