Single phase power supply for inductively coupled power transfer systems

摘要

An ICPT system has a single phase power supply which energises a conductive path (13) and has an inverter (5) to provide an alternating current at an operating frequency greater than the single phase utility supply frequency in the conductive path. The inverter modulates the amplitude of the alternating current with respect to the utility supply frequency such that the amplitude of the alternating current varies. The pick-up has an energy storage element (26) to provide a continuous supply of power to a load (27) irrespective of the varying amplitude of the alternating current in the conductive path.

主权项

1. An inductively coupled power transfer (ICPT) system comprising:
a conductive path; a pick-up adapted to receive power from the conductive path; a power supply to energize the conductive path, the power supply comprising a single phase input for receiving single phase electric power at a utility supply frequency and a converter to provide an alternating current at an operating frequency greater than the utility supply frequency in the conductive path and the converter modulating the amplitude of the alternating current with respect to the utility supply frequency such that the amplitude of the alternating current varies; wherein the pick-up comprises an energy storage element adapted to provide a continuous supply of power to a load supplied thereby irrespective of the varying amplitude of the alternating current in the conductive path; and wherein the power supply modulates the alternating current to vary in amplitude between substantially zero and a maximum value.