中文摘要：

在分析现有逆变式切割电源控制系统的缺点的基础上，提出基于极点配置的双闭环控制应用于大功率逆变式切割电源中的移相全桥零电压开关（phase shift full bridge zero voltage switched，PS-FB-ZVS）变换器。首先介绍PS-FB-ZVS变换器的小信号模型，然后分析基于极点配置理论的双闭环控制系统，进行逆变式切割电源的参数整定，最后通过仿真和实验证明：电流内环稳态和动态性能良好；具有电压外环的控制系统不仅获得恒定的空载电压，而且减小了空载损耗，使变压器不易饱和，降低了输出整流管电压应力；切割电源的这种双环控制系统克服了在起弧时2个并联环不停地切换而不容易转移成大弧的缺点，实现了无缝切换，具有响应速度快、超调不大、稳态误差小的优点，并且对外部干扰具有极强的鲁棒性。

英文摘要：

By analyzing the shortcomings of the control system of the traditional inverter power supply for metal cutting machine, this paper presents the double close loop control system based on pole assignment for inverter cutting machine power supply which is based on phase shift full bridge zero voltage switched （PS-FB-ZVS）. First, the paper introduces the small signal mode of PS-FB-ZVS pulse width modulation （PWM） converter, then analyzes the double close loop control system with the pole assignment theory, and assigns parameters about the inverter cutting machine power supply. Finally, through simulations and experiments, it can be seen that the stability and dynamic performance of the current internal loop is good, voltage external loop can obtain invariable no-load voltage, reduce the no-load loss, decrease the saturation probability of the transformer, and lessen the voltage stress of the output diodes; the double close loop control system can not only overcome the shortcomings of the parallel loop when it continually switches between two loops, thus realizing seamless switching, but also obtain quick dynamic responses, small overshoots, little stability error, and strong robustness.