Experimental Validation of Bidirectional WPT System


Experimental Validation

A. Mohamed; A. Berzoy; O. Mohammed, “Experimental Validation of Comprehensive Steady-state Analytical Model of Bidirectional WPT System in EVs Applications,” in IEEE Transactions on Vehicular Technology , vol.PP, no.99, pp.1-1.

Flexible, automatic, reliable and safe charging and discharging system for electric vehicle (EV) and hybrid electric vehicle (HEV) is crucial in vehicle-to-grid (V2G) operation. The bidirectional inductive wireless power transfer system (BIWPTS) is ideal solution in this situation. With authentic power flow models for the BIWPTS in hand, designers and operators can predict, optimize and analyze the interaction performance between EV and the grid. Thus, this paper presents harmonics-based theoretical power-flow model for BIWPTS for charging and discharging EVs in V2G applications. The proposed model provides accurate estimation for the active and reactive power flow during V2G and grid-to-vehicle (G2V) modes. Moreover, the impact of the circuit losses and harmonics, due to the high frequency (HF) power inverters, on the power flow performance, is investigated. This effect is stated mathematically by four novel power flow criteria formulas. Also, new conditions for achieving maximum active and reactive power, and unity and zero power factor system operation, are developed. The sensitivity of the circuit performance to the variation of its parameters, has been studied. For validation purposes, computer-based model and experimental platform of BIWPTS for EV applications are developed and tested. The comparison between the theoretical, simulation and experimental results verified the proposed models and analysis.
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