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(cheng)(cheng)三相(xiang)整(zheng)流(liu)，用面板(ban)(ban)上的升壓(ya)旋鈕調節(jie)氙燈(deng)直流(liu)工作電(dian)(dian)(dian)(dian)(dian)壓(ya)至 400±5%伏。移(yi)相(xiang)模塊線路(lu)板(ban)(ban)除了能產生多路(lu)電(dian)(dian)(dian)(dian)(dian)壓(ya)源以外，板(ban)(ban)上的 MC14538 觸發器控制分頻(pin)與脈(mo)寬值，其參數由手(shou)動調節(jie) RC 電(dian)(dian)(dian)(dian)(dian)路(lu)或者程控調整(zheng)的 PLC 方波(bo)確定(ding)。信號(hao)觸發 NE555 又經選通(tong)開關(guan)驅(qu)動 IGBT 晶閘管的 B端。IGBT 移(yi)相(xiang)控制：起(qi)燃(ran)電(dian)(dian)(dian)(dian)(dian)路(lu)須通(tong)過短暫的高頻(pin)高壓(ya)脈(mo)沖擊穿燈(deng)內(nei)氣體(ti)形(xing)成(cheng)(cheng)火花放電(dian)(dian)(dian)(dian)(dian)通(tong)道，而后保持氙燈(deng)預燃(ran)狀態宜用小電(dian)(dian)(dian)(dian)(dian)流(liu)200mA 和約(yue)2KV高壓(ya)。腔內(nei)氣體(ti)經觸發電(dian)(dian)(dian)(dian)(dian)離，預燃(ran)電(dian)(dian)(dian)(dian)(dian)路(lu)維持激光放電(dian)(dian)(dian)(dian)(dian)。當(dang)放電(dian)(dian)(dian)(dian)(dian)IGBT開關(guan)截(jie)止，燈(deng)管與蓄能電(dian)(dian)(dian)(dian)(dian)網隔離，電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容10mF/450V并聯成(cheng)(cheng)組充電(dian)(dian)(dian)(dian)(dian)；放電(dian)(dian)(dian)(dian)(dian)IGBT開關(guan)導通(tong)，蓄能電(dian)(dian)(dian)(dian)(dian)網才向燈(deng)管放電(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。