WO2018193661A1 - Dispositif d'alimentation électrique et procédé d'alimentation électrique - Google Patents

Dispositif d'alimentation électrique et procédé d'alimentation électrique Download PDF

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Publication number
WO2018193661A1
WO2018193661A1 PCT/JP2017/043856 JP2017043856W WO2018193661A1 WO 2018193661 A1 WO2018193661 A1 WO 2018193661A1 JP 2017043856 W JP2017043856 W JP 2017043856W WO 2018193661 A1 WO2018193661 A1 WO 2018193661A1
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Prior art keywords
power
power supply
current
component
supply device
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PCT/JP2017/043856
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English (en)
Japanese (ja)
Inventor
裕司 倉永
英範 小田
康二 寺崎
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大電株式会社
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Priority to KR1020177037705A priority Critical patent/KR102057138B1/ko
Priority to JP2017564142A priority patent/JP6351884B1/ja
Publication of WO2018193661A1 publication Critical patent/WO2018193661A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode

Definitions

  • the present invention relates to a power supply device that obtains a power source using an induction current from a power line including a transmission / distribution line and a ground line (ground wire), and in particular, even when the fluctuation range of the current flowing through the power line is large,
  • the present invention relates to a power supply device capable of stably obtaining power.
  • CT current transformer
  • a CT is attached to a distribution line as an auxiliary power supply, and includes an electric double layer capacitor for power storage and a driving battery for power supply.
  • the power supply monitoring circuit measures the voltage value of the battery and switches between the electric double layer capacitor or the driving battery as a driving power source (see Patent Document 2).
  • an aerial wire that passes through an aerial ground wire installed in parallel with a power transmission line in a split CT core obtained by dividing the core and extracts an induced current generated in the aerial ground wire.
  • the power supply device using the induced current of the ground wire when the means for increasing the output power of the CT, or the processing accuracy of the cut surface of the CT core or the output current is taken out in parallel from a plurality of CTs, the characteristics of each CT vary.
  • there is an overhead ground wire induced current power supply device characterized by connecting a capacitor to the CT output terminal (patent) Reference 3).
  • JP 2002-48831 A Japanese Patent Laid-Open No. 2015-19468 JP 2006-197758 A
  • the conventional power supply device is essentially intended to increase the output power, and is designed to efficiently obtain power for a device with a small current flowing through the power line or a small current fluctuation range. is there.
  • CT is a method in which a current is forcibly supplied to a secondary side with respect to a primary side current based on a certain fixed conversion ratio. That is, when the primary side current is small, a small current is supplied to the secondary side, and when the primary side current is large, a large current is supplied to the secondary side. Therefore, in a conventional power supply device intended to increase the output, it is important in design that the primary current (in this case, the current flowing through the power line) is small or the fluctuation range of the current is small.
  • the current flowing through the actual power line is determined by the output of the power plant and the amount of power required by the power consumer, it varies greatly depending on the time zone, season, sunshine conditions, and the like.
  • the electric power supplied by solar power generation is greatly influenced by the sunlight conditions, and the electric power supplied from the thermal power plant varies greatly to correspond to the summer peak of electric power consumers.
  • the flowing current has an extremely wide fluctuation range from several tens of amperes to several thousand amperes.
  • the conventional power supply device is generally intended to operate with a relatively small current, so when used in a place where a large current flows, such as a transmission / distribution line that becomes a power grid trunk line, it is unexpected. Excessive power is supplied, making it difficult to deal with this excessive power.
  • a low-voltage power line can be newly laid as a means for compensating for insufficient power, particularly when used for power supply to monitoring equipment for underground transmission and distribution facilities such as in manholes.
  • the battery since the battery has a long life, it is necessary to replace the battery regularly. Additional work (application for permission to use roads, opening manholes, exhausting and draining gas in manholes, etc.) is necessary each time, especially in urban areas, and night construction is essential, and traffic regulations There was a problem that interfered with public life due to wastewater, noise, etc.
  • the present invention has been made to solve the above-described problems, and is stably continued without being affected by fluctuations in the current flowing in the power lines including distribution lines (transmission lines) and ground lines (ground wires).
  • An object of the present invention is to provide a power supply device that can obtain power.
  • the present invention controls the phase components on the primary side and secondary side of the inductance so that they are intentionally unbalanced with a completely different concept from the conventional (technique intended to increase output power).
  • a power supply device that can stably and continuously obtain a power supply even if a current flowing through a power line including an electric wire (distribution line), a ground line, and the like fluctuates.
  • the power supply device disclosed in the present application is an inductance component that electromagnetically couples to a power line in a power supply device that supplies power to a load, and current conversion means that supplies an alternating current induced by the inductance component to the load side Rectifying means for rectifying an alternating current supplied from the current converting means into a direct current; power detecting means for detecting a power level supplied from the rectifying means to the load side; the current converting means and the rectifying means And having an inductive component and / or a capacitive component, using the inductive component and / or the capacitive component, disturbing the matching condition of the input impedance of the current conversion means, and unbalance the input impedance.
  • Impedance mismatching means for generating the impedance mismatch, and the impedance mismatch based on the power level detected by the power detection means.
  • control means for controlling the unbalancing by means are those comprising a.
  • the power detection unit detects the power level of the direct current rectified by the rectification unit from the alternating current supplied from the current conversion unit, and the impedance mismatching unit
  • the control means is based on the power level detected by the power detecting means. Since the unbalance by the impedance mismatching means is controlled, the reactive power is generated by the impedance mismatching means, and the power line becomes surplus power (surplus power) without generating Joule heat or overvoltage. Even if fluctuations occur in the current flowing through the power line, it will continue safely and stably. It is possible to supply power to the load side.
  • the current conversion unit is a CT attached to the power line as necessary.
  • the current conversion means is a CT attached to the power line, the inductance component can be handled more easily, and power can be stably supplied to the load side.
  • the power supply device disclosed in the present application further includes surplus power consuming means for consuming surplus power out of the power supplied from the rectifying means to the load side, if necessary, and the power detecting means includes the surplus power.
  • the power level consumed by the power consuming means is detected.
  • the control unit may induct components of the impedance mismatching unit and / or an upper limit value of a threshold with respect to the power value detected by the power detection unit.
  • the control means By increasing the capacitive component, decreasing the inductive component and / or the capacitive component of the impedance mismatching means at the lower limit value of the threshold value, and controlling the power supplied from the rectifying means to the load side, the control means, Since the inductive component and / or the capacitive component of the impedance mismatching means are controlled using the threshold value, the inductive component and / or the capacitive component of the impedance mismatching means can be controlled within a desired range, and the power line Even if fluctuations occur in the current flowing through the power source, the power can be supplied to the load side stably and continuously.
  • the power supply method disclosed in the present application is an electric power supply method for supplying electric power to a load, wherein the electric current is an inductance component electromagnetically coupled to a power line, and an alternating current induced by the inductance component is supplied to the load side.
  • a conversion step a rectification step for rectifying an alternating current supplied from the current conversion step into a direct current
  • a power detection step for detecting a power level supplied from the rectification step to the load side, an inductive component and / or a capacity
  • An impedance mismatching step that unbalances the input impedance by disturbing an input impedance matching condition of the current conversion step using the inductive component and / or the capacitive component
  • the power detection step detects the power level of the direct current rectified by the rectification step
  • the impedance mismatch step detects the inductive component and / or the capacitance component.
  • the control process uses the impedance matching condition on the load side to disturb the impedance, and the control process performs the unbalance process by the impedance mismatch process based on the power level detected by the power detection process. Since the reactive power is generated by the impedance mismatching process, the surplus power (surplus power) is appropriately returned to the power line side (line side), and the current flowing through the power line varies. Even if it occurs, power can be supplied to the load side continuously and stably.
  • the power supply method disclosed in the present application includes a surplus power consumption step of consuming surplus power out of the power supplied from the rectification step to the load side as necessary, and the power detection step includes The power level consumed in the surplus power consumption process is detected.
  • the surplus power consumption step of consuming surplus power among the power supplied from the rectification step to the load side is included, even if surplus power is generated, the surplus power can be efficiently consumed. Power can be supplied to the load side stably and continuously.
  • the control process may include an inductive component of the impedance mismatch process and / or an upper limit value of a threshold with respect to the power value detected in the power detection process.
  • the capacitive component is increased, the inductive component and / or the capacitive component in the impedance mismatch process is decreased by the lower limit value of the threshold value, and the electric power supplied from the rectifying process to the load side is controlled.
  • the control step controls the inductive component and / or the capacitive component of the impedance mismatching step using a threshold value, the inductive component and / or the impedance mismatching step within a desired range.
  • the capacity component can be controlled, and power can be supplied to the load side more stably.
  • the power supply apparatus can process surplus power generated when the current flowing through the power line is large as reactive power, it can use CT that is a high coupling condition when the current flowing through the power line is small, and the output power of CT It is possible to eliminate means for supplementing insufficient power required by conventional power supply devices, such as means for increasing power consumption and power storage means such as a battery, and to simplify surplus power processing means such as heat dissipation and to make a compact device configuration. it can. Further, in the power supply device according to the present invention, since the amount of reactive power generated can be controlled in response to a change in the current flowing through the power line, it can be stably continued without being affected by fluctuations in the current flowing through the power line. A power supply can be obtained.
  • this power supply device becomes wide, and can be used as, for example, a power source for monitoring equipment of underground transmission and distribution equipment in a manhole. That is, by using it as a power source for a monitoring device in a power manhole, it is extremely useful as a power source that replaces the use of a battery in which the installation and life of a new low-voltage power line are problematic.
  • the power supply device can be retrofitted to an existing underground transmission / distribution line in the manhole, so that it can be used as a portable power supply that can be installed as necessary.
  • the block diagram (a) of the power supply device which concerns on the 1st Embodiment of this invention, and the block diagram (b) (c) of the electric power detection means 3 at the time of using a Zener diode are shown.
  • the flowchart of the control method of the power supply device which concerns on the 1st Embodiment of this invention is shown.
  • 1 shows an example of a circuit diagram of a power supply device according to a first embodiment of the present invention.
  • An example of the detailed circuit diagram of the power supply device which concerns on the 1st Embodiment of this invention is shown.
  • An example of the detailed circuit diagram of the power supply device which concerns on the 1st Embodiment of this invention is shown.
  • a configuration diagram (a) of the power supply device according to the third embodiment of the present invention and a configuration diagram of the power supply device when a diode and a resistor are used for the zero-cross detection means are shown in the configuration diagram (b).
  • the power supply device is an inductance component that electromagnetically couples to the power line 101 (connected to the customer load 100) in the power supply device that supplies power to the load 10.
  • the current converting means 1 for supplying an alternating current induced by the inductance component to the load side
  • the rectifying means 2 for rectifying the alternating current supplied from the current converting means 1 into a direct current
  • the power detection means 3 for detecting the power level supplied from the conversion means 1 to the load side, and is connected between the current conversion means 1 and the rectification means 2 and has an inductive component and / or a capacitive component, and the inductive component Impedance mismatching means for disturbing the input impedance matching condition of the current conversion means 1 and unbalance the input impedance by using a capacitance component.
  • a control unit 5 for controlling the unbalancing due to impedance mismatching means 4 is configured to include.
  • the current conversion means 1 is not particularly limited as long as it has an inductance component that electromagnetically couples to the power line 101 and induces an alternating current, but CT can be used.
  • the power line 101 is not limited to a transmission / distribution line, and is not limited as long as it is an electric line or cable in which a current flows, such as factory wiring or a ground line (ground wire).
  • this rectification means 2 is not specifically limited, the rectifier which rectifies
  • the power detecting means 3 is not particularly limited as long as it can detect the power level supplied from the rectifying means 2 to the load side.
  • a Zener diode is preferably used.
  • the power detection means 3 uses a Zener diode and a detection resistor R connected in series with the Zener diode, and is generated at the detection resistor R.
  • the voltage Vzdr to be detected can be detected. That is, as shown in FIG.
  • the power Pzd consumed by the Zener diode is determined by measuring the voltage Vzdr generated at the detection resistor R.
  • the voltage Vzdr generated at the detection resistor R it is possible to easily detect the power level supplied from the rectifying means 2 to the load side.
  • the power detection means 3 includes a Zener diode, and the power detection means 3 generates heat generated by the Zener diode when the power level is detected. May be measured by a temperature sensor or the like.
  • This impedance mismatching means 4 has an inductive component and / or a capacitive component. Using this inductive component and / or capacitive component, the impedance matching condition of the current conversion means 1 is disturbed to imbalance the impedance. It is to become.
  • the unbalanced impedance means that the impedance on the load side of the current conversion means 1 and the impedance on the power supply side (power line 101 side) are not intentionally matched. The purpose of this is to unbalance these impedances by intentionally disturbing the matching condition of the input impedance of the current conversion means 1 using inductive components and / or capacitive components.
  • the main objective was to efficiently supply power to the load side by accurately matching these impedances, so this impedance unbalance is completely different from the conventional case. It is the opposite idea.
  • the control means 5 performs control to increase or decrease the inductive component and / or the capacitance component in the impedance mismatching means 4 according to the power level detected by the power detection means 3, so that the impedance mismatching means 4 Control the degree of unbalance described above.
  • the power detection means 3 detects the power level (S 1), and the control means 5 uses the power detection means 3. It is determined whether the detected power level is equal to or higher than the upper limit value of the threshold (S2). If the detected power level is equal to or higher than the upper limit value of the threshold, the inductive component and / or the capacitive component of the impedance mismatching means 4 is increased ( S3), the effective power supplied from the current conversion means 1 to the load side is decreased.
  • control means 5 determines whether the power level detected by the power detection means 3 is equal to or lower than the lower limit value of the threshold value (S4).
  • the inductive component and / or the capacitive component is reduced (S5), and the effective power supplied from the current conversion means 1 to the load side is increased.
  • FIG. 3 shows an example of a circuit diagram configured according to the above configuration.
  • a CT that has an inductance component electromagnetically coupled to the power line 101 and induces an alternating current is used.
  • this rectifier 2 a full-wave rectifier circuit using a diode bridge is used as a rectifier that rectifies an alternating current into a direct current.
  • the power detection unit 3 as being capable of detecting the power level of the load from the rectifying unit 2, using the Zener diode (and a Zener diode and a detection resistor R 2 connected in series).
  • FIG. 3 shows an example of a single zener diode, the present invention is not limited to this, and a plurality of zener diodes can be connected in series.
  • This impedance mismatching means 4 uses a capacitor as a capacitance component.
  • This impedance mismatching means 4 is comprised from the capacitor
  • the capacitor unit 41 includes a switch mechanism that switches between enabling / disabling of the capacitor circuit with a switch connected in series with the capacitor in order to unbalance the impedance.
  • the impedance mismatching means 4 can be composed of a single capacitor portion 41, but more preferably a plurality of the impedance mismatching means 4 are arranged, and a plurality of capacitors can be controlled by the switch mechanism by the control means 5. It is possible not only to switch the capacitance component (capacitance) ON / OFF, but also to freely adjust the size of the capacitance component, and it is possible to control the capacitance component that is subdivided in stages. Become. That is, by providing a switch that can input a plurality of capacitors in parallel, the control unit 5 can optimally adjust the capacitor input amount according to the power level detected by the power detection unit 3.
  • an MCU which is a microcontroller having an arithmetic function is used.
  • This MCU controls the degree of unbalance by the impedance mismatching unit 4 by controlling the switch mechanism in the capacitor unit 41 according to the power level detected by the power detection unit 3. For example, when the detected power level is larger than the upper limit of the threshold value, the capacitor disposed in the impedance mismatching means 4 is activated (or the effective number of capacitors is increased) by controlling the switch mechanism. To increase the volume component. Further, for example, when the detected power level is smaller than the lower limit of the threshold value, the capacitor disposed in the impedance mismatching means 4 is invalidated (or the number of effective connections of the capacitor is reduced) by controlling the switch mechanism. ) To reduce the capacity component.
  • control unit 5 controls the increase / decrease in the capacitance component of the capacitor unit 41 in the impedance mismatching unit 4 with the switch mechanism, thereby depending on the generation state of the active power of the power supply device that changes over time.
  • Optimal active power control that is, reactive power control
  • the power supply device can control the increase and decrease of reactive power, it is possible to obtain a high-coupling CT that meets the conditions when the current flowing through the power line 101 is small, and the current flowing through the power line 101 is large.
  • a compact apparatus configuration compatible with a dynamic range that also has means for dealing with surplus power at the time is realized.
  • FIG. 4 shows an example of a detailed circuit diagram of the power supply device according to this embodiment based on such a configuration.
  • the current conversion means 1 uses an CT having an inductance component that is electromagnetically coupled to a power cable as the power line 101 and inducing an alternating current.
  • the rectifier 2 uses a full-wave rectifier circuit using a diode bridge as a rectifier that rectifies an alternating current into a direct current.
  • the power detection means 3 uses a Zener diode and a 1.5 ⁇ detection resistor R connected in series with the Zener diode.
  • Zener diodes having a Zener voltage of 6V and a rating of 5W are connected in series so that they can withstand a maximum of 20W of power when the Zener voltage is 24V.
  • FIG. 4 as an example constituted by a plurality of Zener diodes, a case where four are connected in series is shown. However, this number is merely an example, and the present invention is not limited to this, and a plurality (two or more) The Zener diode is not particularly limited.
  • the voltage Vzdr generated by the detection resistor R can be used as a threshold value detected by the power detection means 3 used in the control means 5 by measuring the power consumed by the Zener diode.
  • the impedance mismatching means 4 is composed of four capacitor portions 41 each using a capacitor as a capacitance component and having different electrostatic capacities.
  • Each capacitor unit 41 has a switch that can be turned ON / OFF.
  • As the capacitor of the capacitor unit 41 a film capacitor or a ceramic capacitor having an ideal capacitance is used, and the capacitances are 20 ⁇ F, 40 ⁇ F, 80 ⁇ F, and 160 ⁇ F, respectively.
  • the control means 5 is configured to use a microcontroller (MCU) so that the MCU can control ON / OFF of a switch provided in the capacitor unit 41.
  • MCU microcontroller
  • the capacitance component of the impedance mismatching means 4 can be adjusted in 16 steps from 0 to 300 ⁇ F in steps of 20 ⁇ F.
  • a DC / DC converter 10A that supplies a stable 12V DC voltage to the load 10 and a DC / DC converter 10B that supplies a 5V DC voltage necessary for driving the MCU are provided in front of the load 10. .
  • the CT is electromagnetically coupled to the cable as the power line 101, the energization current of the cable is changed from 60 to 2,000 Arms, and 1 W is consumed by the load 10.
  • the result of measuring the power consumption of the Zener diode detected by the power detection means 3 is shown in FIG.
  • the circled numbers in FIG. 6 indicate the capacitor insertion number (injection number) in the impedance mismatching means 4, and as the number increases by 1, the capacitance of the capacitor increases by 20 ⁇ F.
  • the power supply according to the present embodiment was able to appropriately control the power according to the increase or decrease of the cable energization current. It was also confirmed that 1 W of power could be stably supplied if the cable energization current of the power line 101 was 60 Arms or more.
  • the cable energization current is 1,800 Arms or more, the increase in the capacitance component by the impedance mismatching unit 4 reaches the limit and exceeds the upper limit of 4 W detected by the power detection unit 3. Even when the current was 2,000 Arms, it was well below the rating of 20 W of the Zener diode, so it was confirmed that there was no problem in the power supply device according to this embodiment.
  • the power supply device is not limited to the configuration in which one power supply device having the above-described configuration is provided and electromagnetically coupled to the power line 101 connected to the customer load 100.
  • the power supply device when there are a plurality of power lines 101 having different power systems, by providing a plurality of components of the current conversion means 1, the rectification means 2 and the power detection means 3 of the power supply device configured as described above in one power supply device, It is also possible to make one or the other component function as a spare by attaching the other component to the power line 101 which is a separate power system. That is, even if one or the other power system is stopped, power supply from one side of the structure is not interrupted, so that power can be stably supplied.
  • the power supply device includes the power supplied from the rectifier to the load side as shown in FIG.
  • This configuration includes surplus power consumption means 6 that consumes surplus power, and surplus power detection means 3 a that functions as the power detection means 3 that detects the power level consumed by the surplus power consumption means 6.
  • a constant voltage circuit can be used.
  • a Zener diode or a constant voltage regulator can be used. In the case of a Zener diode, when a voltage exceeding the Zener voltage is applied, the current flowing through the diode increases to maintain a constant voltage, and the Zener diode itself consumes power.
  • the regulator itself generates heat as the voltage on the input side of the regulator increases with respect to the regulator output side (load side) that maintains the constant voltage, and the potential difference between the input and output increases. Consume.
  • the surplus power consumption means 6 is composed of one or a plurality of Zener diodes, and the Zener diode is connected in parallel between the rectifier means 2 and the load 10 can do.
  • the Zener diode is connected in parallel between the rectifier means 2 and the load 10 can do.
  • the surplus power detection means 3a detects the power level of this constant voltage circuit.
  • This power level includes current, voltage, temperature, and the like. That is, the detection target of the surplus power detection means 3a includes the energization current, voltage drop, temperature, etc. of the constant voltage circuit.
  • the surplus power consuming means 6 for consuming surplus power out of the power supplied from the rectifying means 2 to the load side is provided, the amount of surplus power processed by the impedance mismatching means 4 is set to surplus power.
  • the consumption means 6 can also bear the burden, and the device configuration of the impedance mismatching means 4 can be simplified.
  • the power consumption of the surplus power consumption means 6 can be adjusted by controlling the impedance mismatching means 4 by the control means 5, problems such as thermal runaway due to excess processing capacity of the surplus power processing means 6 are prevented. can do.
  • the surplus power consumption means 6 even if the power consumption of the load 10 fluctuates, it is possible to absorb the fluctuation by the power consumption by the surplus power consumption means 6 and realize a power supply device that is resistant to load fluctuations. can do.
  • the power supply device has a capacitance component as the impedance mismatching unit 4 as shown in FIG. A plurality of capacitors formed, and a switch that can be turned on and off by the control means, and as the control means 5, a zero-cross detection means 5a of an AC voltage supplied from the current conversion means to the load side,
  • the control means 5 is configured to turn on and off the impedance mismatching means 4 at the timing when the AC voltage is zero-crossed by the zero-cross detection means 5a.
  • the switch of the impedance mismatching means 4 can use a semiconductor relay.
  • the zero cross detection means 5a measures the AC voltage of the impedance mismatching means 4, and, for example, as shown in FIG. 8B, one end of the output on the load side of the rectification means 2 is common (COM).
  • One of the diodes provided D1 and D2 dividing resistors r 1 and r 2 when the dividing resistor r 2 is connected to the common, by voltage detected by the voltage dividing resistors r 2 detects near become timing at zero volts It is also possible to perform zero cross detection.
  • a semiconductor relay having a zero cross switch function may be used.
  • the switch of the impedance mismatch means 4 can be reliably turned on and off in a state where the voltage is close to zero, preventing a large rush current from flowing through the capacitor and the switch, Generation of noise can be avoided.
  • control unit 5 unbalances the impedance on the load side using only the capacitive component.
  • the present invention is not limited to using only the capacitive component.
  • the control unit 5 can unbalance the impedance using at least a part of the inductance component. That is, it is possible to unbalance the impedance by performing control by combining the two components of the capacitance component and the inductance component.
  • control means 5 uses the two components of the capacitance component and the inductance component for impedance imbalance, the two components of the capacitance component and the inductance component can be combined for more flexibility and efficiency. Therefore, even if a large fluctuation occurs in the current flowing in the power line 101, the impedance unbalance can be finely controlled by adjusting the two components in combination, and stable. The power can be continuously supplied to the load side.
  • the control means 5 can also measure the current of the power line by associating the capacitance component input by the impedance mismatching means 4 with the current flowing through the power line. With this configuration, it is possible to easily grasp the current of the power line that cannot be directly detected on the load side.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne un dispositif d'alimentation électrique permettant d'obtenir de façon stable et continue une alimentation électrique sans être affecté par la variation de courant circulant à travers une ligne électrique. Un dispositif d'alimentation électrique pour fournir de l'électricité à une charge est pourvu de : un moyen de conversion de courant pour fournir un courant CA au côté charge, ledit courant CA étant induit par un composant d'inductance magnétiquement couplé à une ligne électrique ; un moyen de redressement pour redresser le courant CA fourni par le moyen de conversion de courant en courant CC ; un moyen de détection de puissance pour détecter un niveau de puissance fourni au côté charge depuis le moyen de redressement ; un moyen de désadaptation d'impédance connecté entre le moyen de conversion de courant et le moyen de redressement, ayant un composant d'induction et/ou un composant de capacité, et utilisant le composant d'induction et/ou le composant de capacité pour perturber l'état d'adaptation d'impédance d'entrée du moyen de conversion de courant, de façon à déséquilibrer l'impédance d'entrée ; et un moyen de commande pour commander, sur la base du niveau de puissance détecté par le moyen de détection de puissance, le déséquilibrage effectué par le moyen de désadaptation d'impédance.
PCT/JP2017/043856 2017-04-21 2017-12-06 Dispositif d'alimentation électrique et procédé d'alimentation électrique WO2018193661A1 (fr)

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WO2020095555A1 (fr) * 2018-11-08 2020-05-14 Tdk株式会社 Dispositif de génération de puissance de type à induction électromagnétique
JP2021027659A (ja) * 2019-08-02 2021-02-22 株式会社日立製作所 電力供給装置および電力供給方法並びに当該電力供給装置を用いる鉄道車両用監視システム
CN113067417A (zh) * 2021-04-20 2021-07-02 重庆大学 基于无功补偿的取电ct输出功率提升方法
JP2021145396A (ja) * 2020-03-10 2021-09-24 富士電機株式会社 電源装置
WO2022035038A1 (fr) * 2020-08-13 2022-02-17 삼성전자 주식회사 Dispositif de transmission d'énergie sans fil comprenant de multiples résonateurs, et son procédé de fonctionnement
US20220247210A1 (en) * 2019-12-24 2022-08-04 Tdk Corporation Electromagnetic induction power generator
JP2022541142A (ja) * 2019-12-05 2022-09-22 エルジー エナジー ソリューション リミテッド 複数の電流経路を含むバッテリーパック
CN115425769A (zh) * 2022-09-05 2022-12-02 广东电网有限责任公司 一种绝缘架空地线的谐振取能方法、系统及装置
CN115425769B (zh) * 2022-09-05 2024-06-07 广东电网有限责任公司 一种绝缘架空地线的谐振取能方法、系统及装置

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JP2013120098A (ja) * 2011-12-06 2013-06-17 Irt:Kk 電圧検出装置及び電力検出装置
JP2016507206A (ja) * 2013-01-18 2016-03-07 テラ エナジー システム ソリューション カンパニー リミテッド 電磁誘導方式電力供給装置

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020095555A1 (fr) * 2018-11-08 2020-05-14 Tdk株式会社 Dispositif de génération de puissance de type à induction électromagnétique
JPWO2020095555A1 (ja) * 2018-11-08 2021-09-24 Tdk株式会社 電磁誘導型発電装置
JP2021027659A (ja) * 2019-08-02 2021-02-22 株式会社日立製作所 電力供給装置および電力供給方法並びに当該電力供給装置を用いる鉄道車両用監視システム
JP7257913B2 (ja) 2019-08-02 2023-04-14 株式会社日立製作所 電力供給装置および電力供給方法並びに当該電力供給装置を用いる鉄道車両用監視システム
JP7237236B2 (ja) 2019-12-05 2023-03-10 エルジー エナジー ソリューション リミテッド 複数の電流経路を含むバッテリーパック
JP2022541142A (ja) * 2019-12-05 2022-09-22 エルジー エナジー ソリューション リミテッド 複数の電流経路を含むバッテリーパック
US20220247210A1 (en) * 2019-12-24 2022-08-04 Tdk Corporation Electromagnetic induction power generator
JP2021145396A (ja) * 2020-03-10 2021-09-24 富士電機株式会社 電源装置
JP7419890B2 (ja) 2020-03-10 2024-01-23 富士電機株式会社 電源装置
WO2022035038A1 (fr) * 2020-08-13 2022-02-17 삼성전자 주식회사 Dispositif de transmission d'énergie sans fil comprenant de multiples résonateurs, et son procédé de fonctionnement
CN113067417B (zh) * 2021-04-20 2022-11-08 重庆大学 基于无功补偿的取电ct输出功率提升方法
CN113067417A (zh) * 2021-04-20 2021-07-02 重庆大学 基于无功补偿的取电ct输出功率提升方法
CN115425769A (zh) * 2022-09-05 2022-12-02 广东电网有限责任公司 一种绝缘架空地线的谐振取能方法、系统及装置
CN115425769B (zh) * 2022-09-05 2024-06-07 广东电网有限责任公司 一种绝缘架空地线的谐振取能方法、系统及装置

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