Robust adaptive flatness based control for non-ideal boost converter in fuel cell electric vehicles

• Published in: IEEE International Conference on Industrial Technology (Online) pp. 1707 - 1712
• Main Authors: Li, Qian, Huangfu, Yigeng, Xu, Liangcai, Zhao, Dongdong, Gao, Fei
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.02.2019
• Subjects: dual loop control; flatness based control; Fuel cells; Inductors; Load modeling; Non-ideal Boost converter; Observers; parameters estimation; Resistance; Voltage control; Voltage measurement
• ISSN: 2643-2978
• DOI: 10.1109/ICIT.2019.8843698

In this paper, an innovative robust dual loop control strategy for the non-ideal Boost converter subject to load resistance disturbances and input voltage variation is successfully developed and implemented. By converting the power losses of non-ideal Boost converter into serial and parallel resistance, the equivalent circuit and its mathematical model are established. Then, for the outer voltage loop, a flatness based control incorporated with a parameters estimation technique used to estimate the unknown input voltage and output current is designed to assure tight reference voltage tracking under the extern disturbances. Meanwhile, a rigorous stability proof based on the Routh-Hurwitz criteria is given. Moreover, for the inner current loop, a simple PI controller is employed to achieving the reference current tracking. Finally, the validity and robustness of the proposed control scheme and parameters estimation accuracy are verified through numerical simulation.