Method and apparatus for neutralizing stray current impulses
AssigneeMichel Montreuil
InventorMichel Montreuil
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Abstract
The attenuation of the stray current impulse limits the capacitive leakage. The value of the inductance, coupled to the parasitic capacitance of the charge, creates a reactive filter effect. Since the effect is reactive, the impulse energy is not absorbed. The energy is therefore redistributed in time, but since the intensity of the tension is greatly diminished, the coupling through the capacitances is diminished. The apparatus comprises a core which includes 1, 2, 3 or 4 coils. The apparatus is typically a high quality reactance which includes a low reactive value in opposition of the line current (residual mode) and a high reactive value for the circulation of the parallel current (common mode).
Claims13
A stray current attenuation device for attenuating a stray current impulse flowing through a ground return circuit in a proximity of an animal susceptible to be affected by said stray current impulse, comprising:
- an impedance having one coil for each power line at an input of an electrically conductive element, wherein all said coils are magnetically coupled via a common ferrite core, wherein said coils have a same number of windings and wherein a summation of ampere turns of said coils is equal to zero;
- said impedance being in series between the output of a power source and said electrically conductive element, said electrically conductive element being connected to said ground return circuit;
- whereby attenuation of the stray current impulse limits capacitive leakage which affects the animal and whereby an inductance of the impedance, coupled to a parasitic capacitance of the electrically conductive element, creates a reactive filter effect.
A method for attenuating a stray current impulse flowing through a ground return circuit in a proximity of an animal susceptible to be affected by said stray current impulse, comprising:
- providing an impedance having one coil for each power line at an input of an electrically conductive element, wherein all said coils are magnetically coupled via a common ferrite core, wherein said coils have a same number of windings and wherein a summation of ampere turns of said coils is equal to zero;
- connecting said impedance in series between the output of a power source and said electrically conductive element, said electrically conductive element being connected to said ground return circuit;
- whereby attenuation of the stray current impulse limits capacitive leakage which affects the animal and whereby an inductance of the impedance, coupled to a parasitic capacitance of the electrically conductive element, creates a reactive filter effect.
Dependencies are inferred from the claim text.