In view of the unstable output voltage of the new double full bridge ZVZCS converter of beam power supply when it is disturbed by external disturbance or internal parameter change in practical application, combined with the characteristics of the beam power supply system model, this paper proposes a beam power supply control strategy based on linear active disturbance rejection control (LADRC). Firstly, the working principle of the new double full bridge ZVZCS converter of beam power supply is analyzed, and considering the parasitic parameters and effective duty cycle of circuit components, the small signal equivalent model under two working modes is established. Secondly, combined with the system model and linear active disturbance rejection control theory, a double closed-loop controller is designed, which takes the second-order LADRC as the outer voltage loop and PI control as the inner current loop. Finally, the simulation and experimental results show that the designed controller has stronger robustness, anti-interference and better dynamic response speed than the traditional double closed-loop PI controller in load switching and dual-mode switching, and has a good development prospect.

中文翻译：

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光束电源新型双全桥ZVZCS变换器的线性主动抗扰控制控制

针对梁式电源新型双全桥ZVZCS变换器在实际应用中受到外界干扰或内部参数变化时输出电压不稳定的问题，结合梁式电源系统模型的特点，提出一种基于线性自抗扰控制（LADRC）的光束电源控制策略。首先分析了梁式电源新型双全桥ZVZCS变换器的工作原理，并考虑电路元件的寄生参数和有效占空比，建立了两种工作模式下的小信号等效模型。其次，结合系统模型和线性自抗扰控制理论，设计了双闭环控制器，以二阶 LADRC 作为外电压环，以 PI 控制作为内电流环。最后，仿真和实验结果表明，所设计的控制器在负载切换和双模切换方面比传统的双闭环PI控制器具有更强的鲁棒性、抗干扰性和更好的动态响应速度，具有良好的发展前景。