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Development of a Controller-Hardware-in-the-Loop (CHIL) Toolbox Applied for Pre-Certification Services for Grid-Connected PV Inverters According to the State-of-the-Art BDEW RL Guideline and FGW TR3 Standard
G. Lauss, D. Majstorovic, F. Leimgruber, O. Gagrica, R. Br√ľndlinger, I. Morar, Z. Miletic, N. Fischer Celanovic
Grid-Connected Inverter, Pre-Certification, Real-Time Simulation, Software Modelling, Inverter Control
Performance, Reliability and Sustainability of Photovoltaic Modules and Balance of System Components
Subtopic: Inverters and Balance of System Components
Event: 33rd European Photovoltaic Solar Energy Conference and Exhibition
Session: 5DV.3.45
1841 - 1846
ISBN: 3-936338-47-7
Paper DOI: 10.4229/EUPVSEC20172017-5DV.3.45
0,00 EUR
Document(s): paper, poster


Real-time simulation methods for interconnection requirements of grid connected inverters are increasingly in the focus of distributed generation (DG) research. While laboratory testing methods are the predominant method for the verification of safety and quality related features of grid-connected generation units in the past, load flow modelling verification methods have been integrated in state-of-the-art standardisation frameworks recently. The next step is comprised in real-time simulation methodologies applied for compliance testing of entire power electronic systems integrated in distribution network systems. The controller hardware-in-theloop (CHIL) simulation is an appropriate real-time simulation methodology that combines numerical simulations with software modelling approaches and classical hardware testing in laboratories. Control boards represent the hardware device directly connected to the power electronic periphery, which is entirely simulated in a real-time simulation environment. Hereby, input signals from voltage and current measurements and output signals for power system control are exchanged in real-time. Thanks to this setup the testing the true behaviour of the entire generation unit can be emulated precisely supported by the developed pre-certification toolbox, as the main outcome of this work. The toolbox offers possibilities of high level automation of test sequences representing a crucial benefit for an improved testing process. In addition, different parameter settings can be run in parallel on a CHIL platform, hence the total testing time can be shortened due to individual acceleration features. With the pre-standardisation toolbox for CHIL simulations a shorter time to market is achieved compared to high power laboratory testing.