Parameters design of a sliding mode controller with a hysteresis band for buck converters in continuous and discontinuous conduction modes

IEICE Electronics Express

Li Zhe¹  Lin Mao¹  Wu Chen¹  Li Yinghui¹ 

[1] Aeronautics and Astronautics Engineering School, Air Force engineering University

关键词: sliding mode control (SMC);    sliding surface;    hysteresis;    buck converter;    discontinuous conduction mode (DCM);    particle swarm optimization (PSO);   

DOI  :  10.1587/elex.13.20160448

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(18)In this paper, a parameter design method of a sliding mode controller with a hysteresis band is proposed for buck converter application, which is based on the proper analysis of the controller parameters�? influences on existence condition, conduction mode and transient performance. This work discovers the fact that the trajectory of the closed loop system will end at an undesired limit cycle or equilibrium in discontinuous conduction mode, and establishes the mathematical relationship between the system overshoot and the sliding coefficient α. Next, in order to keep operating in continuous conduction mode and have a superior steady-state and transient performance, the upper limit of the hysteresis band border δ, the upper and lower limit of α are given accordingly. Finally, The effectiveness of the given design method is validated by simulation and experiment for steady-state and transient responses.

【 授权许可】

Unknown