Proportional-resonant controllers and filters for grid-connected voltage-source converters
Proportional-resonant controllers and filters for grid-connected voltage-source converters
- Author(s): R. Teodorescu ; F. Blaabjerg ; M. Liserre ; P.C. Loh
- DOI: 10.1049/ip-epa:20060008
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- Author(s): R. Teodorescu 1 ; F. Blaabjerg 1 ; M. Liserre 2 ; P.C. Loh 3
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View affiliations
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Affiliations:
1: Section of Power Electronics and Drives, Institute of Energy Technology, Aalborg University, Aalborg East, Denmark
2: Department of Electrotechnical and Electronic Engineering, Polytechnic of Bari, Bari, Italy
3: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
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Affiliations:
1: Section of Power Electronics and Drives, Institute of Energy Technology, Aalborg University, Aalborg East, Denmark
- Source:
Volume 153, Issue 5,
September 2006,
p.
750 – 762
DOI: 10.1049/ip-epa:20060008 , Print ISSN 1350-2352, Online ISSN 1359-7043
The recently introduced proportional-resonant (PR) controllers and filters, and their suitability for current/voltage control of grid-connected converters, are described. Using the PR controllers, the converter reference tracking performance can be enhanced and previously known shortcomings associated with conventional PI controllers can be alleviated. These shortcomings include steady-state errors in single-phase systems and the need for synchronous d–q transformation in three-phase systems. Based on similar control theory, PR filters can also be used for generating the harmonic command reference precisely in an active power filter, especially for single-phase systems, where d–q transformation theory is not directly applicable. Another advantage associated with the PR controllers and filters is the possibility of implementing selective harmonic compensation without requiring excessive computational resources. Given these advantages and the belief that PR control will find wide-ranging applications in grid-interfaced converters, PR control theory is revised in detail with a number of practical cases that have been implemented previously, described clearly to give a comprehensive reference on PR control and filtering.
Inspec keywords: voltage control; active filters; power convertors; electric current control; harmonic generation; proportional control; power grids; power harmonic filters
Other keywords:
Subjects: Voltage control; Control of electric power systems; Current control; Other power apparatus and electric machines; Power convertors and power supplies to apparatus
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