三菱變頻器工作原理
三菱變頻器是利用電力半導體器件的通斷作用將工頻電源變換為另一頻率的電能控制裝置,三菱變頻器是世界知名的變頻器之一,由三菱電機株式會社生產,在世界各地占有率比較高.三菱變頻器代理商淺談一下其工作原理:
1、主回路(lu):電(dian)抗(kang)器(qi)(qi)(qi)(qi)(qi)的(de)作(zuo)用是(shi)防(fang)止三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)產生的(de)高次(ci)諧波(bo)通過(guo)電(dian)源的(de)輸入回路(lu)返回到(dao)電(dian)網從而(er)影響其他的(de)受電(dian)設備,需要根據(ju)三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)容(rong)量(liang)大小(xiao)來決定是(shi)否需要加電(dian)抗(kang)器(qi)(qi)(qi)(qi)(qi);濾(lv)波(bo)器(qi)(qi)(qi)(qi)(qi)是(shi)安裝在三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)輸出端,減少三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)輸出的(de)高次(ci)諧波(bo),當三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)到(dao)電(dian)機的(de)距離較遠時(shi),應(ying)該安裝濾(lv)波(bo)器(qi)(qi)(qi)(qi)(qi)。雖(sui)然三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)本身有各(ge)種保(bao)護(hu)(hu)功能(neng),但缺(que)相(xiang)保(bao)護(hu)(hu)卻并不完美(mei),斷路(lu)器(qi)(qi)(qi)(qi)(qi)在主回路(lu)中起(qi)到(dao)過(guo)載,缺(que)相(xiang)等保(bao)護(hu)(hu),選型(xing)時(shi)可(ke)(ke)按照三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)容(rong)量(liang)進行選擇。可(ke)(ke)以用三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)本身的(de)過(guo)載保(bao)護(hu)(hu)代替熱繼(ji)電(dian)器(qi)(qi)(qi)(qi)(qi)。
2、控制回路:具有工頻變(bian)頻的手動(dong)切換,以便在變(bian)頻出(chu)現故(gu)障時可(ke)以手動(dong)切工頻運行(xing),因(yin)輸出(chu)端不(bu)能加電(dian)壓(ya),固工頻和變(bian)頻要有互鎖(suo)。
1、主回路(lu):電(dian)抗(kang)器(qi)(qi)(qi)(qi)(qi)的(de)作(zuo)用是(shi)防(fang)止三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)產生的(de)高次(ci)諧波(bo)通過(guo)電(dian)源的(de)輸入回路(lu)返回到(dao)電(dian)網從而(er)影響其他的(de)受電(dian)設備,需要根據(ju)三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)容(rong)量(liang)大小(xiao)來決定是(shi)否需要加電(dian)抗(kang)器(qi)(qi)(qi)(qi)(qi);濾(lv)波(bo)器(qi)(qi)(qi)(qi)(qi)是(shi)安裝在三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)輸出端,減少三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)輸出的(de)高次(ci)諧波(bo),當三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)到(dao)電(dian)機的(de)距離較遠時(shi),應(ying)該安裝濾(lv)波(bo)器(qi)(qi)(qi)(qi)(qi)。雖(sui)然三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)本身有各(ge)種保(bao)護(hu)(hu)功能(neng),但缺(que)相(xiang)保(bao)護(hu)(hu)卻并不完美(mei),斷路(lu)器(qi)(qi)(qi)(qi)(qi)在主回路(lu)中起(qi)到(dao)過(guo)載,缺(que)相(xiang)等保(bao)護(hu)(hu),選型(xing)時(shi)可(ke)(ke)按照三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)的(de)容(rong)量(liang)進行選擇。可(ke)(ke)以用三菱(ling)變(bian)(bian)(bian)頻(pin)器(qi)(qi)(qi)(qi)(qi)本身的(de)過(guo)載保(bao)護(hu)(hu)代替熱繼(ji)電(dian)器(qi)(qi)(qi)(qi)(qi)。
2、控制回路:具有工頻變(bian)頻的手動(dong)切換,以便在變(bian)頻出(chu)現故(gu)障時可(ke)以手動(dong)切工頻運行(xing),因(yin)輸出(chu)端不(bu)能加電(dian)壓(ya),固工頻和變(bian)頻要有互鎖(suo)。
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