DC-DC升降压变换器协同控制器设计

针对DC-DC升降压变换器存在负载电阻扰动的问题,提出一种基于扰动观测器的协同控制器策略。使用非线性扰动观测器技术对负载不确定性扰动进行估计,再将其观测值代入所设计的协同控制器中,构建一种基于非线性扰动观测器的协同控制算法,达成鲁棒稳定跟踪期望电容输出电压的目的。通过一系列仿真对比,验证了该方法的可行性以及有效性。

Design of DC-DC Buck-Boost Converter Cooperative Controller

Aiming at the problem of load resistance disturbance in DC-DC buck-boost converter, a cooperative controller strategy based on disturbance observer is proposed. The nonlinear disturbance observer technology is used to estimate the uncertain disturbance of the load. The observation value information is introduced into the designed cooperative controller, and a cooperative control algorithm based on the nonlinear disturbance observer is constructed. The robustness and stable track of the expected capacitor output voltage is achieved. Finally, the feasibility and effectiveness of the proposed method are verified through a series of simulations.