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Open AccessArticle

Photovoltaic Integrated Hybrid Microgrid Structured Electric Vehicle Charging Station and Its Energy Management Approach

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Department of Electrical and Electronics Engineering, SRM IST, Chennai 603 203, India
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Department of Electronics and Instrumentation Engineering, SRM IST, Chennai 603 203, India
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Center for Bioenergy and Green Engineering, Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark
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Center of Reliable Power Electronics (CORPE), Department of Energy Technology, Aalborg University, 9100 Aalborg, Denmark
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Authors to whom correspondence should be addressed.
Energies 2019, 12(1), 168; https://doi.org/10.3390/en12010168
Received: 18 November 2018 / Revised: 25 December 2018 / Accepted: 29 December 2018 / Published: 4 January 2019
A hybrid microgrid-powered charging station reduces transmission losses with better power flow control in the modern power system. However, the uncoordinated charging of battery electric vehicles (BEVs) with the hybrid microgrid results in ineffective utilization of the renewable energy sources connected to the charging station. Furthermore, planned development of upcoming charging stations includes a multiport charging facility, which will cause overloading of the utility grid. The paper analyzes the following technical issues: (1) the energy management strategy and converter control of multiport BEV charging from a photovoltaic (PV) source and its effective utilization; (2) maintenance of the DC bus voltage irrespective of the utility grid overloading, which is caused by either local load or the meagerness of PV power through its energy storage unit (ESU). In addition, the charge controller provides closed loop charging through constant current and voltage, and this reduces the charging time. The aim of an energy management strategy is to minimize the usage of utility grid power and store PV power when the vehicle is not connected for charging. The proposed energy management strategy (EMS) was modeled and simulated using MATLAB/Simulink, and its different modes of operation were verified. A laboratory-scale experimental prototype was also developed, and the performance of the proposed charging station was investigated. View Full-Text
Keywords: hybrid microgrid; battery electric vehicle; energy management strategy; vehicle-to-vehicle charging; energy storage unit hybrid microgrid; battery electric vehicle; energy management strategy; vehicle-to-vehicle charging; energy storage unit
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Savio, D.A.; Juliet, V.A.; Chokkalingam, B.; Padmanaban, S.; Holm-Nielsen, J.B.; Blaabjerg, F. Photovoltaic Integrated Hybrid Microgrid Structured Electric Vehicle Charging Station and Its Energy Management Approach. Energies 2019, 12, 168.

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