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This paper is focused on simulation and graphical stochastic modeling of electrical power systems. The main goal of this paper is to develop a tool for modeling and simulation of very large systems with probabilistic incidents. For this purpose, a new extension of Petri nets is introduced in this paper. Using this extension which is suitable for power engineering applications, a large system with...
Performance of an extremum seeking electric machine based antilock braking (ABS) scheme is compared to mechanical braking based ABS. The advantage of the fast time constant (torque response) of an electric machine in an ABS application is quantified. A vehicle initiating a braking maneuver at a starting speed of 125kmph is considered. The vehicle stopping distance is reduced by 30% compared to mechanical...
This paper discusses an vehicle application which uses electric double layer capacitors (EDLCs) as a power source. EDLCs are charged through a rapid charger by using wireless power transmission. In this paper, as vehicle application, the electric assisted bicycle is considered. First, the antenna for the wireless power transmission and the charger are introduced. Next, this paper compares the volume...
This research work introduces a new method for feedback control of nonlinear dynamical systems and considers as application example the problem of trajectory tracking for autonomous robotic vehicles. The control method consists of a repetitive solution of an H-infinity control problem for the mobile robot, that makes use of a locally linearized model of the robot and takes place at each iteration...
Many professional or daily activities demand load displacement by human arms or by human powered vehicles. Those activities may cause muscle-skeleton diseases even in load carrying professionals as in people carrying their daily objects. In the field of robotics, the research developments to help people at those activities are made through human-robot cooperation systems actuated by servo drives....
This paper presents a comprehensive methodology for topology evaluation of bidirectional boost converters in electrified vehicle applications for higher power density. Based on the given specifications, major components in the converters are designed and sized, including the boost inductor, power module, and DC-link capacitor. 3D Finite Element Analysis (FEA) simulations are conducted to evaluate...
A complete stabilizing PID set is developed without the need for an identified analytical model, for an automotive cruise-control system from its frequency response. The resulting set serves as a framework and is used to determine the PID gains satisfying certain performance indices. These performance measures are derived from the need for efficient tracking and disturbance rejection. This ensures...
This paper provides a new approach for emulating electric vehicle (EV) braking performance on a motor/dynamometer test bench. The brake force distribution between regenerative braking and friction braking of both the front and rear axles are discussed in detail. A brake controller is designed, which represents a very close model of an actual EV braking system and takes into account both regenerative...
The In-Wheel Motor (IWM) is the most preferable driving mechanism of electric vehicles for vehicle motion control, energy efficiency, and vehicle design flexibility. One technical issue of the IWM is the reliability of power and signal wires. Wireless power transfer technology is the best solution. In this paper, a bidirectional wireless power transfer circuit using a primary inverter and a secondary...
This paper proposed a control strategy of differential steering specialized for four wheel independent driving (4WID) EVs. Different from traditional single torque-based control method, this strategy is designed to use the advantage of fast speed control of in-wheel motor. Four wheels are regulated to desired differential speed based on the reference vehicle velocity. Combined with Ackermann-Jeantand...
Hybrid electric vehicle powertrains, especially those based on the power-split architecture, are complex dynamic systems that must be modeled in a systematic way in order to fully exploit an organized approach to control design. Much of the existing literature focuses on a high-level treatment of the modeling topic, typically emphasizing steady-state behavior. The present paper is motivated by the...
Nowadays the public transportation is submitted to severe restrictions on emissions and there are considerable incentives for low-emission technologies. In this scenario, e-bus stands out as a viable alternative. Although the weight and volume of batteries has been the an issue for electric vehicles, the urban bus has some characteristics such as predefined routes and stops that contribute to optimized...
To improve the cycle efficiency and peak output power density of energy storage systems in electric vehicles (EVs), supercapacitors have been proposed as auxiliary energy storage elements to complement the mainstream Lithium-ion (Li-ion) batteries. The performance of such a hybrid electrical energy storage (HEES) system is highly dependent on the implemented management policy. This paper presents...
An obvious obstacle to a wider utilization of electric vehicles (EVs) is the absence of a widely available charging network. Direct charging of EV batteries with dc voltage in charging stations requires deployment of expensive power electronics equipment. On the other hand, placing the same equipment on-board an EV would enable access to any three-phase grid outlet, but would substantially increase...
This paper describes a car detection method by combining data obtained from a laser and a camera. Data from the camera and the laser range finder (LRF) are combined after a calibration method has been performed. The calibration method defines the relative pose between camera and LRF. Car candidates are then extracted from the LRF data. The car candidate regions on the image are generated based on...
Charging of a large number of electric vehicles (EV) at the same time raises several technical problems or can have significant impacts on power systems like high peak power consumption. During daytime, when EVs are connected at the different charging stations at the same time, they can cause a congestion problem in the network. The paper proposes charging strategies to reduce the peak load. These...
The paper proposes a new idea, called "Interactive Energy", for the dynamic pricing and dispatching of the charging services of Electric Vehicles (EVs) in a micro-grid. In the proposed approach, the customers can choose their recharge time through an interactive application able to indicate different recharge times and related prices in function of the real time conditions of the micro-grid...
In order to perform an energy management strategy in hybrid electrical vehicles containing fuel cells, based on a power supply linking ultra-capacitors, batteries and fuel cells, time series prediction based on wavelet transform and auto-regressive integrated moving average is proposed in this paper. By wavelet denoising, the noise is removed from a part of the signal, by the auto-regressive integrated...
This paper proposes a novel control strategy for fuel cell electric vehicle including hydrid tanks using fuzzy logic controller. The aim of the study is to manage both thermal and electric energy with the same controller in order to use the fuel cell system as a range extender by preventing the batteries state of charge to drop too quickly. The presented controller use both batteries state of charge...
Start-stop system of an internal combustion system of a hybrid drive is designed to reduce energy consumption of the drive and reduce the produced emissions. Effectiveness of the start-stop system heavily depends on its ability to correctly predict when the combustion engine will be idle. This makes the problem suitable for model predictive control. In this contribution, we study the case of a hybrid...
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