Energy Efficiency Analysis through Misalignment on New Design of Hexagonal Coil Array in Wireless Power Transfer

Abstract

Nowadays, the transportation changes are happening in the Electric Vehicle (EV). Changes are made from cable to Wireless Power Transfer (WPT) as a solution. Current state of the implementation, there is still a misalignment on Power Transfer Efficiency (PTE) because of parking behavior. To overcome the problem, we propose new coil design for better optimization of the PTE. In addition, the new design has better size reduction of receiver (Rx) coil. Our experimental research is about to simulate Rx and transmitter (Tx) designs in simple and small scale of parking situations. The results show that an incremental PTE in the center of the coil, an incremental PTE during misalignment on a radius array, and an incremental PTE during misalignment tangential boundary. We conclude that overall better PTE is achieved compared to single coil design and circular coil arrays.

Improvement of power transfer efficiency of hexagonal coil arrays in misalignment conditions

“…Reactance, capacitor and resistor was measured using an LCR meter. Voltage and current using multi meter [30]- [31]. The resonant frequency was measured using the oscilloscope.…”