Enhacement of Grid-Synchronization Stability by Means of Disturbance Estimation
Conference: PCIM Europe digital days 2021 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/03/2021 - 05/07/2021 at Online
Proceedings: PCIM Europe digital days 2021
Pages: 6Language: englishTyp: PDF
Authors:
Freijedo, Francisco D.; Lopez, Diego; Huempfner, Roland (Huawei Technologies Duesseldorf, Nuremberg Research Center, Germany)
Abstract:
Stability of grid-following grid-connected converters is a topic of paramount interest, nowadays. This work analyses grid-synchronization instability phenomena and, eventually, proposes a stiff-grid estimator technique to improve the overall system dynamics. The benefits are proved in the frequency domain for the case of small-signal linearised models. For the non-linear phenomenon, described as a modulation instability problem, the improvements are validated by experimental verification.