Analysis of Parallel-Series Compensation Circuit for Wireless Power Transfer of Electric Vehicle Charging Based on Resonant

Resonant wireless power transfer is a way of transferring electricity that does not require a wire to connect the transmitting and receiving coils. A power electronics converter is present on both sides. On the transmitting side, a cascaded single phase full bridge inverter is connected to a resonant wireless power transfer circuit, which is fed through the grid and connected to a power factor correction rectifier to boost power factor or make up for reactive power in order to lower the amount of input VA required. A resonant wireless power transfer operates on the resonance principle, in which maximum power is sent wirelessly to the receiving side. A parallel series connection is employed in this resonant WPT circuit, one of four topologies based on how capacitance is connected: either in series or in parallel. When high power charging is needed, a resonant power transfer circuit is employed because it can send power over longer distances than inductive power transfer. The quality factors of the transmitting and receiving sides as well as the effective coupling factor of the coil all affect Resonant WPT's efficiency.