Optimized active disturbance rejection control for DC-DC buck converters with uncertainties using a reduced-order GPI observer

Yang, Jun, Cui, Hongyu, Li, Shihua and Zolotas, Argyrios (2018) Optimized active disturbance rejection control for DC-DC buck converters with uncertainties using a reduced-order GPI observer. IEEE Transactions on Circuits and Systems I: Regular Papers, 65 (2). pp. 832-841. ISSN 1549-8328

Full content URL: http://doi.org/10.1109/TCSI.2017.2725386

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Optimized active disturbance rejection control for DC-DC buck converters with uncertainties using a reduced-order GPI observer
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Abstract

The output voltage regulation problem of a PWM- based DC-DC buck converter under various sources of uncertainties and disturbances is investigated in this paper via an optimized active disturbance rejection control (ADRC) approach. Aiming to practical implementation, a new reduced-order generalized proportional integral (GPI) observer is first designed to estimate the lumped (possibly time-varying) disturbances within the DC- DC circuit. By integrating the disturbance estimation information raised by the reduced-order GPI observer (GPIO) into the output prediction, an optimized ADRC method is developed to achieve optimized tracking performance even in the presence of distur- bances and uncertainties. It is shown that the proposed controller will guarantee the rigorous stability of closed-loop system, for any bounded uncertainties of the circuit, by appropriately choosing the observer gains and the bandwidthfactor. Experimental results illustrate that the proposed control solution is characterised by improved robustness performance against various disturbances and uncertainties compared to traditional ADRC and integral MPC approaches.

Keywords:Active Disturbance Rejection Control, Reduced-order GPIO, Robustness, Uncertainty, Power Electronics Control, Circuits control, Disturbance rejection, Advanced control
Subjects:H Engineering > H660 Control Systems
H Engineering > H100 General Engineering
H Engineering > H661 Instrumentation Control
H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Engineering
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ID Code:27856
Deposited On:14 Jul 2017 13:47

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