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USU researchers at ASPIRE NSF Engineering research center are developing power electronic systems including wireless charging systems to increase EV charging accessibility. EV wireless charging systems include two charging coils, one on the ground and one on the bottom of the car. Current is driven through the charging coil as a car drives over the top of or parks on top of this coil. High current creates a magnetic field which induces current in the car coil. The alternating magnetic fields can charge the car as the car is simply parked on the top of this coil. Designing a wireless charging system requires determining many many variables based on certain constraints. These including the shapes and size of both the primary and secondary coils, the AC-DC circuit design, and the power circuit detuning in the case where connection to the car motor is broken. This research provides an introduction about how a wireless charging system is designed using an iterative process and multiple computer software and simulations tools. Specifically, this research discusses the design of a small-scale wireless charging system that will be used in school demonstrations to help junior high and high school students learn hands on about the engineering design process.

Publication Date



Logan, UT


electric vehicles, wireless charging, accessibility, magnetic fields


Electrical and Computer Engineering

Designing an Electric Vehicle Wireless Charging System