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

Yang, Jun and Cui, Hongyu and 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

Documents
27856 Manuscriptv-TCAS-I-01372-2017.pdf
[img]
[Download]
[img]
Preview
PDF
27856 Manuscriptv-TCAS-I-01372-2017.pdf - Whole Document

2MB
Item Type:Article
Item Status:Live Archive

Abstract

The output voltage regulation problem of a PWM-
based DC-DC buck converter under various sources of uncertain-
ties 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
Related URLs:
ID Code:27856
Deposited On:14 Jul 2017 13:47

Repository Staff Only: item control page