【摘要】 分析了脉宽调制型半桥式逆变电路的稳态工作过程 ,利用求解等效电路过渡过程的方法得到了其输出功率的数学表达式 ,并给出了一种脉宽调制型半桥式逆变焊机主电路参数的理论计算方法。计算结果表明 ,在增大换流电容的同时利用变压器进行阻抗变换 ,可提高电路的输出功率更多还原

【Abstract】 The working process of the half bridge pulse length modulation circuit in a steady state was analyzed. The mathematical expression of the output power of circuit was developed after solving the transient of the equivalent circuit. The result shows that the output power of the circuit can be amplified by varying load resistance with the increase of the commutation capacitance and reduction of the transformation ratio of the transformer in the circuit. The main circuit parameters for half bridge pulse length modulation inverter welding machine were also given.更多还原