Coil arrangement with reduced losses and a stabilized coupling factor, and system for wireless power transfer

A system for wirelessly transferring electrical power, comprising:

• a primary coil arrangement;
• and
• a secondary coil arrangement with reduced losses and a stabilized coupling factor, wherein the secondary coil arrangement includes
• a coil core defining an axis, and
• a first winding, the turns of which are wound around the axis, wherein
• the turns are distributed over two or more sections and the two or more sections are spaced apart from one another;
• wherein the primary coil arrangement comprises a first primary coil section and a second primary coil section, the first primary coil section being wound around a first primary axis and the second primary section being wound around a second primary axis,
• wherein the first primary axis, the second primary axis, and the axis are different axes, and
• wherein the primary coil arrangement includes a double-D coil.