Robust adaptive control of pulse-width modulated rectifiers based on adaptive super-twisting sliding-mode and state feedback controllers


Karabacak M., POYRAZ G.

Electric Power Components and Systems, vol.43, no.11, pp.1289-1296, 2015 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 11
  • Publication Date: 2015
  • Doi Number: 10.1080/15325008.2015.1027016
  • Journal Name: Electric Power Components and Systems
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1289-1296
  • Keywords: adaptive control, chattering, Pulse-width modulated rectifier, second-order sliding mode, super-twisting
  • Bilecik Şeyh Edebali University Affiliated: Yes

Abstract

This article proposes a new robust adaptive hybrid controller for three-phase pulse-width modulated rectifiers to improve control performance. This hybridization is implemented by combining the second-order sliding mode with the adaptive gain super-twisting control law in the DC bus voltage control loop and state feedback adaptive control in the d-q-axis current control loops. The control objectives are fourfold: (1) driving the DC bus voltage to a reference signal without using a priori knowledge of the plant parameters, (2) forcing the d-q-axis current errors to zero, (3) assuring a satisfactory power factor correction in relation to the AC source, and (4) eliminating the chattering effect. In the closed-loop control system, three-phase source currents and the DC bus voltage are supposed to be available for feedback. As a result, no a priori knowledge of the plant parameters is necessary in the design of the proposed controller. In addition, the proposed controller does not have the disadvantages of singularity, over-parameterization, and chattering phenomenon. Results of experimental studies prove that the proposed control system guarantees the tracking of reference signals with high performance despite all the parameter and external disturbance uncertainties.