TY - CONF A1 - Beg, Nauman A1 - Rahmoun, Ahmad A1 - Armstorfer, Andreas A1 - Rosin, Argo A1 - Biechl, Helmuth T1 - Determination methods for controller parameters of back-to-back converters in electric power grids T2 - 2016 Electric Power Quality and Supply Reliability (PQ) N2 - 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 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. KW - Voltage control KW - Control systems KW - Current control KW - Transfer functions KW - Power conversion KW - Reactive power KW - Modulus Optimum Method (MO) KW - Pole Place-ment Method (PP) KW - Back-to-Back Voltage Source Converter (VSC) KW - Vector Control KW - Controller Parameter Determination Y1 - 2016 UR - https://opus4.kobv.de/opus4-hs-kempten/frontdoor/index/index/docId/84 SN - 978-1-5090-1562-7 SP - 157 EP - 164 PB - Tallinn University of Technology, Department of Electrical Engineering CY - Tallinn ER -