Jon Are Wold Suul
Jon Are Wold Suul
Publikasjoner og ansvarsområder
A Modular Multilevel Interface for Transformerless Grid Integration
This paper presents a system configuration for transformer-less grid integration of large-scale charging infrastructures for electric vehicles (EVs) with wireless inductive charging. The proposed configuration relies on a Modular Multilevel Converter (MMC) topology as the grid interface of the charg...
Small-Signal State-Space Analysis of Inductive Battery Charging System in Off-Resonant Operation
This paper analyses the small-signal dynamics of a series-series compensated inductive charging system with a passive diode rectifier interfaced directly to a battery on the receiving side. The analyzed system is designed for utilizing the constant voltage load (CVL) characteristics of the battery t...
Optimal Shaping of the MMC Circulating Currents for Preventing AC-Side Power Oscillations from Propagating into HVdc Grids
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 analytic expressions for calculating the circulating current reference signals are ...
30 tonns utslippsfri gravemaskin. Teknologistatus, kartlegging og erfaringer
Ladeteknologi for elektrisk transport
Analysis of MMC Dynamics in DQZ Coordinates for Vertical and Horizontal Energy Balancing Control
This paper presents a control system implementation in dqz-coordinates for equalizing the average energies stored in each arm of a Modular Multilevel Converter (MMC); a control objective that is typically referred to as horizontal and vertical energy balancing. The proposed control scheme is obtaine...
Virtual Synchronous Machine Control of VSC HVDC for Power System Oscillation Damping
Two different methods for implementing inertial damping on a Virtual Synchronous Machine (VSM) and their potential for attenuating power system oscillations when utilized in a VSC HVDC terminal are investigated in this paper. As a reference case, the VSM is considered with only a frequency droop pro...