Uncertainty Quantification for SAE J2954 Compliant Static Wireless Charge Components

Abstract

The present work aims at quantifying how, and how much, the uncertainties on the components and material parameters of a wireless power transfer (WPT) system for the static charge of electric vehicles affect the overall efficiency and functionality of the final produced device. With the aim of considering the perspective of a possible industrial developer, the parameters selected for the uncertainty quantification are chosen to be the capacitance values of the compensation capacitors and the electromagnetic material parameters used for the construction of the magnetic structure of a WPT system, i.e. the parameters of the elements to be purchased. The analysis is based on a standard system among the ones provided by the current SAE J2954 recommended practice.

A Review of Bidirectional On-Board Chargers for Electric Vehicles

“…Honda also presented its wireless V2G concept with wireless charging specialist WiTricity in 2019, which combines the WPT and bidirectional power transfer function. Moreover, SEA 2954 offers standard guidelines of WPT industry specifications [158]. WPT theory for EVs has been widely studied in the research field.…”

“…SWC avoids the shock hazard of wires and metal and can be charged at a convenient location like home garages or parking lots. The control strategies like variable frequency and fixed frequency are presented to improve the operating efficiency in [158], [159]. Some structures and shapes of the coil are proposed in [158], [160] for better robustness, cost-effectiveness, and minimization of the stray magnetic field.…”

Review of Contactless Energy Transfer Concept Applied to Inductive Power Transfer Systems in Electric Vehicles

“…IPT systems could be operated in static, car parks mode [51][52][53][54][55][56][57] or when running [49,[58][59][60][61][62][63]. The dynamic mode, yet more complex in its functioning control and the necessity for particular infrastructures, presents the opportunity of beating the obstacles correspond to the weighty battery storage aboard, the lengthy charging period and the restricted autonomy in the static mode.…”

“…The ICT two coils with their ferrites in the situation of Figure 2 are identical with an air gap (d), and axes shift (sh) which corresponds to the EV position on the ground. These two parameters are directing the design and the performance of couplers [51][52][53][54][55][56][57].…”

“…Expressions characterizing the behavior and permitting the design and optimization of IPT systems as well as equivalent circuits involving the ICT features and the resonance topology for a specific compensation could be found in many references for both of IPT systems, the static one, e.g., [51][52][53][54][55][56][57] and the dynamic one, e.g., [49,[58][59][60][61][62][63].…”