WO2020209462A1 - 리액터 및 그 제조 방법 - Google Patents
리액터 및 그 제조 방법 Download PDFInfo
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- WO2020209462A1 WO2020209462A1 PCT/KR2019/016089 KR2019016089W WO2020209462A1 WO 2020209462 A1 WO2020209462 A1 WO 2020209462A1 KR 2019016089 W KR2019016089 W KR 2019016089W WO 2020209462 A1 WO2020209462 A1 WO 2020209462A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- 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
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
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- 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
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- 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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
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- 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
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Definitions
- N is the number of windings (Winding Turns)
- ⁇ is the permeability (permeability)
- Ac is the cross-sectional area of the core
- MPL is the magnetic path length (Magnetic path length)
- L is the inductance ( Inductance).
- the yoke core may further include a connection means for connecting the partial cores to a connection portion between the three hexagonal partial cores or a connection portion between the three parallelogram partial cores.
- the yoke core includes three pentagonal partial cores and three rectangular partial cores, or includes three equilateral triangle partial cores and three trapezoidal partial cores, and each of the pentagonal partial cores has an inner angle of 120°C. , 90° C., 120° C., 90° C., and 120° C. are maintained and disposed between two rectangular partial cores, and each of the trapezoidal partial cores may be disposed between two equilateral triangle partial cores.
- the partial cores may be formed using at least one of a metal powder or a steel core.
- a method of manufacturing a reactor according to another embodiment of the present invention includes the steps of forming a yoke core having a rectangular shape in a method of manufacturing a three-phase reactor having the same inductance in each phase; And forming a leg core on which the coil is wound, wherein the forming of the leg core is characterized in that it is formed using a plurality of cores having different permeability.
- a reactor includes a sensor unit for measuring a current or voltage flowing through the reactor; A controller configured to calculate a gap size of a core for adjusting an inductance value of the reactor based on the signal measured by the sensor unit; And an operation unit configured to adjust an inductance value of the reactor in response to the measured signal by adjusting a gap size of the core according to a control signal corresponding to the calculated gap size.
- an upper yoke core and a lower yoke core may have the same shape or different shapes.
- the size of the gap of the core may be adjusted by a control signal corresponding to the calculated gap size so that the magnetic path length of each phase is the same.
- the gap size of the core may be adjusted by a control signal corresponding to the calculated gap size so that the magnetic path length of each phase is the same.
- the inductance value of the reactor may be adjusted by moving a triangle corresponding to the center of the Y-type or some Y-type including the center of the Y-type up and down. .
- a yoke core shape in a Y-shaped or delta-shaped (or triangular) shape so that the magnetic flux length in each phase is the same, it is possible to provide the same or uniform inductance in each phase of the three-phase reactor. have.
- the heating temperature generated in the coils of each phase is uniformly generated, the current density can be improved compared to the conventional rectangular reactor.
- a maximum 1/2 size can be reduced than that of a conventional rectangular yoke core, and thus the material cost, size, and weight of the core can be reduced.
- the present invention may be structurally more stable than a rectangular shape previously used for vibration problems caused by external influences when transporting domestic or overseas.
- the reactor when fixing the reactor inside the inverter, it is usually fixed with 4 screws.
- the reactor may shake due to external vibration, and the reactor is the second equipment that weighs the second in the inverter.
- Reactor vibrations can affect other components. Therefore, since the present invention provides a more stable structure than the existing rectangular shape, it is more stably fixed to external vibrations, so that the product can be safely delivered.
- the present invention adjusts the inductance value according to the time in consideration that the starting time of the motor is within 60 seconds in the case of the starting reactor, for example, by lowering the inductance value, reducing the load on the starting current of the motor, Life can be extended.
- the present invention adjusts the inductance value according to the time in consideration that the starting time of the motor is within 60 seconds in the case of the starting reactor, for example, by lowering the inductance value, reducing the load on the starting current of the motor, Life can be extended.
- the present invention adjusts the inductance value according to the time in consideration that the starting time of the motor is within 60 seconds in the case of the starting reactor, for example, by lowering the inductance value, reducing the load on the starting current of the motor, Life can be extended.
- harmonic removal is limited, but by adjusting the inductance value, the area is widened and more effects can be obtained with the same structure.
- FIG. 1 shows the structure of a reactor according to an embodiment of the present invention.
- FIG. 4 shows another exemplary view of the Y-shaped yoke core shown in FIG. 1.
- FIG. 5 shows a structure of a reactor according to another embodiment of the present invention.
- FIG. 6 shows an exemplary view of the delta-type yoke core shown in FIG. 5.
- FIG. 9 is an exemplary view illustrating a process of manufacturing the delta-type yoke core shown in FIG. 8.
- FIG. 10 is a diagram illustrating another example of the delta-type yoke core shown in FIG. 5.
- FIG. 12 shows the structure of a reactor according to another embodiment of the present invention.
- FIG. 13 shows an exemplary view for explaining a triangular column structure after cutting into a parallelogram using a steel-shaped core.
- FIG. 14 shows an exemplary view for explaining a triangular pillar structure after cutting into a hexagonal shape using a steel-shaped core.
- FIG. 15 shows a configuration of a reactor in which an inductance value can be adjusted according to an embodiment of the present invention.
- 16 shows exemplary diagrams of a structure of a reactor for having the same three-phase inductance values in the present invention.
- 17 to 20 illustrate exemplary diagrams for explaining a method of adjusting an inductance value in each reactor shown in FIG. 16.
- Embodiments of the present invention provide the same or uniform inductance in each phase of a three-phase reactor by forming a yoke core shape into a Y-shaped or delta-shaped (or triangular) shape so that the magnetic flux length in each phase is the same.
- the yoke core of the present invention forms (or manufactures) partial cores for forming a yoke core by using at least one of a metal powder or a steel core, and the Y-type Or by providing a delta (or triangular) yoke core, it is possible to provide the same inductance in each phase of the reactor.
- the Y-shaped yoke core includes three pentagonal partial cores, one pentagonal partial core and two rectangular partial cores, or three rectangular partial cores and one equilateral triangle partial core, or three rectangular partial cores. It may include partial cores and one Y-shaped partial core.
- the delta-shaped yoke core includes three hexagonal partial cores, three parallelogram partial cores, three pentagonal partial cores and three square partial cores, or three equilateral triangle partial cores and It may include three trapezoidal partial cores, or may include three droplet-shaped partial cores and three trapezoidal partial cores.
- the inner angle of each of the partial cores may be determined, and the Y-type yoke core or delta using the partial cores having the determined inner angle Mold yoke core can be formed.
- the Y-type yoke core or the delta-type yoke core is a metal powder core (for example, sendust, Megaflux, CIP (iron powder), Ni-Fe, amorphous alloy, ferrite, etc.) or a steel core (for example, , Fe-si Core, Super Core, Amorphous Core, Nano Crystalline Core, etc.), and a thermosetting resin (epoxy), thermoplastic resin (acrylic, polyester) and a curing agent are mixed in a certain ratio. Partial cores can also be produced by applying heat at a temperature.
- a yoke core may be formed by combining a metal powder core and a steel core.
- the steel core may be stacked horizontally to form a partial core according to the characteristics of the steel core, or vertically stacked to form a partial core.
- the core size is different and vertically stacked to form a partial core. Can also form.
- FIG. 1 shows a structure of a reactor according to an embodiment of the present invention, and shows a structure of a reactor including a Y-type yoke core.
- the Y-type yoke core 100 is made of a Y-type, and a metal powder core, for example, sendust, Megaflux, CIP (iron powder), Ni-Fe, amorphous alloy, ferrite, etc., or a steel core, for example, It can be made of Fe-Si Core, Super Core, Amorphous Core, Nano Crystalline Core, etc.
- a metal powder core for example, sendust, Megaflux, CIP (iron powder), Ni-Fe, amorphous alloy, ferrite, etc.
- a steel core for example, It can be made of Fe-Si Core, Super Core, Amorphous Core, Nano Crystalline Core, etc.
- the Y-type yoke core 100 may be manufactured by manufacturing a single metal powder or by combining a plurality of powders at a predetermined ratio when manufacturing a Y-shaped yoke core using metal powder.
- the Y-type yoke core 100 may be formed using a metal powder core or a steel core, and a thermosetting resin (epoxy), a thermoplastic resin (acrylic, polyester) and a curing agent are mixed in a certain ratio. By applying heat at a temperature, each of the partial cores or a Y-shaped yoke core may be manufactured.
- each of the pentagonal partial cores 210 has the same shape, and the inner angles are maintained at 120° C., 120° C., 120° C., 90° C., and 90° C., so that the three pentagonal partial cores are combined to form a Y-shaped yoke core. Can be formed.
- Each of the pentagonal partial cores 210 may be formed by stacking horizontally or vertically depending on the characteristics of the steel core, but when formed by stacking vertically, the steel cores may be stacked with different sizes. have.
- the Y-shaped yoke core includes one pentagonal partial core 220 and two rectangular partial cores 240, and one pentagonal partial core 220 and two rectangular partial cores. It can be seen that 240 is combined to form a Y-shaped yoke core.
- each partial core may be formed by a steel core, and the Y-shaped yoke core may be formed using the partial cores thus formed.
- the pentagonal partial core 220 can be combined with the two rectangular partial cores 240 to form a Y-shaped yoke core by maintaining an inner angle of 150°C, 60°C, 150°C, 90°C, and 90°C. .
- Each of the pentagonal partial core 220 and the rectangular partial cores 240 may be formed by stacking horizontally or vertically depending on the characteristics of the steel core. When formed by stacking vertically, the steel core It can also be stacked with different sizes.
- the pentagonal partial core 220 and the rectangular partial cores 240 may be provided with a connection means for connecting the partial cores at a connection portion between the partial cores, and by combining the partial cores using these connection means , Y-type yoke core may be formed.
- FIG. 3 shows other exemplary views of the Y-shaped yoke core shown in FIG. 1.
- each of the rectangular partial cores 240 may be formed by stacking horizontally or vertically depending on the characteristics of the steel core. When formed by stacking vertically, the size of the steel core is different. It can also be laminated.
- the equilateral triangle partial core 310 may be formed by horizontally stacking, vertically stacked, or formed of a metal powder core using metal powder according to the characteristics of the steel core.
- the Y-shaped yoke core includes three rectangular partial cores 240 and one Y-shaped partial core 320, and three rectangular partial cores 240 and one Y-shaped It can be seen that the partial cores 320 are combined to form a Y-shaped yoke core.
- each partial core may be formed by a steel core or a metal powder core, and a Y-shaped yoke core may be formed by using the thus formed partial cores.
- each of the rectangular partial cores 240 may be formed by stacking horizontally or vertically depending on the characteristics of the steel core. When formed by stacking vertically, the size of the steel core is different. It can also be laminated.
- the Y-shaped partial core 320 may be formed by stacking horizontally according to the characteristics of the steel core, may be formed by stacking vertically, or may be formed of a metal powder core using metal powder.
- each of the rectangular partial cores 240 and the Y-shaped partial core 320 may be provided with a connection means for connecting the partial cores at a connection portion between the partial cores, and the partial cores are connected using such a connection means.
- a Y-type yoke core can also be formed.
- a method of manufacturing a Y-shaped yoke core by combining a metal powder and a steel core may be performed by first manufacturing a Y-shaped partial core using metal powder, and then combining a rectangular silicon.
- the shape of the steel core described in FIG. 3 has an angle inserted based on the horizontal shape
- the shape of the steel core may be implemented in a vertical shape based on this angle.
- FIG. 4 shows another exemplary view of the Y-type yoke core shown in FIG. 1, and as shown in FIG. 4, the Y-type yoke core processes one surface of the partial core 410 having the same shape, By combining the three partial cores 410 processed on one side, it can be seen that the shapes of the joined portions are naturally coupled or assembled without colliding with each other.
- the degree to which one surface is processed may be determined in consideration of the length and insertion depth of the other surface of the Y-type yoke core.
- FIG. 5 is a block diagram illustrating a reactor according to another embodiment of the present invention.
- FIG. 5 illustrates a reactor including a delta (or triangular) yoke core.
- the delta type reactor includes a delta type yoke core 500 and a leg core 600.
- the delta-type yoke core 500 may be manufactured by making a single metal powder or combining a plurality of powders at a predetermined ratio when manufacturing a delta-type yoke core using metal powder.
- the delta-type yoke core 500 may be formed using a metal powder core or a steel core, and a thermosetting resin (epoxy), a thermoplastic resin (acrylic, polyester) and a curing agent are mixed in a certain ratio. By applying heat to a temperature, it is also possible to manufacture each of the partial cores or a delta yoke core.
- the leg core 600 may be formed in a circular column shape or a polygonal column shape, and may be made of steel cores, for example, Fe-Si Core, Super Core, Amorphous Core, Nano Crystalline Core, or metal powder cores. I can.
- the leg core 600 may use a powder core or a ferrite core using a metal powder core, or may be manufactured by laminating rectangular cores having different sizes in all directions when manufactured as a steel core.
- FIG. 6 shows an exemplary view of the delta-type yoke core shown in FIG. 5.
- the delta-shaped yoke core includes three hexagonal partial cores 610, and the three hexagonal partial cores 610 are combined to form a delta-shaped yoke core.
- each partial core may be formed by a steel core, and a delta-type yoke core may be formed using the partial cores thus formed.
- each of the hexagonal partial cores 610 has the same shape, and the inner angles are maintained at 120°C, 90°C, 150°C, 150°C, 90°C, and 120°C, so that the three hexagonal partial cores 610 are Can be combined to form a delta-shaped yoke core.
- the inner angle of the hexagonal partial core 610 is an inner angle of the partial core formed to form the delta-shaped yoke core, and the corresponding inner angle may vary depending on the shape of the partial core.
- Each of the hexagonal partial cores 610 may be formed by horizontally stacking 611 as shown in FIG. 6B depending on the characteristics of the steel core, or vertically stacking 612 to be formed as shown in FIG. 6C. However, in the case of vertical stacking, the steel cores may be stacked with different sizes.
- each of the hexagonal partial cores 610 may be provided with a connection means for connecting the partial cores at a connection portion between the partial cores, and by combining the partial cores using these connection means, a delta-shaped yoke core is formed. It can also be formed.
- three hexagonal partial cores 611 in which a steel core is horizontally stacked, for example, are coupled through a connection means 710 at a connection portion of silicon cores, thereby having a hexagonal structure.
- the shape of a triangular pillar of a delta-shaped core made of can be made.
- the leg core may be formed in contact with the two hexagonal partial cores.
- FIG. 8 is a diagram illustrating another example of the delta-type yoke core shown in FIG. 5.
- each of the parallelogram partial cores 810 has the same shape, and the inner angles are maintained at 120°C, 60°C, 120°C, and 60°C, so that the three parallelogram partial cores 810 are combined to form a delta type.
- a yoke core can be formed.
- the inner angle of the parallelogram partial core 810 is an inner angle of the partial core formed to form the delta-type yoke core, and the corresponding inner angle may vary depending on the shape of the partial core.
- Each of the parallelogram partial cores 810 may be formed by stacking horizontally as shown in FIG. 8B according to the characteristics of the steel core, or may be formed by stacking vertically 811 as shown in FIG. 8C. , When formed by vertically stacking 812, the steel cores may be stacked with different sizes.
- each of the parallelogram partial cores 810 may be provided with a connection means for connecting the partial cores at a connection portion between the partial cores, and by combining the partial cores using such connection means, a delta-type yoke core Can also form.
- FIG. 10 is a diagram illustrating another example of the delta-type yoke core shown in FIG. 5.
- each of the pentagonal partial cores 1020 has the same shape, and the inner angles are maintained at 120°C, 90°C, 120°C, 90°C, and 120°C, and are disposed between two adjacent rectangular partial cores 1010 As a result, the three pentagonal partial cores 1020 and the three rectangular partial cores 1010 may be combined to form a delta-type yoke core.
- the interior angle of the pentagonal partial core 1020 is an interior angle of the partial core formed to form a delta-type yoke core, and the corresponding interior angle may vary depending on the shape of the partial core.
- a connection means for connecting the partial cores may be provided at a connection portion between the partial cores, and a delta-type yoke core may be formed by joining the partial cores using such connection means.
- the leg core 1030 may be formed in contact with the pentagonal partial core 1020.
- each of the trapezoidal partial cores 1050 has the same shape, and is disposed between two adjacent equilateral triangle partial cores 1040, so that the three equilateral triangle partial cores 1040 and the three trapezoidal partial cores ( 1050) can be combined to form a delta yoke core.
- the interior angle of the trapezoidal partial core 1050 is an interior angle of the partial core formed to form a delta-type yoke core, and the corresponding interior angle may vary depending on the shape of the partial core, and such an interior angle provides the technology of the present invention. It can be decided by a business operator or an individual.
- Each of the trapezoidal partial cores 1050 may be formed by stacking horizontally or vertically according to the characteristics of the steel core, but when formed by stacking vertically, the steel cores may be stacked with different sizes. have.
- a connection means for connecting the partial cores may be provided at a connection portion between the partial cores, and a delta-type yoke core may be formed by joining the partial cores using such connection means.
- the leg core 1030 may be formed in contact with the equilateral triangular partial core 1040 and the trapezoidal partial core 1050.
- FIG. 11 is a diagram illustrating another example of the delta-type yoke core shown in FIG. 5.
- each of the trapezoidal cores 1120 has the same shape, and is disposed between the two adjacent water droplets cores 1110, so that the three droplet cores 1110 and the three trapezoidal cores ( 1120) can be combined to form a delta yoke core.
- the interior angle of the trapezoidal partial core 1120 is an interior angle of the partial core formed to form a delta-type yoke core, and the corresponding interior angle may vary depending on the shape of the partial core, and such an interior angle provides the technology of the present invention. It can be decided by a business operator or an individual.
- Each of the trapezoidal partial cores 1120 may be formed by stacking horizontally or vertically according to the characteristics of the steel core, but when formed by stacking vertically, the steel cores may be stacked with different sizes. have.
- a connection means for connecting the partial cores may be provided at a connection portion between the partial cores, and a delta-type yoke core may be formed by joining the partial cores using such connection means.
- the leg core 1130 may be formed in contact with the water droplet portion core 1110 and the trapezoid portion core 1120.
- FIG. 12 shows the structure of a reactor according to another embodiment of the present invention.
- the three-phase reactor has a rectangular shape of the yoke core, and when a three-phase reactor is manufactured with this shape, the inductance value of each phase (a, b, c) is 5% or more. Can have. This is related to the magnetic path length (MPL) 1200 of the reactor, and the magnetic path length (MPL) 1200 of phase a and c phase is the same, but the magnetic path length 1201 of phase b is relatively small, and the inductance of phase b Values can theoretically differ in size.
- the following ⁇ Equation 2> shows the equation for calculating the inductance value of each phase.
- the value of k on b may have a value of 0.93 to 0.97.
- Equation 3 a method of maintaining the same L value of each of the three phases may be as shown in Equation 3 below.
- ⁇ 1 and ⁇ 2 denote the magnetic permeability of each leg core 600
- MPL' and MPL may denote a variable of the length of a ruler for equalizing the inductance value of each phase.
- the inductance value of each phase can be made the same through the change of the magnetic permeability and the magnetic path length of each of the leg cores.
- the MPL is not the same through the middle portions 1250 and 1251, but because the MPL is different, the molecular permeability can be changed to have the same inductance value.
- FIG. 13 shows an exemplary diagram for explaining a triangular column structure after cutting into a parallelogram using a steel-shaped core.
- a silicon core 1320 is a picture having a triangular structure 1310.
- a parallelogram 60°C, 120°C, 60°C, 120°C
- additional processing (1320) and assembled state.
- FIG. (1340) a drawing for assembling each core is shown.
- embodiments of the present invention can provide the same or uniform inductance in each phase of the three-phase reactor by forming the yoke core shape in a Y-shaped or delta-shaped (or triangular) shape so that the magnetic flux of each phase is the same. have.
- the reactor to which the Y-type (or Y-shape) and the delta-type (or triangular) yoke core is applied provides the same or uniform inductance in each phase, the modular inverter to which the reactor of the present invention is applied The distribution is made evenly, so the safety of the system is improved and excellent power quality can be realized.
- the heating temperature generated in the coils of each phase is uniformly generated, the current density can be improved compared to the conventional rectangular reactor.
- the reactor of the present invention forms a partial core in a trapezoidal shape when manufacturing a delta-type yoke core, and then cuts both ends twice in a trapezoidal shape to form a hexagonal shape, thereby forming a delta-type yoke core by configuring three sides. Also, the angle at this time can be changed by the cross-sectional area of the leg core.
- the inner angle of each partial core may be varied in consideration of the leg core structure, cross-sectional area, and shape, and according to the shape of the leg core, at least one of a steel core or a metal powder core may be combined to produce a different shape of each partial core. I can.
- thermosetting resins epoxys
- thermoplastic resins acrylics, polyesters
- a combination of a curing agent is required, and the temperature and time to apply heat to the product in the state of mixing the resin with the metal powder are also important.
- the strength of the core and the permeability of the product ( ⁇ ) can be determined.
- the connecting means may be used to maintain a constant gap or prevent vibration.
- the angle at which the partial core is cut to fit the size is important, and this angle can be determined in consideration of the cross-sectional area of the leg core and the shape and size of the leg core.
- a yoke core may be formed by punching and laminating the yoke core in a Y-type or a delta shape at a time. This method simplifies the assembly structure between the cores, minimizing noise and vibration and simplifying the manufacturing process.
- FIG. 15 shows a configuration of a reactor in which an inductance value can be adjusted according to an embodiment of the present invention.
- the sensor unit 1510 includes at least one sensing means for measuring a current or voltage flowing through the reactor, and in the case of a three-phase reactor, the current or voltage flowing through each phase may be measured.
- the sensor unit 1510 may measure the current or voltage applied to each phase according to the load, and measure the current flowing through each phase by using a current sensor, and measure the voltage (shunt)
- the voltage applied to each phase can be measured using the method.
- the method of measuring the current or voltage is not limited to the above-described method, and any method capable of measuring the voltage or current of each phase can be applied.
- the controller 1520 calculates an inductance value of the reactor based on a measurement signal for a current or voltage flowing in the reactor or each phase measured by the sensor unit 1510, and the gap size of the core corresponding to the calculated inductance value ( Or air gap size).
- control unit 1520 may calculate an inductance value according to the load and calculate the core gap or air gap size to have the calculated inductance value.
- the controller 1520 may calculate the inductance value of the reactor according to the load in consideration of the type of the three-phase reactor and the shape of the yoke core, and a method of calculating the gap size according to the calculated inductance value may also be determined in advance. .
- the control unit 1520 generates a control signal for adjusting the gap size of the core and provides it to the operation unit.
- the operation unit 1530 adjusts the inductance value of the reactor according to the load of the reactor by adjusting the gap size of the core based on the control signal received from the control unit 1520.
- the operation unit 1530 may include a means for moving the gap of the core, and may move the current core gap of the reactor as much as the gap size calculated by the control unit 1520, which moves the core up and down.
- the gap size of the core can be adjusted by turning it, moving it left or right, or rotating it.
- the transmission/reception unit 1540 may be a configuration means corresponding to the remote transmission/reception device.
- the transmission/reception unit 1540 may not be provided when the sensor unit 1510 is provided, but may be provided even when the sensor unit 1510 is provided, and the signal measured by the sensor unit 100
- the inductance value of the reactor may be automatically adjusted, or when an inductance value to be adjusted is received through the transceiver, the inductance value of the reactor may be adjusted based on the received inductance value.
- 16 shows exemplary diagrams of the structure of a reactor for having the same three-phase inductance value in the present invention, and is shown in Y-shape, delta-shape, circle and rectangle according to the shape of the yoke core.
- the reactor according to the embodiment of the present invention has a Y type 1610, a delta type 1620, a circle 1630 and a rectangle 1640 according to the shape of the yoke core. It can be classified, and depending on the situation, the shape of the upper yoke core and the shape of the lower yoke core may be configured differently. For example, as shown in FIG. 16D, the upper yoke core may have a delta shape 1620 and the lower yoke core may have a circular shape 1630. In addition, even if the Y-type yoke core is used as an upper yoke core or a lower yoke core in a reactor having different yoke core shapes, there may be no error in the inductance value.
- the inductance values of each phase may be the same, which can be known through Equation 1 above.
- the length of the ruler of each phase should be the same.
- a shape of a leg core on which a coil is wound may have a shape of a square or a circle in the shape of a yoke core.
- 17 to 20 illustrate exemplary diagrams for explaining a method of adjusting an inductance value in each reactor shown in FIG. 16.
- FIG. 17 is an exemplary diagram for explaining a method of adjusting an inductance value in the reactor of FIG. 16A.
- a reactor in a three-phase reactor having a Y-shaped or Y-shaped (1610) yoke core shape
- the triangular region 1611 formed at the center of the yoke core or a portion of the Y-shaped region 1612 including the center of the Y-shaped yoke core upward or downward.
- the size that is moved upward or downward may be calculated by the control unit of FIG. 1.
- the triangular region 1611 or some of the Y-shaped regions 1612 may be formed in a bobbin structure, and may be formed in a structure in which a single core or a plurality of cores are stacked.
- the triangular region or a portion of the Y-type region may have a structure in which powder, ferrite, and silicon are laminated.
- FIG. 18 is an exemplary diagram for explaining a method of adjusting an inductance value in the reactor of FIG. 16B.
- a three-phase reactor having a delta or triangular shape 1620
- the gap size may be changed, and thus the reactor or the inductance value of each phase may be adjusted.
- the size that is moved upward or downward or the size that is rotated left and right may be calculated by the control unit of FIG. 15.
- FIG. 19 shows an exemplary diagram for explaining a method of adjusting the inductance value in the reactor of FIG. 16C.
- the gap size may be changed, and thus the reactor or the inductance value of each phase may be adjusted.
- the size moved upward or downward may be calculated by the controller of FIG. 15.
- FIG. 20 shows an exemplary diagram for explaining a method of adjusting the inductance value in a rectangular reactor, and as shown in FIG. 20, the inductance value of the reactor in a three-phase reactor having a rectangular shape 1640 or
- the gap size may be changed, and thus the reactor or the inductance value of each phase may be adjusted.
- the size moved upward or downward may be calculated by the controller of FIG. 15.
- the permeability can be supplemented by mixing the material of the yoke core into a single material or a plurality of materials.
- the reactor according to the embodiments of the present invention prevents current imbalance caused by different inductance values of each phase of the three-phase reactor, and changes the inductance value by automatically adjusting the air gap of the reactor according to the customer's purpose of use. By doing so, it is possible to maintain power quality and optimized shape.
- the reactor according to the embodiments of the present invention can improve the efficiency of the solar power generation system under low load by adjusting the inductance value according to the energy of the solar power generation amount when applied to the solar power generation system, and the wind power generation system When applied to, the amount of electricity generated can be improved by adjusting the inductance value according to the air volume speed.
- the reactor according to the embodiments of the present invention reduces the load on the starting current of the motor by adjusting the inductance value according to the time in consideration that the starting time of the motor is within 60 seconds in the case of the starting reactor, and Can increase.
- the reactor according to the embodiments of the present invention can remove each harmonic with one reactor, cost can be reduced.
- the reactor according to the embodiments of the present invention maintains a constant temperature even during repeated operation for a long time without saturating the core due to the magnitude of the current when manipulating the driving conditions and the driver's inductance value. You can drive.
- the reactor according to the embodiments of the present invention may include a hybrid reactor in which an inductance value is automatically changed according to the magnitude of a current as a characteristic of a powder core constituting the reactor even without a sensor unit.
- the reactor according to the embodiment of the present invention automatically adjusts the inductance value according to the load of the reactor, and the method of adjusting the inductance value is not limited to the above description, and the inductance value of the reactor can be automatically adjusted. Various methods can be applied. Of course, the method of automatically adjusting the inductance value is not limited to changes in the physical structure.
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Abstract
Description
Claims (17)
- 각 상의 인덕턴스가 동일한 3상 리액터에 있어서,상기 3상 리액터는요크 코어(Yoke Core)를 포함하고,상기 요크 코어는상기 각 상에서 자속의 자로 길이(Magnetic Path length)가 같아지도록 Y형 또는 델타형으로 형성되는 리액터.
- 제1항에 있어서,상기 요크 코어는상기 Y형인 경우 세 개의 오각형 부분 코어들을 포함하고,상기 오각형 부분 코어들 각각은내각이 120℃, 120℃, 120℃, 90℃, 90℃를 유지하는 것을 특징으로 하는 리액터.
- 제1항에 있어서,상기 요크 코어는상기 Y형인 경우 한 개의 오각형 부분 코어와 두 개의 직사각형 부분 코어들을 포함하고,상기 오각형 부분 코어는내각이 150℃, 60℃, 150℃, 90℃, 90℃를 유지하는 것을 특징으로 하는 리액터.
- 제1항에 있어서,상기 요크 코어는상기 Y형인 경우 세 개의 직사각형 부분 코어들과 한 개의 정삼각형 부분 코어를 포함하거나 세 개의 직사각형 부분 코어들과 한 개의 Y형 부분 코어를 포함하는 것을 특징으로 하는 리액터.
- 제1항에 있어서,상기 요크 코어는상기 델타형인 경우 세 개의 육각형 부분 코어들을 포함하거나 세 개의 평행사변형 부분 코어들을 포함하고,상기 육각형 부분 코어들 각각은내각이 120℃, 90℃, 150℃, 150℃, 90℃, 120℃를 유지하며,상기 평행사변형 부분 코어들 각각은내각이 120℃, 60℃, 120℃, 60℃를 유지하는 것을 특징으로 하는 리액터.
- 제5항에 있어서,상기 요크 코어는상기 세 개의 육각형 부분 코어들 간의 연결 부위 또는 상기 세 개의 평행사변형 부분 코어들 간의 연결 부위에 부분 코어들을 연결하는 연결 수단을 더 포함하는 것을 특징으로 하는 리액터.
- 제1항에 있어서,상기 요크 코어는상기 델타형인 경우 세 개의 오각형 부분 코어들과 세 개의 사각형 부분 코어들을 포함하거나 세 개의 정삼각형 부분 코어들과 세 개의 사다리꼴 부분 코어들을 포함하며,상기 오각형 부분 코어들 각각은내각이 120℃, 90℃, 120℃, 90℃, 120℃를 유지하고 두 개의 사각형 부분 코어들 사이에 배치되며,상기 사다리꼴 부분 코어들 각각은두 개의 정삼각형 부분 코어들 사이에 배치되는 것을 특징으로 하는 리액터.
- 각 상의 인덕턴스가 동일한 3상 리액터 제조 방법에 있어서,요크 코어를 형성하기 위하여, 복수의 부분 코어들을 형성하는 단계; 및상기 형성된 부분 코어들을 이용하여 상기 각 상에서 자속의 자로 길이(Magnetic Path length)가 같아지도록 Y형 또는 델타형의 요크 코어를 형성하는 단계를 포함하는 리액터 제조 방법.
- 제8항에 있어서,상기 부분 코어들을 형성하는 단계는금속 분말 또는 스틸 코어 중 적어도 하나를 이용하여 상기 부분 코어들을 형성하는 것을 특징으로 하는 리액터 제조 방법.
- 각 상의 인덕턴스가 동일한 3상 리액터 제조 방법에 있어서,직사각형 형상의 요크 코어를 형성하는 단계; 및코일이 감겨지는 레그 코어(Leg Core)를 형성하는 단계를 포함하고,상기 레그 코어를 형성하는 단계는투자율(permeability)이 다른 복수 개의 코어를 이용하여 형성하는 리액터 제조 방법.
- 리액터에 흐르는 전류 또는 전압을 측정하는 센서부;상기 센서부에서 측정된 신호에 기초하여 상기 리액터의 인덕턴스 값을 조절하기 위한 코어의 갭 크기를 계산하는 제어부; 및상기 계산된 갭 크기에 대응하는 제어 신호에 의하여 상기 코어의 갭 크기를 조절함으로써, 상기 측정된 신호에 대응하여 상기 리액터의 인덕턴스 값을 조절하는 동작부를 포함하는 리액터.
- 제11항에 있어서,상기 동작부는상기 리액터의 요크 코어(Yoke Core)를 상하로 이동시키거나 좌우로 이동시키거나 회전시킴으로써, 상기 코어의 갭을 조절하는 것을 특징으로 하는 리액터.
- 제12항에 있어서,상기 리액터의 요크 코어 형상은3상 리액터인 경우 Y형, 델타형, 원형과 직사각형 중 적어도 하나를 포함하는 것을 특징으로 하는 리액터.
- 제13항에 있어서,상기 요크 코어는상부의 요크 코어와 하부의 요크 코어가 동일한 형상을 가지거나 상이한 형상을 가지는 것을 특징으로 하는 리액터.
- 제11항에 있어서,상기 리액터는태양광 발전 시스템에 적용되는 인버터용 리액터, 모터 기동 시 전류의 량이 변하는 기동 리액터와 고조파의 차수에 의해 인덕턴스 값이 변하는 직렬 리액터 중 어느 하나인 것을 특징으로 하는 리액터.
- 제11항에 있어서,상기 동작부는상기 리액터의 요크 코어 형상이 Y형인 경우 상기 Y형의 중심에 해당하는 삼각형 또는 상기 Y형의 중심을 포함하는 일부의 Y형을 상하로 이동시킴으로써, 상기 리액터의 인덕턴스 값을 조절하는 것을 특징으로 하는 리액터
- 제16항에 있어서,상기 Y형의 중심에 해당하는 삼각형 또는 상기 Y형의 중심을 포함하는 일부의 Y형은보빈의 구조로 형성되며, 단일 코어 또는 복수의 코어가 적층되는 구조로 형성되는 것을 특징으로 하는 리액터.
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KR10-2019-0040801 | 2019-04-08 | ||
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KR10-2019-0049421 | 2019-04-26 | ||
KR1020190049421A KR20190051917A (ko) | 2019-04-26 | 2019-04-26 | 삼각형 구조를 갖는 리액터 제작 방법 |
KR20-2019-0001874 | 2019-05-08 | ||
KR20190001874 | 2019-05-08 | ||
KR2020190002047U KR20190001374U (ko) | 2019-05-20 | 2019-05-20 | 스틸코아의 삼각형 구조 제작 방법법 |
KR20-2019-0002047 | 2019-05-20 | ||
KR20-2019-0002800 | 2019-07-05 | ||
KR20190002800 | 2019-07-05 | ||
KR10-2019-0148382 | 2019-11-19 | ||
KR10-2019-0148383 | 2019-11-19 | ||
KR1020190148383A KR102248341B1 (ko) | 2019-04-26 | 2019-11-19 | 동일한 인덕턴스 값을 가지는 리액터 제조 방법 |
KR1020190148382A KR102288616B1 (ko) | 2019-04-08 | 2019-11-19 | 인덕턴스 값이 조절 가능한 리액터 |
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