Transformer device utilizing an air gap for non-contact energy transmission from the primary side to the secondary side
First Claim
Patent Images
1. A transformer device comprising:
- a transformer having;
at least a primary side having a primary winding and a primary core;
at least a secondary side having a secondary winding and secondary core, wherein said secondary side is separated from the primary side by an air gap for transmission of electrical energy without electrical connection, and the primary side and secondary side are electrically and mechanically unconnected; and
a capacitor connected in series with the primary winding of the transformer,wherein the capacitor forms a resonant circuit together with a leakage inductance of the transformer,wherein the resonant circuit is connected to a frequency controllable current source and a feedback loop from a secondary side of the transformer,wherein the feedback loop includes the transformer and at least one first or second signal transformer in series with the transformer, andwherein the voltage at resonance from the secondary winding is higher than the voltage of the signal level into the series capacitor.
0 Assignments
0 Petitions
Accused Products
Abstract
A device and method for non-contact transmission of electrical energy by means of a transformer (1) comprising at least a primary side (2) and at least a secondary side (8), and where resonance is set up in a circuit comprising the primary winding (4) of the transformer (1) and a capacitor (14) connected in series with the primary winding (4).
-
Citations
6 Claims
-
1. A transformer device comprising:
-
a transformer having; at least a primary side having a primary winding and a primary core; at least a secondary side having a secondary winding and secondary core, wherein said secondary side is separated from the primary side by an air gap for transmission of electrical energy without electrical connection, and the primary side and secondary side are electrically and mechanically unconnected; and a capacitor connected in series with the primary winding of the transformer, wherein the capacitor forms a resonant circuit together with a leakage inductance of the transformer, wherein the resonant circuit is connected to a frequency controllable current source and a feedback loop from a secondary side of the transformer, wherein the feedback loop includes the transformer and at least one first or second signal transformer in series with the transformer, and wherein the voltage at resonance from the secondary winding is higher than the voltage of the signal level into the series capacitor. - View Dependent Claims (2, 3)
-
-
4. A method of non-contact transmission of electric energy by means of a transformer comprising at least a primary side and at least a secondary side separated from the primary side by an air gap, wherein the primary side and secondary side are electrically and mechanically unconnected, the method comprising the steps of:
-
setting up resonance in a circuit comprising the primary winding of the transformer and a capacitor connected in series with the primary winding, wherein the capacitor forms the resonant circuit together with a leakage inductance of the transformer, connecting the resonant circuit to a frequency controlled source of current and a feedback loop from a secondary side of the transformer, the feedback loop including the transformer and at least one first or second signal transformer in series with the transformer, wherein the voltage at resonance from the secondary winding is higher than the voltage of the signal level into the series capacitor. - View Dependent Claims (5, 6)
-
Specification