A Reduced-Order Enhanced State Observer Control of DC-DC Buck Converter

IEEE Access

Mehdi Savaghebi¹  Amer M. Y. M. Ghias²  Yajuan Guan³  Jinghang Lu³  Juan C. Vasquez³  Josep M. Guerrero³ 

[1] Department of Electrical Engineering, University of Southern Denmark, Odense, Denmark;Department of Electrical and Electronic Engineering, Nanyang Technological University, Singapore;Department of Energy Technology, Aalborg University, Aalborg, Denmark;

关键词: DC-DC buck converter;    disturbance rejection;    reduced-order enhanced state observer;    robustness;    system parameter variation;   

DOI  :  10.1109/ACCESS.2018.2872156

来源: DOAJ

【 摘 要 】

This paper presents a reduced-order-enhanced state observer (RESO)-based control strategy for the PWM dc-dc buck converter. With the proposed RESO control strategy, the output voltage regulation of the dc-dc buck converter is able to achieve robust characteristics against the external disturbance and the internal parameter variation even without output current measurement. In addition, by incorporating the RESO in the controller, the output voltage regulation can be easily achieved with only a proportional gain to realize a zero steady-state error. Finally, the parameter design is discussed and the effectiveness of the proposed control strategy is verified with an experimental case study.

【 授权许可】

Unknown