Benchmark Study on Impedance Identification Methods for Grid Connected Converters
Conference: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/07/2019 - 05/09/2019 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2019
Pages: 7Language: englishTyp: PDF
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Authors:
Petkovic, Marko; Dujic, Drazen (Power Electronics Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland)
Abstract:
The increasing number of renewable energy sources connected to the grid also introduces large number of different power electronics converters into the system. This paper provides a comparative benchmark of methods to identify the frequency characteristics of a grid connected converter model. Analytical open-loop and closed-loop models are verified through offline simulations and real-time hardware-in-the-loop measurements. To verify the model and identify the transfer functions linking input and output variables, a pseudo-random binary sequence signal is used for perturbation in both cases.