Topology Design and Sliding Mode Controller Design for a Novel High Step-Up DC-DC Converter

3rd International Conference on Automation, Control and Robotics Engineering

工业技术;计算机科学;无线电电子学

Liu, Yicheng^1 ; Wang, Jieping^1 ; Chen, Hao^1 ; Tu, Haiyan^1

College of Electrical Engineering and Information Technology, Sichuan University, Chengdu

610065, China^1

关键词: Constant frequency;    Equilibrium point;    High voltage gain;    Input voltage disturbances;    Resonant inductors;    Sliding mode control(SMC);    Sliding mode controller;    Voltage multipliers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/428/1/012044/pdf
DOI  :  10.1088/1757-899X/428/1/012044

来源: IOP

【 摘 要 】

This paper discusses a high voltage gain boost converter with enhanced conversion efficiency. A passive clamped circuit is applied to the switch of quadratic boost converter. A step-up capacitor and resonant inductor is adopted to connected in series with the clamp capacitor through diodes. Those constitute a voltage multiplier cell that can absorb stray energy to clamp capacity, reduce the stresses of switch and diodes, and promote voltage gain. Furthermore, a sliding mode control (SMC) scheme with constant frequency is addressed for this converter. It is shown that the tracking error can converge to the equilibrium point against input voltage disturbance and load variation. Numerical simulations are given to verified the theoretical considerations.