Apparatus and method for inductive power transfer
First Claim
Patent Images
1. An IPT system field extension device including:
- a first coil adapted to receive energy from a magnetic field associated with a primary conductive path of an IPT system;
a second coil electrically connected to the first coil and provided remote from the first coil, and being adapted to produce a magnetic field for supply of electrical energy to a pick-up of an IPT system; and
a tuning capacitance provided in series or parallel with the first and second coils to enable the circuit so formed to have a desired resonant frequency.
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Abstract
Apparatus is disclosed for allowing an inductive power distribution system pick-up to be located at an extended distance from the system primary conductive path. The apparatus has an elongate housing (40) which has a first coil (14) at one end to receive energy from a magnetic field associated with the primary conductive path. A second coil (16) is provided at the other end of the housing and is electrically connected to the first coil to produce a magnetic field for the supply of electrical energy to the pick-up. The circuit formed by the two coils is tuned to have a desired resonant frequency.
54 Citations
42 Claims
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1. An IPT system field extension device including:
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a first coil adapted to receive energy from a magnetic field associated with a primary conductive path of an IPT system; a second coil electrically connected to the first coil and provided remote from the first coil, and being adapted to produce a magnetic field for supply of electrical energy to a pick-up of an IPT system; and a tuning capacitance provided in series or parallel with the first and second coils to enable the circuit so formed to have a desired resonant frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 38)
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17. An IPT system including:
- a primary conductor;
at least one pick-up coil capable of generating a voltage by magnetic induction form the primary conductor; an intermediate resonant circuit provided between the primary conductor and a pick-up coil, the intermediate resonant circuit including a first coil adapted to receive energy from a magnetic field associated with a primary conductive path of an IPT system, a second coil electrically connected to the first coil and being adapted to produce a magnetic field for supply of electrical energy to a pick-up of an IPT system, the first coil being provided adjacent to the primary conductive path, the second coil being provided adjacent to the at least one pick-up coil, and a tuning capacitance provided in series or parallel with the first and second coils to enable the circuit so formed to have a desired resonant frequency. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
- a primary conductor;
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37. A method of producing an IPT system field extension device, a method including steps of:
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providing a first coil; providing an elongate housing having an interior space; placing the first coil in the interior space to locate the first coil at or adjacent to one end of the housing; providing a second coil; placing the second coil in the interior space to locate the second coil at or adjacent to another end of the housing; filling the space between the housing and the coils with a filler material.
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39. An IPT field extension device substantially as herein described with reference to anyone of the embodiments shown in the accompanying drawings.
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40. An IPT system substantially as herein described with reference to anyone of the embodiments shown in the accompanying drawings.
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41. A method of producing an IPT system field extension of device substantially as herein described with reference to anyone of the embodiments shown in the accompanying drawings.
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42. A method of installing an IPT system substantially as herein described with reference to anyone of the embodiments shown in the accompanying drawings.
Specification