在外行人眼里，激光焊接機是很神奇的設備，它發出小小的一束光竟然蘊藏了這么大的能量。其實這主要在歸功于它的激光電源，這個看似簡單的部件就是激光焊接機能量的來源。下面，通發激光小編簡單分析這其中的秘密。

      激光電源在激光焊接機眾多部件中絕對是一個極其重要的角色，是激光束的“發源地”，如果把它看成激光焊接機的核心部分是一點不為過的。

      激光電源系統包括硬件部門和軟件控制部門。以通發激光升壓調流電源(下圖)為例，硬件方面：主電路包括充電電路、蓄能網絡、放電電路、觸發及預燃電路、操控板。晶閘管SKM500GA

     完成三(san)相(xiang)整流，用(yong)面板上的(de)升壓(ya)(ya)旋鈕調節(jie)氙燈(deng)直流工作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)至 400±5%伏。移相(xiang)模塊(kuai)線路(lu)板除了能產生多路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)源以(yi)外，板上的(de) MC14538 觸(chu)發器控制分頻與(yu)脈寬值(zhi)，其(qi)參數由手(shou)動調節(jie) RC 電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)或者(zhe)程控調整的(de) PLC 方波確(que)定。信號觸(chu)發 NE555 又經選通開(kai)關驅動 IGBT 晶(jing)閘管的(de) B端。IGBT 移相(xiang)控制：起燃電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)須通過短暫(zan)的(de)高(gao)(gao)頻高(gao)(gao)壓(ya)(ya)脈沖擊穿(chuan)燈(deng)內(nei)(nei)氣體形(xing)成火花放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)通道，而后保持氙燈(deng)預(yu)燃狀態(tai)宜用(yong)小電(dian)(dian)(dian)(dian)(dian)(dian)流200mA 和約2KV高(gao)(gao)壓(ya)(ya)。腔內(nei)(nei)氣體經觸(chu)發電(dian)(dian)(dian)(dian)(dian)(dian)離，預(yu)燃電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)維(wei)持激光放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。當放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)IGBT開(kai)關截止(zhi)，燈(deng)管與(yu)蓄能電(dian)(dian)(dian)(dian)(dian)(dian)網隔離，電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容10mF/450V并聯成組充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)；放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)IGBT開(kai)關導(dao)通，蓄能電(dian)(dian)(dian)(dian)(dian)(dian)網才向燈(deng)管放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。

     激光焊接機是非常精密的設備，了解激光電源的奧妙對我們無論是操作還是維護都是有很大幫助的。