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Electric vehicles represent a promising choice to decrease pollution and reducing fossil fuel consumption. However, their limited autonomy poses a challenge that prevents them from being suitable for many car users. Several practical solutions are sought to avoid this problem, in particular one may think of enhancing the battery capacity, reducing the charging time, or increasing the frequency of...
The use of battery electric vehicles (BEV) has not seen equal treatment across the US with consumers in non-urban and rural areas reporting themselves as the least likely group to consider purchasing a BEV. Studies show that rural customers are more susceptible to longer daily driving distances, insufficient charging infrastructure, and lower consumer awareness, all of which decrease BEV adoption...
The massive introduction of Electric Vehicles (EVs) is expected to significantly increase the power load experienced by the electrical grid, but also to foster the exploitation of renewable energy sources: if the charge process of a fleet of EVs is scheduled by an intelligent entity such as a load aggregator, the EVs’ batteries can contribute in flattening energy production peaks due to the intermittent...
With the uptake of electric vehicles (EVs) promoted by many governments, the impact of electric vehicles on electricity grids will become significant in the near future. In Australia, charging a typical EV battery puts the same demand per day on the grid as an average household, which could lead to a sizeable increase in peak demand. However, the negative impacts of EVs can be mitigated if their charging...
This paper investigates a smart charging strategy and a Vehicle-to-Grid (V2G) strategy and benchmarks the economic benefits for the electric vehicle (EV) owner against a zero-intelligence charging strategy in a simulation-based analysis. Smart charging optimizes the timing of charging the EV and V2G additionally allows for reselling electricity to the energy market.
The scarce supply of fossil fuel in the mere future has driven the development of electric vehicles (EV) worldwide. Plug-in connectors have been commonly proposed for EV charging, however, these systems have disadvantages such as safety, esthete, and operation in snow. Therefore, a new method to inductively charge the vehicle without any physical contact has been proposed. This paper presents a state...
In slip ratio control systems, it is necessary to detect vehicle velocity in order to detect the slip ratio. However, it is very difficult to measure the vehicle velocity directly. Then, we have proposed an estimation method and control method of slip ratio without detecting both the vehicle velocity and the acceleration. In this paper, we carry out simulations and experiments of the estimation method...
The analysis of statistic data collected from real-time driving cycle of electric vehicle in demonstrating area is providing evident that some driving cycle conditions have significant influence on vehicle performance. In addition, vehicle performance results derived from driving cycles data show relationships that help to optimize control strategy. Statistical acceleration and deceleration distributions...
Based on the research about the bidirectional buck-boost driver, reasonable projects were proposed to solve the problem that it was hard to recover the braking energy when low speed for super-capacitor electric bus. First, a passive lossless snubber project was designed to reduce the switch loss and protected the switch; the energy during switching transient process was transferred to charge the super-capacitor...
The purpose of this paper is to investigate the performance of 100 A-h lithium polymer batteries to determine their suitability for use in battery powered electric vehicles (BPEVs). The performance includes: battery cell capacity evaluation, battery efficiency, temperature effects on the performance of the batteries, self discharge, fast chargeability, and realistic load test. These are important...
A yaw motion stabilization controller in Electric Power Steering (EPS) system is designed in this paper. According to the linearized four-wheel model of vehicle, a state observer of cornering state variables, such as yaw rate angle and slip angle. In order to improve the drive comfort and drive safety for EPS, a Yaw Rate Generator is designed and a yaw rate stabilization controller is constructed...
Energy is the bedrock of our daily lives and industry. Now is the time that industry, government and academia must join together and examine highly independent, fully environmentally considerate and rational energy systems. In this presentation, recent Japanese policy will be introduced focusing on new national energy strategy. Looking at future technology trends, it is probable that, in the case...
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