School of Electrical Engineering and Computer Science at KTH

Project description

Moving towards climate neutral society, railway is going through electrification. To enhance the energy efficiency and reduce CO2 emission of electrical railway systems, it is promising to integrate energy storage system and develop advanced energy management systems with goals of 1) environmental benefits, 2) increased economic profit and reduced operation cost, 3) minimized grid impact as well as enhanced grid reliability and stability under decarbonization. 

The objective of this project is to develop and integrate innovative solutions (including the use of energy storage system, formation of an energy hub with renewable energy, active participation in electrical grids, optimisation and management tools) into the legacy railway system, to improve and enhance the infrastructure traction power supply. The PhD candidate working in this project will develop advanced optimization tools for electrical railway systems, and energy management systems for smart energy hubs.

This project is part of Europe’s Rail Flagship Project, and is funded by EU Horizon. It will collaborate with European leading transport authorities and industries, including Trafikverket (Sweden), SNCF (France), and Alstorm.

Third-cycle subject: Electrical Engineering

Supervision: Qianwen Xu and Stefan Östlund are proposed to supervise the doctoral student. 

What we offer

Admission requirements

To be admitted to postgraduate education (Chapter 7, 39 § Swedish Higher Education Ordinance), the applicant must have basic eligibility in accordance with either of the following:

  • passed a second cycle degree (for example a master's degree), or
  • completed course requirements of at least 240 higher education credits, of which at least 60 second-cycle higher education credits, or
  • acquired, in some other way within or outside the country, substantially equivalent knowledge

In addition to the above, there is also a mandatory requirement for English equivalent to English B/6, read more here


In order to succeed as a doctoral student at KTH you need to be goal oriented and persevering in your work. During the selection process, candidates will be assessed on their ability to:

  • independently pursue his or her work
  • collaborate with others,
  • have a professional approach and
  • analyse and work with complex issues.

We would also like for the candidate to have a: 

  • strong background in power systems/power electronics/optimization/AI and
  • strong writing, presentation, and communication capabilities​

After the qualification requirements, great emphasis will be placed on personal competency. 

Target degree: Doctoral degree

Information regarding admission and employment

Only those admitted to postgraduate education may be employed as a doctoral student. The total length of employment may not be longer than what corresponds to full-time doctoral education in four years ' time. An employed doctoral student can, to a limited extent (maximum 20%), perform certain tasks within their role, e.g. training and administration. A new position as a doctoral student is for a maximum of one year, and then the employment may be renewed for a maximum of two years at a time. In the case of studies that are to be completed with a licentiate degree, the total period of employment may not be longer than what corresponds to full-time doctoral education for two years.

Union representatives

You will find contact information for union representatives on KTH's website.

Doctoral section (Students’ union on KTH Royal Institute of Technology)

You will find contact information for doctoral section on the section's website.

To apply for the position

Apply for the position and admission through KTH's recruitment system. It is the applicant’s responsibility to ensure that the application is complete in accordance with the instructions in the advertisement.

Applications must be received at the last closing date at midnight, CET/CEST (Central European Time/Central European Summer Time).

Applications must include the following elements:

  • CV including your relevant professional experience and knowledge.
  • A research statement consisting 1-page statement about your previous research achievement and 2-page statement about your research proposal for this project.
  • Copies of diplomas and grades from previous university studies and certificates of fulfilled language requirements (see above). Translations into English or Swedish if the original document is not issued in one of these languages.Copies of originals must be certified.
  • Representative publications or technical reports. For longer documents, please provide a summary (abstract) and a web link to the full text.

Other information

Striving towards gender equality, diversity and equal conditions is both a question of quality for KTH and a given part of our values.

For information about processing of personal data in the recruitment process please read here.

We firmly decline all contact with staffing and recruitment agencies and job ad salespersons.

Disclaimer: In case of discrepancy between the Swedish original and the English translation of the job announcement, the Swedish version takes precedence.


Type of employment Temporary position
Contract type Full time
First day of employment According to agreement
Salary Monthly salary according to KTH's doctoral student salary agreement
Number of positions 1
Full-time equivalent 100%
City Stockholm
County Stockholms län
Country Sweden
Reference number J-2023-1418
  • Qianwen Xu,
  • Eleni Nylén,
Published 08.Jun.2023
Last application date 31.Jul.2023 11:59 PM CEST

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