怎么將三相電機改為單相運行，一定要更換電機嗎？今天江蘇空壓機小編就為大家介紹幾種簡便易行的方法，可以不改動電機內部繞組而將三相電機改為單相運行。

一(yi)、加電感(gan)法

同時(shi)無刷電(dian)(dian)機的(de)導出效率為標(biao)稱效率的(de)55%～90%。C1為電(dian)(dian)腦(nao)運(yun)行(xing)濾(lv)波(bo)電(dian)(dian)阻(zu)(zu)，C2為啟動(dong)服務器(qi)(qi)濾(lv)波(bo)電(dian)(dian)阻(zu)(zu)，都需選(xuan)擇能量濾(lv)波(bo)電(dian)(dian)阻(zu)(zu)器(qi)(qi)，其抗(kang)壓值要不達(da)不到450V。C1、C2的(de)存儲(chu)空間可按住式記算：

C1=1950I/U×cosθ

C2=(1～4)C1

式中C的標(biao)準(zhun)為(uF)、I為直流(liu)同(tong)步電機(ji)額定值(zhi)工作(zuo)電流(liu)(A)、U為直流(liu)同(tong)步電機(ji)額定值(zhi)端電壓(V)、cosθ為工作(zuo)效(xiao)率條件，通(tong)常取0.5～0.7。

格外地，針對電機功率(lv)為(wei)1KW下類的(de)(de)三相四線異步直(zhi)流電動(dong)四輪四輪機，需要只用C2，但C1均值要適(shi)宜大(da)。可按(an)C1=13I估計挑選(xuan)，式中(zhong)C1的(de)(de)部(bu)門為(wei)(uF)，I為(wei)原直(zhi)流電動(dong)四輪四輪機的(de)(de)電機額定功率(lv)電壓電流(A)。電容器(qi)的(de)(de)儲存量選(xuan)用比較(jiao)適(shi)合，不可能直(zhi)流電動(dong)四輪四輪機不可健(jian)康程序運行(xing)和溫度升高(gao)過高(gao)。

關(guan)于僅有一(yi)千(qian)瓦的(de)小(xiao)(xiao)工作(zuo)電(dian)(dian)(dian)(dian)壓(ya)三相直(zhi)流無刷電(dian)(dian)(dian)(dian)機(ji)異(yi)步電(dian)(dian)(dian)(dian)動(dong)伸縮機(ji)，電(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)感(gan)器(qi)(qi)電(dian)(dian)(dian)(dian)存(cun)儲空(kong)間(jian)可按C=0.06P(Y接(jie)時)和C=0.1P(△接(jie)時)查找，式中C的(de)政府(fu)部門為(uF)，P為直(zhi)流無刷電(dian)(dian)(dian)(dian)機(ji)工作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(W)。C1、C2電(dian)(dian)(dian)(dian)存(cun)儲空(kong)間(jian)能否一(yi)致，如發動(dong)機(ji)帶(dai)速(su)太(tai)快，要就越(yue)大(da)負擔(dan)(dan)或變小(xiao)(xiao)電(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)感(gan)器(qi)(qi)電(dian)(dian)(dian)(dian)存(cun)儲空(kong)間(jian)，如發動(dong)機(ji)帶(dai)速(su)真慢，可變小(xiao)(xiao)負擔(dan)(dan)或就越(yue)大(da)電(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)感(gan)器(qi)(qi)電(dian)(dian)(dian)(dian)存(cun)儲空(kong)間(jian)。

二、提高工作效率的加濾波(bo)電容法

只為升高智能機的讀取(qu)最大(da)功率(lv)，C1的摘(zhai)取(qu)同“方(fang)式(shi)方(fang)法一”中的C1，C2、C3、R按下面公式(shi)式(shi)摘(zhai)取(qu)：

C2=(2～4)C1

C3=2C1

R=0.25U/I

三、供電系統阻(zu)法

功率(lv)電(dian)阻(zu)功率(lv)R的(de)配(pei)選(xuan)(xuan)要妥(tuo)當。R值(zhi)待(dai)選(xuan)(xuan)為(wei)兩相繞(rao)阻(zu)的(de)功率(lv)電(dian)阻(zu)功率(lv)值(zhi)的(de)5～10倍。

四、電解(jie)電容、電感(gan)移相法

進(jin)行一頭電(dian)(dian)(dian)感(gan)(應留意電(dian)(dian)(dian)感(gan)L的(de)載流工作能力)和一瓶電(dian)(dian)(dian)感(gan)從兩相(xiang)(xiang)電(dian)(dian)(dian)開關電(dian)(dian)(dian)源(yuan)得到三相(xiang)(xiang)變頻器(qi)軸對(dui)稱額定電(dian)(dian)(dian)壓，鍵后圖的(de)策略布線，這些(xie)策略轉(zhuan)變性更強，但要(yao)配備(bei)鐵芯(xin)電(dian)(dian)(dian)感(gan)，也會用兩相(xiang)(xiang)電(dian)(dian)(dian)自耦調壓器(qi)來替(ti)換。我們對(dui)明顯的(de)電(dian)(dian)(dian)動三輪機(ji)宜進(jin)行此法。譬如，當電(dian)(dian)(dian)機(ji)馬(ma)達(da)為(wei)2.2KW進(jin)行“△接”時，電(dian)(dian)(dian)感(gan)C選254uF，電(dian)(dian)(dian)感(gan)L摘(zhai)(zhai)取(qu)78mH。電(dian)(dian)(dian)感(gan)C，電(dian)(dian)(dian)感(gan)L可鍵后式摘(zhai)(zhai)取(qu)：

C=(Ssin(60+φ)×10^6)/(1.5WU^2)

L=(1.5U^2)/(WSsin(60-φ))

式中(zhong)C的(de)做工(gong)作電(dian)阻出(chu)水量(liang)為(uF);L：電(dian)感量(liang)(H);S：直流電(dian)動伸縮(suo)機輸(shu)出(chu)輸(shu)出(chu)輸(shu)出(chu)輸(shu)出(chu)(VA);φ：直流電(dian)動伸縮(suo)機輸(shu)出(chu)輸(shu)出(chu)載荷時的(de)輸(shu)出(chu)輸(shu)出(chu)質數角(度);W：角工(gong)作頻率(lv)(W=2πF=314)

五、加開關按(an)鈕法

裝起動觸(chu)點開關K，便是可(ke)以聯網兩(liang)相電運(yun)作(zuo)。

六、手機有(you)效控制法(fa)

對(dui)輸(shu)出為2～3KW的三(san)相(xiang)電(dian)(dian)(dian)(dian)異步(bu)直(zhi)流電(dian)(dian)(dian)(dian)動(dong)伸(shen)縮(suo)機，移(yi)相(xiang)濾波電(dian)(dian)(dian)(dian)容(rong)（電(dian)(dian)(dian)(dian)容(rong)器(qi)）的使(shi)用(yong)量需到(dao)200～300 uF或(huo)更好，主要是因(yin)為擊穿電(dian)(dian)(dian)(dian)壓(ya)高，故(gu)質(zhi)量分數(shu)大，價(jia)錢(qian)高。而(er)用(yong)刑法則不(bu)(bu)用(yong)再(zai)(zai)移(yi)相(xiang)濾波電(dian)(dian)(dian)(dian)容(rong)（電(dian)(dian)(dian)(dian)容(rong)器(qi)），經證明(ming)書，當直(zhi)流電(dian)(dian)(dian)(dian)動(dong)伸(shen)縮(suo)機用(yong)“△接”時，轉數(shu)不(bu)(bu)以上1500轉/分，再(zai)(zai)啟動(dong)安裝(zhuang)能(neng)有效果地與之(zhi)互相(xiang)配合工作的。

注(zhu)：比喻單相(xiang)異步直流電動三(san)輪機比喻，基本每(mei)kW的額定功(gong)(gong)率的瞬(shun)時直流電壓(ya)約為2A，即2.2kW的單相(xiang)異步直流電動三(san)輪機的額定功(gong)(gong)率的瞬(shun)時直流電壓(ya)約為4.4A。