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Master Thesis 30HP: How to design grounding systems for future naval vessels

Karlskrona, Sweden
Closing date: 30 November 2022

With new electronic weapons on naval vessels there is a need for new grounding systems on steel and composite naval vessels.


Naval ships have today a grounding system that is separated from the transformers neutral conductor. The weapon systems contains capacitors that are connected to ground which give gives grounding problem. The normal way to solve this to introduce UPS, batteries etc. to obtain stability. Those solutions are not suitable in an efficient way needs to be replaced with new technology that fulfills applicable regulations for shipping..

Description of the master thesis

This Master Thesis aims at looking into the needs of new weapon systems that will be used on naval vessels regarding grounding. This analysis shall be used to give guidance how design grounding systems to reduce the weapons current and voltage harmonic impact and galvanic corrosion. The thesis shall implement a simulation model taking into account the problems with grounding systems in steel and composite vessels such as electromagnetic interference (EMI), galvanic currents etc.

Your profile

This Master Thesis is suitable for one to two students with interest in electric power engineering. You are at the end of your electrical engineering masters education and about to start your Master Thesis work for 30 HP.

This position requires that you pass a security vetting based on the current regulations around/of security protection. For positions requiring security clearance additional obligations on citizenship may apply.

What you will be a part of

The section for Electrical Systems for Surface Ships is located in Karlskrona and is a part of the area Mission System, Electrical and Automation within Design and Engineering at Saab Kockums. You will work together with a team consisting of 16 system and design engineers. Electrical Systems is responsible for the electrical systems onboard a naval surface vessel as electrical propulsion, power supply, distribution, battery systems, lightning and cables. Saab is a leading defense and security company with an enduring mission, to help nations keep their people and society safe. Empowered by its 18,000 talented people, Saab constantly pushes the boundaries of technology to create a safer, more sustainable and more equitable world. Business area Kockums is world leading within its segment when it comes to development, production and maintenance of submarines, naval vessels and systems. The portfolio covers submarines with Air-Independent (AIP) systems, surface vessels containing the outmost advanced stealth technology and mine counter measure vessels as well as fast patrol and pilot boats. Kockums also delivers subsystems and components for integration in naval solutions with customers all over the world.

Last application day


Contact information

Magnus Persson, Manager

073-434 1286

Karl-Axel Olsson, Master Thesis Supervisor

073-434 2819

Saab is a company with a strong people-orientation. We offer a friendly work environment where we support and help each other to be at our best. Continuous learning, career & talent development and employee well-being are examples of areas where we always put the strongest effort to offer great opportunities.