一种基于状态观测器的Buck电路控制方法  

A Control Method of Buck Circuit Based on State Observer

作　　者：葛传九 武鹏[1] 金俊喆 董祥祥 GE Chuan-jiu;WU Peng;JIN Jun-zhe;DONG Xiang-xiang(School of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学电子电气工程学院,上海201620

出　　处：《控制工程》2022年第9期1701-1706,共6页Control Engineering of China

基　　金：上海市自然科学基金资助项目(18ZR1416700)。

摘　　要：为了改善DC/DC变换器的控制性能,提升控制器与电路的抗干扰能力,在电流模式控制的基础上,设计了一个基于线性扩张状态观测器的变换器控制器,提升了应对非最小相位系统输入电压或负载变化时稳定输出电压的能力。使用线性扩张状态观测器来估计输出电压与扰动并及时在反馈中给予补偿,保证系统在外部条件变化时的输出稳定性。对某DC/DC降压变换器进行实验,结果表明所设计的控制器可行且具有良好的电压稳定性能。In order to improve the control performance of the DC/DC converter and enhance the anti-interference ability of the controller and the circuit, a converter controller based on a linear extended state observer is designed on the basis of current mode control. The ability to stabilize the output voltage of the non-minimum phase system in response to input voltage or load changes is improved. The linear extended state observer is used to estimate the output voltage and disturbance, and compensate in the feedback in time to ensure the output stability of the system when the external conditions change. The experimental results of a DC/DC buck converter show that the designed controller is feasible and has good voltage stability.

关 键 词：DC/DC电路 线性扩张状态观测器 输出电压控制 电流模式控制 

分 类 号：TM615[电气工程—电力系统及自动化]