Performance Study of 13.56 Mhz Full-Bridge Inverter on Wireless Power Transfer System for Electric Vehicle Charging
DOI:
https://doi.org/10.5281/zenodo.17448266Keywords:
GaN MOSFET, LTspice, WPT, PWM, THD, Electric Vehicle ChargingAbstract
This research developed a series of GaN MOSFET-based full bridge inverters (TP90H050) with UCC27524 drivers for Wireless Power Transfer (WPT) applications of military vehicles, which are targeted to operate at the ISM frequency of 13.56 MHz. The LTspice simulation showed a potential for near-sinusoidal waves (THD<1%) and a power efficiency of ≈2.13 kW at 50Ω. However, the PCB prototype was only capable of stable operation up to 666.66 kHz with a clean box wave output, and separate tests on fourth-order LC–Butterworth filters achieved a sinusoidal signal with an efficiency of ≈75%. Failure analysis attributed MOSFET damage to switching path length, parasitic effects, and protection limitations. Significant differences were found between the simulation and the implementation at 666.66 kHz, where the hardware RMS voltage was only ≈33% of the simulation. Improvements going forward include the use of precision oscillators/DDSs, drivers with protective features (UVLO and active Miller-clamp), calibrated snubber, and closed controls
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Copyright (c) 2025 Meky Taba Orlando MT, Hery Sudaryanto, Iqbal Ahmad Dahlan, Aam Muharam (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
