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通用變頻器的選用與和什么有關

文(wen)章來源:泰安眾誠自動化設備股份有(you)限公司

發布(bu)日期(qi):2024.10.16

  通用(yong)變(bian)頻器的選用(yong)與負(fu)載(zai)特性和電(dian)機實際工作電(dian)流有關。

  負(fu)(fu)載特(te)(te)(te)(te)性:通(tong)用變(bian)頻(pin)器(qi)的選(xuan)擇首先要(yao)(yao)(yao)基于負(fu)(fu)載特(te)(te)(te)(te)性。對(dui)于不同(tong)的負(fu)(fu)載類型(xing),如(ru)風機(ji)、泵類等平方轉(zhuan)(zhuan)矩(ju)負(fu)(fu)載,以及(ji)恒(heng)轉(zhuan)(zhuan)矩(ju)類負(fu)(fu)載或有較高(gao)靜(jing)態轉(zhuan)(zhuan)速(su)(su)精度(du)要(yao)(yao)(yao)求的機(ji)械,需要(yao)(yao)(yao)選(xuan)擇不同(tong)類型(xing)的通(tong)用變(bian)頻(pin)器(qi)。例如(ru),對(dui)于恒(heng)轉(zhuan)(zhuan)矩(ju)類負(fu)(fu)載或有較高(gao)靜(jing)態轉(zhuan)(zhuan)速(su)(su)精度(du)要(yao)(yao)(yao)求的機(ji)械應選(xuan)用具有轉(zhuan)(zhuan)矩(ju)控制功(gong)(gong)能的高(gao)功(gong)(gong)能型(xing)通(tong)用變(bian)頻(pin)器(qi),這種通(tong)用變(bian)頻(pin)器(qi)低速(su)(su)轉(zhuan)(zhuan)矩(ju)、靜(jing)態機(ji)械特(te)(te)(te)(te)性硬(ying)度(du)大,不怕負(fu)(fu)載沖擊(ji),具有挖土(tu)機(ji)特(te)(te)(te)(te)性。

  電(dian)(dian)(dian)機(ji)(ji)實(shi)(shi)際工(gong)作(zuo)電(dian)(dian)(dian)流(liu)(liu):電(dian)(dian)(dian)機(ji)(ji)實(shi)(shi)際工(gong)作(zuo)電(dian)(dian)(dian)流(liu)(liu)是(shi)變頻(pin)器選(xuan)型最(zui)關鍵的(de)因素。變頻(pin)器在長時間工(gong)作(zuo)時必須滿足變頻(pin)器輸出電(dian)(dian)(dian)流(liu)(liu)大于電(dian)(dian)(dian)機(ji)(ji)實(shi)(shi)際工(gong)作(zuo)電(dian)(dian)(dian)流(liu)(liu)。一般(ban)情況下,變頻(pin)器拖動恒轉(zhuan)矩負載(zai)電(dian)(dian)(dian)機(ji)(ji)時,以(yi)電(dian)(dian)(dian)機(ji)(ji)額(e)定電(dian)(dian)(dian)流(liu)(liu)為(wei)依據選(xuan)擇變頻(pin)器。

  此(ci)外,通用(yong)變頻(pin)器的選(xuan)(xuan)型還需考(kao)(kao)慮其他因素(su),如電(dian)壓匹(pi)(pi)配、電(dian)流匹(pi)(pi)配、轉矩匹(pi)(pi)配、以(yi)及特(te)(te)殊(shu)應用(yong)場(chang)合如高溫、高海拔(ba)等環(huan)境下的特(te)(te)殊(shu)要求,這些都可能影響變頻(pin)器的容(rong)量(liang)選(xuan)(xuan)擇和(he)適用(yong)性。因此(ci),在選(xuan)(xuan)型時,需要綜合考(kao)(kao)慮負(fu)載(zai)特(te)(te)性和(he)電(dian)機實際(ji)工作電(dian)流這兩個關(guan)鍵因素(su),以(yi)確保通用(yong)變頻(pin)器的正確選(xuan)(xuan)擇和(he)有效使用(yong)。