PhD Position in Mechanical Behaviour of Transformer Insulation under Dynamic Loading Norwegian University of Science and Technology in Norway

The Norwegian University of Science and Technology (NTNU) is offering a full-time, 3-year PhD position in the Department of Electric Energy, focusing on the mechanical behaviour of transformer insulation under dynamic loading. This opportunity is part of the ClampIT project, which aims to advance knowledge on clamping force evolution in power transformers through experimental studies, sensor-based monitoring, and numerical modelling. The research group High Voltage Technology at NTNU provides a collaborative and inclusive environment, with regular professional and social activities to foster community among researchers.

The project addresses the challenges faced by power transformers in modern electrical grids, including the impact of renewable energy integration, high-power EV charging, and dynamic load patterns. These factors introduce new mechanical and thermal stresses that accelerate the ageing of insulation materials and affect the clamping forces securing transformer windings. The PhD research will investigate how insulation materials such as cellulose-based pressboard and kraft paper respond to varying temperature, moisture, and ageing conditions. Key activities include experimental characterization of viscoelastic and viscoplastic behaviour, accelerated ageing experiments, analysis of fast deformation under electromechanical stresses, and numerical simulations of deformation in oil-impregnated paper insulation.

The position is supervised by Professor Øystein Hestad and Dr. Henrik Enoksen, and is embedded in a consortium involving leading industry partners, utilities, and research organizations. The research outcomes will contribute to improved transformer design standards and predictive maintenance strategies, enhancing the reliability and safety of power systems.

Applicants must have a relevant Master's degree (electric power engineering, physics, physical chemistry, material science, or equivalent) with strong academic performance (B or better on NTNU's scale). English language proficiency at B2 level (CEFR) is required, with documentation recommended via TOEFL, IELTS, or Cambridge English tests. Preferred qualifications include experience in high voltage insulation technology, numerical simulations (Finite Element, Finite Volume, Python, MATLAB), and material characterization of polymeric materials. Personal qualities such as motivation, independence, effective communication, and resilience are highly valued.

The position offers a gross annual salary of NOK 550,800, favorable pension terms, working capital for the project, free Norwegian language training, and access to employee benefits. The employment period is 3 years, with the possibility of additional career-enhancing activities. The preferred start date is summer or early autumn 2026. NTNU values diversity and encourages applications from candidates of all backgrounds.

Applications must be submitted electronically via Jobbnorge.no by 26 January 2026. Required documents include a cover letter, project outline, CV, transcripts, diplomas, documentation of English proficiency, and contact information for three referees. For further details, visit the application link or contact the supervisors listed in the position description.