Method for inductive current transmission
First Claim
1. A method of inductive current transmission via at least one transmission coil subjected with electrical power by an amplifier, wherein the amplifier is operated in a zero voltage switching (ZVC) and zero current switching (ZCV) mode, wherein the amplifier is a class D amplifier, being readjusted by a sequence control, wherein the amplifier comprises a half bridge having two electronic switches, a series resonant circuit and two capacities allocated to the electronic switches, and further wherein the sequence control generates two square-wave signals that are phase-shifted by a half period for controlling the electronic switches and the pulse width is dimensioned such that a discharging capacity is discharged exactly when the following square-wave signal is present, and wherein, for a swing-out of the half bridge, the half bridge is short-circuited one-sidedly.
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Accused Products
Abstract
The invention relates to a method of inductive current transmission via at least one transmission coil subjected with electrical power by an amplifier, wherein the amplifier is operated in a zero voltage switching (ZVC) and zero current switching (ZCV) mode.
6 Citations
9 Claims
- 1. A method of inductive current transmission via at least one transmission coil subjected with electrical power by an amplifier, wherein the amplifier is operated in a zero voltage switching (ZVC) and zero current switching (ZCV) mode, wherein the amplifier is a class D amplifier, being readjusted by a sequence control, wherein the amplifier comprises a half bridge having two electronic switches, a series resonant circuit and two capacities allocated to the electronic switches, and further wherein the sequence control generates two square-wave signals that are phase-shifted by a half period for controlling the electronic switches and the pulse width is dimensioned such that a discharging capacity is discharged exactly when the following square-wave signal is present, and wherein, for a swing-out of the half bridge, the half bridge is short-circuited one-sidedly.
Specification