The Experts below are selected from a list of 2856 Experts worldwide ranked by ideXlab platform
H. K. Ozturk - One of the best experts on this subject based on the ideXlab platform.
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A review on solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ahmet Yilanci, Ibrahim Dincer, H. K. OzturkAbstract:Abstract There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths – from photovoltaic panels to the consumer – are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization.
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a review on solar hydrogen Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ibrahim Dincer, Ahmet Yilanci, H. K. OzturkAbstract:Abstract There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths – from photovoltaic panels to the consumer – are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization.
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A review on solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ahmet Yilanci, Ibrahim Dincer, H. K. OzturkAbstract:There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths - from photovoltaic panels to the consumer - are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization. © 2008 Elsevier Ltd. All rights reserved.
Ahmet Yilanci - One of the best experts on this subject based on the ideXlab platform.
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A review on solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ahmet Yilanci, Ibrahim Dincer, H. K. OzturkAbstract:Abstract There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths – from photovoltaic panels to the consumer – are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization.
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a review on solar hydrogen Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ibrahim Dincer, Ahmet Yilanci, H. K. OzturkAbstract:Abstract There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths – from photovoltaic panels to the consumer – are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization.
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A review on solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications
Progress in Energy and Combustion Science, 2009Co-Authors: Ahmet Yilanci, Ibrahim Dincer, H. K. OzturkAbstract:There are several methods for producing hydrogen from solar energy. Currently, the most widely used solar hydrogen production method is to obtain hydrogen by electrolyzing the water at low temperature. In this study, solar hydrogen production methods, and their current status, are assessed. Solar-hydrogen/Fuel Cell Hybrid energy systems for stationary applications, up to the present day are also discussed, and preliminary energy and exergy efficiency analyses are performed for a photovoltaic-hydrogen/Fuel Cell Hybrid energy system in Denizli, Turkey. Three different energy demand paths - from photovoltaic panels to the consumer - are considered. Minimum and maximum overall energy and exergy efficiencies of the system are calculated based on these paths. It is found that the overall energy efficiency values of the system vary between 0.88% and 9.7%, while minimum and maximum overall exergy efficiency values of the system are between 0.77% and 9.3% as a result of selecting various energy paths. More importantly, the hydrogen path appears to be the least efficient one due to the addition of the electrolyzer, the Fuel Cells and the second inverter for hydrogen production and utilization. © 2008 Elsevier Ltd. All rights reserved.
Qingchun Lu - One of the best experts on this subject based on the ideXlab platform.
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Development of Fuel Cell Hybrid powertrain research platform based on dynamic testbed
International Journal of Automotive Technology, 2020Co-Authors: Minggao Ouyang, Qingchun LuAbstract:An experimental research platform based on a dynamic testbed is developed and applied for Fuel Cell Hybrid powertrain integration and control. A driver brake model is added to the dynamic testbed to simulate the braking process of an electric vehicle. Sub-systems of the Fuel Cell Hybrid powertrain are tested, and characteristic parameters are obtained. A simulation platform is constructed in LabVIEW environment, and its validity is verified by dynamic test results. A real time control system is developed with an embedded PC for the function of rapid control prototyping. Using this platform, Fuel Cell battery Hybrid and Fuel Cell supercapacitor Hybrid configurations are investigated. This platform provides a powerful tool for Fuel Cell powertrain research and development.
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energy management strategy based on fuzzy logic for a Fuel Cell Hybrid bus
Journal of Power Sources, 2008Co-Authors: Qingchun LuAbstract:Fuel Cell vehicles, as a substitute for internal-combustion-engine vehicles, have become a research hotspot for most automobile manufacturers all over the world. Fuel Cell systems have disadvantages, such as high cost, slow response and no regenerative energy recovery during braking; Hybridization can be a solution to these drawbacks. This paper presents a Fuel Cell Hybrid bus which is equipped with a Fuel Cell system and two energy storage devices, i.e., a battery and an ultracapacitor. An energy management strategy based on fuzzy logic, which is employed to control the power flow of the vehicular power train, is described. This strategy is capable of determining the desired output power of the Fuel Cell system, battery and ultracapacitor according to the propulsion power and recuperated braking power. Some tests to verify the strategy were developed, and the results of the tests show the effectiveness of the proposed energy management strategy and the good performance of the Fuel Cell Hybrid bus.
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Energy management strategy based on fuzzy logic for a Fuel Cell Hybrid bus
Journal of Power Sources, 2008Co-Authors: Dawei Gao, Zhenhua Jin, Qingchun LuAbstract:Fuel Cell vehicles, as a substitute for internal-combustion-engine vehicles, have become a research hotspot for most automobile manufacturers all over the world. Fuel Cell systems have disadvantages, such as high cost, slow response and no regenerative energy recovery during braking; Hybridization can be a solution to these drawbacks. This paper presents a Fuel Cell Hybrid bus which is equipped with a Fuel Cell system and two energy storage devices, i.e., a battery and an ultracapacitor. An energy management strategy based on fuzzy logic, which is employed to control the power flow of the vehicular power train, is described. This strategy is capable of determining the desired output power of the Fuel Cell system, battery and ultracapacitor according to the propulsion power and recuperated braking power. Some tests to verify the strategy were developed, and the results of the tests show the effectiveness of the proposed energy management strategy and the good performance of the Fuel Cell Hybrid bus. ?? 2008 Elsevier B.V. All rights reserved.
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Development and application of Fuel Cell Hybrid powertrain simulation platform
2008 IEEE Vehicle Power and Propulsion Conference, 2008Co-Authors: Feifei Liu, Dawei Gao, Zhenhua Jin, Qingchun LuAbstract:A forward looking simulation platform for Fuel Cell Hybrid powertrain is developed in Matlab/Simulink environment in this paper. Components of Fuel Cell Hybrid powertrain are tested and characteristic parameters are obtained to build models. The component models are verified by comparing with experiment data. Diver model is constructed for forward looking simulation method. Controller model including power distribution strategy and regenerative braking strategy is separated from component models. The simulation platform is validated with data from testbed experiments. Four configurations of Fuel Cell Hybrid powertrain are studied and analyzed using this simulation platform. Application of the platform shows it is a powerful tool for development of Fuel Cell vehicle.
Junzhi Zhang - One of the best experts on this subject based on the ideXlab platform.
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Comparative study of two different powertrains for a Fuel Cell Hybrid bus
Journal of Power Sources, 2016Co-Authors: Dawei Gao, Zhenhua Jin, Junzhi Zhang, Jianqiu LiAbstract:The powertrain plays an essential role in improving the tractive performance and the Fuel consumption of Fuel Cell Hybrid vehicles. This paper presents a comparative study of two different powertrains for Fuel Cell Hybrid buses. The significant difference between the two powertrains lies in the types and arrangements of the electrical motor. One powertrain employs an induction motor to drive the vehicle, while the other powertrain adopts two permanent magnetic synchronous motors for near-wheel propulsion. Besides, the tiny difference between the proposed powertrain is the supply path of the Fuel Cell accessories, which can have an effect on the powertrain efficiency. The component parameters and energy management strategies for the two powertrain are determined. The Fuel Cell Hybrid buses equipped with the two powertrains are developed, and some road tests are achieved, according to the chosen procedures or driving cycles. The paper focuses on the tractive performance and energy analysis of the powertrains based on the testing results. Finally, the paper summarizes the relative merits of the proposed powertrains.
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Braking energy regeneration control of a Fuel Cell Hybrid electric bus
Energy Conversion and Management, 2013Co-Authors: Junzhi Zhang, Chen Lv, Yutong LiAbstract:Abstract This paper presents the braking energy regeneration control of a Fuel Cell Hybrid electric bus. The configuration of the regenerative braking system based on a pneumatic braking system was proposed. To recapture the braking energy and improve the Fuel economy, a control strategy coordinating the regenerative brake and the pneumatic brake was designed and applied in the FCHB. Brake safety was also guaranteed by the control strategy when the bus encounters critical driving situations. Fuel economy tests were carried out under China city bus typical driving cycle. And hardware-in-the-loop tests of the brake safety of the FCHB under proposed control strategy were also accomplished. Test results indicate that the present approach provides an improvement in Fuel economy of the Fuel Cell Hybrid electric bus and guarantees the brake safety in the meantime.
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Braking energy regeneration control of a Fuel Cell Hybrid electric bus
Energy Conversion and Management, 2013Co-Authors: Junzhi Zhang, Mingzhe Qiu, Yutong Li, Chen Lv, Dongsheng SunAbstract:This paper presents the braking energy regeneration control of a Fuel Cell Hybrid electric bus. The configuration of the regenerative braking system based on a pneumatic braking system was proposed. To recapture the braking energy and improve the Fuel economy, a control strategy coordinating the regenerative brake and the pneumatic brake was designed and applied in the FCHB. Brake safety was also guaranteed by the control strategy when the bus encounters critical driving situations. Fuel economy tests were carried out under China city bus typical driving cycle. And hardware-in-the-loop tests of the brake safety of the FCHB under proposed control strategy were also accomplished. Test results indicate that the present approach provides an improvement in Fuel economy of the Fuel Cell Hybrid electric bus and guarantees the brake safety in the meantime. ?? 2013 Elsevier Ltd. All rights reserved.
Dongsheng Sun - One of the best experts on this subject based on the ideXlab platform.
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Braking energy regeneration control of a Fuel Cell Hybrid electric bus
Energy Conversion and Management, 2013Co-Authors: Junzhi Zhang, Mingzhe Qiu, Yutong Li, Chen Lv, Dongsheng SunAbstract:This paper presents the braking energy regeneration control of a Fuel Cell Hybrid electric bus. The configuration of the regenerative braking system based on a pneumatic braking system was proposed. To recapture the braking energy and improve the Fuel economy, a control strategy coordinating the regenerative brake and the pneumatic brake was designed and applied in the FCHB. Brake safety was also guaranteed by the control strategy when the bus encounters critical driving situations. Fuel economy tests were carried out under China city bus typical driving cycle. And hardware-in-the-loop tests of the brake safety of the FCHB under proposed control strategy were also accomplished. Test results indicate that the present approach provides an improvement in Fuel economy of the Fuel Cell Hybrid electric bus and guarantees the brake safety in the meantime. ?? 2013 Elsevier Ltd. All rights reserved.
