Integrated DC link inductor and common mode current sensor winding
First Claim
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1. An apparatus, comprisinga core having at least two primary legs and at least one secondary leg;
- two direct current (DC) link windings each wrapped around one of the two primary legs; and
a current sensor winding wrapped around the secondary leg.
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Abstract
An integrated DC link inductor and current sensor winding having a core that includes at least two primary legs and at least one secondary leg, two direct current (DC) link windings each wound around one of the two primary legs, and a common mode current sensor winding wound around the secondary leg. Resistors coupled to the common mode current sensor winding may damp the common mode current oscillations.
33 Citations
20 Claims
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1. An apparatus, comprising
a core having at least two primary legs and at least one secondary leg; -
two direct current (DC) link windings each wrapped around one of the two primary legs; and a current sensor winding wrapped around the secondary leg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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receiving, in a core, magnetic flux induced by differential mode currents in a positive current path and a negative current path through a DC link; receiving, in the core, resultant magnetic flux induced by a common mode current in the DC link, wherein the common mode current corresponds to a difference between magnitudes of the differential mode currents; and sensing the resultant magnetic flux. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method, comprising:
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disposing a pair of DC link inductor windings about a common core; and disposing a winding of a common mode current sensor about the common core. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification