Study on Dual-Energy Storage System Design for Pure Electric Vehicle

2014 ◽  
Vol 700 ◽  
pp. 193-196
Author(s):  
Shu Ting Chen ◽  
Zhi Jie Wang ◽  
Xiang Feng Zhang ◽  
Xiao Wei Zhu ◽  
Feng Hui Yang

Under the energy structure dominated by coal in China at present, the development of electric vehicles is the best way to deal with the problems of energy, environment, climate change and sustainable development and the best choice to make the auto industry change from big country to powerful country. So far, driving mileage is still the bottleneck to restrict the pure electric vehicle commercialization. Making full use of the realization of finite energy source and improving the efficiency of the driving system and the regenerative braking are the urgent problems to be solved. Regarding to the dual-requirements for high-energy density and high-power density, the dual-energy storage system is designed to be a composition of battery and ultra-capacitor plus bi-direction DC/DC converter in parallel. The main-loop circuit of the dual-energy storage system is constructed, and the working states are analyzed.

Sci ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 3 ◽  
Author(s):  
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...  

In Electrified Vehicles, the cost, efficiency, and durability of electrified vehicles are dependent on the energy storage system (ESS) components, configuration and its performance. This paper, pursuing a minimal size tactic, describes a methodology for quantitatively and qualitatively investigating the impacts of a full bandwidth load on the ESS in the HEV. However, the methodology can be extended to other electrified vehicles. The full bandwidth load, up to the operating frequency of the electric motor drive (20 kHz), is empirically measured which includes a frequency range beyond the usually covered frequency range by published standard drive cycles (up to 0.5 Hz). The higher frequency band is shown to be more efficiently covered by a Hybrid Energy Storage System (HESS) which in this paper is defined as combination of a high energy density battery, an Ultra-Capacitor (UC), an electrolytic capacitor, and a film capacitor. In this paper, the harmonic and dc currents and voltages are measured through two precision methods and then the results are used to discuss about overall HEV efficiency and durability. More importantly, the impact of the addition of high-band energy storage devices in reduction of power loss during transient events is disclosed through precision measurement based methodology.


Sci ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 26 ◽  
Author(s):  
Masood Shahverdi ◽  
Michael Mazzola ◽  
Matthew Doude ◽  
Quintin Grice ◽  
Jim Gafford ◽  
...  

In Electrified Vehicles, the cost, efficiency, and durability of electrified vehicles are dependent on the energy storage system (ESS) components, configuration and its performance. This paper, pursuing a minimal size tactic, describes a methodology for quantitatively and qualitatively investigating the impacts of a full bandwidth load on the ESS in the HEV. However, the methodology can be extended to other electrified vehicles. The full bandwidth load, up to the operating frequency of the electric motor drive (20 kHz), is empirically measured which includes a frequency range beyond the usually covered frequency range by published standard drive cycles (up to 0.5 Hz). The higher frequency band is shown to be more efficiently covered by a Hybrid Energy Storage System (HESS) which in this paper is defined as combination of a high energy density battery, an Ultra-Capacitor (UC), an electrolytic capacitor, and a film capacitor. In this paper, the harmonic and dc currents and voltages are measured through two precision methods and then the results are used to discuss about overall HEV efficiency and durability. More importantly, the impact of the addition of high-band energy storage devices in reduction of power loss during transient events is disclosed through precision measurement based methodology.


2013 ◽  
Vol 437 ◽  
pp. 213-216
Author(s):  
Shuang Du ◽  
Chun Cheng Zuo

Through matlab/simulink, the simulation models of Pure Electric Vehicle (PEV) with Dual-Energy Storage System (DESS) composed of batteries and ultra-capacitor are established. The paper designs the fuzzy control strategy for DESS and puts PEV with DESS and PEV with Single-Energy Storage System (SESS) state of capacity (SOC) of batteries comparison. Also it analyses advantages and prospects of development for PEV with DESS.


2014 ◽  
Vol 898 ◽  
pp. 896-899
Author(s):  
Zhi Yu Huang ◽  
Xiao Hua Pu

Regarding to the electric vehicle (EV) with dual-energy storage system (DESS) composed of batteries and ultra-capacitors, study on the structure and drive modes of DESS, after a detailed analysis of energy storage system based on power, resistance and constraints in driving, establish a mathematical model of energy management system of EV with DESS, and an energy management based on the fuzzy control strategy is designed. Finally, a simulation of EV with DESS by using ADVISOR simulation platform is studied, whose results show that the EV with DESS based on fuzzy control strategy can be more effective in distributing power between energy storage systems, and the dynamic performance as well as economic efficiency are also improved


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