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Approach to Modeling Energy Consumption of Auxiliary Consumers in Electric Vehicles

Authors:
Tuyen Nguyen
Hendrik Schulte
Reiner Kriesten

Keywords: Electric Vehicle (EV); Auxiliary Consumers; Heating, Ventilation, Air Conditioning (HVAC); Energy Consumption; Simulation Based; Weather.

Abstract:
To fully use the benefits of a hybrid energy storage system in an Electric Vehicle (EV), it requires an effective energy management system to control the energy flow. Knowledge of how energy consumption is generated in EVs is therefore important for the development of such a system. Since one of the biggest energy consumptions in modern EVs are generated by the auxiliary consumers next to the y consumption of EVs realistically, an auxiliary model needs to take into account all relevant auxiliary consumers, including the heating/air-conditioning system and other switched, dynamic, comfort and continuous consumers. The vehicle interior is therefore modeled using a 1-zone air model and the auxiliary consumers (such as heating/air conditioning, power steering and others) are adjusted based on environmental conditions. The electric power steering’s energy demand is calculated dynamically during the journey. The energy consumption of the heating system matches literature data with deviation less than 8%, while the consumption of other auxiliary consumers matches measured values with deviation of 2.8%. The focus is on the energy consumption of auxiliary consumers in EVs, which are a significant factor in the energy flows of the vehicle. The model accounts for factors, such as weather and driving behavior, that affect the use of auxiliary consumers and the resulting energy consumption.

Pages: 41 to 46

Copyright: Copyright (c) IARIA, 2023

Publication date: March 13, 2023

Published in: conference

ISSN: 2327-2058

ISBN: 978-1-68558-061-2

Location: Barcelona, Spain

Dates: from March 13, 2023 to March 17, 2023