JP2023093023A - Electric power generation system, power reception module, and power supply module - Google Patents

Abstract

To provide an electric power generation system capable of generating electric power applicable to insulated wires.SOLUTION: An electric power generation system 10 includes a first module (power reception module 1) and a second module (power supply module 2). The first module is attached to an insulated wire 3. The second module is connected to the insulated wire 3 to apply a high-frequency voltage, which is a voltage with a frequency higher than the commercial frequency, across multiple conductors. The first module has multiple electrodes and a power circuit. The multiple electrodes are arranged to face multiple conductors of the insulated wire 3. The power circuit is connected to multiple electrodes. The power circuit generates electric power from the voltage including the above high-frequency voltage applied to the multiple conductors, and electric energy generated by a capacitance between each of the multiple conductors and the corresponding multiple electrodes.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present disclosure relates generally to a power generation system, a power receiving module, and a power feeding module, and more particularly to a power generating system that generates power, a power receiving module included in the power generation system, and a power feeding module included in the power generation system.

Patent Literature 1 describes a power supply that generates electric power by electrostatic induction from bare wires such as overhead power lines. The power supply device described in Patent Literature 1 includes an induction electrode, a shield, and an output section. The induction electrode is arranged near one of the plurality of conductors (overhead power lines). The shield is disposed between one conductor and another conductor among the plurality of conductors, and shields an electric field generated from the other conductor from the induction electrode. The output is drawn across a parallel circuit due to the stray capacitance and inductance between the inductive electrode and the shield.

JP 2013-172584 A

The power supply device described in Patent Document 1 is intended for bare electric wires such as overhead power lines, and could not be applied to insulated electric wires such as VVF cables.

An object of the present disclosure is to provide a power generation system, a power receiving module, and a power feeding module that are applicable to insulated wires and capable of generating power.

A power generation system according to one aspect of the present disclosure includes a first module and a second module. The first module is attached to an insulated wire. The insulated wire includes a plurality of conductors and a plurality of insulators respectively covering the plurality of conductors. A said 2nd module is connected to the said insulated wire, and applies the high frequency voltage which is a voltage of a frequency higher than a commercial frequency between these conductors. The first module has a plurality of electrodes and a power circuit. The plurality of electrodes are arranged to face the plurality of conductors. The power circuit is connected to the plurality of electrodes. The power supply circuit includes electric energy generated by a voltage including the high-frequency voltage applied between the plurality of conductors, and electrostatic capacitance between each of the plurality of conductors and a corresponding one of the plurality of electrodes. to generate electricity.

A power receiving module according to an aspect of the present disclosure is used as the first module in the power generation system.

A power supply module according to an aspect of the present disclosure is used as the second module in the power generation system.

A power generation system, a power receiving module, and a power feeding module according to one aspect of the present disclosure can be applied to insulated wires and can generate power.

FIG. 1 is a configuration diagram of a power generation system according to an embodiment. FIG. 2 is a configuration diagram of a power receiving module according to the embodiment. FIG. 3 is a perspective view of the same power receiving module attached to an insulated wire. FIG. 4A is a waveform diagram of the commercial power supply voltage applied to the insulated wire to which the power receiving module is attached; FIG. 4B is a waveform diagram when a high-frequency voltage is superimposed on the commercial power supply voltage applied to the insulated wire to which the power receiving module is attached. FIG. 5 is a plan view of the same power receiving module with the housing opened. FIG. 6 is a cross-sectional view of the power receiving module of the same. 7A to 7C are schematic diagrams showing variations of insulated wires to which the same power receiving module is attached. FIG. 8 is a block diagram of a power supply module according to Modification 2 of the embodiment. FIG. 9 is a waveform diagram when the commercial power supply voltage applied to the insulated wire to which the power receiving module is attached according to Modification 2 of the embodiment is switched at a specific frequency in a specific period.

A power generation system, a power receiving module, and a power feeding module according to embodiments will be described below with reference to the drawings. Each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Also, the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present disclosure can be achieved.

(embodiment)
(1) Overview The power generation system 10 according to the present embodiment, as shown in FIG. It is a system that generates electric power in the power receiving module 1 by attaching the power receiving module 1 to the power receiving module 1 . The facility 100 is, for example, a building in which the distribution board 4 is installed, and is a residence such as a detached house or an apartment house, or a non-residential residence such as an office, a store, a factory, or a nursing care facility. is. In this embodiment, a case where the facility 100 is a detached house will be described as an example.

As shown in FIG. 1, the power generation system 10 includes a plurality of (six in the illustrated example) power receiving modules 1 as first modules (modules) and power feeding modules 2 as second modules. Moreover, the power generation system 10 further includes a communication adapter 5 as an external device.

The power receiving module 1 is attached to the insulated wire 3 as shown in FIG. The insulated wire 3 is, for example, a VVF (vinyl insulated vinyl sheath flat) cable for indoor electrical wiring, and includes a plurality of (two in the illustrated example) conductors 31 and a plurality of (two in the illustrated example) insulators 32. ,including. A plurality of insulators 32 cover the plurality of conductors 31 respectively.

The power receiving module 1 includes a plurality of (two in the illustrated example) electrodes 11 and a power supply circuit 12, as shown in FIG. The multiple electrodes 11 are arranged to face the multiple conductors 31 respectively. A power supply circuit 12 is connected to the plurality of electrodes 11 . The power supply circuit 12 is generated by a voltage including a high-frequency voltage applied between the plurality of conductors 31 and electrostatic capacitances C1 and C2 between each of the plurality of conductors 31 and the corresponding electrodes 11 among the plurality of electrodes 11. Electric power is generated from the electrical energy generated.

The power supply module 2 is connected to an insulated wire 3 as shown in FIG. The power supply module 2 applies a high-frequency voltage, which is a voltage with a frequency higher than the commercial frequency, between the multiple conductors 31 .

The communication adapter 5 communicates with the power receiving module 1 .

In the power receiving module 1 attached to the insulated wires 3, electrostatic capacitances C1 and C2 are generated between the respective conductors 31 of the insulated wires 3 and the corresponding electrodes 11, and the commercial power supply voltage applied between the plurality of conductors 31 and electrostatic capacitances C1 and C2 generate electric energy. A current i1 (see FIG. 2) resulting from this electrical energy is input to the power supply circuit 12 via the plurality of electrodes 11, and the power supply circuit 12 generates electric power. That is, the power generation system 10 according to this embodiment can be applied to the insulated wires 3 and can generate power.

Further, in the power generation system 10 according to the present embodiment, the power supply module 2 applies a high frequency voltage to the insulated wires 3 . This makes it possible to increase the electrostatic capacitances C1 and C2 generated between each conductor 31 and the corresponding electrode 11, and as a result, it is possible to increase the power generated by the power supply circuit 12 as well. Become.

In this embodiment, the power receiving module 1 constitutes a first module, and the power feeding module 2 constitutes a second module. That is, the power receiving module 1 is used in the power generation system 10 as a first module. Also, the power supply module 2 is used as a second module in the power generation system 10 .

(2) Details The power generation system 10 according to this embodiment is applied to the distribution board 4 as described above. That is, the power generation system 10 further includes a power distribution board 4 in addition to the power receiving module 1 , the power feeding module 2 and the communication adapter 5 .

(2.1) Distribution board The distribution board 4 has a plurality of internal devices 40 as shown in FIG. The multiple internal devices 40 include a main breaker 41 , multiple branch breakers 42 , a power supply module 2 , and a communication adapter 5 .

(2.1.1) Main Breaker The main breaker 41 is, for example, a three-pole neutral line open-phase protection function-equipped earth leakage circuit breaker. The three input terminals on the input side (power supply side) of the main breaker 41 are electrically connected one-to-one to the first voltage line, the second voltage line and the neutral line in the single-phase three-wire distribution system. . Three output terminals on the output side (load side) of the master breaker 41 are electrically connected to the first conductive bar, the second conductive bar, and the third conductive bar one-to-one. The first conductive bar conducts with the first voltage line, the second conductive bar conducts with the second voltage line, and the third conductive bar conducts with the neutral line.

(2.1.2) Branch breaker Each of the plurality of branch breakers 42 is, for example, a circuit breaker equipped with an overcurrent tripping device. The two input terminals on the input side (power supply side) of each branch breaker 42 are electrically connected one-to-one to either the first conductive bar or the second conductive bar and the third conductive bar. In this case, each branch breaker 42 is supplied with an AC voltage with an effective value of 100V. Two input terminals of one or more branch breakers 42 may be electrically connected to the first conductive bar and the second conductive bar one-to-one. In this case, the one or more branch breakers 42 are supplied with an AC voltage with an effective value of 200V.

Two terminals on the output side (load side) of each branch breaker 42 are electrically connected to wiring accessories 102 via insulated wires 3 for indoor wiring. The wiring fixture 102 includes, for example, an outlet embedded in an indoor wall and a hook ceiling body provided on an indoor ceiling. One or more loads 101 are connected to each wiring device 102 . In FIG. 1 , one load 101 is connected to each wiring device 102 . The load 101 is, for example, an electric appliance such as a washing machine, a refrigerator, a television receiver, or a lighting fixture. A load 101 such as an electromagnetic cooker and a bathroom dryer may be directly connected to the output terminal of the branch breaker 42 without the wiring device 102 .

(2.1.3) Communication Adapter The communication adapter 5 has a first communication section 51, a second communication section 52, a measurement section 53, and a control section 54, as shown in FIG. The communication adapter 5 is accommodated in the box 43 of the distribution board 4 together with the main breaker 41 and the plurality of branch breakers 42 described above.

The first communication unit 51 has, for example, a specific low-power radio module conforming to a 920 MHz band specific low-power radio station. The first communication unit 51 performs specific low-power wireless communication with a HEMS (Home Energy Management System) (not shown). Note that the first communication unit 51 may have a network controller (integrated circuit) conforming to a wired LAN standard such as 100BASE-T or 1000BASE-T instead of the specific low-power wireless module. In this case, the first communication unit 51 performs wired communication with the HEMS controller via a LAN cable and router.

The second communication unit 52 is configured, for example, to perform wireless communication conforming to BLE (Bluetooth (registered trademark) Low Energy). The second communication unit 52 performs wireless communication with the communication circuit 14 of the power receiving module 1, which will be described later. The second communication unit 52 may be configured to perform wireless communication, infrared communication, or the like conforming to wireless LAN standards (for example, IEEE802.11b/g/n) and ZIG Bee (registered trademark). .

The measuring unit 53 measures the main current flowing through the main breaker 41 and the branch current flowing through each branch breaker 42 . The measurement unit 53 also calculates the power consumption of the main circuit including the main breaker 41 and the power consumption of each branch circuit including each branch breaker 42 based on the measured main current and each branch current.

The controller 54 can be implemented by a computer system having one or more processors and one or more memories. That is, it functions as the control unit 54 by one or more processors executing programs recorded in one or more memories of the computer system. Although the program is pre-recorded in the memory of the control unit 54 here, it may be provided through an electric communication line such as the Internet, or may be provided by being recorded in a non-temporary recording medium such as a memory card. good too. The control unit 54 separately controls the first communication unit 51, the second communication unit 52, and the measurement unit 53 described above.

In this embodiment, as described above, the communication adapter 5 constitutes an external device. That is, the power generation system 10 includes a power receiving module 1 as a module, which will be described later, and a communication adapter 5 as an external device. The communication adapter 5 communicates with the power receiving module 1 .

(2.1.4) Power Supply Module The power supply module 2 is connected to the conductive bar on the output side of the main breaker 41, as shown in FIG. The power supply module 2 has a voltage superimposition section 21 . The voltage superimposing unit 21 applies a high-frequency voltage to the commercial power supply voltage (for example, 60 Hz, 100 V) superimposed on the insulated wire 3 . The high-frequency voltage is a voltage with a frequency higher than the commercial frequency, which is the frequency of the commercial power supply voltage. 4A is a waveform diagram of the commercial power supply voltage applied to the insulated wire 3, and FIG. 4B is a waveform diagram of the high frequency voltage superimposed on the commercial power supply voltage. As an example, the voltage superimposition unit 21 superimposes a high frequency voltage of 2 MHz and 1 V on the commercial power supply voltage.

The voltage superimposing unit 21 intermittently superimposes the high-frequency voltage on the commercial power supply voltage at intervals of, for example, 10 seconds. As a result, the power consumption of the voltage superimposing unit 21 can be suppressed as compared with the case where the voltage superimposing unit 21 continuously superimposes the high-frequency voltage on the commercial power supply voltage. Here, the timing at which the voltage superimposing unit 21 superimposes the high-frequency voltage on the commercial power supply voltage includes the timing at which the sensor circuit 13, which will be described later, senses information (for example, temperature information and humidity information) in the facility 100. preferable.

Moreover, it is preferable that the voltage superimposition unit 21 superimposes the high-frequency voltage on the commercial power supply voltage based on the phase of the commercial power supply voltage. For example, if a high-frequency voltage is superimposed at the zero-crossing timing of the commercial power supply voltage, the effect on the load 101 is maximized, and the load 101 may malfunction. Therefore, as shown in FIG. 4B, the voltage superimposing unit 21 applies a high-frequency wave to the commercial power supply voltage within a range of 90°±10° (predetermined range including the maximum amplitude of the commercial power supply voltage). Preferably, the voltages are superimposed. This makes it possible to minimize the influence of the high-frequency voltage superimposed on the commercial power supply voltage on the load 101 .

In this embodiment, the power supply module 2 constitutes a second module and is used as the second module of the power generation system 10 .

(2.2) Power Receiving Module As shown in FIG. 2, the power receiving module 1 has a plurality of (two in the illustrated example) electrodes 11, a power supply circuit 12, a sensor circuit 13, and a communication circuit . The power receiving module 1 further includes a housing 15 as shown in FIGS. The power receiving module 1 is attached to the insulated wire 3 as shown in FIG. In this embodiment, the power receiving module 1 constitutes a first module (module) and is used as the first module 1 of the power generation system.

(2.2.1) Electrode As shown in FIG. 2, the electrodes 11 are arranged to face the conductors 31 of the insulated wire 3, which will be described later. Each of the plurality of electrodes 11 is formed in an arc shape, as shown in FIG. More specifically, each of the plurality of electrodes 11 has a shape that follows the contour of the insulated wire 3 when the power receiving module 1 is attached to the insulated wire 3 . Furthermore, in the present embodiment, the plurality of electrodes 11 are in close contact with the insulated wire 3 in a state where the housing 15 of the power receiving module 1 is attached to the insulated wire 3 (see FIG. 6). 3 and 5, each of the plurality of electrodes 11 is elongated along the first direction D1, which is the direction along the longitudinal direction of the insulated wire 3. As shown in FIGS. Each length of the plurality of electrodes 11 in the first direction D1 is shorter than the length of the adhesion member 6 described below and shorter than the length of the housing 15 . The multiple electrodes 11 are electrically connected to the input end of the power supply circuit 12 .

(2.2.2) Power Supply Circuit The power supply circuit 12 is electrically connected to the multiple electrodes 11 as shown in FIG. The power supply circuit 12 generates operating power for the sensor circuit 13 and the communication circuit 14, which will be described later. The power supply circuit 12 includes a capacitor, a booster circuit, and a smoothing circuit. In the power supply circuit 12, power is accumulated in the capacitor via the plurality of electrodes 11, and when the voltage across the capacitor reaches or exceeds the minimum operating voltage of the booster circuit, the booster circuit generates boosted power with a voltage higher than the voltage across the capacitor. do. Further, in the power supply circuit 12 , the boosted power generated by the booster circuit is smoothed by the smoothing circuit and supplied to the sensor circuit 13 and the communication circuit 14 .

(2.2.3) Sensor Circuit The sensor circuit 13 senses information within the facility 100 . Here, “sensing information” means detecting (measuring) physical quantities such as temperature and humidity in the facility 100 . The information in the facility 100 is, for example, indoor temperature and indoor humidity. That is, the sensor circuit 13 includes a temperature sensor that detects room temperature and a humidity sensor that detects room humidity. The sensor circuit 13 is supplied with power from the power supply circuit 12 described above and operates on this power. The information within the facility 100 is not limited to the indoor temperature and humidity described above, and may be other information as long as it is information within the facility 100 .

(2.2.4) Communication Circuit The communication circuit 14 performs wireless communication with, for example, the second communication section 52 (see FIG. 1) of the communication adapter 5 as an external device. The communication circuit 14 is configured, for example, to perform wireless communication conforming to BLE. The communication circuit 14 is supplied with power from the power supply circuit 12 described above and operates on this power. It should be noted that the communication circuit 14 is also designed to perform wireless communication, infrared communication, etc. conforming to wireless LAN standards (for example, IEEE802.11b/g/n), ZIG Bee (registered trademark), and Wi-Fi (registered trademark). may be configured to

(2.2.5) Housing The housing 15 is a molded article made of synthetic resin such as ABS (Acrylonitrile Butadiene Styrene) resin or PBT (Polybutylene Terephthalate) resin. The housing 15 has, for example, a rectangular parallelepiped shape, as shown in FIG. The housing 15 has two split housings 151 and 152 . The two divided housings 151 and 152 are connected to each other by an arc-shaped connecting body 153 so as to be openable and closable. Hereinafter, one of the two divided housings 151 and 152 may be referred to as the first divided housing 151 and the other as the second divided housing 152 .

As shown in FIGS. 5 and 6, the first split housing 151 has a first concave portion 155 on one surface (right surface in FIG. 6) in a third direction D3 orthogonal to both the first direction D1 and the second direction D2. It is a rectangular box shape provided. The first concave portion 155 has a semi-elliptical shape when viewed from above in the first direction D1.

Here, the second direction D2 is a direction that intersects (perpendicularly) the first direction D1, which is the longitudinal direction of the insulated wire 3, and intersects (perpendicularly) with the direction in which the plurality of conductors 31 of the insulated wire 3 are arranged. is. Further, as described above, the third direction D3 is a direction that intersects (orthogonal to) both the first direction D1 and the second direction D2 and is the direction in which the plurality of conductors 31 are arranged.

Like the first split housing 151, the second split housing 152 has a rectangular box shape with a second concave portion 156 provided on one surface (the left surface in FIG. 6) in the third direction D3. The second recess 156 has a semi-elliptical shape when viewed from the first direction D1. The second split housing 152 also has a coupling plate 154 . The coupling plate 154 has a rectangular shape in plan view from the second direction D2. As shown in FIG. 6, in a state where the housing 15 is attached to the insulated wire 3, a portion (tip) of the coupling plate 154 extends from the first divided housing 151 in the third direction D3 (horizontal direction in FIG. 6). protruding to the side. Therefore, when the housing 15 is attached to the insulated wire 3 , the coupling plate 154 restricts the movement (rotation) of the first divided housing 151 with respect to the second divided housing 152 . As a result, the state in which the housing 15 is attached to the insulated wire 3 can be maintained.

The coupling plate 154 is also provided with grooves 1541 as shown in FIG. The groove 1541 is recessed in a rectangular shape along the thickness direction of the coupling plate 154 (vertical direction in FIG. 6). As shown in FIG. 6, with the housing 15 attached to the insulated wire 3, the tip of a tool (for example, a flat-blade screwdriver) is inserted into the groove 1541, and the base end of the tool (opposite to the tip) The tool is moved so that the end) approaches the housing 15 . As a result, the tip of the coupling plate 154 can be deformed away from the housing 15 (upward in FIG. 6). to rotate the first split housing 151 . As a result, the power receiving module 1 can be removed from the insulated wire 3 .

That is, the two divided housings 151 and 152 are connected to each other so that they can be opened and closed at one end (lower end in FIG. 6) in a second direction D2 that intersects the first direction D1 that is the longitudinal direction of the insulated wire 3. . In addition, the two divided housings 151 and 152 are joined together at the other end (upper end in FIG. 6) in the second direction D2.

Here, in a state where the housing 15 is attached to the insulated wire 3, as shown in FIG. An elliptical holding portion 150 is configured in a plan view from the first direction D1. As shown in FIG. 6, the holding portion 150 has a shape that follows the contour of the insulated wire 3 (the contour of the sheath 33). That is, the housing 15 has a holding portion 150 along the contour of the insulated wire 3 . As shown in FIG. 6, the plurality of electrodes 11 described above are arranged along surfaces 1551 and 1561 (see FIG. 5) facing the insulated wire 3 in the holding portion 150. As shown in FIG.

(2.3) Insulated Wire The insulated wire 3 is, for example, a power line that supplies power to the load 101 in the facility 100 . The insulated wire 3 is, for example, a VVF cable for indoor electrical wiring. The insulated wire 3 includes a plurality of (two in the illustrated example) conductors 31, a plurality of (two in the illustrated example) insulators 32, and a sheath 33, as shown in FIGS.

Each of the multiple conductors 31 is, for example, a copper wire composed of a single wire or a twisted wire. Each of the plurality of insulators 32 is made of polyvinyl chloride (PVC), for example, and covers the corresponding conductor 31 among the plurality of conductors 31 . The sheath 33 is made of polyvinyl chloride like the insulators 32 and covers the insulators 32 . That is, in the insulated wire 3, the multiple conductors 31 are covered with double insulators (the insulator 32 and the sheath 33). As shown in FIGS. 2 and 3, the sheath 33 has an elliptical cross-sectional shape with a major axis extending in the third direction D3 when viewed from the first direction D1, which is the longitudinal direction of the insulated wire 3. As shown in FIG. In this embodiment, an AC voltage (commercial power supply voltage) of 60 Hz and 100 V is applied between the plurality of conductors 31 .

Here, the power receiving module 1 according to the present embodiment further includes a plurality of (two in the illustrated example) adhesion members 6 as shown in FIGS. 5 and 6 . The plurality of contact members 6 are made of, for example, an elastic material such as rubber, and are arc-shaped along the shape of the first recess 155 and the second recess 156 of the housing 15 (see FIG. 6). As shown in FIG. 6, each of the plurality of adhesion members 6 is arranged in the third direction D3 (horizontal direction in FIG. 6) with the corresponding electrode 11 out of the plurality of electrodes 11 and the facing surface 1551 of the first concave portion 155 or It is provided between the facing surface 1561 of the second concave portion 156 and the opposing surface 1561 . The facing surface 1551 is a surface facing the insulated wire 3 in the first recess 155 . The facing surface 1561 is a surface facing the insulated wire 3 in the second recess 156 .

As shown in FIG. 6 , the plurality of adhesion members 6 cause the plurality of electrodes 11 to adhere to the insulated wire 3 while the housing 15 of the power receiving module 1 is attached to the insulated wire 3 . This makes it possible to increase the electrostatic capacitances C1 and C2 generated between the electrodes 11 and the corresponding conductors 31, and as a result, it is possible to increase the power generated by the power supply circuit 12. .

(3) Characteristics of Power Receiving Module Next, characteristics of the power receiving module 1 will be described.

In the power receiving module 1, as described above, each of the plurality of electrodes 11 is statically interposed between the corresponding conductor 31 of the plurality of conductors 31, that is, the conductor 31 facing in one direction (the third direction D3). Capacitances C1 and C2 are generated. Here, let Rc be the resistance value of the lead wire connecting the plurality of conductors 31 and the power supply circuit 12, and let Vs be the voltage applied between the plurality of conductors 31. FIG. In this case, the resistance value Rc is calculated based on the formula (1).

Then, the current i1 flowing into the power supply circuit 12 is calculated based on the equation (2).

Electric power is accumulated in the capacitor by the current i1 shown in the equation (2) flowing through the capacitor of the power supply circuit 12 . Then, as described above, when the voltage across the capacitor becomes equal to or higher than the minimum operating voltage of the booster circuit, the booster circuit generates boosted power with a voltage higher than the voltage across the capacitor. Smoothed by a smoothing circuit. The power supply circuit 12 supplies power (DC power) smoothed by the smoothing circuit to the sensor circuit 13 and the communication circuit 14 .

In this way, the power supply circuit 12 has the voltage applied between the plurality of conductors 31 of the insulated wire 3 and the capacitance C1 between each of the plurality of conductors 31 and the corresponding electrode 11 among the plurality of electrodes 11. , C2 to generate power to be supplied to the sensor circuit 13 and the communication circuit 14 . That is, the power receiving module 1 according to this embodiment can be applied to the insulated wires 3 and can generate electric power.

By the way, in the power generation system 10 according to this embodiment, as described above, the high-frequency voltage is superimposed on the commercial power supply voltage applied to the insulated wires 3 . This makes it possible to increase the current value of the current i<b>1 output to the power supply circuit 12 as compared with the case where only the commercial power supply voltage is applied to the insulated wire 3 . For example, when a high frequency voltage of 2 MHz and 1 V is superimposed on the commercial power supply voltage, the current value of the current i1 can be increased up to about 300 times. That is, in the power generation system 10 according to the present embodiment, the voltage applied between the plurality of conductors 31 is a voltage including the above-described high-frequency voltage. More specifically, the high-frequency voltage is superimposed on the commercial power supply voltage. voltage.

(4) Effect In the power generation system 10 according to the embodiment, when the power receiving module 1 is attached to the insulated wire 3, as shown in FIGS. ing. As a result, capacitances C1 and C2 are generated between each electrode 11 and the corresponding conductor 31 . The power supply circuit 12 generates power from the voltage Vs applied between the conductors 31 and the electrical energy generated by the capacitances C1 and C2. That is, the power generation system 10 according to this embodiment can be applied to the insulated wires 3 and can generate power.

Further, in the power generation system 10 according to the embodiment, the power supply module 2 applies a high-frequency voltage to the insulated wires 3 . This makes it possible to increase the electrostatic capacitances C1 and C2 generated between each conductor 31 and the corresponding electrode 11, and as a result, it is possible to increase the power generated by the power supply circuit 12 as well. Become.

Further, in the power generation system 10 according to the embodiment, the voltage superimposing unit 21 superimposes the high-frequency voltage on the commercial power supply voltage applied to the insulated wire 3 . This makes it possible to increase the electrostatic capacitances C1 and C2 generated between each conductor 31 and the corresponding electrode 11, and as a result, it is possible to increase the power generated by the power supply circuit 12 as well. Become.

Further, in the power generation system 10 according to the embodiment, the voltage superimposing unit 21 intermittently superimposes the high frequency voltage on the commercial power supply voltage. This makes it possible to suppress the power consumption of the voltage superimposing unit 21 .

Further, in the power generation system 10 according to the embodiment, the voltage superimposing unit 21 superimposes the high-frequency voltage on the commercial power supply voltage based on the phase of the commercial power supply voltage. This makes it possible to suppress the influence of the high frequency voltage on the load 101 .

Further, in the power generation system 10 according to the embodiment, the distribution board 4 has a main breaker 41 , one or more branch breakers 42 and a plurality of internal devices 40 including the power supply module 2 . This makes it possible to superimpose a high-frequency voltage substantially equally on each branch circuit including the branch breaker (42).

(5) Modifications The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiments can be modified in various ways according to design and the like as long as the object of the present disclosure can be achieved. Modifications of the above-described embodiment are listed below. Modifications described below can be applied in combination as appropriate.

(5.1) Modification 1
In the above-described embodiment, the insulated wire 3 is the VVF cable, but the insulated wire 3 is not limited to the VVF cable, and may be, for example, a VCTF (vinyl cabtire) cable. The insulated wire 3 includes a plurality of (two in the illustrated example) conductors 31, a plurality of (two in the illustrated example) insulators 32, and a sheath 33, as shown in FIG. 7A. The sheath 33 has a circular shape in plan view from the longitudinal direction of the insulated wire 3 (the direction perpendicular to the paper surface of FIG. 7A). In this case, each of the plurality of electrodes 11 is arranged along the outer shape of the sheath 33 so as to face the corresponding conductor 31 among the plurality of conductors 31, as shown in FIG. 7A.

Also, the insulated wire 3 may be, for example, an NNFF (chloroprene rubber insulated flat) cord. As shown in FIG. 7B, the insulated wire 3 includes multiple (two in the illustrated example) conductors 31 and multiple (two in the illustrated example) insulators 32 . Each of the plurality of insulators 32 has an elliptical shape in plan view from the longitudinal direction of the insulated wire 3 (the direction perpendicular to the paper surface of FIG. 7B). In this case, as shown in FIG. 7B, each of the plurality of electrodes 11 is arranged along the outline of the corresponding insulator 32 among the plurality of insulators 32 so as to face the corresponding conductor 31 among the plurality of conductors 31. are placed.

Also, the insulated wire 3 may be, for example, a VFF (vinyl flat) cable. As shown in FIG. 7C, the insulated wire 3 includes multiple (two in the illustrated example) conductors 31 and multiple (two in the illustrated example) insulators 32 . Each of the plurality of insulators 32 has an elliptical shape in plan view from the longitudinal direction of the insulated wire 3 (the direction perpendicular to the paper surface of FIG. 7C). In this case, as shown in FIG. 7C, each of the plurality of electrodes 11 is arranged along the outline of the corresponding insulator 32 among the plurality of insulators 32 so as to face the corresponding conductor 31 among the plurality of conductors 31. are placed.

(5.2) Modification 2
In the above-described embodiment, the power supply module 2 has the voltage superimposing unit 21, and the voltage superimposing unit 21 superimposes the high-frequency voltage on the commercial power supply voltage, thereby increasing the power generated by the power supply circuit 12. ing. On the other hand, the power supply module 2A may have a switching element 22 and a control circuit 23, as shown in FIG. A power supply module 2A according to Modification 2 will be described below with reference to FIGS. 8 and 9. FIG.

A power supply module 2A according to Modification 2 includes a switching element 22 and a control circuit 23, as shown in FIG. The switching element 22 is, for example, a semiconductor switch such as a MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor). The switching element 22 is, for example, an N-channel MOSFET, but may be a P-channel MOSFET. The switching element 22 is inserted in the electric line between the output side of the main breaker 41 and the input side of each branch breaker 42, and the commercial power supply voltage applied to the insulated wire 3 is changed by turning on/off the switching element 22. can be turned on/off.

The control circuit 23 controls on/off of the switching element 22 . More specifically, the control circuit 23 controls on/off of the switching element 22 at a switching frequency of 2 MHz, for example. This makes it possible to change the commercial power supply voltage applied to the insulated wire 3 to a high-frequency voltage during the period in which the switching element 22 is switched at high speed. That is, the control circuit 23 controls on/off of the switching element 22 so that the commercial power supply voltage applied to the insulated wire 3 becomes a high frequency voltage. This makes it possible to increase the current value of the current i1 output to the power supply circuit 12 compared to the case where no switching operation is performed with respect to the commercial power supply voltage applied to the insulated wire 3 . For example, when a high frequency voltage of 2 MHz and 100 V is applied to the insulated wire 3, the current value of the current i1 can be increased up to about 30000 times.

Here, the control circuit 23 controls on/off of the switching element 22 based on the phase of the commercial power supply voltage applied to the insulated wire 3 . More specifically, as shown in FIG. 9, the control circuit 23 controls the switching element 22 at a switching frequency of 2 MHz in the range where the phase of the commercial power supply voltage is 90°±10° (the hatched range in FIG. 9). on/off. This makes it possible to supply power to the loads 101 connected to the branch breakers 42 while minimizing the effect of switching on the loads 101 .

In Modification 2, the insulated wire 3 is a power wire to which a commercial power supply voltage is applied, but the insulated wire 3 may be a dedicated line. It is preferable that the end of the leased line is open. In this case, by attaching the power receiving module 1 to the insulated wire 3 that is a dedicated line, the power receiving module 1 can generate electric power.

(5.3) Other Modifications Other modifications are listed below.

In the above-described embodiment, the commercial power voltage applied to the insulated wire 3 is 60 Hz and 100 V, but the commercial power voltage is not limited to 60 Hz and 100 V, and may be 50 Hz and 100 V, for example. Furthermore, the commercial power supply voltage may be, for example, 50 Hz and 200 V, or 60 Hz and 200 V.

In the above-described embodiment, each electrode 11 has an arc shape, but the shape of each electrode 11 is not limited to an arc shape, and may be, for example, a plate shape. Further, the number of electrodes 11 is not limited to two, and may be three, for example. In this case, the number of conductors 31 is also three, and it is preferable that the plurality of electrodes 11 correspond to the plurality of conductors 31 one-to-one.

Although the number of conductors 31 of the insulated wire 3 is two in the above-described embodiment, the number of conductors 31 is not limited to two, and may be, for example, three. In this case, the number of insulators 32 is also three, and it is preferable that the plurality of conductors 31 and the plurality of insulators 32 are in one-to-one correspondence.

Although the housing 15 has a rectangular parallelepiped shape in the above-described embodiment, the housing 15 is not limited to a rectangular parallelepiped shape, and may have a spherical shape as long as it has a holding portion 150 .

In the above-described embodiment, the distribution board 4 has a plurality of branch breakers 42 as the internal device 40 , but the distribution board 4 may have one branch breaker 42 .

In the above-described embodiment, the power supply module 2 is connected to the electric line between the output side of the main breaker 41 and the input side of each branch breaker 32 . On the other hand, the power supply module 2 may be connected to the output side of the branch breaker 42 to which the wiring device 102 and the load 101 are not connected, for example.

Although the power generation system 10 includes the communication adapter 5 in the above-described embodiment, the communication adapter 5 may be omitted. That is, the power generation system (module system) 10 according to this embodiment only needs to include the power receiving module 1 as the first module and the power feeding module 2 as the second module.

(mode)
The following aspects are disclosed in this specification.

A power generation system (10) according to a first aspect comprises a first module (1) and a second module (2). A first module (1) is attached to an insulated wire (3). The insulated wire (3) includes a plurality of conductors (31) and a plurality of insulators (32) respectively covering the plurality of conductors (31). A second module (2) is connected to an insulated wire (3) and applies a high-frequency voltage, which is a voltage higher than the commercial frequency, across a plurality of conductors (31). A first module (1) comprises a plurality of electrodes (11) and a power circuit (12). A plurality of electrodes (11) are arranged so as to face each of the plurality of conductors (31). A power supply circuit (12) is connected to the plurality of electrodes (11). A power supply circuit (12) includes a voltage including the high-frequency voltage applied between a plurality of conductors (31), and each of the plurality of conductors (31) and a corresponding electrode (11) among the plurality of electrodes (11). Electric power is generated from the electrical energy generated by the capacitance between.

According to this aspect, it is applicable to an insulated wire (3) and can generate electric power. Moreover, according to this aspect, it is possible to increase the power generated by the power supply circuit (12).

In the power generation system (10) according to the second aspect, in the first aspect, the second module (2) has a voltage superimposition section (21). A voltage superimposition unit (21) superimposes a high-frequency voltage on a commercial power supply voltage applied to the insulated wire (3).

According to this aspect, it is possible to increase the power generated by the first module (1).

In the power generation system (10) according to the third aspect, in the second aspect, the voltage superimposition section (21) intermittently superimposes the high frequency voltage on the commercial power supply voltage.

According to this aspect, it is possible to suppress the power consumption of the second module (2).

In the power generation system (10) according to the fourth aspect, in the second or third aspect, the voltage superimposition section (21) superimposes the high frequency voltage on the commercial power supply voltage based on the phase of the commercial power supply voltage.

According to this aspect, it is possible to suppress the influence of the high-frequency voltage on the load (101).

In the power generation system (10) according to the fifth aspect, in the first aspect, the second module (2) has a switching element (22) and a control circuit (23). A control circuit (23) controls on/off of the switching element (22) so that the commercial power supply voltage applied to the insulated wire (3) becomes a high frequency voltage.

According to this aspect, it is possible to increase the power generated by the first module (1).

In the power generation system (10) according to the sixth aspect, in the fifth aspect, the control circuit (23) controls on/off of the switching element (22) based on the phase of the commercial power supply voltage.

According to this aspect, it is possible to suppress the influence of the high-frequency voltage on the load (101).

A power generation system (10) according to a seventh aspect further comprises a distribution board (4) in any one of the first to sixth aspects. The distribution board (4) has a plurality of internal devices (40) including a master breaker (41) and one or more branch breakers (42). A plurality of internal devices (40) includes a second module (2).

According to this aspect, it is possible to superimpose the high-frequency voltage substantially uniformly on each branch circuit including the branch breaker (42).

The power receiving module (1) according to the eighth aspect is used as the first module (1) in the power generation system (10) according to any one of the first to seventh aspects.

According to this aspect, it is applicable to an insulated wire (3) and can generate electric power. Moreover, according to this aspect, it is possible to increase the power generated by the power supply circuit (12).

The power supply module (2) according to the ninth aspect is used as the second module (2) in the power generation system (10) according to any one of the first to seventh aspects.

According to this aspect, it is applicable to an insulated wire (3) and can generate electric power. Moreover, according to this aspect, it is possible to increase the power generated by the power supply circuit (12).

The configurations according to the second to seventh aspects are not essential configurations for the power generation system (10), and can be omitted as appropriate.

1 power receiving module (first module)
2 Power supply module (second module)
3 Insulated wire 4 Distribution board 10 Electric power generation system 11 Electrode 12 Power supply circuit 21 Voltage superposition unit 22 Switching element 23 Control circuit 31 Conductor 32 Insulator 40 Internal device 41 Main breaker 42 Branch breaker

Claims (9)

a first module attached to an insulated wire comprising a plurality of conductors and a plurality of insulators respectively covering the plurality of conductors;
a second module that is connected to the insulated wire and applies a high-frequency voltage, which is a voltage having a frequency higher than a commercial frequency, between the plurality of conductors;
The first module is
a plurality of electrodes arranged to face the plurality of conductors;
a power supply circuit connected to the plurality of electrodes;
The power supply circuit includes electric energy generated by a voltage including the high-frequency voltage applied between the plurality of conductors, and electrostatic capacitance between each of the plurality of conductors and a corresponding one of the plurality of electrodes. to generate power from
power generation system. The second module has a voltage superimposition unit that superimposes the high-frequency voltage on a commercial power supply voltage applied to the insulated wire.
11. The power generation system of claim 1. The voltage superimposition unit intermittently superimposes the high-frequency voltage on the commercial power supply voltage.
3. The power generation system of claim 2. The voltage superimposition unit superimposes the high-frequency voltage on the commercial power supply voltage based on the phase of the commercial power supply voltage.
4. A power generation system according to claim 2 or 3. The second module is
a switching element;
a control circuit that controls on/off of the switching element so that the commercial power supply voltage applied to the insulated wire becomes the high frequency voltage;
11. The power generation system of claim 1. The control circuit controls on/off of the switching element based on the phase of the commercial power supply voltage.
6. The power generation system of claim 5. Further comprising a distribution board having a plurality of internal devices including a main breaker and one or more branch breakers,
wherein the plurality of internal devices includes the second module;
The power generation system according to any one of claims 1-6. Used as the first module in the power generation system according to any one of claims 1 to 7,
Power receiving module. Used as the second module in the power generation system according to any one of claims 1 to 7,
power supply module.

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