High-Power Wireless Charging For EVs (Part 1): Understanding The Basics

Focus:

This short article explains the principles of operation for high-power wireless chargers in the range of 250 kW that are being developed for charging commercial EVs (including buses and trucks) and industrial equipment. The characteristics of power transfer in a wireless charger are compared and contrasted with those of a conductive or wired charger. In particular, the impact of the wide gap leading to poor coupling and high leakage inductance in high-power wireless chargers is discussed.

What you’ll learn:

• How to understand the principles of operation for high-power (250-kW) wireless EV chargers
• How to understand the impact of leakage inductance in high-power wireless EV charging

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Author & Publication:

Patrice Lethellier, WAVE, Salt Lake City, Utah, How2Power Today, Jan 16 2019

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