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Determination methods for controller parameters of back-to-back converters in electric power grids

  • The paper presents a new optimization method for PI controllers of back-to-back voltage source converters using a vector control scheme to enable the control of active and reactive power transmission between two independent grids, for example, an emulator as a load or a source between the medium voltage distribution grid and a low voltage island grid. The control principle based on three phase systems in dq-components enables an independent control of active and reactive power with a simple structure using PI controllers. The presented optimization method using pole placement (PP) technique for tuning of the controllers leads to a higher degree of freedom and therefore to better results compared to the modulus optimum (MO) optimization method discussed in [1], [2]. A cascaded control model consisting of inner current and outer power/voltage control loops is being used for the optimization of the system's transient response. The mathematical modeling of the control system as well as the evaluation of the controller parameters areThe paper presents a new optimization method for PI controllers of back-to-back voltage source converters using a vector control scheme to enable the control of active and reactive power transmission between two independent grids, for example, an emulator as a load or a source between the medium voltage distribution grid and a low voltage island grid. The control principle based on three phase systems in dq-components enables an independent control of active and reactive power with a simple structure using PI controllers. The presented optimization method using pole placement (PP) technique for tuning of the controllers leads to a higher degree of freedom and therefore to better results compared to the modulus optimum (MO) optimization method discussed in [1], [2]. A cascaded control model consisting of inner current and outer power/voltage control loops is being used for the optimization of the system's transient response. The mathematical modeling of the control system as well as the evaluation of the controller parameters are described in detail. A comparison of the presented optimization method for controllers with existing methods is shown by simulation results using the software PSCAD.show moreshow less

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Metadaten
Author:Nauman Beg, Ahmad Rahmoun, Andreas Armstorfer, Argo RosinORCiD, Helmuth Biechl
DOI:https://doi.org/10.1109/PQ.2016.7724106
Identifier:978-1-5090-1562-7 OPAC HS OPAC extern
Parent Title (English):2016 Electric Power Quality and Supply Reliability (PQ)
Publisher:Tallinn University of Technology, Department of Electrical Engineering
Place of publication:Tallinn
Document Type:conference proceeding (article)
Conference:Electric Power Quality and Supply Reliability (PQ), 2016, Tallinn
Language:English
Year of first Publication:2016
Tag:Back-to-Back Voltage Source Converter (VSC); Control systems; Controller Parameter Determination; Current control; Modulus Optimum Method (MO); Pole Place-ment Method (PP); Power conversion; Reactive power; Transfer functions; Vector Control; Voltage control
Number of pages:8 Seiten
First Page:157
Last Page:164
Institutes:Fakultät Elektrotechnik
IEES - Institut für Elektrische Energiesysteme
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften
Publication Lists:Biechl, Helmuth
Armstorfer, Andreas
Publication reviewed:begutachtet
Release Date:2020/07/15
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