一拖二(er)中頻電(dian)源性能描述(shu)：

一、主控(kong)制(zhi)系統(tong)全數字化，無(wu)繼(ji)電控(kong)制(zhi)。

控(kong)制(zhi)(zhi)系統采用高可(ke)靠性(xing)的(de)(de)(de)大規(gui)模集(ji)成電(dian)(dian)路控(kong)制(zhi)(zhi)。各種(zhong)信號的(de)(de)(de)運(yun)算處(chu)理及其相(xiang)應動作的(de)(de)(de)執(zhi)行(xing)都按程序自動進行(xing)。用數字控(kong)制(zhi)(zhi)系統代替各種(zhong)繼電(dian)(dian)控(kong)制(zhi)(zhi)回路所要完(wan)成的(de)(de)(de)功能(neng)，整個(ge)中(zhong)頻電(dian)(dian)源設備無一只繼電(dian)(dian)器(qi)，這就(jiu)避免了(le)由于(yu)繼電(dian)(dian)器(qi)接(jie)點不可(ke)靠帶(dai)來的(de)(de)(de)設備故障(zhang)。

（2）、電源恒功率輸出運行(xing)，有效的(de)縮短(duan)熔化時間，提(ti)高設備的(de)效率。

由于系統在工作時，中頻電源的輸(shu)(shu)出電(dian)(dian)壓和功率(lv)(lv)是通過調節(jie)逆變觸發頻率(lv)(lv)來實現的，這樣就可以始終使輸(shu)(shu)出的功率(lv)(lv)處于**狀態，并且通過電(dian)(dian)壓和電(dian)(dian)流閉環作用，使中頻電(dian)(dian)源達到(dao)恒功率(lv)(lv)輸(shu)(shu)出。

（3）、具有優異(yi)的抗沖擊負荷能力。

系統中主(zhu)要元器件(jian)的(de)參(can)數選擇均留出較大裕(yu)量，在硬件(jian)上(shang)保證(zheng)了各元器件(jian)有(you)較好(hao)的(de)抗沖擊能力。在控(kong)制方式上(shang)，整流和(he)逆(ni)變控(kong)制均單(dan)獨設置有(you)電(dian)壓和(he)電(dian)流閉環控(kong)制，在負載沖擊時(shi)能有(you)效的(de)控(kong)制電(dian)壓和(he)電(dian)流的(de)變化率。

（4）、完善可靠的保護功能

本控(kong)(kong)(kong)制(zhi)(zhi)線路(lu)(lu)設有整流過壓(ya)(ya)/過流保(bao)(bao)(bao)護、槽路(lu)(lu)過壓(ya)(ya)/過流保(bao)(bao)(bao)護、缺相(xiang)保(bao)(bao)(bao)護、控(kong)(kong)(kong)制(zhi)(zhi)電源欠電壓(ya)(ya)保(bao)(bao)(bao)護、冷卻水(shui)(shui)壓(ya)(ya)過低等(deng)各(ge)項(xiang)保(bao)(bao)(bao)護措施(shi)。這些保(bao)(bao)(bao)護功(gong)(gong)能的分析(xi)處(chu)理與實現都(dou)在主(zhu)控(kong)(kong)(kong)制(zhi)(zhi)板和(he)逆變控(kong)(kong)(kong)制(zhi)(zhi)板上(shang)完(wan)成，保(bao)(bao)(bao)證了各(ge)項(xiang)保(bao)(bao)(bao)護功(gong)(gong)能的靈敏(min)度及可靠性。控(kong)(kong)(kong)制(zhi)(zhi)系統中(zhong)(zhong)含有相(xiang)序自識別(bie)電路(lu)(lu)，使系統中(zhong)(zhong)無須安(an)裝同步變壓(ya)(ya)器，免(mian)去了調試維(wei)修中(zhong)(zhong)調相(xiang)序、對同步的工(gong)作。每(mei)臺電容器設置有溫(wen)度檢測(ce)探頭，檢測(ce)結(jie)果將傳(chuan)送(song)到處(chu)理器，處(chu)理后的數據送(song)到顯示(shi)器和(he)報(bao)警(jing)電路(lu)(lu)。水(shui)(shui)路(lu)(lu)關鍵點(dian)位置具有水(shui)(shui)壓(ya)(ya)檢測(ce)、水(shui)(shui)溫(wen)檢測(ce)功(gong)(gong)能，多路(lu)(lu)監測(ce)冷卻水(shui)(shui)的水(shui)(shui)壓(ya)(ya)和(he)水(shui)(shui)溫(wen)，實時保(bao)(bao)(bao)護中(zhong)(zhong)頻設備。

（5）、光隔離(li)脈沖輸出

在控(kong)(kong)制(zhi)系(xi)統中，觸(chu)發脈沖從控(kong)(kong)制(zhi)板到(dao)可控(kong)(kong)硅(gui)的(de)控(kong)(kong)制(zhi)極之間具有雙(shuang)重隔(ge)離(li)(li)措施(shi)。在控(kong)(kong)制(zhi)板上采(cai)用(yong)(yong)了(le)(le)2500V以(yi)上耐壓的(de)光(guang)隔(ge)離(li)(li)器(qi)件(jian)(jian)對(dui)觸(chu)發脈沖進行光(guang)電(dian)隔(ge)離(li)(li)，在脈沖變壓器(qi)上采(cai)用(yong)(yong)了(le)(le)3000V以(yi)上耐壓等級(ji)的(de)變壓器(qi)組件(jian)(jian)。即(ji)使可控(kong)(kong)硅(gui)產(chan)生(sheng)過壓，也不會對(dui)控(kong)(kong)制(zhi)系(xi)統產(chan)生(sheng)任(ren)何影(ying)響(xiang)。