Within the framework of inductive technology, this master’s thesis represents the conclusion of several previous projects that pursuit a common objective, to design and develop an inductive wireless power transfer system based in resonant converters. Together with the research and development of the previous projects, this thesis describes the last tasks implemented in order to perform the construction and set up of a 44 kVA charger with an efficiency of 90%. The grid power supply is modulated by means of a power inverter switching at frequencies up to 500 kHz. A method to recognise the ideal switching frequency has been designed and implemented. Two different coil systems have been tested, one with high coupling coefficient and another with good behaviour under deviation conditions. The track tuning consists of two capacitors modules, each connected in series with their respective induction coil. In all tests a DC resistor has been used as a system’s load.