Simulation study of a magnetic coupled resonant wireless energy transfer and storage system for electric vehicles under dynamic condition

Maintenance management is an orderly procedure to address the planning, organization, monitoring and evaluation of maintenance activities and associated costs. The maintenance management allows to have an efficient tool either to the management of the preventive or curative activity, an optimization of the production tool, and finally a follow-up of the costs and the performances. A good maintenance management system can help prevent problems and damages to the operating and storage environment, extend the life of assets, and reduce operating costs.In this paper, we will first present our model on the joint management of spare parts and maintenance. We will do a simulation study of our model, presented in the first section of this paper. The results of this study are presented in the second section through the presentation of the influence of certain parameters of the model on the operation of the system under consideration. This study carried out on the graphical interface of Matlab, which is one of the performance evaluation techniques. It allows to visualize the variations and anomalies which can be reached in the system considered as an overcoming of the repair of the machines by the unforeseen breakdowns.

Download Full-text

On the Investigation of Energy Efficient Torque Distribution Strategies through a Comprehensive Powertrain Model

Sustainability ◽

10.3390/su13084549 ◽

2021 ◽

Vol 13 (8) ◽

pp. 4549

Author(s):

Sara Salamone ◽

Basilio Lenzo ◽

Giovanni Lutzemberger ◽

Francesco Bucchi ◽

Luca Sani

Keyword(s):

Energy Storage ◽

Electric Vehicles ◽

Energy Efficient ◽

Storage System ◽

Energy Storage System ◽

Torque Distribution ◽

Driving Cycles ◽

Energy Models ◽

Battery State Of Charge

In electric vehicles with multiple motors, the torque at each wheel can be controlled independently, offering significant opportunities for enhancing vehicle dynamics behaviour and system efficiency. This paper investigates energy efficient torque distribution strategies for improving the operational efficiency of electric vehicles with multiple motors. The proposed strategies are based on the minimisation of power losses, considering the powertrain efficiency characteristics, and are easily implementable in real-time. A longitudinal dynamics vehicle model is developed in Simulink/Simscape environment, including energy models for the electrical machines, the converter, and the energy storage system. The energy efficient torque distribution strategies are compared with simple distribution schemes under different standardised driving cycles. The effect of the different strategies on the powertrain elements, such as the electric machine and the energy storage system, are analysed. Simulation results show that the optimal torque distribution strategies provide a reduction in energy consumption of up to 5.5% for the case-study vehicle compared to simple distribution strategies, also benefiting the battery state of charge.

Download Full-text