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Thesis Work - Play music using an electrical machine.

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! 




The Electric Drive Software department at Volvo Cars is proud of being one of the most successful players within SW development for Electric Vehicles. We are responsible for delivering system solution and SW functionality for the Inverters in our electrified vehicles. Our vision is to deliver the best and most innovated functions to the market and continuously evolve our Software platform and never compromise on the safety aspects.



The inverter offers the ability to precisely control the currents in the electrical machine, and these currents creates magnetic field inside the machines which leads to mechanical deformation of the machine which gives rise to acoustic noise. By selecting currents with specific frequencies, the transfer function from currents to perceived noise can then be manipulated to the extent that it will sound like known piece of music.

The objective is to make an electrical machine controller which will make the electrical drivetrain play simple music. The main objective is to do it at stand-still without producing any net torque, but it is also desirable to be able to do this while moving without impacting the (average) machine torque produced.


Activities we for see that should be done during this thesis work are:

  • Derive electric machine controller strategies which can produce variable machine currents while not producing torque.
  • Simulate derived control strategies to verify validity of proposed method.
  • Test derived strategies on a real hardware to acoustic performance.
  • Evaluate the strategies which is the most suitable or effective in performing the task.
  • Final report which describes findings and the selected control strategy and potential issues or limitations of the method.



We believe that the suitable students have studied electrical power engineering or control theory with knowledge within electrical machines. Since the controller is expected to be derived in Matlab/Simulink experience using this SW is required. As the perceived acoustic noise is very difficult to model, we are looking for students which has a hands-on approach to implementing the derived concepts on real hardware and do measurements, fault-tracing and appropriate adaptations where needed.


This thesis work will need you to be at Volvo Cars site in Gothenburg for specific activities.



  • The duration of the Thesis is approx. 4-5 Months.
  • The Thesis starts in spring 2021, to be discussed
  • 30 ECTS (academic credits) if in agreement with your Thesis Advisor in University
  • This thesis is to be conducted by either 1 or 2 Students working in pair
  • Office, computer and software will be arranged by University and Volvo Cars.


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 resume and cover letter and copies of grades. You can provide a reference if you would like. Please note that due to GDPR applications by email will not be accepted.


If you have any additional questions regarding the position, you are welcome to contact:

Supervisor Joachim Härsjö, joachim.harsjo@volvocars.com, (+46735007411)

Hiring manager Johan Zackrisson, johan.zackrisson@volvocars.com, (+46723717012)


We want your application at the latest 2020-11-30


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.

Gothenburg, Sweden

Job requisition ID:  48252

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