Self powered gate driver system
AssigneeRockwell Automation Technologies, Inc.
InventorsDavid Scott S. Maclennan, Kenneth Ronald Hilderley
Life of this patent
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Abstract
An apparatus and method used to charge a self powered gate driver system. The apparatus may include a current loop for inducing a current in a coil. A bridge rectifier may rectify the current induced in the coil and charge a capacitor used to power a driver in a self powered gate driver system. The current loop and coil may be separated by a dielectric to prevent current from passing between the self powered gate driver system and the current loop. The current loop may couple to a line voltage transformer to drive an alternating current through the current loop. In certain embodiments, a single current loop and transformer may charge a plurality of self powered gate driver systems.
Claims20
A system, comprising:
- a pre-charge circuit configured to couple to a first alternating current power source and charge components within a self powered gate driver system while preventing a current from flowing between the first alternating current power source and the self powered gate driver system;
- and
- at least one self powered gate driver system coupled to the pre-charge circuit, wherein the self powered gate driver system is configured to selectively couple a second alternating current power source and a load.
A system, comprising:
- a current loop configured to induce a current in a coil when carrying an alternating current from a first alternating-current power source;
- a plurality of coils coupled to the current loop;
- a dielectric disposed between each of the coils and the current loop;
- and
- a self powered gate driver system coupled to a second alternating current power source and to at least one of the coils.
A system, comprising:
- at least three self powered gate driver systems, wherein at least one self powered gate driver system is configured to selectively couple each phase of a three phase alternating current power source to a load;
- and
- a pre-charge circuit configured to couple to a first alternating current power source and charge components within the at least three self powered gate driver systems while preventing a current from flowing between the first alternating current power source and the at least three self powered gate driver systems, wherein the pre-charge circuit comprises:
- a transformer with an input and an output, wherein the input is coupled to the first alternating current power source;
- a current loop coupled to the output of the transformer and configured to induce a current in a coil;
- a layer of insulation disposed about the current loop;
- a sleeve disposed about the layer of insulation;
- a coil disposed about the sleeve;
- and
- a bridge rectifier with an input and an output configured to rectify an alternating current induced in the coil, wherein the input is coupled to the coil and the output is coupled to the self powered gate driver system.
Dependencies are inferred from the claim text.