METHOD AND DEVICE FOR RIBBLE VOLTAGE REDUCTION IN A VEHICLE BORDNET NETWORK

摘要

The invention relates to a method for reducing ripple voltages and / or ripple currents in a vehicle electrical system supplied by a DC voltage, which has a plurality N of inverters with electrical consumers connected thereto on the output side. By means of the N inverters, one or more output voltages and / or output currents are generated for supplying the consumers, for which each of the inverters, the DC voltage or a current supplied thereby by switching electronic switching elements between each a first and a second electrical state periodically in time each modulated by a arranged in Tastperioden clock signal, so that each of the inverters has a reciprocal of the duration of a sampling period of its clock signal corresponding clock frequency. The sampling periods and phases of the N clock signals are configured such that the resulting clock frequencies of the at least two inverters at least substantially coincide and their sampling periods are shifted in phase from one another by a predetermined phase shift value. The invention further relates to an electric vehicle electrical system that is configured to carry out the method.