scholarly journals Energy model of transport machines with braking energy recovery

2021 ◽  
Vol 2094 (4) ◽  
pp. 042053
Author(s):  
A A Solovev ◽  
D E Malkin ◽  
M A Melkomukov ◽  
I I Yakushevich ◽  
A K Kuguk
Keyword(s):  
Energy Storage ◽  
Service Life ◽  
Energy Recovery ◽  
Energy Model ◽  
Energy Losses ◽  
Propulsion Systems ◽  
Hybrid Propulsion ◽  
Energy Recuperation ◽  
Optimal Values ◽  
Braking Energy Recovery

Abstract Most of the time, modern transport vehicles operate in unsteady modes. Undoubtedly, the reasons for the decrease in the efficiency of machines are fluctuations in speed and load, their deviations from the optimal values cause an increase in energy losses. Another reason for the increase in energy losses is the process of forced braking when it is necessary to stop the car. A class of vehicles with hybrid propulsion systems that can recover braking energy are currently being developed. Significant advantages among them are transport vehicles with a flywheel energy storage, which have a long service life. This article discusses the energy model of transport vehicles with the possibility of braking energy recuperation.

A Novelty Energy Storage Algorithm for High Speed Trains: Economical and Energy Saving Evaluation

2021 ◽  
Author(s):  
Mi̇ne Sertsöz
Keyword(s):  
Energy Storage ◽  
Energy Recovery ◽  
High Speed ◽  
Regenerative Braking ◽  
Utilization Rate ◽  
High Speed Train ◽  
Rail Systems ◽  
High Speed Trains ◽  
Braking Energy Recovery

Abstract Increasing the utilization rate of regenerative braking energy in rail systems is one of the ongoing applications increasing in significance in recent years. This study develops a novelty algorithm within the scope of this objective and provides the calculation of the regenerative braking energy recovery rate and then making a decision for storage or back to grid of this energy. Afterwards, the regenerative braking energy was calculated with the help of this algorithm for Eskisehir-Ankara and Ankara-Eskisehir trips in two different passengers (load) scenarios, using the YHT 65000 high-speed train, which was chosen as a case study. Then, with a decision maker added to this classical regenerative braking energy algorithm, it will be decided whether this energy will be stored or forward back into the grid for the purpose of providing non-harmonic energy to the grid.

Modeling and Simulation for Super Capacitor Braking Energy Recovery Process of Micro EV

2011 ◽  
Vol 383-390 ◽  
pp. 7390-7395
Author(s):  
Jin Yu Qu ◽  
Li Yan Liang
Keyword(s):  
Energy Storage ◽  
Electric Vehicle ◽  
Energy Recovery ◽  
Discharge Rate ◽  
Recovery Process ◽  
Storage Device ◽  
Energy Storage Device ◽  
Super Capacitor ◽  
The Impact ◽  
Braking Energy Recovery

Super-capacitor is suitable as braking energy storage device for electric vehicle because of its high charge and discharge rate, long life, simple structure and reliable performance advantages. When driving motor of the electric vehicles runs on regenerative electric power state, it can not only provide braking force, but also charge to the energy storage device to recover the kinetic energy, thus endurance mileage of electric vehicle can be extended considerably. In this paper, braking energy recovery model was built by using the Matlab/Simulink software, and whole vehicle model based on automobile theory, the motor efficiency model and super-capacitor model were mainly included. Meanwhile some researches were made on the simulation, and the impact of the super-capacitor on the braking energy recovery was analyzed.

scholarly journals Impact of the road conditions on the amount of braking energy

2017 ◽  
Vol 171 (4) ◽  
pp. 265-268
Author(s):  
Tomasz SZCZEPAŃSKI ◽  
Anna SKARBEK-ŻABKIN ◽  
Paweł DZIEDZIAK
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Energy Recovery ◽  
Combustion Engine ◽  
Urban Agglomeration ◽  
The Road ◽  
Energy Recuperation ◽  
The Monte Carlo Method ◽  
Design Solutions ◽  
Braking Energy Recovery

The issue of energy recuperation is increasingly found in modern cars (both electric and hybrid, as well as powered by a combustion engine only). Road conditions are one of the essential factors determining the appropriateness of using certain design solutions in braking energy recovery systems. This article presents an analysis of road conditions prevailing in a large urban agglomeration together with an evaluation of their usefulness for utilizing the braking energy. Road tests were carried out for this purpose, and their analysis used the Monte Carlo method to determine the pseudo-accidental courses.

scholarly journals Electric Vehicles Mileage Extender Kinetic Energy Storage

2015 ◽  
Vol 45 (1) ◽  
pp. 17-38
Author(s):  
Venelin Jivkov ◽  
Vutko Draganov ◽  
Yana Stoyanova
Keyword(s):  
Energy Storage ◽  
Kinetic Energy ◽  
Energy Levels ◽  
Minimum Energy ◽  
Initial Energy ◽  
Additional Increase ◽  
Hybrid Propulsion ◽  
Energy Demands ◽  
Energy Recuperation ◽  
Energy Buffer

Abstract The proposed paper considers small urban vehicles with electric hybrid propulsion systems. Energy demands are examined on the basis of European drive cycle (NEUDC) and on an energy recuperation coefficient and are formulated for description of cycle energy transfers. Numerical simulation results show real possibilities for increasing in achievable vehicle mileage at the same energy levels of a main energy source - the electric battery. Kinetic energy storage (KES), as proposed to be used as an energy buffer and different structural schemes of the hybrid propulsion system are commented. Minimum energy levels for primary (the electric battery) and secondary (KES) sources are evaluated. A strategy for reduced power flows control is examined, and its impact on achievable vehicle mileage is investigated. Results show an additional increase in simulated mileage at the same initial energy levels.

scholarly journals An Optimal Slip Ratio-Based Revised Regenerative Braking Control Strategy of Range-Extended Electric Vehicle

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1526
Author(s):  
Hanwu Liu ◽  
Yulong Lei ◽  
Yao Fu ◽  
Xingzhong Li
Keyword(s):  
Service Life ◽  
Electric Vehicle ◽  
Control Strategy ◽  
Energy Recovery ◽  
Regenerative Braking ◽  
Improve Energy Efficiency ◽  
Capacity Loss ◽  
Battery Capacity ◽  
Braking Control ◽  
Braking Energy Recovery

The energy recovered with regenerative braking system can greatly improve energy efficiency of range-extended electric vehicle (R-EEV). Nevertheless, maximizing braking energy recovery while maintaining braking performance remains a challenging issue, and it is also difficult to reduce the adverse effects of regenerative current on battery capacity loss rate (Qloss,%) to extend its service life. To solve this problem, a revised regenerative braking control strategy (RRBCS) with the rate and shape of regenerative braking current considerations is proposed. Firstly, the initial regenerative braking control strategy (IRBCS) is researched in this paper. Then, the battery capacity loss model is established by using battery capacity test results. Eventually, RRBCS is obtained based on IRBCS to optimize and modify the allocation logic of braking work-point. The simulation results show that compared with IRBCS, the regenerative braking energy is slightly reduced by 16.6% and Qloss,% is reduced by 79.2%. It means that the RRBCS can reduce Qloss,% at the expense of small braking energy recovery loss. As expected, RRBCS has a positive effect on prolonging the battery service life while ensuring braking safety while maximizing recovery energy. This result can be used to develop regenerative braking control system to improve comprehensive performance levels.

scholarly journals UNIDIRECTIONAL BRAKING ENERGY RECOVERY SYSTEM FOR ELEVATORS

2019 ◽  
Vol 3 ◽  
pp. 124
Author(s):  
Kaspars Kroics
Keyword(s):  
Energy Storage ◽  
Energy Recovery ◽  
Main Element ◽  
Test Results ◽  
Energy Recovery System ◽  
Recovery System ◽  
Converter Topology ◽  
Li Ion ◽  
Braking Energy Recovery ◽  
Selection Of

The paper discusses design of energy storage based energy recovery system for elevators. The main element of such system is unidirectional DC-DC converter to control energy flow to supercapacitor or li-ion battery based energy storage. The paper gives explanation of selection of the converter topology and some design considerations. The test results of experimental prototype on a developed test bench are presented in the paper.

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