scholarly journals Energetic Performances Booster for Electric Vehicle Applications Using Transient Power Control and Supercapacitors-Batteries/Fuel Cell

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2251
Author(s):  
Ismail Oukkacha ◽  
Cheikh Tidiane Sarr ◽  
Mamadou Baïlo Camara ◽  
Brayima Dakyo ◽  
Jean Yves Parédé

In this paper, a hybrid electric power supply system for an electric vehicle (EV) is investigated. The study aims to reduce electric stress on the main energy source (fuel cell) and boost energetic performances using energy sources with high specific power (supercapacitors, batteries) for rapid traction chain solicitations such as accelerations, decelerations, and braking operations. The multisource EV power supply system contains a fuel cell stack, a lithium batteries module, and a supercapacitors (Sc) pack. In order to emulate the EV energy demand (wheels, weight, external forces, etc.), a bidirectional load based on a reversible current DC-DC converter was used. Fuel cell (Fc) stack was interfaced by an interleaved boost converter. Batteries and the Sc pack were coupled to the DC point of coupling via buck/boost converters. Paper contribution was firstly concentrated on the distribution of energy and power between onboard energy sources in consonance with their dynamic characteristics (time response). Second contribution was based on a new Sc model, which takes into consideration the temperature and the DC current ripples frequency until 1000 Hz. Energy management strategy (EMS) was evaluated by simulations and reduced scale experimental tests. The used driving cycle was the US Federal Test Procedure known as FTP-75.

2021 ◽  
Vol 92 ◽  
pp. 142-155
Author(s):  
V. A. Sednev ◽  

Introduction. Increasing of number, scale and duration of the consequences of emergency situations associated with the violation of the conditions of normal living of people requires the creation of temporary field accommodation points for the affected population and rescue units. At the same time, electric power supply in field temporary accommodation facilities plays a crucial role in the complex of tasks and measures aimed at providing life to the injured population and rescue units. At the same time, there are no mobile autonomous sources of electric energy for providing life support to people in the field in the organizational and staff structure of rescue units, and the existing sources of electric energy in the complexes of equipment used in areas of emergency situations cannot be used for these purposes. Therefore, it is necessary to develop a scientific and methodological approach to determine necessary and sufficient number of sources of electric energy for the power supply of the life support of the injured population and rescue units when they are placed in field temporary accommodation points. The purpose of the study. Electric power supply of field temporary accommodation points for the injured population and rescue units, ensuring the required reliability of electric power supply, maximizing its efficiency in the conditions of possible resource constraints and minimizing the influence of the uncertainty factor in the planning of electricity consumption. Research methods. The main provisions of the calculation of electrical loads, system theory, set theory, probability theory and the apparatus of mathematical statistics. The results of the study. A methodology has been developed that allows to justify the power of electric energy sources for the power supply of field temporary accommodation points for the injured population and rescue units, rational options for the power supply system, the nomenclature and number of electric energy sources for the life support of people in the field; to calculate the electric network; to evaluate the operation of the power supply system, based on the probability of failure-free operation of the source of electric energy; to justify the composition of engineering means to ensure the creation of the power supply system. Conclusion. The scientific and methodological approach for determining the composition of electric energy sources for the power supply of life support for the injured population and rescue units when they are placed in field temporary accommodation points is justified, which also allows to resolve the contradiction between the need to organize the power supply of life support for people in temporary accommodation points and the lack of a reasonable structure of electric energy sources for these purposes. Keywords: temporary accommodation point, injured population, rescue formation, consumers, electric power supply, organization


2021 ◽  
Vol 93 ◽  
pp. 208-225
Author(s):  
V. A. Sednev ◽  

Introduction. The increasing number and duration of the consequences of emergency situations associated with the violation of the conditions of normal living of people requires the creation of autonomous temporary field camps to accommodate the affected population, which, as a rule, create and maintain rescue formations. In the complex of tasks aimed at providing life support to the affected population and rescue units in field camps, their electric power supply plays an important role. However, there are no autonomous sources of electric energy for the power supply of life support for people in the field in the organizational and staff structure of rescue units. At the same time, it is necessary to determine the number of electric energy sources for the power supply of life support for people in field camps, not only taking into account the application of the provisions for calculating the electrical loads of consumers, but also taking into account additional factors, in particular, taking into account the output of electric energy sources for operational reasons, the failure of service personnel, the organization of technical support of the power supply system, its planning, repair. The purpose of the study. Electric power supply of field points of temporary accommodation of the affected population and rescue units, ensuring the reliability of their electric power supply, minimizing the influence of the uncertainty factor when planning their power consumption. Research methods. The main provisions of the calculation of electrical loads, system theory, set theory, probability theory and the apparatus of mathematical statistics. The results of the study. Recommendations have been developed on the composition of electric energy sources for the power supply of life support to the affected population and rescue units when placed in field camps, taking into account additional factors affecting their composition, in particular, the output of electric energy sources for operational reasons, the failure of maintenance personnel, the organization of technical support of the power supply system and other issues. Conclusion. The scientific and methodological approach is justified, which allows taking into account additional factors affecting the formation of the composition of electric energy sources for the power supply of life support of people in temporary accommodation points, which, in combination with scientific and methodological approaches to substantiate the electrical loads of consumers, allows us to develop a comprehensive scientific and methodological approach to substantiate the composition of electric energy sources for the power supply of life support of people. The resulting composition of electric energy sources can be refined and serves as an example of assessing the stability of the power supply system, the criterion of stability of which is its ability to provide consumers with electric energy. Keywords: temporary accommodation point, affected population, rescue formation, consumers, electric power supply, organization


2020 ◽  
Vol 8 (6) ◽  
pp. 2867-2975

This paper provides detailed modeling and simulation of a proton exchange membrane (PEM) fuel cell electric vehicle. The power supply system consists of a PEM fuel cell and a battery bank. The power management system effectively manages the supply flow from the dual power supply system without compromising the efficient working condition of both power supply systems. The mathematical modeling of each subsystem of the hybrid electric vehicle is presented. All the subsystems are then combined and simulated and the results are presented and discussed


2018 ◽  
pp. 8-13
Author(s):  
Boris M. ANTONOV ◽  
◽  
Nikolai N. BARANOV ◽  
Konstantin V. KRYUKOV ◽  
Yuri K. ROZANOV ◽  
...  

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