廠商性質：經銷商

所在地：上海市

更新時間：2024-06-12

產品簡介：

西門子逆變器6SE70報（F010 F011 F012），西門子變頻器維修，西門子交流變頻調速器維修當天內修復解決；

逆變器的維修工作與原理

逆變器的概述：

主(zhu)電(dian)(dian)(dian)路(lu)(lu)是(shi)(shi)給異(yi)步電(dian)(dian)(dian)動機提(ti)供調壓(ya)調頻(pin)電(dian)(dian)(dian)源(yuan)的(de)(de)電(dian)(dian)(dian)力變(bian)(bian)換部(bu)分(fen)，變(bian)(bian)頻(pin)器(qi)(qi)的(de)(de)主(zhu)電(dian)(dian)(dian)路(lu)(lu)大(da)體(ti)上可分(fen)為(wei)(wei)兩(liang)類 ：電(dian)(dian)(dian)壓(ya)型(xing)是(shi)(shi)將電(dian)(dian)(dian)壓(ya)源(yuan)的(de)(de)直(zhi)流(liu)(liu)(liu)變(bian)(bian)換為(wei)(wei)交流(liu)(liu)(liu)的(de)(de)變(bian)(bian)頻(pin)器(qi)(qi)，直(zhi)流(liu)(liu)(liu)回(hui)路(lu)(lu)的(de)(de)濾(lv)波(bo)(bo)是(shi)(shi)電(dian)(dian)(dian)容(rong)。電(dian)(dian)(dian)流(liu)(liu)(liu)型(xing)是(shi)(shi)將電(dian)(dian)(dian)流(liu)(liu)(liu)源(yuan)的(de)(de)直(zhi)流(liu)(liu)(liu)變(bian)(bian)換為(wei)(wei)交流(liu)(liu)(liu)的(de)(de)變(bian)(bian)頻(pin)器(qi)(qi)，其直(zhi)流(liu)(liu)(liu)回(hui)路(lu)(lu)濾(lv)波(bo)(bo)是(shi)(shi)電(dian)(dian)(dian)感。它由(you)三部(bu)分(fen)構成，將工頻(pin)電(dian)(dian)(dian)源(yuan)變(bian)(bian)換為(wei)(wei)直(zhi)流(liu)(liu)(liu)功(gong)率(lv)的(de)(de)“整(zheng)流(liu)(liu)(liu)器(qi)(qi)"，吸收(shou)在變(bian)(bian)流(liu)(liu)(liu)器(qi)(qi)和逆變(bian)(bian)器(qi)(qi)產(chan)生的(de)(de)電(dian)(dian)(dian)壓(ya)脈動的(de)(de)“平波(bo)(bo)回(hui)路(lu)(lu)"，以(yi)及將直(zhi)流(liu)(liu)(liu)功(gong)率(lv)變(bian)(bian)換為(wei)(wei)交流(liu)(liu)(liu)功(gong)率(lv)的(de)(de)“逆變(bian)(bian)器(qi)(qi)“。

逆變(bian)器(qi)的整流器：

大量(liang)使(shi)用的(de)是二極管的(de)變流器，它把(ba)工頻(pin)電(dian)源變換為(wei)直流電(dian)源。也可用兩組晶(jing)體管變流器構(gou)成(cheng)可逆變流器，由于其功率方向可逆，可以進行再生運轉。

逆變器(qi)的平波回路：

在整流(liu)(liu)器整流(liu)(liu)后的(de)直流(liu)(liu)電(dian)壓(ya)中(zhong)，含有電(dian)源6倍頻(pin)率的(de)脈(mo)動(dong)(dong)(dong)電(dian)壓(ya)，此(ci)外(wai)逆(ni)變(bian)器產生的(de)脈(mo)動(dong)(dong)(dong)電(dian)流(liu)(liu)也使直流(liu)(liu)電(dian)壓(ya)變(bian)動(dong)(dong)(dong)。為了抑制電(dian)壓(ya)波動(dong)(dong)(dong)，采(cai)用(yong)電(dian)感和電(dian)容吸收(shou)脈(mo)動(dong)(dong)(dong)電(dian)壓(ya)（電(dian)流(liu)(liu)）。裝置(zhi)容量小時，如果電(dian)源和主電(dian)路構成(cheng)器件有余量，可以省去電(dian)感采(cai)用(yong)簡單(dan)的(de)平波回(hui)路。

變(bian)(bian)頻器的逆變(bian)(bian)器：

同整流(liu)器(qi)(qi)相(xiang)反，逆(ni)變器(qi)(qi)是將直流(liu)功率(lv)變換為(wei)所(suo)(suo)要求頻率(lv)的(de)(de)交流(liu)功率(lv)，以(yi)(yi)(yi)所(suo)(suo)確定的(de)(de)時間(jian)使6個開關(guan)器(qi)(qi)件導(dao)通(tong)、關(guan)斷便可以(yi)(yi)(yi)得到3相(xiang)交流(liu)輸(shu)出。以(yi)(yi)(yi)電壓(ya)型pwm逆(ni)變器(qi)(qi)為(wei)例示出開關(guan)時間(jian)和電壓(ya)波(bo)形(xing)。

控制(zhi)電(dian)(dian)(dian)路是給異步電(dian)(dian)(dian)動機供電(dian)(dian)(dian)（電(dian)(dian)(dian)壓、頻(pin)率可調）的(de)(de)主(zhu)電(dian)(dian)(dian)路提供控制(zhi)信號的(de)(de)回(hui)路，它(ta)有頻(pin)率、電(dian)(dian)(dian)壓的(de)(de)“運(yun)算(suan)電(dian)(dian)(dian)路"，主(zhu)電(dian)(dian)(dian)路的(de)(de)“電(dian)(dian)(dian)壓、電(dian)(dian)(dian)流(liu)檢測電(dian)(dian)(dian)路"，電(dian)(dian)(dian)動機的(de)(de)“速度檢測電(dian)(dian)(dian)路"，將運(yun)算(suan)電(dian)(dian)(dian)路的(de)(de)控制(zhi)信號進行放大(da)的(de)(de)“驅動電(dian)(dian)(dian)路"，以及逆變(bian)器(qi)和(he)電(dian)(dian)(dian)動機的(de)(de)“保(bao)護電(dian)(dian)(dian)路"組成。

（1）運(yun)算電(dian)路(lu)(lu)：將外部的(de)速(su)度、轉矩等指(zhi)令同檢測電(dian)路(lu)(lu)的(de)電(dian)流、電(dian)壓信號(hao)進行比較運(yun)算，決定逆(ni)變器的(de)輸出(chu)電(dian)壓、頻率(lv)。 

（2）電(dian)壓、電(dian)流檢測電(dian)路(lu)：與主回路(lu)電(dian)位隔離檢測電(dian)壓、電(dian)流等。

（3）驅動電(dian)路(lu)：驅動主(zhu)電(dian)路(lu)器件(jian)的電(dian)路(lu)。它與控制(zhi)電(dian)路(lu)隔離使主(zhu)電(dian)路(lu)器件(jian)導通(tong)、關斷。

（4）速度(du)(du)檢測電路:以(yi)裝在異步電動機(ji)軸機(ji)上(shang)的速度(du)(du)檢測器(tg、plg等)的信(xin)號為(wei)速度(du)(du)信(xin)號，送(song)入運(yun)算回(hui)路，根(gen)據(ju)指(zhi)令(ling)和運(yun)算可使電動機(ji)按指(zhi)令(ling)速度(du)(du)運(yun)轉。 

（5）保護(hu)電(dian)路：檢測主(zhu)電(dian)路的電(dian)壓、電(dian)流等，當發生過(guo)載或過(guo)電(dian)壓等異(yi)常時(shi)，為了防止逆變器和異(yi)步電(dian)動機損壞(huai)。 

西門子逆變器6SE70報（F010 F011 F012）當天內修復解決；

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