晶闸管弧焊逆变器半桥变换电路的工作状态分析及设计

OPERATING STATES ANALYSls AND ELECT-ROMAGNETIC DESIGN OF HALF-BRIDGECOMMUTATING CIRCUIT OF THYRISTORARC WELDING INVERTER

在新建立的电流、电压均为非零初始条件的ＲＬＣＵ型电容放电理论基础上，分析了各种典型运行状态及相应的激磁范围，确定了合理的设计依据状态。通过设计状态下的Ｔ形等效电路，解相应的电路方程，得到了有关电磁量的变化规律，提供了进行精确、合理的工程设计的基本公式，为晶闸管弧焊逆变器的发展和提高创造了有利条件。

Under the theory foundation built up tecently of RLCU-type capacitor disch-arge with nonzero-current and nonzero-voltage initial condition, every typical operatingstate and its corresponding excited magnetic level are analyzed. In the concrete, reasona-ble design state is determined. By the T-type equivalent circuit in design state, and so-lving its corresponding circuit equations, the varying rules of related electric and inagne-tie variates are gotten, the basie formulas for aeeurate and reasonable engineering designare Provided, and favour condition for developing and iniproving thyristor arc weldinginverter is Produced.