Konstantopoulos, G. orcid.org/0000-0003-3339-6921 and Zhong, Q. (2016) Nonlinear Control of Single-Phase PWM Rectifiers with Inherent Current-Limiting Capability. IEEE Access, PP (99). p. 1.
Abstract
In this paper, a nonlinear controller with a currentlimiting property is proposed to guarantee accurate dc output voltage regulation and unity power factor operation for singlephase PWM rectifiers without the need of a phase-locked-loop (PLL). The proposed current-limiting controller is fully independent of the system parameters and can guarantee asymptotic stability and convergence to a unique solution for the closedloop system using nonlinear control theory. Without requiring the instantaneous measurement of the grid voltage, a PLL, an external limiter or a saturation unit, the proposed strategy guarantees that the input current of the rectifier will always remain below a given value. An analytic framework for selecting the controller parameters is also presented to provide a complete controller design procedure and it is also proven that the currentlimiting property is maintained even when the grid voltage drops. Extensive experimental results are presented to verify the proposed controller when the load changes, the reference dc output voltage changes and the grid voltage drops.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | 2169-3536 (c) 2016 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission |
Keywords: | PWM rectifiers; nonlinear control; current limit; asymptotic stability; grid voltage dip |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/J01558X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Jul 2016 09:58 |
Last Modified: | 05 Jul 2016 09:58 |
Published Version: | http://dx.doi.org/10.1109/ACCESS.2016.2585038 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/ACCESS.2016.2585038 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:101482 |