scholarly journals Study on Modulation Strategy of Electronic Converters Based on Improved D-NPC Topology for Full Electric Vehicle

2021 ◽  
Vol 12 (2) ◽  
pp. 80
Author(s):  
Yonglei Cao ◽  
Xiaodong Zhang ◽  
Xiang Liu ◽  
Yuling Ma
Keyword(s):  
Power Allocation ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Fault Tolerant ◽  
Power Source ◽  
Signal Conversion ◽  
Experimental Platform ◽  
Vehicle System ◽  
Overall Performance ◽  
The Stability

The battery is the only power source of full electric vehicles, and the converter plays a key role in power and signal conversion; therefore, the stability and reliability of the converter determine the performance of the whole vehicle system. In order to improve the overall performance of the converter and optimize the function of the ID-NPC (improved diode neutral-point-clamped) topology with power allocation, the two-level topology is improved, and it is also a part of the ID-NPC topology. Based on the ID-NPC topology, the converter level can switch according to the proposed three-level and two-level modulation conversion strategies, which extends the fault-tolerant function of the converter. Finally, a simulation and experimental platform is built to verify the function of the improved topology and the feasibility of the proposed modulation strategy.

An Experimental Study on Hydrogen Powered Electric Vehicle

1997 ◽  
Author(s):  
Koji Kishida ◽  
Mitsuo Tanaka ◽  
Ken Kanai ◽  
Yoshiaki Kato ◽  
Akihiro Ito
Keyword(s):  
Fuel Cell ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Prime Power ◽  
Power Source ◽  
Polymer Electrolyte Fuel Cell ◽  
Research Experience ◽  
Fuel Cell Stack ◽  
University Of Technology ◽  
Selection Of

Based upon research experience on fuel cell technology at the Fukui University of Technology, an effort has been made to develop a hydrogen powered electric vehicle as a means of applying fuel cells, A polymer electrolyte fuel cell stack was chosen as the device of energy conversion from hydrogen to electricity. First, a detailed study on the performance of the fuel cell stack was carried out to assure compatibility with the vehicle energizing system. It was found that it should function well as the prime power source for electric vehicles. Selection of the traction motor was one of the optimization studies. As a result of tests with various motors, two brushless d-c motors were adopted. A small electric vehicle, weighing 300kg and loaded with a H2-tank of 10 litres (15MPa), achieved 20 km/h and the duration was 2 hours.

scholarly journals Effects of Exchanging Battery on the Electric Vehicle’s Electricity Consumption in a Single-Lane Traffic System

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Shi-Chun Yang ◽  
Wen-Zhuang Gou ◽  
Tie-Qiao Tang ◽  
Hua-Yan Shang
Keyword(s):  
Electric Vehicle ◽  
Traffic Flow ◽  
Electric Vehicles ◽  
Electricity Consumption ◽  
Numerical Results ◽  
Traffic System ◽  
Car Following ◽  
Car Following Model ◽  
The Stability ◽  
Charging Stations

We propose a car-following model to explore the influences of exchanging battery on each vehicle’s electricity consumption under three traffic situations from the numerical perspective. The numerical results show that exchanging battery will destroy the stability of traffic flow, but the effects are related to each vehicle’s initial headway, the time that each electric vehicle exchanges the battery, the proportion of the electric vehicles that should exchange the battery, the number of charging stations, and the distance between two adjacent charging stations.

Design Simulation on Automatic Mechanical Transmission of Electric Vehicle

2013 ◽  
Vol 319 ◽  
pp. 605-609
Author(s):  
Yan Dong Song
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Dynamic Characteristics ◽  
Automatic Transmission ◽  
Drive Train ◽  
Mechanical Transmission ◽  
Vehicle Dynamic ◽  
Vehicle Model ◽  
Overall Performance ◽  
Simulation Results

By optimizing the matching of automatic transmission of car, it could improve the overall performance of electric vehicles. This article analyzes the structure of the electric vehicle drive train, then selects the automatic mechanical transmission combined with the motor-driven features. Then calculate the parameters of motors, batteries, transmission and other parts. The electric vehicle model was created in the Advisor software, then the simulation conditions were selected to test the car, so the vehicle dynamic characteristics and economy were verified by simulation results.

Study and Realization of a Driver Assistive System for Control of Instantaneous Center of Rotation in an Electric Vehicle

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Hemza Saidi ◽  
Djebri Boualem
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Analytical Solutions ◽  
Experimental Testing ◽  
Vehicle Stability ◽  
Center Of Rotation ◽  
The Road ◽  
On The Road ◽  
Instantaneous Center ◽  
The Stability

The stability of electric vehicles is difficult during their mobility on a curved trajectory with several driving wheels. This problem causes a danger for the electric vehicle stability due to the effect of the instantaneous center of rotation (ICR). The desire to have more safety in this type of vehicle encourages us to develop a driving assistive system to reduce the effects of ICR in two wheels drive electric vehicles using Arduino and a LabVIEW interface for data processing that help to control the vehicle on the road. Analytical solutions and their implementations are demonstrated through experimental testing in a laboratory scale.

Fault-tolerant control based on 2D game for independent driving electric vehicle suffering actuator failures

2020 ◽  
Vol 234 (13) ◽  
pp. 3011-3025
Author(s):  
Bohan Zhang ◽  
Shaobo Lu ◽  
Lin Zhao ◽  
Kaixing Xiao
Keyword(s):  
Electric Vehicle ◽  
Control Strategy ◽  
Fault Tolerant ◽  
Pareto Frontier ◽  
Linear Quadratic Regulator ◽  
Fault Tolerant Control ◽  
Steering System ◽  
Two Dimensions ◽  
Linear Quadratic ◽  
The Stability

This paper proposes a cooperative game-based actuator fault-tolerant control strategy for a four-wheel independent drive electric vehicle with an active front steering system. For achieving fault-tolerant control and targets cooperation, a two-dimensional game strategy is proposed to balance the stability and economy. The first-dimensional game is utilized to determine the dominant control target of the actuator, then the second-dimensional game is employed to assign the fault-tolerant control task for the remaining healthy actuators. The two dimensions are integrated based on the linear quadratic differential game theory, and a hybrid weighted Pareto frontier is thus established. A Shapley value based weight calculation method is proposed to obtain a set of fair and unique weights according to the importance of each player, which makes the solution of the optimal control problem more easily obtained. The effectiveness and real-time performance of the control strategy are tested under different scenarios. The simulation results demonstrate that the proposed strategy can balance the stability and economy well, outperforms the traditional method in terms of target tracking performance. For special case, the response of the yaw rate could be improved up to 39.83% comparing to that of the linear quadratic regulator method.

Modeling and analysis of dynamic wireless charging for electric vehicles under different working scenarios

2020 ◽  
pp. 002072092092854
Author(s):  
Ning Wang ◽  
Qingxin Yang ◽  
Hengjun Zhang
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Storage System ◽  
Energy Storage System ◽  
Wireless Charging ◽  
Wireless Power ◽  
Energy Usage ◽  
Modeling And Analysis ◽  
Vehicle System ◽  
Driving Range

Dynamic wireless charging technology can solve the charging problem of electric vehicle. There is little research on the influence of dynamic wireless charging on electric vehicle. This paper establishes the energy model of the vehicle system by using Advisor and MATLAB. An energy control strategy for dynamic wireless charging of electric vehicles is designed. The influence of dynamic wireless power transfer on energy storage system loss and electric vehicle range under different operating scenarios and different minimum battery charge states is studied. The variation of state of charge, energy usage and the overall system efficiency are compared and analyzed. This paper analyzes the influence of SOC by vehicle parameters and external parameters in dynamic wireless charging, and the influence on electric vehicle driving range further.

scholarly journals Smart Battery Pack for Electric Vehicles Based on Active Balancing with Wireless Communication Feedback

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3862 ◽  
Author(s):  
Mattia Ricco ◽  
Jinhao Meng ◽  
Tudor Gherman ◽  
Gabriele Grandi ◽  
Remus Teodorescu
Keyword(s):  
Life Cycle ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Fault Tolerant ◽  
Battery Pack ◽  
Battery Management System ◽  
Battery Management ◽  
Battery Cell ◽  
Active Balancing ◽  
Battery Cells

In this paper, the concept of smart battery pack is introduced. The smart battery pack is based on wireless feedback from individual battery cells and is capable to be applied to electric vehicle applications. The proposed solution increases the usable capacity and prolongs the life cycle of the batteries by directly integrating the battery management system in the battery pack. The battery cells are connected through half-bridge chopper circuits, which allow either the insertion or the bypass of a single cell depending on the current states of charge. This consequently leads to the balancing of the whole pack during both the typical charging and discharging time of an electric vehicle and enables the fault-tolerant operation of the pack. A wireless feedback for implementing the balancing method is proposed. This solution reduces the need for cabling and simplifies the assembling of the battery pack, making also possible a direct off-board diagnosis. The paper validates the proposed smart battery pack and the wireless feedback through simulations and experimental results by adopting a battery cell emulator.

Fault-Tolerant Control of Electric Ground Vehicles With Independently-Actuated Wheels

2010 ◽  
Author(s):  
Rongrong Wang ◽  
Junmin Wang
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Control Method ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Vehicle Control ◽  
Detection Mechanism ◽  
Control Effort ◽  
Control Approach ◽  
Vehicle Architecture

This paper presents a fault-tolerant control method for four-wheel independently driven (4WID) electric vehicles. 4WID electric vehicle is one of the promising architectures for electric vehicles in the future. While such a vehicle architecture greatly increases the flexibility for vehicle control, it also demands more on system reliability, safety, and fault tolerance due to the increased number of actuators and subsystems. An active fault tolerant control approach for 4WID electric vehicle is developed to accommodate the fault of in-wheel motor and motor driver pairs. Based on an in-wheel motor/motor driver fault detection mechanism, a control-allocation based vehicle control system is designed to accommodate the in-wheel motor/motor driver fault by automatically allocating the control effort among other healthy wheels. Simulations using a high-fidelity CarSim® full-vehicle model show the effectiveness of the proposed fault-tolerant control approach.

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