Filip Johnsson

Professor at Chalmers University of Technology

Chalmers University of Technology

Sweden

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Positions (1)

Peiyuan Chen

University Name

Chalmers University of Technology

2 months ago

PhD position in Grid Stability Analysis of Renewable Electricity Systems

Chalmers University of Technology invites applications for a fully funded PhD position in Grid Stability Analysis of Renewable Electricity Systems. This opportunity is based in the Division of Electric Power Engineering at the Department of Electrical Engineering, with joint supervision from the Division of Energy Technology. The research project addresses the critical challenges of grid stability as the electricity system transitions to converter-dominated generation and high penetration of inverter-based resources. The project will focus on modelling large-scale power systems, stability analysis, and evaluating the capabilities of phasor-domain simulation tools in capturing converter-related phenomena. The research environment at Chalmers is dynamic and interdisciplinary, with strong collaborations across international research groups, industries, and grid companies. The Division of Electric Power Engineering is renowned for its theoretical and experimental research in electric power technology, while the Division of Energy Technology specializes in sustainable energy systems and conversion technologies. The project is closely linked to large research initiatives such as Mistra Electrification and North European Power Perspectives, offering extensive opportunities for collaboration and impact. As a doctoral student, you will take advanced courses within the Graduate School of Electrical Engineering, develop scientific concepts, and communicate your research findings. The position includes teaching or other duties up to 20% of working hours, potentially extending the appointment to five years. Main research tasks involve modelling wind power plants and energy storage systems for stability analysis, as well as large-scale system modelling. The starting salary is 35,725 SEK per month (from May 2026), and you will enjoy full employee benefits, including access to Sweden’s generous parental leave, subsidized day care, free schools, and healthcare. Chalmers is committed to gender equality and diversity, offering Swedish language courses for international students. Eligibility requires a Master’s degree in electric power engineering or energy system engineering, strong English communication skills, and relevant experience in electric power engineering or energy systems modelling. Additional experience in power system operation, control, stability, grid-connected converters, time domain simulation (RMS and EMT), and tools such as powerfactory, PSS/E, PSCAD, MATLAB/SIMULINK is advantageous. Physical presence in Gothenburg is required throughout the study period, and a valid residence permit must be presented by the start date. To apply, submit your application in English as PDF files (CV, personal letter, motivation, thesis, transcripts) via the online application form. Incomplete applications and those sent by email will not be considered. References will be requested after the interview. The deadline for applications is June 17, 2026. For further information, contact Associate Professors Peiyuan Chen and Lisa Göransson, or Professor Filip Johnsson. Join Chalmers and contribute to the advancement of sustainable energy systems and future power grids in a world-class research environment.

2 months ago

Articles (1)

Potential Revenue from Reserve Market Participation in Wind Power- and Solar Power-Dominated Electricity Grids: The Near-Term, Mid-Term, and Long-Term

As electricity systems become increasingly dominated by variable inverter-based generation (such as wind and solar photovoltaics (PV)), additional sources of variability appear, while the share of dispatchable thermal power plants decreases. Maintaining a stable grid frequency requires new sources of inertia to slow the frequency changes, as well as new sources of reserve power to counter the imbalances. This work uses a linear optimization modeling approach to analyze the reserve market of the electricity system during the transition to a carbon-free system with high shares of variable electricity generation. The modeling is performed for three regional contexts and with varying degrees of available flexibility technologies. As for the reserve supply, batteries, electrolyzers, electric boilers and heat pumps for district heating, curtailed wind and solar power, and hydropower and thermal power plants are all included. The results indicate that of these suppliers of reserves, the introduction of grid-scale batteries into the system drastically reduces the reserve market size. Only early in the transition is revenue from the reserve market greater than 5% of the total revenue for any technology. While the demand for reserves increases as the share of solar PV and wind power increases, the modeling reveals that access to flexible loads, storage units, and emulated inertia from wind power also increases. Depending on the choice of flexibility measures available, demand-side participation could play a major role in minimizing the cost of grid stability in the future.

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Year:

2024