大功率弧焊逆變電源的IGBT保護技術

摘要：本文通過分析IGBT的結構及其安全工作區，解釋了在實際應用中可能造成其損壞的原因，并利用硬件電路結合單片機的控制程序對弧焊逆變電源的IGBT采取相應措施進行保護，從而確保了IGBT安全可靠的工作。 敘詞：IGBT　保護　弧焊 Abstract：The reasons of IGBT damaged in application are explained by analyzing structure and safety work areas of IGBT. The fitting measures to protection to the IGBT of the arc-welding inverter power are also carried by using the hardware electric circuit and the controlling procedures of singlechip. These measures above are proved to be effective Keyword：IGBT protection the arc-welding