M
Matti Lehtonen
Researcher at Aalto University
Publications - 770
Citations - 12827
Matti Lehtonen is an academic researcher from Aalto University. The author has contributed to research in topics: Fault (power engineering) & Computer science. The author has an hindex of 40, co-authored 694 publications receiving 8559 citations. Previous affiliations of Matti Lehtonen include Razi University & New York University.
Papers
More filters
Journal ArticleDOI
A Linear Model for AC Power Flow Analysis in Distribution Networks
TL;DR: This paper presents a linear PF model wherein real and imaginary parts of nodal voltages are variables and its solution does not need repetition and can be effectively integrated in the OPF problem.
Proceedings ArticleDOI
A transient fault detection technique with varying fault detection window of earth modes in unearthed MV systems
TL;DR: In this paper, a transient fault detection technique in unearthed medium voltage systems is presented, based on the amplitude of the impedance, the feeder is confirmed to be faulted or not.
Journal ArticleDOI
Effects of Environmental Factors on Partial Discharge Activity and Estimation of Insulation Lifetime in Electrical Machines
TL;DR: The endurance of insulation was estimated under different environmental conditions based on the average discharge current to differentiate between correct and incorrect PD measurements and to develop a right maintenance schedule for motors in service.
Proceedings ArticleDOI
Corrected winding eddy-current harmonic loss factor for transformers subject to nonsinusoidal load currents
TL;DR: In this paper, the authors presented a corrected harmonic loss factor by taking into account the depth of penetration, which leads to more accurate estimation of the increased transformer winding losses under non-sinusoidal load currents.
Proceedings ArticleDOI
Survey of harmonic emission of electrical vehicle chargers in the European market
TL;DR: In this article, the authors compared the harmonic characteristics of EVBCs, concentrating on the impact of variations in supply voltage magnitude on emission of low frequency harmonics, as well as their total harmonic distortion and total harmonic current indices.