Thesis Work - Battery current ripple caused be electric propulsion i Göteborg

Thesis Worker at Volvo Cars

Welcome to explore the world of Volvo Cars by writing your thesis with us! As a thesis worker in our organization you are supported by a supervisor who follows you during your project. All thesis projects are arranged in business critical areas and therefore you will be able to contribute to our company purpose – providing freedom to move in a safe, sustainable and personal way – from day one! 

Background
Electric vehicles are propelled be an electric machine which is being controlled by an inverter. The inverter has a DC-link capacitor to limit the stress on the battery which supplies the inverter with electrical energy. However, the DC-link capacitor is a physically large component and costly and should therefore preferably be a small as possible. At the same time the large operating range of the electrical machine and the need of filtering of battery currents drives the need to have as large a capacitor as possible. A balancing between the two attributes is therefore needed.

Scope
Make a study of battery current needed for different capacitor sizes for various machine operation points and drive cycles.

• Model inverter with capacitor, battery and electrical machine.
• Create simplified machine control strategy to have realistic currents and voltages.
• Perform comparative studies and quantifying the impact the capacitor size has.
• Final report which describes findings and the selected control strategy and potential issues or limitations of the method.

Do you fit the profile
We are looking for you within Master of Science program with Electrical, Electronics, Controls Theory, Signals & Systems, Mechatronics or Power Electronics. You should be interest in solving challenges individually and in collaboration with positive mindset. You will work both in office and remotely during your thesis work.
 

Duration

• Start date February or earlier (can be discussed)
• The duration for this thesis work is 20 weeks.
• 30 ECTS (academic credits) if in agreement with your Thesis Advisor in University
• Number of student: 2 (we prefer that you apply as a couple)
   

How to learn more and apply
Selection will be ongoing during the application period, so do not hesitate to send in your application. Attach your Cv and personal letter stating your interests within the given area and your thoughts and credentials.

 Apply as soon as possible but no later than 2021-11-07

 Please note that applications via email will not be accepted.
 

For questions about the thesis work please contact, Manager Andreas Andersson at

Who are we?

Everything we do starts with people. Our purpose is to provide freedom to move, in a personal, sustainable and safe way. We are committed to simplifying our customers’ lives by offering better technology solutions that improve their impact on the world and bringing the most advanced mobility innovations to protect them, their loved ones and the people around them. 

Volvo Cars’ continued success is the result of a collaborative, diverse, and inclusive working environment. The people of Volvo Cars are committed to making a difference in our world. Today, we are one of the most well-known and respected car brands, with over 40,000 employees across the globe. We believe in bringing out the best in each other and harnessing the true power of people. At Volvo Cars your career is designed around your talents and aspirations so you can reach your full potential. Join us on a journey of a lifetime as we create safety, autonomous driving and electrification technologies of tomorrow.