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Technical Dialogue

Winding Techniques

D09.6 - Optimal Design of Inductors with Aluminum Litz Wire for Inductive Power Transfer Systems

Thursday, March 20, 2025
11:30 AM – 1:30 PM ET
Location: Level One, Hall A3
This work presents a design method for magnetic couplers with aluminum litz-wire for wireless vehicle chargers. This alternative is considered due to its potential benefits, as weight and cost savings. The work not only proposes the replacement of copper wire with aluminum but also optimizes the cable parameters to obtain the number of strands that maximize the efficiency of the inductive link. Optimization considers the product of the magnetic coupling and the quality factor as the figure of merit. The performance of a prototype of 12 kW is evaluated and compared with a conventional copper litz-wire implementation.