WO2013048092A2 - 공진주파수 변화에도 전송효율 안정성을 유지하는 급집전 시스템 - Google Patents
공진주파수 변화에도 전송효율 안정성을 유지하는 급집전 시스템 Download PDFInfo
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- 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
- B60L9/28—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines polyphase motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B60L53/30—Constructional details of charging stations
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- B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
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- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
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- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- Y02T10/00—Road transport of goods or passengers
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- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a power supply system that maintains stability of transmission efficiency even with a change in resonance frequency.
- the present invention relates to maintaining stability in power transmission efficiency from a power supply device to a current collector even when a voltage or current changes due to a change in resonance frequency. It relates to a power supply system.
- the device for obtaining the maximum power transmission efficiency by accurately fixing the position of the power supply device and the current collector and increasing the Q-factor value for optimal power transfer between the power supply device and the current collector has been proposed.
- the resonant frequency of the system may vary depending on the manufacturing process, and may vary due to the error of components used.
- the power feeding device is fixed but it is very difficult to accurately position the current collecting device. If more than one is installed to further collect current may occur. In such cases, the resonant frequency of the system may vary, and thus, there is a problem in that the power transmission efficiency from the power supply device to the current collector device is greatly reduced.
- the present invention was devised to solve such a problem, and by setting the Q-factor of the power supply system to a low value, the power transmission from the power supply device to the current collector even in a situation where the voltage or current changes due to the change of the resonance frequency.
- the object is to provide a power supply system for maintaining stability in efficiency.
- a power feeding device for supplying power to a moving body in a magnetic induction method, the power supply core having a magnetic pole for forming a magnetic field in a specific direction; And feeding coils in which currents are disposed so that adjacent magnetic poles of the feeding cores have different polarities, and a Q factor due to the feeding coil current is less than 100, and the Q factor is
- w is the angular frequency of the feed coil current
- L s is the inductance of the feed coil
- R s is the resistance of the feed coil.
- a power feeding device for supplying power to the moving body in a magnetic induction method, the feeding core having a plurality of magnetic poles parallel to each other and parallel to the moving direction of the moving body; And a feeding coil disposed to extend along a moving direction of the moving body and having a current flowing such that adjacent magnetic poles of the feeding cores have different polarities in a plane perpendicular to the moving direction of the moving body.
- factor is less than 100, and the Q factor is Where w is the angular frequency of the feed coil current, L s is the inductance of the feed coil, and R s is the resistance of the feed coil.
- the cross section perpendicular to the moving body moving direction of the magnetic pole may have a 'U' shape, and the feed coil may be disposed in parallel to the moving body moving direction inside the U-shaped magnetic pole.
- the cross section perpendicular to the moving direction of the moving body of the magnetic pole may have two 'U' shapes left and right adjacent to each other, and the feeding coil may be disposed in the U-shaped magnetic pole in parallel to the moving direction of the moving body.
- the power feeding core may have a form in which a power feeding module having a plurality of magnetic poles parallel to and parallel to the moving body moving direction is arranged in series along the moving body moving direction.
- a power feeding device for supplying power to the moving body in a magnetic induction method, the feeding core having one or more magnetic poles disposed in series along the moving direction of the moving body; And a feeding coil disposed in parallel with the moving direction of the moving body on the left and right of the magnetic pole and intersecting with each other between the magnetic poles, and a current flowing through the moving core so that neighboring magnetic poles of the feeding cores have different polarities.
- the Q factor due to coil current is less than 100, and the Q factor is Where w is the angular frequency of the feed coil current, L s is the inductance of the feed coil, and R s is the resistance of the feed coil.
- the cross section perpendicular to the moving direction of the magnetic pole of the magnetic pole has an 'I' shape, and the feeding coils are arranged to intersect with each other between the magnetic poles in parallel with the moving body moving direction on the left and right sides of the magnetic poles and to each other. It is preferable that the coils flow in opposite directions.
- the power feeding device may further include a linear magnetic shield member installed in the road progress direction.
- the power feeding core may be configured such that the power feeding module having one or more magnetic poles arranged in series along the moving body moving direction is arranged in series along the moving body moving direction.
- Each of the power supply modules may include core connections at both front and rear ends, and the power supply core modules may be connected to each other by the core connections to form a row in series along a road traveling direction.
- the feed cores may be arranged to be spaced apart at regular intervals so as to accommodate thermal expansion and thermal contraction.
- the feeding core may be provided with a fiber reinforced plastic (FRP) on the top or bottom.
- FRP fiber reinforced plastic
- the power feeding core may have a width perpendicular to the moving body moving direction of one half or less of the interval between the centers of the magnetic poles.
- the length of the said magnetic pole in the moving body moving direction is 2 times or more of the distance between the adjacent ends of the said adjacent magnetic pole.
- a current collector installed on a mobile body, which is supplied with electric power from a power feeding device installed along a traveling path of the mobile body in a self-inducing manner, a current collecting core installed at a predetermined interval apart from the power feeding device at the bottom of the mobile body; And a current collector coil installed in a loop shape on the current collector core to flow an induction current induced from a power supply device, wherein the Q factor due to the current collector coil current is less than 100, and the Q factor is And w is the angular frequency of the current collector coil current, L L is the inductance of the current collector coil, and R L is the resistance of the current collector coil.
- the current collector core may be a plate type or a lattice type.
- the current collector may further include a loop type magnetic shield member around the current collector core.
- the Q-factor of the power supply system by setting the Q-factor of the power supply system to a low value, it is possible to maintain stability in power transmission efficiency from the power supply device to the current collector even in a situation where voltage or current changes due to a change in resonance frequency. It is effective to provide a power supply system.
- FIG. 1 is a view showing the configuration of a wireless power transmission system in an electric vehicle.
- FIG. 2 is a schematic diagram of a power feeding device and a current collecting device.
- FIG. 3 is a sectional view of the power supply device and the current collector viewed from the front;
- FIG. 4 is a view showing a cross-sectional structure of a current collector applied to an electric vehicle.
- FIG. 5 is a magnetic field distribution diagram without applying a shaped magnetic field in resonance technique.
- FIG. 6 is a magnetic field distribution diagram in a state in which a shaped magnetic field in resonance technique is applied.
- FIG. 7 is a magnetic field distribution diagram after applying a shaped magnetic field in resonance technique as a magnetic flux density vector.
- FIG. 8 is a diagram illustrating an equivalent cycle of a wireless power transmission system having a current source as a power source of a power feeding device.
- FIG. 9 is a diagram illustrating an equivalent cycle of a wireless power transmission system having a voltage source as a power source of a power supply device.
- FIG. 10 is a view showing the structure of an I-type power feeding device.
- FIG. 11 is a view showing an embodiment in the case where the current collector core is formed in a lattice type in the current collector;
- FIG. 12 is a view showing a power supply module modularized in the size of the magnetic pole interval to facilitate the construction of the power supply device on a curved road.
- FIG. 13 is a view showing an embodiment of a structure to cope with the expansion and contraction problem caused by the temperature change of the power feeding device.
- FIG. 14 is a view showing the structure of a W-type power feeding device.
- Fig. 15 is a diagram showing a self-shielding method of a type I power feeder and a current collector.
- Fig. 16 is a diagram showing the transmission efficiency according to the Q factor Q s of the power feeding device when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 20 kHz.
- FIG. 17 is a diagram showing the transmission efficiency according to the Q factor Q s of the power feeding device when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 18 kHz.
- 18 is a diagram showing transmission efficiency according to the Q factor Q L of a current collector when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 20 kHz.
- 19 is a diagram showing transmission efficiency according to the Q factor Q L of the current collector when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 18 kHz.
- FIG. 1 is a view showing the configuration of a wireless power transmission system in an electric vehicle.
- a power source from the utility company (60 Hz in the drawing) is applied to the inverter, which generates a current at the wireless power transmission frequency (20 kHz in the drawing).
- the generated current flows through the power supply coil 120 of the power supply device.
- a magnetic field is generated, and a part of the generated magnetic field generates power due to the current collector coil in the current collector 131.
- the generated power is used to charge the battery 133 and drive the motor 134 via the regulator 132.
- the inverter 110 which is a source responsible for supplying power, functions to generate a signal of a wireless power transmission frequency band.
- the feeding coil 120 serves as a kind of transmitting antenna, and shaped magnetic field in resonance (SMFIR) technology, which determines the shape of the magnetic field through a non-metal magnetic material such as metal or ferrite, is essential. to be.
- the core element of the current collector 131 which is a transmitting end receiving electric power, is a current collector coil, and since the current collector device is also hard to make a magnetic field path as desired, the current collector core using a metal or non-metal magnetic material like a power supply device. SMFIR technology is applied. Load is composed of a motor 134 or a battery 133 in the case of an electric vehicle, and consumes the generated power.
- FIG. 2 is a schematic diagram of a power feeding device and a current collecting device.
- FIG 3 is a cross-sectional view of the power supply device and the current collector viewed from the front.
- the power feeding core 311 of the power feeding device has a flat plate shape as shown in the figure, and thus it is difficult to concentrate the direction of the magnetic field in a certain direction, the magnetic field generated from the feeding coil 312 buried underground passes through the current collecting coil 322. As a result, a large loop is formed as an arrow 10 as a whole. In this case, the concentrated power transfer capability to the current collector is reduced.
- the feed core 311 and the current collector core 321 for adjusting the transfer direction of the magnetic field may use ferrite. As such, magnetic field shape control using magnetic ferrite is an essential element for shaped magnetic field in resonance (SMFIR) technology.
- FIG. 4 is a diagram illustrating a cross-sectional structure of the current collector core 421 and the current collector coil 422 applied to the electric vehicle 20.
- a flat feed core 411 and a feed coil 412 are embedded.
- FIG. 5 is a magnetic field distribution diagram without applying a shaped magnetic field in resonance (SMFIR) technique.
- SMFIR shaped magnetic field in resonance
- a magnetic field is formed in a full 360 degree orientation about the feed coil 510 through which current flows, so that the total magnetic field is made up of the sum of the magnetic fields by the respective wires.
- the power supply device (transmitter coil) and the current collector (receiver coil) each have a rounded magnetic field distribution, and the magnetic field distribution is formed in a form in which two circles are close to each other.
- SMFIR shaped magnetic field in resonance
- the magnetic field is not radiated 360 degrees in all directions, and the magnetic field is well formed where the magnetic body is, and where it is not. As shown in the figure below, the magnetic field is formed flat along a specific shape at some positions 610, because there is a magnetic body at that position.
- This technology essentially improves power delivery capacity and efficiency by creating a path for power delivery through magnetic field formation.
- a current collector in a limited space (height), such as when installing a current collector in the lower part of a vehicle, it is possible to prevent the magnetic field from spreading out and affecting other devices or materials. It can prevent eddy current and heat generation by this, and it can be a fundamental measure to minimize the effect of magnetic field on the human body.
- FIG. 7 is a diagram illustrating magnetic field distribution as a magnetic flux density vector after applying a shaped magnetic field in resonance (SMFIR) technique.
- SMFIR shaped magnetic field in resonance
- the figure below shows the vector of magnetic field distribution after SMFIR technology is applied to the feeder and current collector.
- the upper U-shaped structure 710 is a metal plate that is a vehicle body, and when the current collector is mounted on the lower part of the vehicle, SMFIR technology is applied to prevent a magnetic field directly entering the vehicle.
- SMFIR technology When a magnetic field is incident perpendicularly to a metal plate, heat is generated by an eddy current, which is a big limitation in a system using a large power such as a vehicle.
- the application of SMFIR technology has the great advantage that the magnetic field can be shaped so that the magnetic field does not go to the metal plate.
- the thick arrow 720 on the left side of the arrow drawing the loop shape represents the path of the magnetic field transmitted from the power feeding device to the current collector.
- the SMFIR technology makes the path of the magnetic field the designer's desired form to increase the current collection capacity and current collection efficiency, and to reduce the leakage magnetic field that is largely represented by the thin arrow (730) on the right side. Problems can also be reduced at source.
- FIG. 8 is a diagram illustrating an equivalent circuit of a wireless power transmission system having a current source as a power source of a power feeding device
- FIG. 9 is a diagram showing an equivalent circuit of a wireless power transmission system having a voltage source as a power source of a power feeding device.
- the left side 910 represents an equivalent circuit of a power supply device
- the right side 920 represents an equivalent circuit of a current collector.
- the Q factor of the power supply device equivalent circuit is Q s and the Q factor of the current collector device equivalent circuit is Q L.
- FIG. 10 is a view showing the structure of an I-type power feeding device.
- the power feeding device supplies power to the moving body in a magnetic induction manner
- the current collector is attached to the moving body to collect power from the power feeding device in a magnetic induction manner to charge a battery or the like.
- a plan view 31, a side view 32, and a front view 33 of an I-type power supply device and a current collector that collects electric power therefrom are shown in cross-sectional view.
- the figure shows an example of the type I power feeding device, in which the power feeding device is embedded in the roadway 1.
- the I-type feeding device includes a feeding core 1011 having a plurality of poles 1012 disposed in series along a moving direction of the moving body, and adjacent poles 1012 of the feeding cores along the moving direction of the moving body have different polarities. That is, it includes a feed line 1020 disposed so that the N pole and the S pole alternately occur. In the embodiment of this figure, two feed lines 1020 flow in opposite directions to each other, so that magnetic fields 50 in opposite directions above the continuous magnetic poles 1012 are shown in side view 32. As a result, the N pole and the S pole are alternately generated. In this manner, power is supplied to the moving body traveling thereon in a magnetic induction manner, and the current collector 1040 collects power therefrom.
- 'I-type' is because the cross-section of the magnetic pole 1012 forms an 'I' shape, as shown in the front view 33.
- 'type I' is also sufficiently possible, which will be collectively referred to as 'type I'.
- the power feeding core preferably has a width perpendicular to the moving direction of the moving body of not more than one half of the interval between the magnetic pole centers.
- the width of the magnetic pole is significantly reduced, and the N pole and the S pole are alternately generated in the direction of the road, thereby significantly reducing the EMF on the left and right of the feed line. Feeder installation costs will also be reduced.
- the narrow width of the feeder line using the narrow I-type magnetic pole it is possible to reduce the left and right width of the current collector installed in the vehicle, and if the current collector is more than a certain left and right width in such a range, compared to the other feeder lines of other structures Since the allowable deviation can be increased, a wider allowable left and right deviation characteristic can be obtained compared to other structures.
- the length of the magnetic pole in the moving direction of the moving body is preferably at least twice the distance between the adjacent ends of the adjacent magnetic poles.
- the feed core may be configured such that the feed module having one or more magnetic poles arranged in series along the moving body moving direction is arranged in series along the moving body moving direction.
- the feeding core with the magnetic pole may be modularized so that each module is connected in series.
- FIG. 11 is a view showing an embodiment in the case where the current collector core 1051 is configured in a lattice type in the current collector 1050.
- the interval between the grate is small enough to be 1/2 or less of the gap interval 1031, and there is no significant effect on the electrical performance.
- FIG. 12 is a view showing a power supply module modularized in the size of the magnetic pole interval to facilitate the construction of the power supply device on a curved road.
- a top view 1210 and a side view 1220 of each feed core module are shown. Both ends of the power feeding core module are provided with connection members 1211 and 1212 having a male and female structure that can be fastened mechanically and have a large contact area magnetically. In this configuration, the feed core module is combined in the field, and the angle is only slightly changed along the road bent in the left and right directions.
- a plan view 1230 and a side view 1240 are shown in which the feed core module is coupled by the connecting members 1211 and 1212.
- FIG. 13 is a view showing an embodiment of a structure to cope with the problem of expansion and contraction according to the temperature change of the power feeding device.
- a plan view 1310, a side view 1330, and a feed core length 1311 at that time when the power feeding device is thermally contracted are shown, and a plan view 1320, a side view 1340, and a feed at that time when the thermal expansion is performed. Core length 1321, and front view 1350 are shown.
- the road should be able to withstand the changes of -20 ⁇ + 80 degrees Celsius, and the magnetic materials and cables constituting the feeding device, the cable protection devices such as FRP and PVC pipes, the asphalt and the cement, and the thermal expansion coefficient There are other things to consider.
- the waterproof properties should be maintained in this process.
- FIG. 13 shows an example in which the connecting members 1332 made of the same magnetic material are provided between the power feeding cores 1331 in the road advancing direction.
- the fiber-reinforced plastic (FRP, fiber reinforced plastic) (1233) is disconnected and fastened but the fastening portion of the O-ring treatment (1334) has been shown.
- FRP fiber-reinforced plastic
- shrinkage tubes, bond connections, or the like can be used for fastening FRP or PVC pipes.
- it is not necessary to fasten with a flexible connecting member every time it is also possible to use a flexible connecting member once every few meters to several tens of meters. In general, however, the cable is flexible, so this action is not necessary separately.
- FIG. 14 is a view showing the structure of a W-type power feeding device.
- a plan view 41, a side view 42, and a front view 43 of a W-type power feeding device and a current collecting device for collecting electric power therefrom are shown in cross-sectional view.
- This drawing shows an example of the W-type power feeding device embedded in the road 1.
- the W-type power feeding device includes a feeding core 1111 having a plurality of poles 1112 parallel to and parallel to the moving direction of the moving body, and adjacent magnetic poles of the feeding cores have different polarities in a plane perpendicular to the moving direction of the moving body. That is, it includes a feed line 1120 extending along the moving body moving direction so that the N pole and the S pole alternately occur. As shown in the front view 43, the two feed lines 1120 flow in opposite directions to each other, and as shown in the front view 43, parallel to and parallel to the moving direction of the moving body.
- the magnetic poles 60 in opposite directions are generated in the magnetic poles 1112 that extends smoothly, such that the N pole and the S pole are alternately generated.
- the term 'W' is because the cross section of the power feeding core 1111 including the magnetic pole 1112 forms a 'W' shape as shown in the front view 43.
- the shape is close to the 'U' shape, but will be collectively referred to as 'W'.
- the W-type power feeding device may be configured in such a manner that the power feeding cores of the U-type power feeding device are adjacent to be parallel to the moving body moving direction.
- the power feeding core may be configured in a form in which the power feeding module having a plurality of magnetic poles parallel to and parallel to the moving body moving direction are arranged in series along the moving body moving direction.
- the feeding core with the magnetic pole may be modularized so that each module is connected in series.
- Fig. 15 is a diagram showing a self shielding method of the I-type power supply device and the current collector.
- Type I current collectors can be reduced in size by about half the width of the vehicle, which provides space for self-shielding. Therefore, as shown in FIG. 15, when the surroundings are surrounded by the loop type magnetic shielding material 1501, the magnetic flux is magnetically grounded along the magnetic shielding loop 1501. Self-shielding can only be done along the sides, but can also be done by covering the top.
- the magnetic poles are alternately generated at a predetermined interval so that an electromagnetic field (EMF) is generated in the lateral direction.
- EMF electromagnetic field
- FIG. 15 when the magnetic shielding wire 1502 is provided in the longitudinal direction, Grounding is achieved to achieve a self-shielding effect.
- 16 is a diagram illustrating a transmission efficiency according to the Q factor Q s of the power feeding device when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 20 kHz.
- the resonant frequency of the system may vary depending on the manufacturing process and may vary due to the error of the components used.
- the power supply device is fixed like a wireless charging electric vehicle, but the current collector is moved, or when there is one power supply device but the current collector further collects, the resonant frequency of the system may vary.
- the sensitivity surface of the power transmitting together a case where Q s is less than 100 more advantageous than the case where Q s is greater than 100, and is a view showing this Fig. 17, it will be described below .
- FIG. 17 is a diagram showing the transmission efficiency according to the Q factor Q s of the power feeding device when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 18 kHz.
- the current collector is further collected.
- the Q factor value of the power feeding device it is preferable to use the Q factor value of the power feeding device to 100 or less for stability of power transmission efficiency.
- the pressure resistance that a component can withstand is also an important factor, so in the present invention, it is also preferable to use the Q factor value of the power supply device to 100 or less for this purpose.
- FIG. 18 is a diagram illustrating a transmission efficiency according to the Q factor Q L of the current collector when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 20 kHz.
- Q L 115
- FIG. 19 is a diagram showing the transmission efficiency according to the Q factor Q L of the current collector when a current signal of 20 kHz is applied as an operating frequency when the resonance frequency of the power supply system is 18 kHz.
- the resonant frequency (18 kHz) is out of the operating frequency (20 kHz)
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Abstract
Description
Claims (17)
- 이동체에 자기유도방식으로 전력을 공급하는 급전장치로서,이동체 진행방향과 평행하고 서로 나란한 다수의 자극을 구비한 급전코어; 및이동체 진행방향을 따라 연장되어 배치되며, 이동체 진행방향에 수직인 면에서 상기 급전코어의 서로 이웃하는 자극이 다른 극성을 갖도록 전류가 흐르는 급전코일을 포함하고,상기 급전코일 전류에 의한 Q 팩터(factor)는 100 미만이며,상기 w는 상기 급전코일 전류의 각주파수,상기 L s 은 상기 급전코일의 인덕턴스,상기 R s은 상기 급전코일의 저항인 것을 특징으로 하는 급전장치.
- 청구항 2에 있어서,상기 자극의 이동체 진행방향과 수직인 단면은 'U'자형의 형태를 가지고,상기 급전코일은 상기 U자형 자극 내부에 이동체 진행방향에 평행하게 배치되는 것을 특징으로 하는 급전장치.
- 청구항 2에 있어서,상기 자극의 이동체 진행방향과 수직인 단면은 두 개의 'U'자가 좌우로 인접한 형태를 가지고,상기 급전코일은 상기 각 U자형 자극 내부에 이동체 진행방향에 평행하게 배치되는 것을 특징으로 하는 급전장치.
- 청구항 2에 있어서,상기 급전코어는,이동체 진행방향과 평행하고 서로 나란한 다수의 자극을 구비한 급전모듈이 이동체 진행방향을 따라 직렬로 배치된 형태인 것을 특징으로 하는 급전장치.
- 이동체에 자기유도방식으로 전력을 공급하는 급전장치로서,이동체 진행방향을 따라 직렬로 배치된 하나 이상의 자극을 구비한 급전코어; 및상기 자극 좌우에서 이동체 진행방향과 나란하고 상기 자극사이에서 서로 교차하도록 배치되며, 이동체 진행방향을 따라 상기 급전코어의 서로 이웃하는 자극이 다른 극성을 갖도록 전류가 흐르는 급전코일을 포함하고,상기 급전코일 전류에 의한 Q 팩터(factor)는 100 미만이며,상기 w는 상기 급전코일 전류의 각주파수,상기 L s 은 상기 급전코일의 인덕턴스,상기 R s은 상기 급전코일의 저항인 것을 특징으로 하는 급전장치.
- 청구항 6에 있어서,상기 자극의 이동체 진행방향에 수직인 단면은 'I' 자 형상이고,상기 급전코일은,상기 각 자극 좌우에서 이동체 진행방향과 나란하고 상기 각 자극 사이에서 서로 교차하도록 배치되며상기 각 자극 좌우의 급전코일에는 서로 반대방향의 전류가 흐르는 것을 특징으로 하는 급전장치.
- 청구항 6에 있어서,도로진행방향으로 설치된 일자형의 자기차폐 부재를 더 포함하는 것을 특징으로 하는 급전장치.
- 청구항 6에 있어서,상기 급전코어는,이동체 진행방향을 따라 직렬로 배치된 하나 이상의 자극을 구비한 급전모듈이 이동체 진행방향을 따라 직렬로 열을 이루도록 배치된 형태인 것을 특징으로 하는 급전장치.
- 청구항 9에 있어서,상기 각 급전모듈은,전후 양단에 코어연결부를 구비하고,각 급전코어 모듈은 상기 코어연결부에 의해 서로 연결되어 도로 진행방향을 따라 직렬로 열을 이루도록 배치되는 것을 특징으로 하는 급전장치.
- 청구항 9에 있어서,상기 급전코어는,열 팽창 및 열 수축을 수용할 수 있도록, 일정간격 이격된 상태로 배치되어 있는 것을 특징으로 하는 급전장치.
- 청구항 9에 있어서,상기 급전코어는,상부 또는 하부에 유리섬유보강 플라스틱(FRP, fiber reinforced plastic)이 설치된 것을 특징으로 하는 급전장치.
- 청구항 6에 있어서,상기 급전코어는,이동체 진행방향에 수직인 폭이 상기 자극 중심간 간격의 2분의 1 이하인 것을 특징으로 하는 급전장치.
- 청구항 6에 있어서,상기 자극의 이동체 진행방향으로의 길이는, 상기 이웃한 자극의 인접 단부 간 거리의 2배 이상인 것을 특징으로 하는 급전장치.
- 청구항 15에 있어서,상기 집전코어는 평판(plate)형 또는 격자(lattice)형인 것을 특징으로 하는 집전장치.
- 청구항 15에 있어서,집전코어 주위에 루프형의 자기차폐 부재를 더 포함하는 것을 특징으로 하는 집전장치.
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Application Number | Priority Date | Filing Date | Title |
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EP12837326.3A EP2763281A4 (en) | 2011-09-26 | 2012-09-25 | CAPTURE POWER SUPPLY SYSTEM TO MAINTAIN STABILITY OF TRANSMISSION EFFICIENCY INSTEAD OF RESONANT FREQUENCY CHANGES |
SG11201400970YA SG11201400970YA (en) | 2011-09-26 | 2012-09-25 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
CN201280055947.1A CN103931079B (zh) | 2011-09-26 | 2012-09-25 | 共振频率变化也可维持传输效率稳定性的供集电系统 |
AU2012317038A AU2012317038B2 (en) | 2011-09-26 | 2012-09-25 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
US14/347,235 US10230268B2 (en) | 2011-09-26 | 2012-09-25 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
JP2014533194A JP2014535254A (ja) | 2011-09-26 | 2012-09-25 | 共振周波数の変化にも送信効率の安定性を維持する給集電システム |
US16/247,794 US10483799B2 (en) | 2011-09-26 | 2019-01-15 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
US16/247,766 US10476303B2 (en) | 2011-09-26 | 2019-01-15 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
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KR20110097190 | 2011-09-26 | ||
KR10-2011-0097190 | 2011-09-26 |
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US14/347,235 A-371-Of-International US10230268B2 (en) | 2011-09-26 | 2012-09-25 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
US16/247,766 Division US10476303B2 (en) | 2011-09-26 | 2019-01-15 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
US16/247,794 Division US10483799B2 (en) | 2011-09-26 | 2019-01-15 | Power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in resonant frequency |
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WO2013048092A3 WO2013048092A3 (ko) | 2013-05-23 |
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CN (1) | CN103931079B (ko) |
AU (1) | AU2012317038B2 (ko) |
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- 2012-09-25 JP JP2014533194A patent/JP2014535254A/ja active Pending
- 2012-09-25 US US14/347,235 patent/US10230268B2/en active Active
- 2012-09-25 CN CN201280055947.1A patent/CN103931079B/zh active Active
- 2012-09-25 WO PCT/KR2012/007723 patent/WO2013048092A2/ko active Application Filing
- 2012-09-25 KR KR1020120106773A patent/KR101379792B1/ko active IP Right Grant
- 2012-09-25 SG SG11201400970YA patent/SG11201400970YA/en unknown
- 2012-09-25 EP EP12837326.3A patent/EP2763281A4/en not_active Withdrawn
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2019
- 2019-01-15 US US16/247,794 patent/US10483799B2/en active Active
- 2019-01-15 US US16/247,766 patent/US10476303B2/en active Active
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EP2814046A3 (en) * | 2013-06-11 | 2015-04-29 | Kabushiki Kaisha Toshiba | Leakage preventing device of electromagnetic wave |
Also Published As
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CN103931079A (zh) | 2014-07-16 |
US10483799B2 (en) | 2019-11-19 |
EP2763281A2 (en) | 2014-08-06 |
EP2763281A4 (en) | 2016-01-20 |
US20190207421A1 (en) | 2019-07-04 |
SG11201400970YA (en) | 2014-09-26 |
KR101379792B1 (ko) | 2014-04-02 |
WO2013048092A3 (ko) | 2013-05-23 |
US10476303B2 (en) | 2019-11-12 |
AU2012317038B2 (en) | 2014-10-30 |
CN103931079B (zh) | 2017-08-22 |
JP2014535254A (ja) | 2014-12-25 |
US20190267839A1 (en) | 2019-08-29 |
US20140319927A1 (en) | 2014-10-30 |
US10230268B2 (en) | 2019-03-12 |
AU2012317038A1 (en) | 2014-05-08 |
KR20130033332A (ko) | 2013-04-03 |
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