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Range anxiety is one of the main obstacles to the wide diffusion of electric vehicles. Better understanding of the vehicle's energy consumption and driving range may help reduce electric vehicles drivers' stress. This work proposes a model-based predictive strategy to estimate the energy driving range of an electric vehicle. The estimation takes into account the specific vehicle parameters, as well...
Electric and Hybrid Electric Vehicle technologies are developing rapidly as a solution to energy and environmental issues. EV/HEV power train system integrates a number of electro mechanical systems and an optimum subsystem design is inevitable to arrive at a practical solution in terms of performance and size of the power train components. Component sizing is essential to meet the performance requirements...
Nowadays electrical vehicles are in demand and the developments in their field are increasing which is required to improve the performance of the vehicle in terms of single range to cover. An efficient energy storage device is required to improve the performance and the efficiency of an EV. Power requirement of EV is dynamic in nature which requires a high energy and high power density source. A single...
This paper focuses on the methodology to apply the Dynamic Programming (DP) to the optimal operation control of trains with onboard Lithium-ion batteries in order to accumulate knowledge of energy-efficient driving technique. In this methodology, the energy-efficient driving control is formulated as an optimal control problem with two-point boundary conditions. We propose the model to consider the...
The paper presents the concept of supercapacitor based plug-in retrofit kit that can be easily installed on the electric vehicle powered by lead-acid or by other type of batteries without the intervention in the control system to store regenerative braking energy, improve battery lifetime and efficiency. The installation of the retrofit can be done in a simple manner by connecting of only two wires...
In this paper, a mathematical model for calculating regenerative braking (RB) energy considering the time-varying efficiency of a common electric vehicle (EV) is presented, taking into account environmental conditions. The contribution factor (CF) for estimating the impact of the RB system on the total consumed energy is calculated. To validate the calculated CF, a Blade Electron EV (Converted Hyundai...
The use of a barometric pressure sensor in a wearable fall detector has been shown to improve the detection accuracy by determining the altitude change associated with the fall event. However, the barometer is a high-power-consuming sensor. This paper proposes a fall detection approach using a hermetically sealed and waterproof enclosure incorporating a small window covered by a semi-permeable membrane...
Electrical vehicle has the advantage of being friendly with environment but it does not have yet same performance as a current conventional vehicle. This work, propose strategy to improve the autonomy of electrical vehicle; at first, a model of electrical vehicle which combine lead acid batteries and DC motor is described. Moreover, control speed strategy used fuzzy logic is applied to the system...
Battery performance of a proposed solar car has been investigated under different road conditions while the car makes a nip in one of the longest routes in Dhaka city, using a model developed in Matlab Simulink. A significant reduction in energy consumption is observed when the car runs at lower speed, which is atthbuted to lower air drag at lower speed. Energy consumption further reduces with the...
As their high specific power and long cycle life over conventional batteries, Ultracapacitors have been thought as a good alternative/supplement for energy storage for city buses which operate considerable fast acceleration, deceleration and stop. In the current study, the powertrain system for a PEV (Pure Electric Vehicle) bus with batteries and ultra-capacitors for energy storage were developed...
This paper presents a new energy and power management control strategy for battery electric vehicle (BEV) with supercapacitors (SCs) based on speed command and acceleration estimation. The purpose of the control strategy is to increase the capability of regenerative braking energy capturing and to improve DC bus voltage regulation. The control strategy uses cascade voltage and current control of SCs...
Currently electric vehicles are introduced in public transport and individual traffic in order to reduce for example the noise and the green house gas emissions. Beside the advantage of higher traction drive efficiency the main disadvantage of electric vehicles compared to vehicles with conventional drive is the shorter operating distance. This is caused by the comparatively low energy density of...
The transition from classic combustion engine vehicles to electric vehicles is a major step to reduce worldwide CO2 emissions. In order to correctly and efficiently investigate impacts on the electric grid and the dimensioning of charging infrastructure, or to explore new technologies for a further increase of the driving range, realistic simulation models are required. In this paper, we present an...
In this paper, control strategy of a plug-in 4 wheel drive car is researched. According to torque request of the car, the steady work state is classified into 10 modes, which consists of 7 drive modes and 3 brake modes. Besides, torque distribution strategy among the power components which realizes basic energy management and torque coordination control which aims at reducing shock extent when mode...
This paper proposes a new control strategy and design for auxiliary power source using in Battery Hybrid Electric Vehicle (BHEV) based on acceleration power. The control strategy takes actual speed, acceleration and terminal voltage of supercapacitors (SCs) into account for controlling the energy and power demanded. The detail design of the auxiliary power source and its dynamic control are demonstrated...
This paper presents the control system of energy management for electric vehicle (EV) applications, based on the actual speed of the vehicle and the terminal voltage of supercapacitors (SCs). The cascade control of voltage and current were implemented on SCs for tracking the energy during acceleration and braking. The performances of SCs concerning the dynamic power were examined. A reliable power...
A technique capable of identifying electric vehicle (EV) mass in real-time has been a topic of research for several years due to the advantages it presents, such as the ability to dramatically improve range estimates, perform more effective torque vectoring for ABS/ESC, track delivery vehicle weight, etc. Some crucial issues in mass identification impede an easy implementation of such an algorithm,...
The successful transition of fully electric vehicle into automotive market is plagued with expensive product prices and limited drive range. While manufacturers point to fuel saving benefits, the actual cost savings after the first battery replacement presents negative economics. Hence it is necessary to maximise the fuel saving costs and to prolong the battery life as much as possible. The situation...
The objective of this paper is to give recommendations for the component sizing of a Parallel Plug-in Hybrid Electric Vehicle (PHEV) studying the influence of the Electric Motor (EM) size, Final Drive ratio (FD), the Battery Capacity (BAT) and the Internal Combustion Engine (ICE). A multiple options for the size of the components are in the market and conflicting on the vehicle efficiency and functionality...
Abundance sunlight ray in Malaysia makes it perfect to be used with the current alternative green vehicle technology: the Light Electric Vehicles (LEVs). LEV is powered by battery packs, which can be rechargeable by any external source of electricity. Hence, it is one of the targets of this study to examine the reliability of such solar fuel station. As green alone is not enough to be the purchasing...
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