Degradation and diagnostics of the onboard charging system

Define off-line or on-line diagnostic methods to measure the degradation of subcomponents due to either normal usage or electrical/ thermal and mechanical stresses.

Power converters are typically exposed to high switching frequency operation which can lead to different voltage/current transients which speed up the power switches or DC-link capacitor degradation which affects the durability of the whole system.

Analysis of the degradation mechanisms occurring in the IGBT power switches, DC-link capacitors, and filter capacitors during power cycling and modeling the degradation using output voltage/current measurements. The student will have opportunity to use FiXstress and FMECA for simulation.
Suitable background
Education within, or similar to, the following engineering programs are suitable: Electrical power engineering, power electronic engineering, electronic engineering. Experience with MATLAB/Simulink/ PSCAD Software.
Thesis Level: Master
Language: English
Starting date: Jan-Feb, 2023
Number of students: 1
Azam Bagheri, Predictive Maintenance Specialist, +46 (0)73 902 69 31

The Volvo Group drives prosperity through transport solutions, offering trucks, buses, construction equipment, power solutions for marine and industrial applications, financing and services that increase our customers’ uptime and productivity. Founded in 1927, the Volvo Group is committed to shaping the future landscape of sustainable transport and infrastructure solutions. Countless career opportunities are offered across the group’s leading brands and entities that share a culture of Trust, Passion, High Performance, Change and Customer Success. 

Volvo Group Trucks Technology provides Volvo Group Trucks and Business Area's with state-of-the-art research, cutting-edge engineering, product planning and purchasing services, as well as aftermarket product support. With Volvo Group Trucks Technology you will be part of a global and diverse team of highly skilled professionals who work with passion, trust each other and embrace change to stay ahead. We make our customers win.

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