A
Atle Rygg
Researcher at Norwegian University of Science and Technology
Publications - 27
Citations - 1119
Atle Rygg is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Voltage source & Nyquist stability criterion. The author has an hindex of 13, co-authored 27 publications receiving 697 citations.
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A Modified Sequence-Domain Impedance Definition and Its Equivalence to the dq-Domain Impedance Definition for the Stability Analysis of AC Power Electronic Systems
TL;DR: It is shown that if a system is incorrectly assumed to be MFD, this will lead to an erroneous or ambiguous estimation of the equivalent impedance, and with this definition the stability estimates obtained with the generalized Nyquist criterion become equivalent in both domains.
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Sequence Domain SISO Equivalent Models of a Grid-Tied Voltage Source Converter System for Small-Signal Stability Analysis
TL;DR: In this paper, a generalized method for converting multi-input and multi-output (MIMO) $dq$ impedance model of a grid-tied voltage source converter system into its sequence domain SISO equivalents was presented.
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On the Equivalence and Impact on Stability of Impedance Modeling of Power Electronic Converters in Different Domains
TL;DR: In this article, it is shown that the modified sequence domain model can be derived from the dq-domain model, and vice versa, and that the stability analysis will be identical in these two two domains.
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Impedance-Based Analysis of Interconnected Power Electronics Systems: Impedance Network Modeling and Comparative Studies of Stability Criteria
TL;DR: The capability of the Nyquist-based analysis in identifying the system’s weak point and in facilitating better network design and planning is presented and a clarification of three commonly employed impedance-based stability criteria is achieved.
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Self-Synchronization of Wind Farm in an MMC-Based HVDC System: A Stability Investigation
TL;DR: In this paper, a synchronverter is introduced in the grid side of WECS voltage-source converter (VSC), where the wind farms are connected to ac network through a modular multilevel converter (MMC)-based HVDC system.