Are you approaching the end of your studies and it's time to write your thesis? Why not take the opportunity to do it at Solvina?

During the spring semester 2026, we at Solvina offer a thesis opportunity within Stability of Frequency Control with a Grid Following Inverter! ✨

About the master thesis:

Battery storage with grid following inverters can be used to provide frequency control, for example in the form of synthetic inertia or ancillary services such as FCR-N. However, the power response to a frequency change may affect the phase angle of the connection point in such a way that the frequency measurement is disturbed, which can cause instability. This is particularly a risk in a weak or islanded grid. The practical stability limits for different frequency control responses have been investigated in a previous master thesis at Solvina. Now is the time to put theory into practice.

Thesis Description

This thesis aims to:

1) Verify the previous results regarding stability in the frequency response control loop. This is done by implementing the response in a grid forming inverter in a lab, and hands-on testing with different grid conditions.

2) Develop a user interface for the inverter control such that frequency control with a grid forming inverter can be demonstrated for education purpose.

WHO ARE YOU?

For this thesis we are looking for one or two students with the following background:

✔MSc student within Electric Power Engineering or similar.

Special interest in the following areas is meriting and will be considered:
✔Power grid dynamics
✔Control theory
✔Battery storage and inverters
✔Matlab/Simulink programming

WHAT YOU GET

Welcome to Solvina and Rejlers - home of the learning minds! Together we are on an exciting journey of change with the common goal of building tomorrow's society

Solvina offers you an exciting thesis work performed in a highly competent environment with expert areas such as power engineering, control engineering, and engineering management. The thesis will be performed at Chalmers and at our headquarter in Krokslätts fabriker.

Read more about Solvina here and learn more about the learning culture within Rejlers here.

Solvina är ett kunskapsföretag inom elkraftbranschen, och har verksamhet inom områdena elkraftteknik, reglerteknik och engineering management. Företaget grundades 1997 och är idag ett helägt dotterbolag till Rejlers. Solvina har ca 30 medarbetare och är lokaliserat till Mölndal i Göteborg.