Approved
Numerical Calculations of Wireless Power Transfer Coil Parameters
Jonatan Nyström (2014)
Start
2019-01-15
Presentation
2019-06-11 14:45
Location:
E:2311
Finished:
2020-06-16
Master's thesis:
Abstract
In recent years, the Qi Specification has emerged as the dominant standard for inductive wireless charging of small devices, especially smartphones. To support the ongoing research and development of Qi-based WPT systems, it is important to develop numerical algorithms that can calculate coil parameters in a numerically efficient manner. Existing literature mostly focuses on deriving closed form expressions for mutual inductance using elliptical integrals, which is only feasible for some standard coil geometries and ideal scenarios (e.g., infinitely large lossless ferrite layers). The main advantage of this analytical approach is fast calculations. On the other hand, sophisticated electromagnetic solvers can predict not only the mutual inductance of a limited number of configurations, but all coil parameters of interest for arbitrary and non-ideal coil configurations. However, the downside is that such simulations are usually very time consuming. In this context, this project aims to generalized the analytical approach with fast calculation to handle more realistic configurations traditionally handled by electromagnetic solvers.
Supervisor: Laurens Swaans (nok9 AB) and Buon Kiong Lau (EIT)
Examiner: Mats Gustafsson (EIT)