WO2013145573A1 - Système d'alimentation électrique sans contact et procédé d'alimentation électrique sans contact - Google Patents

Système d'alimentation électrique sans contact et procédé d'alimentation électrique sans contact Download PDF

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Publication number
WO2013145573A1
WO2013145573A1 PCT/JP2013/001401 JP2013001401W WO2013145573A1 WO 2013145573 A1 WO2013145573 A1 WO 2013145573A1 JP 2013001401 W JP2013001401 W JP 2013001401W WO 2013145573 A1 WO2013145573 A1 WO 2013145573A1
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Prior art keywords
power supply
pair
core
supply lines
coil
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Ceased
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PCT/JP2013/001401
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English (en)
Japanese (ja)
Inventor
良裕 片岡
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Murata Machinery Ltd
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Murata Machinery Ltd
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Priority to JP2014507373A priority Critical patent/JP5733471B2/ja
Publication of WO2013145573A1 publication Critical patent/WO2013145573A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
    • B60M7/003—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway for vehicles using stored power (e.g. charging stations)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/124—Detection or removal of foreign bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
    • B60L9/24—Electric propulsion with power supply external to the vehicle using AC induction motors fed from AC supply lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles
    • B60L2200/44—Industrial trucks or floor conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/32—Auto pilot mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/005—Current collectors for power supply lines of electrically-propelled vehicles without mechanical contact between the collector and the power supply line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/60—Electric or hybrid propulsion means for production processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a non-contact power supply system that supplies power to a transport vehicle or the like in a non-contact manner, and more particularly to a non-contact power supply system that realizes non-contact power reception of a widely movable transport vehicle.
  • Advantages of the automated guided vehicle include shortening of manufacturing time by automating delivery between processes and elimination of process loss due to human error.
  • the non-contact power supply system is composed of a power supply device and a power supply line wired along the transport track.
  • the transport vehicle receives an AC power supply current flowing through the power supply line in a non-contact manner by electromagnetic induction, travels on the transport track by the power reception, and executes processing in each process.
  • the inductance of the feeder line wired along the transport track increases in proportion to the distance.
  • the power supply output voltage calculated by multiplying the inductance and the power supply current increases at the power supply point, which is a connection portion between the power supply apparatus and the power supply line.
  • the feed output voltage exceeds the component voltage rating of the feed device and the withstand voltage of the feed line.
  • Patent Document 1 discloses a tracked cart system in which a temperature abnormality detection circuit is provided in the middle of a power supply line in order to detect heat generation due to an increase in the power supply output voltage.
  • a non-contact power supply system in which a capacitor is arranged in the middle of the power supply line can be considered.
  • a capacitor is provided in the middle of the power supply line and a negative inductance element is added to the power supply line inductance, thereby neutralizing and suppressing the inductance of the entire power supply line and suppressing the voltage at the power supply point.
  • the feeder line constituted by a bundle of a plurality of thin wires is divided at the site and connected to the capacitor. Requires work.
  • the portion where the short-circuiting terminal box is arranged is usually screwed and connected, but it is desirable to suppress heat generation due to loosening of screws.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a non-contact power supply system and a non-contact power supply method in which a power supply line laying and extending work is simplified and a voltage increase is suppressed.
  • a non-contact power feeding system is a non-contact power feeding system that feeds power to a traveling vehicle in a non-contact manner through a pair of feeders arranged along a route of the traveling vehicle. And a fixed core fixedly disposed at an intermediate position of the pair of power supply lines, a coil wound around the fixed core, and a capacitor connected to both ends of the coil, The axial direction of the coil intersects with the extending direction of the pair of power supply lines so as to be electromagnetically coupled to the pair of power supply lines, and viewed from the power supply point side, the fixed core, the coil, and the capacitor
  • the impedance of the electric circuit composed of is characterized by exhibiting capacitive reactance.
  • the fixed core around which the coil is wound is fixedly disposed on the power supply line, and the coil is electromagnetically coupled to the power supply line, so that the fixed core is not divided or dividedly connected.
  • the work of arranging the is facilitated.
  • the impedance of the electric circuit composed of a fixed core, a coil, and a capacitor viewed from the feeding point side indicates capacitive reactance, it is possible to suppress the total equivalent inductance at each point of the feeding point and the feeding line. Become. As a result, it is possible to suppress a voltage increase at each point of the feed point and the feed line.
  • the equipment including the non-contact power supply system is changed, it is not necessary to rearrange a new power supply line or to arrange a terminal box for short-circuiting, so that it can be easily moved and moved.
  • the fixed core includes a flat iron core portion made of a magnetic material around which the coil is wound, and two hollow portions sandwiched between the iron core portions and surrounded by a magnetic material.
  • One of the pair of power supply lines may pass through one of the two cavities, and the other of the pair of power supply lines may pass through the other of the two cavities.
  • the feeder line passes through the hollow portion surrounded by the magnetic material adjacent to the iron core portion around which the coil is wound. For example, compared with the power receiving core of the traveling vehicle in which the opening portion is formed. Thus, the induced current can be generated more efficiently.
  • the fixed core includes the iron core portion, the two cavities, and an E-type core configured of a side wall portion made of a magnetic material and disposed outside the two cavities, and the cavity.
  • a flat I-shaped core made of a magnetic material and surrounded by the iron core and the side wall, and a non-magnetic material inserted between the E-shaped core and the I-shaped core.
  • a flat plate-shaped spacer is included in the fixed core.
  • the inductance value can be adjusted by changing the thickness of the spacer. Furthermore, in the laying and extending work of the feeder line, after the part of the feeder line is arranged in the recess of the E-type core, the fixed core can be easily simplified by simply bonding the spacer and the I-type core to the E-type core. Can be installed.
  • the pair of power supply lines includes a place where power can be received disposed at a position where power can be supplied to the power receiving core of the traveling vehicle, and a curved portion away from the traveling route of the traveling vehicle.
  • the fixed core may be arranged at the bent portion.
  • the traveling range of the traveling vehicle is not limited by the arrangement of the fixed core.
  • the resonance frequency of the electric circuit formed by the pair of power supply lines, the fixed core, the coil, and the capacitor is lower than the power supply frequency of the pair of power supply lines.
  • an electric circuit formed by a feeding line, a fixed core, a coil, and a capacitor can exhibit capacitive reactance characteristics, and the total equivalent at each point of the feeding point and the feeding line. Inductance can be suppressed.
  • a non-contact power feeding method is a non-contact power feeding method in which power is supplied to a traveling vehicle in a non-contact manner through a pair of power supply lines disposed along a route of the traveling vehicle.
  • the fixed core is wound around the fixed core, and the axial direction intersects the extending direction of the pair of power supply lines so that the pair of power supply lines are electromagnetically coupled, and capacitors are connected to both ends.
  • a coil is fixedly arranged in the middle of the pair of power supply lines, and the impedance of the electric circuit composed of the fixed core, the coil, and the capacitor viewed from the power supply point side indicates a capacitive reactance.
  • An alternating current is passed through the pair of power supply lines so that the power receiving core of the traveling vehicle receives non-contact power from the pair of power supply lines by electromagnetic induction.
  • the non-contact power supply system and the non-contact power supply method of the present invention it is not necessary to cut the power supply line when arranging the fixed core provided with the coil and the capacitor on the power supply line. Therefore, it is possible to suppress an increase in the output voltage of the power supply apparatus while simplifying the work of laying and extending the power supply line.
  • FIG. 1 is a diagram showing a configuration of a contactless power feeding system and its surroundings according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of an inductance suppression unit provided in the non-contact power feeding system according to the embodiment of the present invention.
  • FIG. 3A is a perspective view of an EI type core mounted on the non-contact power feeding system according to the embodiment of the present invention.
  • FIG. 3B is an exploded perspective view of components of the EI type core.
  • FIG. 4 is a diagram illustrating an equivalent circuit of the feeder line and the inductance suppressing unit.
  • FIG. 5 is a graph showing the frequency dependence of the equivalent inductance in an electric circuit composed of a feeder line and an inductance suppression unit.
  • FIG. 6 is a diagram for explaining a configuration when an 80-m feed line is laid at the tip of the inductance suppression unit.
  • FIG. 7 is a diagram illustrating an inductance reduction model of the non-contact power feeding system according to the embodiment of the present invention.
  • FIG. 8 is a diagram illustrating a modification of the inductance reduction model of the non-contact power feeding system according to the embodiment of the present invention.
  • FIG. 1 is a diagram showing a configuration of a contactless power feeding system and its surroundings according to an embodiment of the present invention.
  • the non-contact power feeding system 1 in FIG. 1 includes a power feeding device 11, a power feeding line 21, and an inductance suppression unit 31.
  • the feeding device 11 is connected to the feeding line 21 at two feeding points A, and causes the alternating current generated by the feeding device 11 to flow through the feeding line 21.
  • the transport carriage 4 includes a power receiving core 41 that is in non-contact with and close to the pair of power supply lines 21.
  • the power receiving core 41 includes, for example, a main body portion that is formed by winding a coil and made of a magnetic material, and an opening that allows a pair of power supply lines to pass therethrough.
  • the transport carriage 4 receives the alternating current generated by the power feeding device 11 when the power receiving core 41 detects the electromagnetic induction generated by the alternating current flowing through the power feeding line 21 as an electromotive force. Accordingly, the transport cart 4 travels on the travel rail 5 by the power reception and executes a designated process.
  • the feeder line 21 is constructed along the traveling rail 5.
  • the inductance suppression unit 31 is fixedly disposed at a midway position between the pair of power supply lines 21 and is electromagnetically coupled to the pair of power supply lines 21.
  • the inductance of the power supply line 21 installed along the travel rail 5 increases in proportion to the distance. Therefore, when the inductance suppression unit 31 is not arranged, the power supply output voltage calculated by multiplying the inductance of the power supply line 21 and the power supply current is obtained at the power supply point A that is a connection portion between the power supply device 11 and the power supply line 21. It will rise. As a result, the power supply output voltage exceeds the component voltage rating of the power supply device 11 and the withstand voltage of the power supply line, and the component and the power supply line may be destroyed.
  • the inductance suppression unit 31 can have a negative inductance at the power supply frequency due to the structure of the inductance suppression unit 31 (to be described later) and the setting of appropriate electrical parameters. Become. As a result, the total equivalent inductance of the feeder line 21 can be suppressed.
  • the non-contact power feeding system 1 applies that the impedance viewed from the feeding point A of the inductance suppressing unit 31 exhibits a negative inductance characteristic, reduces the total equivalent inductance of the feeding line 21, and This is intended to suppress the voltage increase at each point of A and the feeder line 21.
  • the power supply line 21 includes, for example, a power-receivable portion 211 disposed at a position where power can be supplied to the power receiving core 41 of the transport carriage 4, and a curved portion away from the traveling rail 5 of the transport cart 4. 212, the inductance suppression unit 31 may be disposed at the bent portion 212. Thereby, the installation and adjustment work of the inductance suppression unit 31 can be performed regardless of the operating state of the transport carriage 4. Further, the travel range of the transport carriage 4 is not limited by the arrangement of the inductance suppression unit 31.
  • FIG. 2 is a cross-sectional view of an inductance suppressing unit provided in the non-contact power feeding system according to the embodiment of the present invention.
  • the inductance suppression unit 31 shown in the figure includes a capacitor 31a and an EI type core 31b.
  • the capacitor 31a is disposed outside the EI core 31b and is electrically connected to both ends of the coil 314 wound around the EI core 31b.
  • FIG. 3A is a perspective view of an EI type core mounted on the non-contact power feeding system according to the embodiment of the present invention.
  • FIG. 3B is an exploded perspective view of components of the EI type core according to the embodiment of the present invention.
  • the EI type core 31 b is a fixed core in which an E type core 311 and an I type core 313 are bonded together via a spacer 312.
  • the E-type core 311 is made of a magnetic material such as ferrite, and is provided between a flat iron core portion around which the coil 314 is wound, side wall portions provided at both ends, and between the iron core portion and the side wall portions at both ends. And two recesses.
  • the I-type core 313 is a flat plate made of a magnetic material such as ferrite.
  • the two concave portions are surrounded by the I-type core 313, the iron core portion, and the side wall portion, so that the two concave portions constitute two hollow portions.
  • the E-type core 311 is not limited to the one in which the iron core portion and the side wall portion are integrally formed.
  • An E-type core formed by combining a plurality of flat I-type cores made of a magnetic material is also included in the E-type core of the present invention.
  • the inductance suppression unit 31 is arranged so that the axial direction of the coil 314 intersects the extending direction of the pair of feeder lines 21. Further, the coil 314 is disposed between the pair of power supply lines 21. As a result, the magnetic flux generated by the alternating current flowing through the feeder line 21 interacts with the magnetic flux generated by the coil 314, and the reactance of the feeder line 21 is less inductive than when the inductance suppression unit 31 is not disposed. It changes in the direction of capacitive.
  • the configuration of the E-type core 311, the I-type core 313, and the coil 314 stabilizes the inductance value defined by the coil 314 without leaking the magnetic flux generated by the coil 314 to the outside of the E-type core 311 and the I-type core 313. It is possible to make it.
  • the spacer 312 is a flat plate made of a nonmagnetic material, and is interposed between the E-type core 311 and the I-type core 313.
  • the inductance value can be adjusted by changing the thickness of the spacer 312.
  • one of the pair of power supply lines 21 passes through one of the hollow portions of the EI type core 31b, and the other of the pair of power supply lines 21 passes through the other of the hollow portions of the EI type core 31b.
  • the feeder line 21 penetrates the cavity surrounded by the E-type core 311 and the I-type core 313 made of a magnetic material, the power-receiving core 41 of the transport carriage 4 in which the opening is formed, In comparison, an induced current can be generated more efficiently.
  • FIG. 4 is a diagram illustrating an equivalent circuit of the feeder line and the inductance suppressing unit.
  • the inductance suppression unit 31 is disposed at the end of the power supply line 21, and the power supply line 21 is viewed from a power supply point A that is a connection part between the power supply device 11 and the power supply line 21.
  • Z 0 be the impedance. That is, it is assumed that the distance between the arrangement point of the inductance suppression unit 31 and the end of the feeder line 21 is 0 m.
  • the coil 314 and the capacitor 31a are connected in series. Further, in consideration of the inductance component of the feeder line 21 and the resistance component existing between the coil 314 and the capacitor 31a, the electric circuit composed of the feeder line 21 and the inductance suppressing unit 31 is as shown in FIG. become.
  • the inductances of the coil 314 and the feeder line 21 are La and Lb
  • the capacitance of the capacitor 31a is Ca
  • the resistance component existing between the coil 314 and the capacitor 31a is Ra
  • the coupling coefficient between La and Lb is k. Represents. Since the resistance component Ra is negligible compared to other inductance components and capacitance components, the electric circuit composed of the feeder line 21 and the inductance suppression unit 31 can be simplified as shown in FIG.
  • Equation 1 the impedance Z 0 is expressed by Equation 1.
  • impedance Z 0 has only a reactance component and is represented by formula 2.
  • ⁇ 2 ⁇ f (f is a frequency). If the value of the imaginary part on the right side of Equation 2 is positive, the impedance Z 0 is inductive (inductance) reactance, and if it is negative, the impedance Z 0 is capacitive (capacitance, negative inductance) reactance. To be judged. Therefore, whether the impedance Z 0 has inductive reactance or capacitive reactance is determined by the electrical parameters La, Lb, Ca, and ⁇ (f) in Equation 2.
  • FIG. 5 is a graph showing the frequency dependence of the equivalent inductance in an electric circuit composed of a feeder line and an inductance suppression unit.
  • the frequency characteristic of the impedance Z 0 expressed by Equation 2 is shown.
  • the impedance Z 0 of the formula 2 are to become only the imaginary part, in the graph of FIG. 5, which shows information about the impedance Z 0 and the equivalent inductance (reactance).
  • the frequency characteristic in the case of the impedance Z 0 is shown by a solid line.
  • the equivalent inductance is positive when the frequency is 9.95 kHz or less, which is the resonance frequency, and the equivalent inductance is negative when the frequency is greater than 9.95 kHz.
  • the impedance Z 0 is a capacitive reactance. Therefore, for example, when the power supply frequency is 10 kHz, the electric circuit composed of the power supply line 21 and the inductance suppression unit 31 looks like a capacitor (capacitive), and the equivalent inductance is ⁇ 104 ⁇ H. That is, when the feeder line 21 is viewed from the feeding point A, the equivalent inductance is inductive if the resonance frequency of La and Ca is higher than the feeding frequency, and is capacitive if it is low.
  • the capacitive degree of the equivalent inductance at the feeding frequency increases when the resonance frequency determined by La and Ca is close to the feeding frequency, and the capacitive degree decreases when the resonance frequency is far away. Therefore, it is possible to adjust the degree of the capacitance by changing the resonance frequency.
  • the resonance frequency can be adjusted by changing the capacitance Ca of the capacitor 31a, or changing the inductance La by changing the thickness of the spacer 312.
  • the inductance La, the capacitance Ca, and the like are set so that the resonance frequency of the electric circuit formed by the power supply line 21 and the inductance suppressing unit 31 is lower than the power supply frequency of the power supply line 21.
  • FIG. 6 is a diagram for explaining a configuration in the case where an 80 m feed line is further laid at the tip of the inductance suppression unit.
  • the inductance of 80 m of the feeder line 21 is 104 ⁇ H. Therefore, the impedance Z 80 when the feeder line 21 is viewed from the feeder point A when the feeder line 21 of 80 m is laid before the inductance suppression unit 31 is represented by a broken line in FIG.
  • the inductance of 80 m of the feeder line 21 is canceled out.
  • the resistance component in the impedance Z 80 can be ignored around the power supply frequency of 10 kHz, and the main component is the inductance.
  • This V 80 is accumulated at the feeding point A, and it is assumed that the component voltage rating of the feeding device 11 and the withstand voltage of the feeding line 21 are exceeded.
  • the inductance suppression unit 31 is arranged, so that V 80 is canceled and becomes 0 V, which greatly contributes to the reduction of the output voltage of the power feeding device 11.
  • FIG. 7 is a diagram showing an inductance reduction model of the non-contact power feeding system according to the embodiment of the present invention.
  • the total equivalent inductance LLT of the entire feeder line 21 viewed from the feeder point A is LL1 as the inductance of the feeder line 21 on the feeder point A side from the arrangement point of the inductance suppression unit 31, and the feeder line ahead of the arrangement point.
  • LLT LL1 ⁇ LLs + LL2. Therefore, the total equivalent inductance LLT of the entire feeder line 21 as viewed from the feeding point A can be reduced by LLs. Therefore, it is possible to suppress the voltage increase at the feeding point A.
  • FIG. 8 is a diagram illustrating a modification of the inductance reduction model of the non-contact power feeding system according to the embodiment of the present invention.
  • the model in the figure is different from the model shown in FIG. 7 in that a plurality of inductance suppression units 31 are arranged at a predetermined interval.
  • a plurality of inductance suppression units 31 are arranged at every predetermined interval.
  • it is possible to locally suppress the voltage increase of the feeder line between the adjacent inductance suppression units 31. Therefore, it is effective not only for voltage suppression at the feeding point A but also for reducing the withstand voltage of the feeding line 21 at an arbitrary point.
  • the voltage in each power feeding system portion does not accumulate, and as a result, the output voltage of the power feeding device 11 can be greatly reduced.
  • the EI type core 31b around which the coil 314 is wound is electromagnetically coupled to the power feeding line 21 and fixedly disposed on the power feeding line 21.
  • the operation of arranging the EI core 31b is facilitated without dividing or dividingly connecting the power supply line 21.
  • the extending direction of the feeder line 21 intersects the axial direction of the coil 314 and the impedance of the inductance suppressing unit 31 viewed from the feeding point A indicates a capacitive reactance, the feeding line A or the feeding line It is possible to suppress the total equivalent inductance at the midway point 21.
  • this invention can be implement
  • a coil 314 that is wound around 31b and electromagnetically coupled to the power supply line 21 by crossing the axial direction of the power supply line 21 and having a capacitor 31a connected to both ends is connected to the middle of the power supply line 21.
  • the impedance of the electric circuit composed of the EI type core 31b, the coil 314, and the capacitor 31a which is fixedly arranged at the position and viewed from the feeding point A side, indicates capacitive reactance and is conveyed from the feeding line 21 by electromagnetic induction.
  • a non-contact power feeding method in which an alternating current is supplied to the power feeding line 21 so that the power receiving core 41 of the carriage 4 receives the non-contact power is also included in the scope of the present invention.
  • that the extending direction of the feeder line 21 and the axial direction of the coil 314 intersect represents a state other than the state in which the extending direction vector and the axial direction vector are parallel. It is. That is, the intersection means that there is a two-dimensional projection plane where the extending direction vector and the axial direction vector intersect.
  • the present invention can be used for a non-contact power supply system and a non-contact power supply method for an automated guided vehicle for transferring a load, and particularly for a semiconductor process or a flat panel display process that requires a large number of steps and a high dust-free degree. It can utilize for the non-contact electric power feeding system and non-contact electric power feeding method for a conveyance vehicle used in a clean room.

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  • Power Engineering (AREA)
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  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
PCT/JP2013/001401 2012-03-29 2013-03-06 Système d'alimentation électrique sans contact et procédé d'alimentation électrique sans contact Ceased WO2013145573A1 (fr)

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US20160276396A1 (en) * 2013-12-12 2016-09-22 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
CN108599401A (zh) * 2018-07-10 2018-09-28 中惠创智无线供电技术有限公司 一种轨道无线供电装置
US20190103430A1 (en) * 2013-12-12 2019-04-04 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
US12549035B2 (en) 2021-11-30 2026-02-10 Murata Machinery, Ltd. Contactless power feeding apparatus and contactless power feeding method

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JP7344480B2 (ja) * 2020-05-07 2023-09-14 村田機械株式会社 無線センサ

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JP2009072011A (ja) * 2007-09-14 2009-04-02 Shinko Electric Co Ltd 電力供給システム

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JP2009254031A (ja) * 2008-04-02 2009-10-29 Hitachi Plant Technologies Ltd 非接触給電装置

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JP2005162119A (ja) * 2003-12-05 2005-06-23 Daifuku Co Ltd 無接触給電設備
JP2009072011A (ja) * 2007-09-14 2009-04-02 Shinko Electric Co Ltd 電力供給システム

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160276396A1 (en) * 2013-12-12 2016-09-22 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
US9780139B2 (en) * 2013-12-12 2017-10-03 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
US20190103430A1 (en) * 2013-12-12 2019-04-04 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
US10680022B2 (en) * 2013-12-12 2020-06-09 Sony Corporation Solid state imaging device, manufacturing method of the same, and electronic equipment
CN108599401A (zh) * 2018-07-10 2018-09-28 中惠创智无线供电技术有限公司 一种轨道无线供电装置
CN108599401B (zh) * 2018-07-10 2024-06-11 中惠创智（深圳）无线供电技术有限公司 一种轨道无线供电装置
US12549035B2 (en) 2021-11-30 2026-02-10 Murata Machinery, Ltd. Contactless power feeding apparatus and contactless power feeding method

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