AN ELECTRIC POWER SYSTEM AND A METHOD OF TRANSMITTING ELECTRIC POWER FROM A POWER SOURCE TO A DEVICE VIA A SINGLE-WIRE ELECTRIC WIRE
20210203188 · 2021-07-01
Inventors
Cpc classification
H02J3/34
ELECTRICITY
International classification
Abstract
An electric power system is provided. The system is powered by power source that is connected to a frequency converter. The converter is connected via a circuit to a distributive switch that has an input and an output and to an element that is configured to store electric energy. The output is connected to a first electric wire at its first end. The second end of the first wire is connected to a first reflective element. A first device is connected to the first electric wire between the first and the second ends. A second electric wire is connected to the output at one end and the other end is connected to a second reflective element. The frequency converter is configured to transform a current generated by the power source into an increased frequency AC current for powering the first device. A method of operating the system is also provided.
Claims
1. An electric power system comprising: a power source, a frequency converter conductively connected to the power source, a distributive switch having an input and an output, an element being configured for storing electric energy, a circuit conductively connecting the frequency converter, the element and the distributive switch, a first electric wire having a first end conductively connected to the at least one output, and a second end conductively connected to a first reflective element, a first device conductively connected to the first electric wire between the first end and the second end, a second electric wire having a third end and a fourth end, the third end being conductively connected to the output and the fourth end being conductively connected to the second reflective element, and the frequency converter being configured to transform a current generated by the power source into an increased frequency AC current for powering the first device.
2. The electric power system of claim 1, wherein the first reflective element includes any of an unconnected wire-end of the at least first electric wire, a capacitor, an object comprising a conductive material, a ground, and an insulation of the second end, and the second reflective element includes any of an unconnected wire-end of the at least second electric wire, a capacitor, an object comprising a conductive material, a ground, and an insulation of the fourth end.
3. The electric power system of claim 1, further comprising a second device conductively connected to the second wire between the third end and the fourth end.
4. The electric power system of claim 3, wherein any of the first device and the second device includes any a light source, a sound source, a electromechanical powered device, and a electromagnetically powered device.
5. The electric power system of claim 3, wherein the first device includes a plurality of first devices and the second device includes a plurality of second devices.
6. The electric power system of claim 5, wherein any of the plurality of first devices and the plurality of second devices includes any of light sources, sound sources, electro-mechanical powered devices, and electromagnetically powered devices.
7. The electric power system of claim 5, wherein any of the plurality of first devices and the plurality of second devices includes any of a plurality of light emitting diodes, a plurality of gas lamps, or a plurality of incandescent lamps, a plurality of compact fluorescent lamps, a plurality of halogen lamps, a plurality of metal halide lamps, a plurality of fluorescent tubes, a plurality of neon lamps, a plurality of high intensity discharge lamps, and a plurality of low pressure sodium lamps.
8. The electric power system of claim 5, wherein a first set of the plurality of first devices is conductively connected in a sequence to the first electric wire.
9. The electric power system of claim 5, wherein a second set of the plurality of first devices is conductively connected in parallel to the first electric wire and the second end includes a plurality of second ends.
10. The electric power system of claim 5, wherein a third set of the plurality of first devices includes two light emitting diodes conductively connected to the first electric wire in antiparallel.
11. The electric power system of claim 1, wherein the element includes any of a capacitor and a resonant contour.
12. The electric power system of claim 1, wherein the increased frequency AC current in a range between 1 kilohertz and 1 megahertz.
13. The electric power system of claim 1, wherein the first device is powered when the system is operating close to a resonant mode.
14. The electric power system of claim 1, further comprising a third electric wire conductively connected to the output and a fourth electric wire conductively connected to the output.
15. The electric power system of claim 1, wherein the distributive switch is a transformer.
16. The electric power system of claim 15, wherein the transformer is an impedance-matching transformer.
17. A method of operating an electric power system, the method comprising: receiving a current from a power source, converting the current into an increased frequency AC current, the increased frequency AC current being in a range of 1 kilohertz and 1 megahertz, storing a first portion of an electric energy of the system in a circuit conductively connected to an element, transmitting the increased frequency AC current from the circuit to a first end of a first electric wire, and to a third end of a second electric wire, reflecting a first portion of the increased frequency AC current from a second end of the first electric wire, reflecting a second portion of the increased frequency AC current from a fourth end of the second electric wire, operating the system close to a resonant mode, and powering by the increased frequency AC current a first device, the first device being conductively connected to the first wire between the first end and the second end.
18. The method of operating an electric power system of claim 17, further comprising a step of powering the first device by the first reflected portion of the increased frequency AC current.
19. The method of operating an electric power system of claim 17, wherein converting the current into the increased frequency AC current, includes the steps of determining a resonant frequency of the system, and converting the current from the power source into a resonant frequency AC current, the resonant frequency AC current being within 40% of the resonant frequency of the system.
20. The method of operating an electric power system of claim 17, wherein powering the first device includes powering the first device by a combination of any of a longitudinal current, a standing electromagnetic wave, a travelling electromagnetic wave, a displacement current, recharge current, or electromagnetic vertices.
21. The method of operating an electric power system of claim 17, wherein powering the first device includes powering any of a plurality of light sources, sound sources, electro-mechanical powered devices, or electromagnetically powered devices powering an at least one second device by at least the portion of the increased frequency AC current.
22. The method of operating an electric power system of claim 17, further comprises powering a second device by the increased frequency AC current transmitted via the second electric wire.
23. The method of operating an electric power system of claim 22, further comprises a step of powering the second device by the second reflected portion of the increased frequency AC current.
24. The method of operating an electric power system of claim 17, further comprises the step of setting up the system close to the resonant mode by determining the resonant frequencies of any of the system and the circuit.
25. The method of operating an electric power system of claim 17, further comprises the steps of correcting the increased frequency AC current based on receiving data from any of the element, the circuit, frequency converter, the first electric wire, the first device, and sensors connected to the system.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0062] For a better understanding of the present technology, as well as other aspects and further features thereof, reference is made to the following description which is to be used in conjunction with the accompanying drawings, where:
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DETAILED DESCRIPTION
[0081] Referring to
[0082] The system 100 comprises a power source 1. The power source 1 is may be typically associated with a DC or an AC power source (not depicted), and may be a conventional power source stemming from conventional electric lines, whether indoor, outdoor, industrial, home-systems, batteries, and the like. It should be noted that the fact that the power system 1 is associated with any type of power source does not need to suggest or imply any mode of operation other than providing electric power to the system.
[0083] The system 100 further comprises a frequency converter 2, an element 4, a distributive switch 6, all of which are conductively connected to via the circuit 3. The implementation of the circuit 3 with the electric components connected thereto is not particularly limited, but as an example, the frequency converter 2, the element 4 and the distributive switch 6 are shown to be connected in a series, whoever, they may be connected in parallel or in a combination of series and parallel. It is understood that there may be several frequency converters 2, several elements 4 and several distributive switches 6, depending on the requirements of the system 100.
[0084] The frequency converter 2 converts the electric energy, that it receives from the from the power source 1, into an increased frequency AC current. An industrial standard electric energy may be, for example, a one or three phases 50 or 60 Hertz AC current that may be generated by the power source. The increased frequency AC current may be anywhere between 1 kilohertz and 1 megahertz. The illustrative purposes only, the frequency converter 2 may convert the electric energy into a 10 to 60 kilohertz frequency AC current. For example, the frequency converter 2 may consist of an active rectifier with a power factor correction (PFC) function and an output stage that may be assembled on gallium nitride transistors capable of operating in soft and hard switching modes (not depicted). The output stage may be controlled by a microcontroller. The developed power may be up to 2 kW. The voltage swing at the output of the frequency converter may correspond to the PFC voltage and may be 400 V. Other implementations of the frequency converter 2 are possible as may be appreciated by a person skilled in the art.
[0085] The element 4 is a shown for illustrative purposes as an independently connected component of the circuit 3. However, in some implementations of the present technology, the element 4 may be part of the frequency converter 2, as shown in
[0086] In several experiments, the distributive switch 6 was selected from a set of different types of transformers (
[0087] In several experiments, the distributive switch 6 was selected from a set of isolating transformers, in some cases that acted as impedance-matching transformers with a toroidal core, with external diameters that varied between 20 and 56 mm, and heights that varied between 10 and 350 mm (not depicted). Some of those transformers had one input and one output winding, others had several input and several output windings (not depicted). It is understood that it is possible to select any suitable dimensions and any the type of a transformer for the distributive switch 6, depending of the requiems of the system 100, based on the requiems of a specific use case. In some experiments, the isolating transformer had identical input and output windings. The windings were selected from a set of copper wires varying in diameters between 0.5 and 10 mm. The number of turns of the windings varied between 10 and 100. In experiments, where the windings were identical, the transformation coefficient of the transformer was 1. In experiments, where the windings were not identical, the transformation coefficient of the transformer varied depending on the requirements of the system 100 in each particular use case.
[0088] The circuit 3 with the components connected thereto, particularly, the frequency converter 2, the element 4 and output 5 of the distributive switch 6 are all connected in a circuit and at least one of these components acts as a resonant circuit. In some literature, the resonant contour is described as “resonant LCR circuits”, “resonance in AC circuits”, “resonant contour”, “LC circuit”, “resonant circuit” or the like. It is understood that in this specification the meaning of the term “resonant contour” is not limited to any particular arrangement of electric components, rather it is associated with the possibility of the system 100 to enter resonant mode, such that the circuit 3 and the electric components connected thereto will store a significant enough portion of the electric energy of the system 100 to keep the system 100 stable when it is in operation.
[0089] In the context of the present technology, the resonant frequency of the resonant contour may be calculated as:
where L is the total loop inductance (L.sub.i and L.sub.T), where L.sub.i—is the inductance of the inductor and L.sub.T is the inductance of the transformer, C is the capacitance of the capacitor. The resonant contour of the circuit 3 acts as an intermediary electric energy storage that is used to determine the resonant frequency of the system 100, in order to operate the system 100 in resonant mode. In some implementations of the present technology, it is possible to operate the system 100 close to the resonant frequency of the resonant contour of the circuit 3.
[0090] The system 100 further comprises a first electric wire 8 and a second electric wire 11. The electric wires 8 and 11 are single-wire electric wires that have their respective first end 9 and third end 12 connected to the output 7 of the distributive switch 6. The distributive switch 6 is represented as a transformer and is depicted as having an input winding at its input 5 and an output winding at its output 7. The first end 9 and the third end 12 are connected to output windings of the output 7 of the distributive switch 6. The first wire 8 has a second end 10, which is does not form a closed-loop circuit, i.e. it remains unconnected from the circuit 3 and any of its components. The second end 10 is connected to a first reflective element 14. The second wire 11 has a fourth end 13, which is does not form a closed-loop circuit, i.e. it remains unconnected from the circuit 3 and any of its components. The fourth end 13 is connected to a second reflective element 15.
[0091] The first and second reflective elements 14 and 15 respectively may be any of the following: an unconnected wire-end itself, a capacitor, an object comprising a conductive material, a ground, or an insulation of the ends of the first or second wires 8 and 11 respectively. As shown in
[0092] In some embodiments, the first and second reflective elements 14 and 15 may be similar, however, it is not required. For example,
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[0104] In an embodiment of the system 100 may that consists of a power source 1, a frequency converter 2, a distributive switch 6, which is a transformer, an element 4, and m (where m=2, 4, 6, 8, etc.) single-wire electric wires, and k (where k=2, 4, 6, etc.) devices connected to the m single-wire electric wires. The devices may be a plurality of light sources. The transformer may have n (where n=2, 3, 4, 5) windings. The windings may be identical or may have similar technical characteristics. The input winding of the transformer may be connected in series via a circuit to a frequency converter and a resonant contour. Each of the n−1 transformer output windings is connected to a pair of single-wire electric wires, for example, to the first and second electric wires 8 and 11 respectively. The single-wire electric wires, first and second wires 8 and 11, are stretched away from the transformer output winding, the output 7, such that no electric energy passes from the first wire 8 to the second wire 11 and vis-versa.
[0105] When the system 100 is in operation, the power source 1 send a current to the frequency generator 2. The current may typically be an AC current from a conventional electricity outlet. The frequency convert 2 converts that current into an increased frequency AC current that is in the range of 1 kilohertz and 1 megahertz. The element 4 of the circuit 3 acts as a resonant contour, i.e. if the element 4 is composed of an at least one a capacitor and an inductor, and stores at least a portion of the electric energy of the system 100. The increased frequency AC current is then transmitted to the first end 9 of the first wire 8 and to the third end 12 of the second wire 11, which then travels via the first and the second wires 8 and 11 towards the second and the fourth ends 10 and 13 respectively. When the increased frequency AC current reaches the second and the fourth ends 10 and 13, it is reflected into the first and the second wires 8 and 11 respectively and travels back to the first end 9 and to the second end 12. When at least one first device 16 is connected to the first wire 8 between the first and second ends 9 and 10, the increased frequency AC current produces work, i.e. electricity is transmitted to the first device 16, thus powering the first device 16. When at least one second device 17 is connected to the second wire 1 between the third and the fourth ends 12 and 13, the increased frequency AC current produces work, i.e. electricity is transmitted to the second device 17, thus powering the second device 17. As the first and the second wires 8 and 11, and the first and second reflective elements 14 and 15 have a capacitance, the system 100 enters a resonant mode once the resonant frequency of the system 100 is reached, i.e. the increased frequency AC current is close to or at the resonant frequency of the system 100. While the system 100 is not yet in resonant mode, the frequency converter 2 may apply several different AC frequencies to determine the frequency closest to resonant frequency of the system 100. There may also be a number of sensors connected different components of the system 100 (not depicted) that may send data to a microprocessor (not depicted) that may be connected to the frequency converter 2 or to any other suitable component of the system 100. This data may be used to help determine the resonant frequency of the system 100. In cases, when there may be several resonant frequencies of the system 100, the microprocessor or the frequency converter 2 will select the most suitable resonant frequency for the increased frequency AC current. Typically, the frequency converter 2 will convert the current from the power source 1 into an increased frequency AC current that is within 40% of the resonant frequency of the system. For example, if the resonant frequency of the system 100 is f, then the increased frequency AC current may be anywhere from −40% to +40% of f.
[0106] It is contemplated that the devices connected to the single-wire electric wires, for example, the first and the second devices 16 and 17 may be powered at least in part by a combination of any of a longitudinal current, a standing electromagnetic wave, a travelling electromagnetic wave, a displacement current, recharge current, or electromagnetic vertices. The present technology does not preclude that the first and the second devices 16 and 17 may be powered directly by the increased frequency AC current. In fact, the present technology is not limited to any explanation of the electro-magnetic phenomena that may be taking place within the single-wire electric wires, for example, the first and the second wires 8 and 11 respectively.
[0107] In some cases, it may be possible that the system 100 may stop operating close or in resonant mode due to external environment acting on the system 100. In such cases, the system 100 may have a microprocessor and sensors that will act upon the frequency converter 2 to correct the increased frequency AC current based on the data from any component of the system, including the element 4, the circuit 3, frequency converter 2, the first electric wire 8, the first device 16, or other electric components connected to the system 100.
[0108] The system 100 may be used to power various devices, such as personal computer (desktops, laptops, netbooks, etc.), a wireless electronic device (a cell phone, a smartphone, a tablet and the like), as well as network equipment (a router, a switch, or a gateway), lighting systems, appliances, change batteries, etc.
[0109] The system 100 may comprise hardware and/or software and/or firmware (or a combination thereof) to execute a number of operations that may aid the proper functioning of the system 100.
[0110] How the element 4, the circuit 3, the frequency converter 2, the distributive switch 6, the single-wire electric wires, such as the first wire 8, the second wire 11, the third wire 21 or the fourth wire 22, the capacitors 200, 201, or 202, the inductors 203 or 204, or the pluralities of first, second, third, fourth devices, 18, 19, 29 or 30, or the LEDs 20, or other components of the system 100 are implemented is not particularly limited and will depend on how the system 100 is implemented.
[0111] It should be expressly understood that implementations of the system 100, element 4, the circuit 3, the frequency converter 2, the distributive switch 6, the single-wire electric wires, such as the first wire 8, the second wire 11, the third wire 21 or the fourth wire 22, the capacitors 200, 201, or 202, the inductors 203 or 204, or the pluralities of first, second, third, fourth devices, 18, 19, 29 or 30, or the LEDs 20 are provided for illustration purposes only. As such, those skilled in the art will easily appreciate other specific implementational details for the system 100, element 4, the circuit 3, the frequency converter 2, the distributive switch 6, the single-wire electric wires, such as the first wire 8, the second wire 11, the third wire 21 or the fourth wire 22, the capacitors 200, 201, or 202, the inductors 203 or 204, or the pluralities of first, second, third, fourth devices, 18, 19, 29 or 30, or the LEDs 20. As such, by no means, examples provided herein above are meant to limit the scope of the present technology.
[0112] One skilled in the art will appreciate when the instant description refers to “receiving data” from sensors, executing receiving of the data may receive an electronic (or other) signal from the sensors. One skilled in the art will further appreciate that there may me a step of displaying data to the user via a user-graphical interface (such as the screen of the electronic device and the like) may involve transmitting a signal to the user-graphical interface, the signal containing data, which data can be manipulated and at least a portion of the data can be displayed to the user using the user-graphical interface.
[0113] Some of these steps and signal sending-receiving are well known in the art and, as such, have been omitted in certain portions of this description for the sake of simplicity. The signals can be sent-received using optical means (such as a fibre-optic connection), electronic means (such as using wired or wireless connection), and mechanical means (such as pressure-based, temperature based or any other suitable physical parameter based).
[0114] Modifications and improvements to the above-described implementations of the present technology may become apparent to those skilled in the art. The foregoing description is intended to be exemplary rather than limiting. The scope of the present technology is therefore intended to be limited solely by the scope of the appended claims.