An inductive power transfer system for wirelessly charging a battery with either half or double the nominal battery voltage for the same output power as well as a corresponding method

An inductive power transfer system, comprising a first power converter for converting an input to a first output, a second power converter for converting said input to a second output, a controller arranged for controlling said first power converter and said second power converter, a first set of magnetically coupled coils, wherein a first coil of said first set of magnetically coupled coils is connected to said first power converter for receiving said first output, a second set of magnetically coupled coils, wherein a first coil of said second set of magnetically coupled coils is connected to said second power converter for receiving said second output, rectifying means connected to said second coil of said first set of magnetically coupled coils and to said second coil of said second set of magnetically coupled coils, wherein said rectifying means are arranged for providing an output power to a battery, wherein said rectifying means are configured for either connecting said second coil of said first set of magnetically coupled coils and said second coil of said second set of magnetically coupled coils in series such that said second coils shares the same current for providing said output to said battery which nominal voltage is double, or connecting said second coil of said first set of magnetically coupled coils and said second coil of said second set of magnetically coupled coils in parallel for adding currents flowing through said second coils for providing said output to said battery which nominal voltage is half.