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Wireless Electric Vehicle Battery Charging System using PV Array
Objectives: Wireless Power Transfer (WPT) technology is developing rapidly in Electrical Vehicle applications. Along with WPT, the benefits of Photovoltaic (PV) array are exploited and a system is proposed for extracting the power from PV array to charge the Electric Vehicle (EV) battery through Series-Series compensated network in WPT mode. Methods/Analysis: Recently, resonance phenomenon is widely used in transferring power efficiently to the load over a large air gap. Since, various reactive components contribute to resonance, there are many resonating frequencies. Hence, a frequency analysis of series-series compensator is carried out. The proposed system is simulated in Powersim (PSIM) software and the experimental set up has been built and tested in the laboratory. Findings: Frequency analysis of the proposed system helps in identifying the operating frequency at which the resonance with unity voltage gain is achieved irrespective of load variations in Series-Series wireless power transmission systems. Both simulation and experimental results are furnished in this paper for validating the proposed system. Applications/Improvements: As the power transfer is in wireless mode, the proposed system can be used in any climatic conditions for charging the EV. Also, closed loop controllers can be developed for improving the performance of the proposed system.
Electric Vehicle Battery Charger, Inductive Coupled Power Transfer, Photovoltaic, Series-Series Compensation, Wireless Power Transfer.
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