Research on DC-DC Power Converters with High-Power-Density and Light-Weight for Hydrogen-Fuel-Cell Hybrid Railway System

2019 ◽  
Vol 22 (10) ◽  
pp. 799-807
Author(s):  
Jae-Bum Lee ◽  
In-Ho Cho
Keyword(s):  
Fuel Cell ◽  
High Power ◽  
Cell Hybrid ◽  
Power Converters ◽  
Light Weight ◽  
High Power Density ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Dc Power ◽  
Railway System

scholarly journals Study on Boost Converters with High Power-Density for Hydrogen-Fuel-Cell Hybrid Railway System

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 771
Author(s):  
Han-Shin Youn ◽  
Duk-Hyeon Yun ◽  
Woo-Seok Lee ◽  
Il-Oun Lee
Keyword(s):  
Fuel Cell ◽  
Power Density ◽  
High Power ◽  
Boost Converter ◽  
Experimental Results ◽  
Current Response ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Boost Converters ◽  
Railway System

Step-up DC/DC converters are needed generally for the hydrogen-fuel-cell (HFC) hybrid railway system since the HFC has difficulty directly generating a high link voltage of over 1500 V for the high-power capacity inverter to drive the traction motor in the vehicle. These step-up DC/DC converters demand a high conversion efficiency with low weight and volume, due to the limited space in vehicle. In this paper, step-up DC/DC converters are presented and are evaluated for the HFC hybrid railway system. By choosing the interleaved boost converter and the 3-level boost converter as promising candidates, characteristics and features of both converters are presented through the analysis of the operational principles. In addition, the optimal design methods and results of boost inductor, output capacitor, and power semiconductor devices are presented based on theoretical analysis and a real design specification for the HFC hybrid railway system. Moreover, an optimal digital control design in terms of dynamic current response and reliability, such as current-balance or voltage-balance controls, is presented in this paper. In order to verify the analysis and design results, prototypes of both converters with the 600 V input and 1200 V/20 kW output specifications are constructed and the performance of the interleaved and 3-level boost converters are demonstrated through the experimental results. The experimental results show that the 3-level boost converter is more suitable for the HFC hybrid railway system in the sense of efficiency, power-density, and dynamic current response.

Experimental tests of an air-cooling hydrogen fuel cell hybrid electric scooter

2013 ◽  
Vol 38 (25) ◽  
pp. 11144-11148 ◽  
Author(s):  
Nai-Chien Shih ◽  
Chien-Liang Lin ◽  
Chi-Ching Chang ◽  
Da-Yung Wang
Keyword(s):  
Fuel Cell ◽  
Cell Hybrid ◽  
Experimental Tests ◽  
Air Cooling ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Electric Scooter ◽  
Hybrid Electric ◽  
Fuel Cell Hybrid

Control strategies for high-power electric vehicles powered by hydrogen fuel cell, battery and supercapacitor

2013 ◽  
Vol 40 (12) ◽  
pp. 4791-4804 ◽  
Author(s):  
Pablo García ◽  
Juan P. Torreglosa ◽  
Luis M. Fernández ◽  
Francisco Jurado
Keyword(s):  
Fuel Cell ◽  
Electric Vehicles ◽  
High Power ◽  
Control Strategies ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel

scholarly journals Designing High-Voltage and Large-Capacity Battery Packs for Fuel-Cell Hybrid Railroad Propulsion System

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1259
Author(s):  
In-Ho Cho ◽  
Byoung-Hee Lee ◽  
Seong-Yun Park ◽  
Joon-Hyoung Ryu ◽  
Jong-Hoon Kim
Keyword(s):  
Fuel Cell ◽  
High Voltage ◽  
Cell Hybrid ◽  
Propulsion System ◽  
Battery Pack ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Large Capacity ◽  
Railroad Vehicles ◽  
Battery Packs

Due to the problem of global warming caused by greenhouse gas emissions, internal combustion engines in a lot of transportation systems are being electrified. For the railroad propulsion system, it is essential to apply a high-voltage/large-capacity energy source in order to ensure that the system operates properly. Thus, fuel-cell and rechargeable battery systems are being considered nowadays. The battery system can receive and store all regenerative energy to improve energy efficiency. In addition, since the battery pack of a propulsion system utilizing a hydrogen fuel-cell requires continuous charging/discharging, regardless of the railroad vehicle’s driving profile, the battery pack is designed to ensure its stable use and to minimize maintenance costs. Consideration should be given to the characteristics of railroad vehicles. In this research, a hydrogen fuel-cell hybrid railroad vehicle propulsion system specification, which has been studied recently, was applied to study the considerations in the design of high-voltage/large-capacity battery packs for railroad vehicles. In particular, the passive and active cell-balancing circuit and an algorithm for the stable management of battery packs for hybrid railroad vehicles in which a continuous charging/discharging operation is repeated are proposed and verified through experiments.

Energy distribution analyses of an additional traction battery on hydrogen fuel cell hybrid electric vehicle

2020 ◽  
Vol 45 (49) ◽  
pp. 26344-26356 ◽  
Author(s):  
Bahattin Tanç ◽  
Hüseyin Turan Arat ◽  
Çağlar Conker ◽  
Ertuğrul Baltacioğlu ◽  
Kadir Aydin
Keyword(s):  
Fuel Cell ◽  
Energy Distribution ◽  
Electric Vehicle ◽  
Cell Hybrid ◽  
Hybrid Electric Vehicle ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Hybrid Electric ◽  
Fuel Cell Hybrid
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