Rogowski current sensor which is fast and immune to voltage drifts
AssigneeSafran Electrical & Power
InventorLionel Cima
Life of this patent
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Abstract
An electric circuit for measuring a current flowing in a conductor comprising: 2×N coils, N being an integer greater than or equal to 2, connected in series together; and a common mode filtering element associated with each of the 2×N coils, each filtering element being placed in parallel with the associated coil and being able to accomplish common mode filtering of the 2×N coils, a core of the 2×N coils having a relative permeability less than 10, and among the 2×N coils, N coils being wound in a direction opposite to the winding direction of the N other coils.
Claims10
An electrical circuit for measuring a current flowing in a conductor comprising:
- 2×N coils, N being an integer greater than or equal to 2, connected in series together;
- and
- a common mode filtering element associated with each of the 2×N coils, each filtering element being placed in parallel with the associated coil and being able to accomplish common mode filtering of the 2×N coils,
- a core of the 2×N coils having a relative permeability less than 10, and among the 2×N coils, N coils being wound in a direction opposite to the winding direction of the other N coils.
Dependencies are inferred from the claim text.