Wireless power transmission via inductive coupling using di/dt as the magnetic modulation scheme
First Claim
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1. A non-radio frequency carrier based wireless connector set for use in power transmission, comprising:
- a. a first connector, comprising;
i. a first transmission path adapted to be used with a power signal;
ii. a first transformer operatively connected to the first transmission path, the first transformer comprising a first inductance;
iii. a first alternating voltage source operatively connected to the first transformer, the first alternating voltage source adapted to operate at a first non-radio frequency power transmission frequency; and
b. a second connector adapted to be disposed in close proximity to the first connector, comprising;
i. a second transmission path adapted to be used with the power signal; and
ii. a second transformer operatively connected to the first transmission path, the second transformer adapted to be inductively and cooperatively coupled to the first transformer, the second transformer comprising a second inductance substantially equal to the first inductance.
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Abstract
The disclosed couplers operate in a “near field” mode, meaning energy, whether used to transmit data or power, is transferred through magnetic induction using a ∂i/∂t circuit (meaning a change in current over a change in time), such as by using inductive transmission and receive coils in which resistors and/or other components such as diodes are placed into series and/or in parallel with the coils and used to control the shape of the pulse, e.g. its voltage and/or frequency. In embodiments, the connectors are use to couple a power source to a power receptor.
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Citations
20 Claims
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1. A non-radio frequency carrier based wireless connector set for use in power transmission, comprising:
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a. a first connector, comprising; i. a first transmission path adapted to be used with a power signal; ii. a first transformer operatively connected to the first transmission path, the first transformer comprising a first inductance; iii. a first alternating voltage source operatively connected to the first transformer, the first alternating voltage source adapted to operate at a first non-radio frequency power transmission frequency; and b. a second connector adapted to be disposed in close proximity to the first connector, comprising; i. a second transmission path adapted to be used with the power signal; and ii. a second transformer operatively connected to the first transmission path, the second transformer adapted to be inductively and cooperatively coupled to the first transformer, the second transformer comprising a second inductance substantially equal to the first inductance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for electrical power transmission, comprising:
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a. a source of electrical power adapted to transmit power at a first power transmission frequency; b. a first connector operatively in communication with the source of electrical power, the first connector comprising; i. a first low impedance transmission path adapted to be used with an electrical power signal operating at a first frequency; ii. a first housing; iii. a first transformer operatively connected to the first transmission path at the low impedance and disposed at least partially within the housing, the first transformer comprising a first inductance; iv. a first tank circuit operatively connected to the first transformer and disposed at least partially within the first housing, the tank circuit comprising a capacitor connected in parallel with the first transformer; v. a first alternating voltage source operatively connected to the first transformer and disposed at least partially within the first housing; and c. a second connector separate from the first connector, the second connector comprising; i. a second low impedance transmission path adapted to be used with the electrical power signal operating at a frequency substantially the same as the first frequency; ii. a second housing adapted to cooperatively receive the first connector at a first coupled separation distance in close proximity to the first connector in a predetermined environment; iii. a second transformer operatively connected to the first transmission path at a low impedance and disposed at least partially within the second housing, the second transformer adapted to be inductively and cooperatively coupled to the first transformer, the second transformer comprising a second inductance; and iv. a second tank circuit operatively connected to the second transformer and disposed at least partially within the second housing, the tank circuit comprising a capacitor connected in parallel with the second transformer. - View Dependent Claims (11, 12)
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13. An electrical power connector system for use subsea, comprising:
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a. a selectively retrievable module, comprising; i. a first housing adapted for use subsea; and ii. a first connector disposed at least partially within the first housing, the first connector comprising; 1. a first low impedance transmission path adapted to be used with an electrical power signal operating at a first frequency; 2. a first housing; 3. a first transformer operatively connected to the first transmission path at the low impedance and disposed at least partially within the housing, the first transformer comprising a first inductance; 4. a first tank circuit operatively connected to the first transformer and disposed at least partially within the first housing, the tank circuit comprising a first capacitor connected in parallel with the first transformer; 5. a first alternating voltage source operatively connected to the first transformer and disposed at least partially within the first housing; and b. a module receiver adapted for use subsea, comprising; i. a second housing adapted for use subsea and dimensioned to cooperatively receive the first housing; and ii. a second connector adapted to be in close proximity to the first connector when the first housing is received into the second housing, the second connector comprising; 1. a second low impedance transmission path adapted to be used with the electrical power signal operating at a frequency substantially equal to the first frequency; 2. a second housing adapted to cooperatively receive the first connector at a first coupled separation distance in close proximity to the first connector in a predetermined environment; 3. a second transformer operatively connected to the first transmission path at a low impedance and disposed at least partially within the second housing, the second transformer adapted to be inductively and cooperatively coupled to the first transformer, the second transformer comprising a second inductance; and 4. a second tank circuit operatively connected to the second transformer and disposed at least partially within the second housing, the tank circuit comprising a second capacitor connected in parallel with the second transformer.
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14. A method of electrical power transmission, comprising:
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a. operatively connecting a first connector to a source of electrical power, the first connector comprising; i. a first low impedance transmission path adapted to be used with an electrical power signal operating at a first frequency; ii. a first transformer operatively connected to the first transmission path at the low impedance, the first transformer comprising a first inductance; iii. a first tank circuit operatively connected to the first transformer and disposed at least partially within the first housing, the tank circuit comprising a capacitor connected in parallel with the first transformer; and iv. a first alternating voltage source operatively connected to the first transformer; b. coupling the first connector to a separate second connector at a separation distance in a predetermined environment, the second connector adapted to cooperatively receive the first connector in close proximity to the second connector, the separation distance defining a near field communication distance where a magnetic field present at the first transformer is at a first predetermined strength and an electrostatic field present at the first transformer is at a second predetermined strength, the second connector comprising; i. a second low impedance transmission path adapted to be used with the electrical power signal operating at a frequency substantially the same as the first frequency; ii. a second housing adapted to cooperatively receive the first connector at a first coupled separation distance in close proximity to the first connector in a predetermined environment; iii. a second transformer operatively connected to the first transmission path at a low impedance and disposed at least partially within the second housing, the second transformer adapted to be inductively and cooperatively coupled to the first transformer, the second transformer comprising a second inductance; iv. a second tank circuit operatively connected to the second transformer and disposed at least partially within the second housing, the tank circuit comprising a capacitor connected in parallel with the second transformer; and c. sending electrical power from the source of electrical power through the first transformer and second transformer. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification