A new hollow solenoid receiver compatible with the global double-D transmitter for EV inductive charging

Abstract

Inductive power transfer (IPT) technology is a promising solution for charging the electric vehicles (EVs) by enabling an EV to charge its energy storage system (battery) without any connecting wires through magnetic coupling. This paper proposes a new receiver design named Hollow Solenoid receiver that is compatible with the standard double-D transmitter defined by the SAE J2954 standard. A deep design analysis for the proposed Hollow Solenoid receiver is presented to define the optimum design parameters for coil (inductances, number of turns, dimensions, wires, etc.) and ferrite core (dimensions, number, arrangement, etc.). Several WPT3 (11.1kVA) solenoid receiver (SR) designs were presented and analyzed based on efficiency, weight, size, volume, and cost. The performance of the proposed SR was compared with the global Double-D receiver (DDR) presented by the SAE J2954 standard under different lateral and rotational alignment and loading conditions considering coupling factor, transmission power and efficiency, and stray electromagnetic fields (EMFs). The entire IPT system including coils, compensation network, power converters, controls, and battery load was modeled and analyzed for both SR and DDR coils. The results reveal that the proposed SR is compatible with the global DD transmitter at different alignment and loading conditions and is able to transmit the desired power (11 kW) at an efficiency > 85%. Hollow SR design shows the highest efficiency and lowest size, weight, and cost compared to DDR and other designs.

Enhancing electric vehicle charging performance through series-series topology resonance-coupled wireless power transfer

“…Despite advancements, the current state of WP transfer for EVs faces a significant challenge: the decoupling of board design and power electronics design. A holistic approach recognizing the interplay between primary coil parameters and overall structure effectiveness is crucial for advancing efficient and integrated WPT solutions [ 20 , 21 ]. Several global demonstrations and pilot projects involving dynamic wireless power transfer (DWPT) have been undertaken by researchers, vehicle manufacturers, and energy companies.…”

Assemblies of Coaxial Pick-Up Coils as Generic Inductive Sensors of Magnetic Flux: Mathematical Modeling of Zero, First and Second Derivative Configurations

“…Assemblies of PUCs are employed in both scalar and vector configurations in, among other scientific and engineering disciplines, physics/materials science (e.g., to record the AC magnetic susceptibility of materials) [2][3][4][5][6], electrical/electronic engineering (e.g., to control the trajectory and focus electron beams, to harvest stray energy from the environment, etc.) [7][8][9][10], geophysics (e.g., to survey anomalies in Earth's magnetic field, to record the AC magnetic susceptibility of natural materials, etc.) [11][12][13], aerospace (e.g., to survey the magnetic field and sense the attitude, to investigate magnetospheric plasma physics, etc.)…”