Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings
AssigneePower Integrations, Inc.
InventorChan Woong Park
Life of this patent
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Abstract
An energy transfer element having an energy transfer element input winding and an energy transfer element output winding. In one aspect, the energy transfer element input winding is capacitively coupled to the energy transfer element output winding. The energy transfer element is capacitively coupled to electrical earth. Capacitive displacement current between the energy transfer element input winding and energy transfer element output winding is substantially reduced by balancing the relative electrostatic fields generated between these windings and/or between the energy transfer element and electrical without any additional windings.
Claims24
An energy transfer element, comprising:
- an energy transfer element core;
- a first winding wound around the energy transfer element core, the first winding having a first end coupled to a first node and second end coupled to a second node;
- a second winding wound around the energy transfer element core, the second winding having a first end coupled to a third node and a second end coupled to a fourth node, the first winding capacitively coupled to the second winding;
- and
- a balancing portion included between the first node and the second node in the first winding wound around the energy transfer element core to reduce substantially a capacitive displacement current flowing between the energy transfer element and electrical earth.
An energy transfer element, comprising:
- an energy transfer element core;
- a first winding wound around the energy transfer element core, the first winding having a first end coupled to a first node and second end coupled to a second node;
- a second winding wound around the energy transfer element core, the second winding having a first end coupled to a third node and a second end coupled to a fourth node, the first winding capacitively coupled to the second winding;
- and
- a balancing portion included between the first node and the second node in the first winding wound around the energy transfer element core to reduce substantially a capacitive displacement current flowing between the first and second windings.
Dependencies are inferred from the claim text.