| Abstract |
The zero-current switched class E converters are investigated for automotive wireless power transferinductive charging applications. In comparison to the class D converters, typically used for thisapplication, the class E converters have only one active switch on the primary-side of the inductiveenergy transfer coils and the resonant tank current magnitude is independent from the magnitude ofthe current in this active switch. The paper presents full details of the Class E2 converter analysesincluding converters with series and parallel resonant circuits and compares the two topologies. A fullsizeprototype converter has been built and tested to confirm theoretical predictions. The converterperformance is investigated, when operated with the required variation of the magnetic coupling,battery-voltage and output power level determined by the automotive charging application. |
