Variable structure battery-based fuel cell hybrid power system and its incremental fuzzy logic energy management strategy |
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| Affiliation: | 1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, China;2. National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing, 100081, China;3. Beijing Operations, China Automotive Technology and Research Center Co., Ltd, Beijing, 100070, China;1. Electrical Engineering Department, Faculty of Engineering, Jouf University, Saudi Arabia;2. Electrical Power and Machine Department, Faculty of Engineering, Zagazig University, Egypt;3. College of Engineering at Wadi Addawaser, Prince Sattam Bin Abdulaziz University, Saudi Arabia;4. Electrical Engineering Dept., Faculty of Engineering, Minia University, Egypt;5. Computers and Automatic Control Engineering Dept., Faculty of Engineering, Tanta University, Egypt;1. Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, CP 64849, Monterrey, N.L., Mexico;2. Universidad Panamericana, Alvaro del Portillo #49 Ciudad Granja, CP 45010, Zapopan, Jalisco, Mexico;3. Centro Nacional de Investigación y Desarrollo Tecnológico, CENIDET, Depto. de Electronica, Apartado Postal 5-164, C.P 62050, Cuernavaca, Mor., Mexico;4. Depto. de Ingeniería, Universidad de Quintana Roo, Blvd. Bahía S/n Esq. I. Comonfort, CP 77019, Chetumal, Q. Roo, Mexico;1. LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France;2. LAAS-CNRS, Université de Toulouse, CNRS, Toulouse, France;1. Unité de Recherche Appliquée en Energies Renouvelables, URAER, Centre de Développement des Energies Renouvelables, CDER, 47133, Ghardaïa, Algeria;2. LER Laboratory, Faculty of Sciences and Technology, University of Jijel, P.O. Box 98 Ouled Aissa Jijel, 18000, Algeria;3. University of Jijel, Faculty of Sciences and Technology, Department of Electrical Engineering, P.O. Box 98 Ouled Aissa Jijel, 18000, Algeria |
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| Abstract: | A hybrid power system consists of a fuel cell and an energy storage device like a battery and/or a supercapacitor possessing high energy and power density that beneficially drives electric vehicle motor. The structures of the fuel cell-based power system are complicated and costly, and in energy management strategies (EMSs), the fuel cell's characteristics are usually neglected. In this study, a variable structure battery (VSB) scheme is proposed to enhance the hybrid power system, and an incremental fuzzy logic method is developed by considering the efficiency and power change rate of fuel cell to balance the power system load. The principle of VSB is firstly introduced and validated by discharge and charge experiments. Subsequently, parameters matching of the fuel cell hybrid power system according to the proposed VSB are designed and modeled. To protect the fuel cell as well as ensure the efficiency, a fuzzy logic EMS is formulated via setting the fuel cell operating in a high efficiency and generating an incremental power output within the affordable power slope. The comparison between a traditional deterministic rules-based EMS and the designed fuzzy logic was implemented by numerical simulation in three different operation conditions: NEDC, UDDS, and user-defined driving cycle. The results indicated that the incremental fuzzy logic EMS smoothed the fuel cell power and kept the high efficiency. The proposed VSB and incremental fuzzy logic EMS may have a potential application in fuel cell vehicles. |
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| Keywords: | Fuel cell vehicles Hybrid fuel cell/battery power system Variable structure battery (VSB) Incremental fuzzy logic energy management Maintain efficiency and lifespan |
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