@inproceedings{Seliger2023, author = {Seliger, Norbert}, title = {A Differential Relaxation Half-Bridge Oscillator for Inductive Power Transfer}, booktitle = {Proceedings PCIM Europe 2023}, publisher = {Mesago GmbH}, address = {N{\"u}rnberg}, institution = {Fakult{\"a}t f{\"u}r Ingenieurwissenschaften}, pages = {7}, year = {2023}, abstract = {We present inductive power transfer (IPT) with a half-bridge converter based on differential relaxation self-oscillation. The oscillation dynamics of the converter automatically adapts to variation in the inductive coupling link and changes in the load, respectively. Design equations based on theoretical circuit analysis reveals a high power transfer efficiency (>90\%) for alteration of coupling distance in the strong coupling regime. A prototype system employing GaN-HEMTs confirms the theoretically predicted characteristics of the proposed circuit.}, language = {en} }