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  • 意大利杰弗倫GEFRAN伺服變頻器

    意大(da)利(li)杰弗(fu)倫GEFRAN伺服變頻器 變頻器節能主要表現在(zai)風(feng)(feng)機、水泵的(de)(de)(de)應用(yong)上(shang)。為了(le)保證生產(chan)的(de)(de)(de)可靠(kao)性,各種生產(chan)機械在(zai)設(she)計配用(yong)動(dong)力(li)驅動(dong)時(shi),都留有一定的(de)(de)(de)富余(yu)量(liang)。當電(dian)機不能在(zai)滿負荷(he)下運行(xing)時(shi),除達到動(dong)力(li)驅動(dong)要求外(wai),多余(yu)的(de)(de)(de)力(li)矩(ju)增加了(le)有功功率的(de)(de)(de)消耗,造成(cheng)電(dian)能的(de)(de)(de)浪費。風(feng)(feng)機、泵類等設(she)備傳統的(de)(de)(de)調(diao)速方法是通過調(diao)節入口(kou)或出口(kou)的(de)(de)(de)擋板、閥(fa)門開度來調(diao)節給(gei)風(feng)(feng)量(liang)和(he)給(gei)水量(liang),其輸入功率大(da),且大(da)量(liang)的(de)(de)(de)能源消耗在(zai)擋板、閥(fa)門的(de)(de)(de)截流過程中。

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  • 意大利杰弗倫GEFRAN變頻器

    意大利杰(jie)弗倫GEFRAN變(bian)(bian)頻器(qi) 在整(zheng)流(liu)器(qi)整(zheng)流(liu)后的(de)(de)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)壓中(zhong),含有電(dian)(dian)(dian)(dian)(dian)源6倍(bei)頻率(lv)(lv)的(de)(de)脈動(dong)(dong)電(dian)(dian)(dian)(dian)(dian)壓,此外(wai)逆(ni)變(bian)(bian)器(qi)產生(sheng)的(de)(de)脈動(dong)(dong)電(dian)(dian)(dian)(dian)(dian)流(liu)也使直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)壓變(bian)(bian)動(dong)(dong)。為了抑制電(dian)(dian)(dian)(dian)(dian)壓波(bo)動(dong)(dong),采用電(dian)(dian)(dian)(dian)(dian)感(gan)和電(dian)(dian)(dian)(dian)(dian)容(rong)吸收脈動(dong)(dong)電(dian)(dian)(dian)(dian)(dian)壓(電(dian)(dian)(dian)(dian)(dian)流(liu))。裝置(zhi)容(rong)量(liang)小(xiao)時(shi),如果電(dian)(dian)(dian)(dian)(dian)源和主電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)構成(cheng)器(qi)件(jian)有余量(liang),可(ke)以(yi)省(sheng)去電(dian)(dian)(dian)(dian)(dian)感(gan)采用簡(jian)單的(de)(de)平波(bo)回路(lu)(lu)。同整(zheng)流(liu)器(qi)相(xiang)反,逆(ni)變(bian)(bian)器(qi)是將(jiang)直(zhi)流(liu)功(gong)率(lv)(lv)變(bian)(bian)換為所要(yao)求頻率(lv)(lv)的(de)(de)交(jiao)流(liu)功(gong)率(lv)(lv),以(yi)所確(que)定(ding)的(de)(de)時(shi)間使6個開(kai)關器(qi)件(jian)導通、關斷就可(ke)以(yi)得(de)到3相(xiang)交(jiao)流(liu)輸(shu)出。

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