Blar i Institutt for elkraftteknikk på tidsskrift "IEEE Journal of Emerging and Selected Topics in Power Electronics"
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Coordinated Control of Distributed Three-and Single-phase Inverters Connected to Three-Phase Three-Wire Microgrids
(Journal article; Peer reviewed, 2019)This paper explores the coordinated strategy named Power-Based Control to properly coordinate grid-tied single-and three-phase distributed energy resources in three-phase three-wire microgrids. By means of a narrowband, ... -
Generalized Voltage-based State-Space Modelling of Modular Multilevel Converters with Constant Equilibrium in Steady-State
(Journal article; Peer reviewed, 2018)Abstract: This paper demonstrates that the sum and difference of the upper and lower arm voltages are suitable variables for deriving a generalized state-space model of an MMC which settles at a constant equilibrium in ... -
Limitations and Guidelines for Damage Estimation Based on Lifetime Models for High-Power IGBTs in Realistic Application Conditions
(Peer reviewed; Journal article, 2020)Statistical lifetime models for high-power IGBTs are developed based on results from power-cycling experiments, and relate lifetime expectancy to the well-defined conditions of a laboratory experiment. In most cases, ... -
Optimal Shaping of the MMC Circulating Currents for Preventing AC-side Power Oscillations from Propagating into HVDC Grids
(Journal article; Peer reviewed, 2019)A constrained optimization problem based on the Lagrange multipliers method is formulated to derive the circulating current references of Modular Multilevel Converters (MMC) directly in abc coordinates. The resulting ... -
Overvoltage Suppression Scheme for Minimized Snubber Requirements in MVDC Solid-State Breakers With Series-Connected IGBTs
(Journal article; Peer reviewed, 2022) -
PI Passivity-Based Control and Performance Analysis of MMC Multiterminal HVDC Systems
(Journal article; Peer reviewed, 2019)In this paper, a decentralized PI passivity-based controller is applied to modular multilevel converters to ensure global stability of a multiterminal high-voltage direct current system. For the derivation of the controller, ... -
A Robust Circuit and Controller ParametersIdentification Method of Grid-Connected VoltageSource Converters Using Vector Fitting Algorithm
(Peer reviewed; Journal article, 2021)This article presents a vector fitting (VF) algorithmbased robust circuit and controller parameters identification method for grid-connected voltage source converters (VSCs). The dq-domain impedance frequency responses ... -
A Scalable DC/DC Converter Topology with Modularized Energy Storage for High Energy Physics Applications
(Journal article; Peer reviewed, 2023)This article presents the design and control of a high-power modular dc–dc converter for electromagnets used in high energy physics applications. The fundamental building modules, herein called bricks, can either be connected ...