Electrical energy-via-sound supply method for electrical load e.g. for current and voltage measurement in communal power supply equipment

摘要

An electrical energy supply method for at least one consumer (load) (41,42) is based on generation of an acoustic power signal (13) by a first acoustic converter (11) and transferring the acoustic power signal to a second acoustic converter (12) connected to the electrical load (41,42). The acoustic power signal is converted by the second acoustic converter (12) into an electric power signal (33) which is used to supply an electrical power of at least 10W and of up to 10 kW to the electrical load (41,42). The acoustic power signal (13) is generated as a periodic signal or as a burst-signal with a periodic burst-form, and is electrically isolated between the two converters (11,12) which operate at a different electrical potential (20,30).