Impedance-based stability analysis of multi-parallel inverters applying total source admittance
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
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Impedance-based stability analysis of multi-parallel inverters applying total source admittance. / Alenius, Henrik; Berg, Matias; Luhtala, Roni; Roinila, Tomi; Messo, Tuomas.
Proceedings of the IEEE Workshop on Control and Modeling for Power Electronics (COMPEL): 17-20 June 2019, Toronto, ON, Canada. IEEE, 2019.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
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TY - GEN
T1 - Impedance-based stability analysis of multi-parallel inverters applying total source admittance
AU - Alenius, Henrik
AU - Berg, Matias
AU - Luhtala, Roni
AU - Roinila, Tomi
AU - Messo, Tuomas
PY - 2019/6/1
Y1 - 2019/6/1
N2 - The utility-scale wind and solar electricity production is typically connected to the power grid through multiple parallel three-phase inverters. One of the main issues in such grid-connected systems is the harmonic resonance caused by interactions between the grid and inverters. A common method for the analysis of these systems has been the impedance-based stability criterion. However, in systems that have multiple parallel inverters, the system complexity and challenges in obtaining the required impedance measurements may deteriorate the accuracy of the impedance-based approach. This paper discusses the aggregation of parallel inverters and the stability analysis of such grid-connected system. A simple method, based on impedance measurements, is shown for defining the allowable number of paralleled inverters so that the system remains stable. Experimental results are shown from power hardware-in-The-loop setup recently developed at DNV GL Flexible Power Grid Lab.
AB - The utility-scale wind and solar electricity production is typically connected to the power grid through multiple parallel three-phase inverters. One of the main issues in such grid-connected systems is the harmonic resonance caused by interactions between the grid and inverters. A common method for the analysis of these systems has been the impedance-based stability criterion. However, in systems that have multiple parallel inverters, the system complexity and challenges in obtaining the required impedance measurements may deteriorate the accuracy of the impedance-based approach. This paper discusses the aggregation of parallel inverters and the stability analysis of such grid-connected system. A simple method, based on impedance measurements, is shown for defining the allowable number of paralleled inverters so that the system remains stable. Experimental results are shown from power hardware-in-The-loop setup recently developed at DNV GL Flexible Power Grid Lab.
U2 - 10.1109/COMPEL.2019.8769695
DO - 10.1109/COMPEL.2019.8769695
M3 - Conference contribution
SN - 978-1-7281-1843-7
BT - Proceedings of the IEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
PB - IEEE
ER -