Stefan Wallberg Email & Phone Number

Gothenburg, Se

Västerås, Västmanlands Län, Sverige

Västerås, Västmanland, Sverige

System design engineer responsible for main circuit equipment, system performance and execution of STATCOM tenders and projects.As system designer, I am a key team member for the success in tenders and projects with both internal and external stakeholders, for example other discipline leads and main circuit equipment suppliers.In my role as system designer I have also been involved in quality investigations, continuous improvement, system studies (DPS) and as technically responsible for High Voltage CIrcuit Breakers.In the fall of 2022 I joined the field services team as commissioning engineer for a 300 MVAr STATCOM project in Germany, also including customer trainings.

Ludvika, Dalarnas Län, Sverige

Joined the Hitachi ABB Power Grids trainee program in september 2020 until april 2021. I had three job rotations within the program:1. Production engineering within High Voltage Breakers, earning a yellow belt Lean Six Sigma in reorganizing a production line.2. Marketing & Sales within HVDC Service, developing a sales strategy for circuit board equipment.3. Electrical design with Power Transformers Business, working with continuous improvements in transformer design.

Ringhals

Master's thesis - "Active power losses within Ringhals on-site power system" written together with Marco Ramos.Abstract: "An on-site power system in a nuclear power plant, such as Ringhals, include many components. There are active power losses in every load, and a mapping of induction motors, transformers and generators has been conducted. The losses in the on-site power system is dependent on the generator's terminal voltage, where a lower voltage yield larger total active power losses as the current is increased. The power factor is decided by the transmission grid and will alter at any given moment. When the on-site power system operates at a lower power factor (lagging), the losses are higher. Operating the system at leading load yields lower losses in the on-site power system. There are four boundary conditions to operate the generator. These boundaries consist of rated load of the step-up transformer, reactive power output limit, stability margins for the generator in under excitation and terminal voltage for the generator.In conclusion, the lowest possible active power losses in the on-site power system is when the generator consumes reactive power. However, when the generator is consuming reactive power it is forced to operate in under excitation, resulting in the generator approaching its stability limits.

Göteborg, Sverige

"The purpose of the council is to work for an attractive education and securing the supply of engineers for the electric power oriented businesses. As a student representative the primary task is to forward the student’s perspective on the education."Elkraftrådet har till syfte att verka för en så attraktiv utbildning som möjligt och se till att säkra försörjningen av civilingenjörer/motsv. till det elkraftinriktade näringslivet. Som studentrepresentant är den primära uppgiften att delge rådet studenternas perspektiv på utbildningen."

Göteborg, Sverige

Summer job that turned into a part time job. Included testing on site, electrical design and VBA-programming in Excel.

Göteborg, Sverige

Mentee at MEDIT (mentorship programme for electrical, computer science and information technology engineering students) at Chalmers University of Technology

Göteborg, Västra Götaland, Sverige

Göteborg, Sverige

Elected (5 months full time) by the Chalmers Student Union to arrange “Chalmerscortègen” 2017, a project involving more than 1000 people. My main responsibility was to manage a group of 15 workers.

Sigtuna, Stockholm, Sverige

Master Of Science - Ms (Sv. Civilingenjörsexamen), Electric Power Engineering

Bachelor Of Science - Bs, (Sv. Kandidatexamen), Electrical Engineering