Wireless power transfer with tuning capacitor compensation for electric vehicle applications
by V.N. Pranathy; V. Indragandhi; Kiran Sathyan; V. Vijayakumar; Logesh Ravi; V. Subramaniyaswamy
International Journal of Vehicle Information and Communication Systems (IJVICS), Vol. 5, No. 4, 2020

Abstract: Nowadays, Electric Vehicles (EV) have a great advantage because of their environment-friendly nature. Charging of EV using Wireless Power Transfer (WPT) releases it from annoying wires. Based on the principle of inductive power transfer, the energy transfers from the primary coil to the secondary coil through loosely coupled coils. This paper presents a prototype design of the WPT system with a source, which is the grid. An ideal topology of a 6 kW system for EV wireless charging with Series-Parallel (SP) compensated tuning capacitors is designed. The SP capacitor compensation consists of tuning capacitors in both the primary and secondary side of power transmission. Maximum power transfer at the high-frequency resonant condition at the compensation mode is achieved by higher efficiency. The proposed system results are obtained and validated from the numerical analysis and simulated using Matlab/Simulink. Based on the block diagram representation and by state-space analysis, a more precise form of results is obtained - comparison of the four different compensation topologies showing the most significant form of SP capacitor compensation.

Online publication date: Fri, 27-Nov-2020

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