Master Thesis Project - Investigation of different HV-LV DC/DC Topologies hos CEVT (China Euro Vehicle Technology AB)

CEVT is here to make urban mobility enjoyable, smart and sustainable. We fast-track innovation and transform ideas into pioneering technology solutions. Automotive is in our DNA and intelligent mobility is our core. We serve society with sustainable mobility solutions, both private and shared. As part of ZEEKR and the Geely family, one of the most innovative and fastest growing global mobility groups, our work comes to life in products and services from world-leading brands. CEVT was built by people from all over the world. We’re flexible, fast, and always in motion.

Master Thesis Project - Investigation of different HV-LV DC/DC Topologies and optimum selection for Automotive

Background

China-Euro Vehicle Technology (CEVT) is making a significant step toward the electrification of cars, and the 12V Power conversion system is a critical system in making this transition possible. A clear understanding of how the DC/DC power conversion works and how different topology and design impacts the performance of the power conversion system is necessary. Therefore, the simulation of different topology models plays a vital role in helping us understand how the power conversion will behave under various scenarios.

Scope

The overall aim of the thesis work is to:

  • Perform a literature study on different DC/DC topology models that are being currently used in the automotive industry.
  • Create a DC/DC and HV battery model to simulate the performance of the power conversion system
  • Analyze and compare the simulation result with different topology models.
  • Conclude on what factors have a major impact on the power conversion system performance

Project steps

  • Create a basic step-down DC/DC converter working model and improvise the model with different topologies.
  • Create a basic HV battery model which can discharge based on the load consumption from DC/DC.
  • Design a closed control loop for the DC/DC converter model.
  • Simulate the model with actual test data.
  • Try improvising the model by changing the switching devices, inductors, transformer, and adding snubber (At least 2 improvisations).

Prerequisites

  • Interest in vehicle electrification.
  • Knowledge in MATLAB/Simulink/LTSpice.
  • Knowledge in DC/DC and power conversion working.
  • Knowledge in HV battery.
  • Knowledge of Power Electronics, active and passive components.
  • Masters in Electrical or equivalent
  • Able to work independently.

Number of students: 2, please apply with CV and cover letter.

Starting date: January 2023. The duration of the thesis work is 20 weeks

 

For more information about the master thesis project please contact:

Vasanth Ramesh, HV Electronics Charging/Testing, +46708124813, vasanth.ramesh@cevt.se 

Last application date: 2022-10-28

Apply today. We will perform ongoing selection during the application period. We look forward to hearing from you!

Please note that due to GDPR regulations we can only accept applications sent through the recruitment system, not via email or other channels.

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