Defence of dissertation in the field of Electromechanics, M.Sc (Tech.) Antti Lehikoinen
The title of thesis is “Circulating and eddy-current losses in random-wound electrical machines”
The performance requirements of electrical motors have grown dramatically in the recent years. The increasing use of electric vehicles as well as new EU efficiency standards have both contributed to this. To meet these demands, computer simulations are very widely utilized in the design process. However, up to now, precise modeling of motor windings has led to very long computation times.
During this study, a 10-hour-long simulation was shortened to some minutes. This was possible through the development of new precise computational models, which were significantly faster than the existing ones. Additionally, an approach was developed to model the uncertainty and variation caused by the manufacture process of the windings.
The developed models can be directly applied to speed up the design process of electrical motors. The time saved can then be used to develop higher-performance motors, or for example in marketing the new products. Indeed, the new computational models will be published open-source in the near future.
Opponent: Professor Herbert de Gersem, Darmstadt University of Technology, Germany
Supervisor: Professor Antero Arkkio, Aalto University School of Electrical Engineering, Department of Electrical Engineering and Automation.
Contact information: Antti Lehikoinen, p. 0400 739 653, email@example.com