Virtual calibration of thermal management system using 1D simulations
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Mobility engineering (MPMOB), MSc
Publicerad
2023
Författare
Munimahadeva, Harshith
Selvan Anuradha, Vishnu Simba
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The integration of electrical components in Battery Electric Vehicles (BEVs) has
resulted in a significant increase in the complexity of thermal management systems.
Unlike Internal Combustion Engine (ICE) vehicles, BEVs require meticulous
control of temperature to ensure optimal performance and mitigate the adverse effects
of heat accumulation. Efficient thermal management plays a crucial role in
BEV development as it directly impacts the system’s overall efficiency and, consequently,
the vehicle’s range. Achieving precise temperature control throughout the
system presents challenges that necessitate the implementation of circuits and valves
specifically designed for effective thermal regulation. The optimization of thermal
management in BEVs is of paramount importance, while simultaneously maintaining
performance and climate control capabilities.
Calibration plays a pivotal role in achieving optimal performance in the system,
ultimately enhancing the overall efficiency and range of the vehicle. Currently, the
calibration process entails the availability of a physical vehicle and a dedicated test
chamber. The vehicle undergoes a series of meticulously designed test cases conducted
at varying temperatures. The data collected from these tests is then utilized
to generate a calibrated map, building upon a base map. This iterative process may
involve repeating the calibration cycle multiple times, typically around 7-8 iterations,
to ensure a comprehensive and finely-tuned calibrated map encompassing a
wide range of pump requests. By diligently fine-tuning the calibration, it is possible
unlock the full potential of the vehicle’s performance and optimize its overall efficiency.
The thesis proposal aims to accomplish calibration using 1D simulations within a virtual
environment, eliminating the requirement for a physical vehicle and dedicated
test chamber. This innovative approach not only expedites the calibration process
but also enables automation, enhancing efficiency while reducing the likelihood of
errors. One of the key advantages of utilizing virtual models is their availability
years in advance, even before the physical vehicle is accessible. This advantageous
time frame allows for the acquisition of calibrated values well ahead of the vehicle’s
actual availability, offering a significant advantage in terms of planning, optimization,
and early validation. By leveraging 1D simulations, the proposed methodology
revolutionizes the calibration process, facilitating faster and more efficient development.
Beskrivning
Ämne/nyckelord
Thermal system , calibration , virtual calibration , 1D simulations , calibration , BEV , efficiency , thermal management