WO2015115726A1 - Transformer for resonant power converter using winding method for reducing leakage flux - Google Patents

Transformer for resonant power converter using winding method for reducing leakage flux Download PDF

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Publication number
WO2015115726A1
WO2015115726A1 PCT/KR2014/011400 KR2014011400W WO2015115726A1 WO 2015115726 A1 WO2015115726 A1 WO 2015115726A1 KR 2014011400 W KR2014011400 W KR 2014011400W WO 2015115726 A1 WO2015115726 A1 WO 2015115726A1
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transformer
resonant
power converter
winding
capacitor
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PCT/KR2014/011400
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French (fr)
Korean (ko)
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조정민
한영재
정현승
이창영
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한국철도기술연구원
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Priority to CN201480074844.9A priority Critical patent/CN105960689B/en
Publication of WO2015115726A1 publication Critical patent/WO2015115726A1/en

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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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/346—Preventing or reducing leakage fields
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output

Definitions

  • the present invention relates to a method of reducing leakage flux of a transformer for a resonant power converter, and more particularly, to minimize leakage flux of a transformer used in a resonant circuit to increase a resonant frequency in a resonant power converter.
  • the present invention relates to a leakage flux reducing winding method of a transformer for a power converter.
  • the converter is driven at a resonance frequency determined by a parameter value between the leakage inductance (L) of the transformer and the capacitor (C) for resonance.
  • the resonant frequency is decreased by the resonant frequency, or the leakage magnetic flux of the transformer causes a large amount of current to be supplied to the capacitor to raise the voltage level of the element.
  • the conventional high voltage large-capacity resonant converter requires a large number of turns to reduce the reactive power of the transformer, which increases the leakage flux, and the resonance frequency of the system is inevitably lowered, thereby requiring a new technology to solve the problem. It became.
  • the present invention is manufactured so that the primary winding and the secondary winding are laminated alternately with each other, and the leakage magnetic flux is canceled with each other, so that the resonance using the leakage flux reducing winding method can significantly reduce the leakage magnetic flux of the transformer.
  • a transformer for a type power converter can be provided.
  • the present invention is a structure in which the first and second side windings of the same shape are insulated from each other and laminated so as to face each other after the resonant power converter resonates, and then the roll is wound in a shape.
  • the winding is a flat winding.
  • the transformer is a resonant type half bridge DC to DC converter consisting of an IGBT, a diode and a split capacitor, in order to generate a leakage inductance and resonance to generate an alternating magnetic field, the leakage of the transformer Reducing the inductance above the reference value reduces the voltage variation across the split capacitor.
  • the transformer in a resonant full bridge DC to DC converter consisting of an IGBT, a diode and a resonant capacitor, can increase the switching frequency or charge the resonant capacitor when the leakage inductance of the transformer is lower than the reference value.
  • the capacitor voltage level can be lowered by reducing the amount of current being applied.
  • the primary winding and the secondary winding are manufactured to be stacked alternately with each other, and the leakage magnetic flux (arrows) generated in the primary and secondary windings cancel each other, which significantly reduces the leakage magnetic flux of the transformer. have.
  • the resonant converter can reduce the size of the system by increasing the resonance frequency when the parameter of the capacitor or inductor related to the resonance phenomenon is small.
  • a transformer of a large capacity system also has an advantage of increasing resonance frequency by minimizing leakage inductance.
  • 1 is a view for explaining the resonant frequency and the like according to the prior invention.
  • FIG. 2 is a view showing the winding of the primary and secondary windings several times in accordance with the conventional invention.
  • FIG. 3 is a conceptual diagram illustrating alternately stacking primary and secondary windings according to the present invention.
  • FIG. 4 is a view showing a winding method of a transformer for a resonance type power converter using a leakage flux reducing winding method according to an embodiment of the present invention.
  • FIG. 5 is a view showing a resonance type half bridge DC to DC converter according to an embodiment of the present invention.
  • FIG. 6 is a view illustrating a resonance full bridge DC to DC converter according to an embodiment of the present invention.
  • the present invention provides the primary and secondary windings 12 such that the primary winding 12 and the secondary winding 14 of the transformer 10 are alternately stacked with each other for resonance of the resonance type power converter. , 14) to be opposed to each other, and then wound in a roll shape to the iron core core (19).
  • the primary and secondary windings (12, 14) of the same shape are stacked or stacked to face each other and then rolled into a roll shape. Rewind
  • the primary and secondary windings 12, 14, which are made entirely of copper, are insulated, respectively.
  • the windings 12 and 14 are flat windings, for example two overlapping copper sheets of A4 paper size.
  • the primary winding 12 and the secondary winding 14 are manufactured to be alternately stacked with each other, so that the leakage flux (arrow mark) generated in the primary and secondary windings cancel each other to significantly reduce the leakage flux of the transformer. Can be.
  • the resonant half-bridge DC to DC converter according to an embodiment of the present invention of Figure 5, IGBT (22; insulated gate bipolar mode transistor) and the diode 26, etc., the split capacitor 24 and
  • IGBT 22; insulated gate bipolar mode transistor
  • the split capacitor 24 As a device for generating an alternating magnetic field by generating resonance and leakage inductance of the transformer 10, according to the present invention, when the leakage inductance of the transformer 10 is reduced, voltage fluctuations at both ends of the split capacitor 24 may be minimized.
  • the switching frequency may be increased or the amount of current charged in the resonant capacitor may be reduced to lower the capacitor voltage level.
  • the leakage inductance of the transformer when the leakage inductance of the transformer is reduced to a reference value (constant), the voltage across the split capacitor In the resonant type full bridge DC to DC converter, when the fluctuation is reduced compared to the conventional method, when the leakage inductance of the transformer is lowered than the reference value, the switching frequency can be increased than before, or the amount of current charged in the resonant capacitor can be reduced so that the capacitor voltage level Can be lowered.
  • the reference value is a numerical value based on the conventional invention.
  • the present invention can reduce the size of the system by increasing the resonance frequency when the parameter of the capacitor or inductor related to the resonance phenomenon is small.
  • transformer 12 primary winding
  • IGBT 24 Split Capacitor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The present invention relates to a winding method for reducing a leakage flux of a transformer for a resonant power converter and, more specifically, to a winding method for reducing a leakage flux of a transformer for a resonant power converter, which minimizes the leakage flux of the transformer used for a resonant circuit in order to increase a resonant frequency in the resonant power converter. The present invention allows primary and secondary windings having the same shape for resonance of the resonant power converter to be respectively insulated, to be stacked to face each other, and then to be wound into a roll shape such that the leakage flux generated from the primary and secondary windings cancel each other out, thereby remarkably reducing the leakage flux of the transformer.

Description

누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기Transformer for Resonant Power Converter Using Leakage Reduction Flux Winding Method
본 발명은 공진형 전력변환기용 변압기의 누설자속저감 권선법에 관한 것으로서, 보다 상세하게는 공진형 전력변환기에 있어 공진주파수를 상승시키기 위해 공진회로에 이용되는 변압기의 누설자속을 최소화하고자 한 공진형 전력변환기용 변압기의 누설자속저감 권선법에 관한 것이다.The present invention relates to a method of reducing leakage flux of a transformer for a resonant power converter, and more particularly, to minimize leakage flux of a transformer used in a resonant circuit to increase a resonant frequency in a resonant power converter. The present invention relates to a leakage flux reducing winding method of a transformer for a power converter.
일반적으로 공진형 Full-bridge DC to DC 컨버터나 Half Bridge DC to DC 컨버터의 경우 변압기의 누설인덕턴스(L)와 공진을 위한 커패시터(C)간의 파라미터 값에 의해 결정된 공진주파수로 컨버터를 구동한다.In general, in the case of a resonant full-bridge DC to DC converter or a half bridge DC to DC converter, the converter is driven at a resonance frequency determined by a parameter value between the leakage inductance (L) of the transformer and the capacitor (C) for resonance.
그러나, 공진 소자의 파라미터값이 큰 경우 공진주파수 에 의해 공진주파수가 낮아지거나, 변압기의 누설자속이 커패시터에 대량의 전류를 공급하여 소자의 전압레벨을 상승시켜야 하는 문제점이 발생되었다.However, when the parameter value of the resonant element is large, the resonant frequency is decreased by the resonant frequency, or the leakage magnetic flux of the transformer causes a large amount of current to be supplied to the capacitor to raise the voltage level of the element.
도 2에서 보는 바와 같이, 기존 고주파용 변압기의 경우 1,2차측 권선을 여러 차례 적층하여 감는 경우 자속이 코어와 쇄교하지 않고 코일간에 자속루프를 형성하여 누설자속에 의한 누설인덕턴스(Leakage Inductance)가 증가하였다.As shown in FIG. 2, in the case of the conventional high-frequency transformer, when the primary and secondary windings are stacked and wound several times, the magnetic flux does not bridge with the core, but a magnetic flux loop is formed between the coils, so that leakage inductance due to leakage magnetic flux is obtained. Increased.
따라서 종래의 고전압 대용량 공진형 컨버터는 변압기의 무효전력을 감소시키기 위해 많은 권선수가 필요하여 누설자속이 증가되는 문제점이 있었고, 시스템의 공진주파수가 낮아질 수 밖에 없어서, 이를 해결할 수 있는 새로운 기술이 필요하게 되었다.Therefore, the conventional high voltage large-capacity resonant converter requires a large number of turns to reduce the reactive power of the transformer, which increases the leakage flux, and the resonance frequency of the system is inevitably lowered, thereby requiring a new technology to solve the problem. It became.
상술한 문제점을 해결하기 위하여 본 발명은 1차측 권선과 2차측 권선이 서로 교번하여 적층되도록 제작하여, 누설자속이 서로 상쇄되어 변압기의 누설자속을 현저하게 줄일 수 있는 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기를 제공할 수 있다.In order to solve the above problems, the present invention is manufactured so that the primary winding and the secondary winding are laminated alternately with each other, and the leakage magnetic flux is canceled with each other, so that the resonance using the leakage flux reducing winding method can significantly reduce the leakage magnetic flux of the transformer. A transformer for a type power converter can be provided.
본 발명은 공진형 전력변환기의 공진을 위해 동일한 형상의 1차측과 2차측 권선을 각각 절연시킨 후 상호 대향하도록 적층시킨 후 두루말이 형상으로 돌려 감은 구조이다.The present invention is a structure in which the first and second side windings of the same shape are insulated from each other and laminated so as to face each other after the resonant power converter resonates, and then the roll is wound in a shape.
일실시예에 있어서, 상기 권선은 평판 권선이다.In one embodiment, the winding is a flat winding.
일실시예에 있어서, 상기 변압기는, IGBT와 다이오드 및 스플릿 캐패시터(Split Capacitor)로 이루어진 공진형 Half Bridge DC to DC 컨버터에서, 누설 인덕턴스와 공진을 발생시켜 교번자계를 생성시키기 위하여, 상기 변압기의 누설인덕턴스를 기준치 보다 감소시키는 경우 상기 스플릿 캐패시터의 양단 전압 변동을 감소시킨다.In one embodiment, the transformer is a resonant type half bridge DC to DC converter consisting of an IGBT, a diode and a split capacitor, in order to generate a leakage inductance and resonance to generate an alternating magnetic field, the leakage of the transformer Reducing the inductance above the reference value reduces the voltage variation across the split capacitor.
일실시예에 있어서, 상기 변압기는, IGBT와 다이오드 및 공진 캐패시터로 이루어진 공진형 Full Bridge DC to DC 컨버터에서, 상기 변압기의 누설인덕턴스를 기준치 보다 감소시키는 경우 스위칭 주파수를 높일 수 있거나 또는 공진 커패시터에 충전되는 전류량을 감소시켜 커패시터 전압레벨을 낮출 수 있다.In one embodiment, the transformer, in a resonant full bridge DC to DC converter consisting of an IGBT, a diode and a resonant capacitor, can increase the switching frequency or charge the resonant capacitor when the leakage inductance of the transformer is lower than the reference value. The capacitor voltage level can be lowered by reducing the amount of current being applied.
본 발명에 따르면 1차측 권선과 2차측 권선이 서로 교번하여 적층되도록 제작하여, 1차측과 2차측 권선에서 발생되는 누설자속(화살표)이 서로 상쇄되어 변압기의 누설자속을 현저하게 줄일 수 있는 장점이 있다.According to the present invention, the primary winding and the secondary winding are manufactured to be stacked alternately with each other, and the leakage magnetic flux (arrows) generated in the primary and secondary windings cancel each other, which significantly reduces the leakage magnetic flux of the transformer. have.
본 발명에 따르면 공진형 컨버터는 공진현상과 관련된 커패시터나 인덕터의 파라미터가 작을 경우 공진주파수를 상승시켜 시스템을 소형화할 수 있다.According to the present invention, the resonant converter can reduce the size of the system by increasing the resonance frequency when the parameter of the capacitor or inductor related to the resonance phenomenon is small.
본 발명에 따르면 대용량 시스템의 변압기도 누설인덕턴스를 최소화하여 공진주파수를 증가시킬 수 있는 장점이 있다.According to the present invention, a transformer of a large capacity system also has an advantage of increasing resonance frequency by minimizing leakage inductance.
도 1은 종래 발명에 따른 공진주파수 등을 설명하기 위한 도면이다.1 is a view for explaining the resonant frequency and the like according to the prior invention.
도 2는 종래 발명에 따라 1,2차측 권선을 여러 차례 적층하여 감는 것을 보여주는 도면이다.2 is a view showing the winding of the primary and secondary windings several times in accordance with the conventional invention.
도 3은 본 발명에 따른 1,2차측 권선을 교번하여 적층하는 것을 보여주는 개념도이다.3 is a conceptual diagram illustrating alternately stacking primary and secondary windings according to the present invention.
도 4는 본 발명의 일실시예에 따른 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기의 권선법을 보여주는 도면이다.4 is a view showing a winding method of a transformer for a resonance type power converter using a leakage flux reducing winding method according to an embodiment of the present invention.
도 5는 본 발명의 일실시예에 따른 공진형 Half Bridge DC to DC 컨버터를 보여주는 도면이다.5 is a view showing a resonance type half bridge DC to DC converter according to an embodiment of the present invention.
도 6은 본 발명의 일실시예에 따른 공진형 Full Bridge DC to DC 컨버터를 보여주는 도면이다.6 is a view illustrating a resonance full bridge DC to DC converter according to an embodiment of the present invention.
본 발명을 충분히 이해하기 위해서 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 설명한다. 본 발명의 실시예는 여러 가지 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상세히 설명하는 실시예로 한정되는 것으로 해석되어서는 안 된다. 본 실시예는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위하여 제공되는 것이다. 따라서 도면에서의 요소의 형상 등은 보다 명확한 설명을 강조하기 위해서 과장되어 표현될 수 있다. 각 도면에서 동일한 부재는 동일한 참조부호로 도시한 경우가 있음을 유의하여야 한다. 또한, 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략된다.In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.
도 3에서 보는 바와 같이, 본 발명은 공진형 전력변환기의 공진을 위해 변압기(10)의 1차측 권선(12)과 2차측 권선(14)이 서로 교번하여 적층되도록 1차측과 2차측 권선(12, 14)을 대향시켜 접착한 후 철심 코어(19)에 두루마리 형상으로 돌려 감는다.As shown in FIG. 3, the present invention provides the primary and secondary windings 12 such that the primary winding 12 and the secondary winding 14 of the transformer 10 are alternately stacked with each other for resonance of the resonance type power converter. , 14) to be opposed to each other, and then wound in a roll shape to the iron core core (19).
즉, 도 4에서 보는 바와 같이 본 발명의 일실시예로서, 공진형 전력변환기의 공진을 위해 동일한 형상의 1차측과 2차측 권선(12, 14)을 적층 또는 상호 대향하도록 적층한 후 두루마리 형상으로 돌려 감는다.That is, as shown in Figure 4 as an embodiment of the present invention, for the resonance of the resonant power converter, the primary and secondary windings (12, 14) of the same shape are stacked or stacked to face each other and then rolled into a roll shape. Rewind
전체적으로 동판으로 이루어진 상기 1차측과 2차측 권선(12, 14)은 각각 절연시킨다.The primary and secondary windings 12, 14, which are made entirely of copper, are insulated, respectively.
상기 권선들(12, 14)은 평판 권선으로서, 예를 들어 A4 용지 사이즈의 절연된 동판 두 장을 겹쳐 사용할 수 있다.The windings 12 and 14 are flat windings, for example two overlapping copper sheets of A4 paper size.
따라서 1차측 권선(12)과 2차측 권선(14)이 서로 교번하여 적층되도록 제작하여, 1차측과 2차측 권선에서 발생되는 누설자속(화살표 표시)이 서로 상쇄되어 변압기의 누설자속을 현저하게 줄일 수 있다.Therefore, the primary winding 12 and the secondary winding 14 are manufactured to be alternately stacked with each other, so that the leakage flux (arrow mark) generated in the primary and secondary windings cancel each other to significantly reduce the leakage flux of the transformer. Can be.
한편, 도 5의 본 발명의 일실시예에 따른 공진형 Half Bridge DC to DC 컨버터를 보면, IGBT(22; insulated gate bipolar mode transistor)와 다이오드(26) 등으로 이루어져 있으며, 스플릿 캐패시터(24)와 변압기(10)의 누설 인덕턴스와 공진을 발생시켜 교번자계를 만드는 장치로써, 본 발명에 따라 변압기(10)의 누설인덕턴스를 감소시키는 경우 스플릿 캐패시터(24)의 양단 전압 변동을 최소화 시킬 수 있다.On the other hand, the resonant half-bridge DC to DC converter according to an embodiment of the present invention of Figure 5, IGBT (22; insulated gate bipolar mode transistor) and the diode 26, etc., the split capacitor 24 and As a device for generating an alternating magnetic field by generating resonance and leakage inductance of the transformer 10, according to the present invention, when the leakage inductance of the transformer 10 is reduced, voltage fluctuations at both ends of the split capacitor 24 may be minimized.
도 6의 본 발명의 일실시예에 따른 공진형 Full Bridge DC to DC 컨버터를 보면, IGBT(22')와 다이오드(26')와 공진 캐패시터(24') 등으로 이루어져 있으며, 본 발명에 따라 변압기(10')의 누설인덕턴스를 감소시키는 경우 스위칭 주파수를 높일 수 있거나 또는 공진 커패시터에 충전되는 전류량을 감소시켜 커패시터 전압레벨을 낮출 수 있다.Referring to the resonance type full bridge DC to DC converter according to an embodiment of the present invention of Figure 6, IGBT (22 ') and the diode 26' and the resonant capacitor (24 '), etc., according to the present invention In the case of reducing the leakage inductance of 10 ', the switching frequency may be increased or the amount of current charged in the resonant capacitor may be reduced to lower the capacitor voltage level.
다시 말해, 본 발명은 공진형 Half Bridge DC to DC 컨버터에서 누설 인덕턴스와 공진을 발생시켜 교번자계를 생성시키기 위하여, 상기 변압기의 누설인덕턴스를 기준치(일정치) 보다 감소시키는 경우 상기 스플릿 캐패시터의 양단 전압 변동을 종래 보다 감소시키거나, 공진형 Full Bridge DC to DC 컨버터에서, 상기 변압기의 누설인덕턴스를 기준치 보다 감소시키는 경우 스위칭 주파수를 종래 보다 높일 수 있거나 또는 공진 커패시터에 충전되는 전류량을 감소시켜 커패시터 전압레벨을 낮출 수 있다. 여기에서 기준치는 종래 발명을 기준으로 한 수치이다.In other words, in order to generate an alternating magnetic field by generating leakage inductance and resonance in a resonant half bridge DC to DC converter, when the leakage inductance of the transformer is reduced to a reference value (constant), the voltage across the split capacitor In the resonant type full bridge DC to DC converter, when the fluctuation is reduced compared to the conventional method, when the leakage inductance of the transformer is lowered than the reference value, the switching frequency can be increased than before, or the amount of current charged in the resonant capacitor can be reduced so that the capacitor voltage level Can be lowered. Here, the reference value is a numerical value based on the conventional invention.
따라서, 도 5와 도 6에서 보는 바와 같이 본 발명은 공진현상과 관련된 커패시터나 인덕터의 파라미터가 작을 경우 공진주파수를 상승시켜 시스템을 소형화할 수 있다. Therefore, as shown in FIGS. 5 and 6, the present invention can reduce the size of the system by increasing the resonance frequency when the parameter of the capacitor or inductor related to the resonance phenomenon is small.
이상에서 설명된 본 발명의 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기의 실시예는 예시적인 것에 불과하며, 본 발명이 속한 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 잘 알 수 있을 것이다. The embodiment of the transformer for a resonant power converter using the leakage flux reducing winding method of the present invention described above is merely illustrative, and those skilled in the art to which the present invention pertains various modifications and equivalents therefrom. It will be appreciated that other embodiments are possible.
그러므로 본 발명은 상기의 상세한 설명에서 언급되는 형태로만 한정되는 것은 아님을 잘 이해할 수 있을 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. 또한, 본 발명은 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 그 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.
[부호의 설명][Description of the code]
10, 10' : 변압기 12 : 1차측 권선10, 10 ': transformer 12: primary winding
14 : 2차측 권선 19 : 코어14: secondary winding 19: core
22, 22' : IGBT 24 : Split Capacitor(스플릿 캐패시터)22, 22 ': IGBT 24: Split Capacitor
24' : resonant capacitor(공진 캐패시터) 26, 26' : (다이오드)24 ': resonant capacitor 26, 26': (diode)

Claims (4)

  1. 공진형 전력변환기용 변압기에 있어서, 1차측 권선과 2차측 권선을 각각 절연시킨 후 1차측 권선과 2차측 권선이 서로 포개지도록 배치되고, 상기 1차측 권선과 2차측 권선이 변압기 코어를 중심축으로 하여 변압기 권선수 만큼 돌려 감아 이루어진 것을 특징으로 하는 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기.In a transformer for a resonant power converter, the primary winding and the secondary winding are insulated from each other, and the primary winding and the secondary winding are arranged to overlap each other, and the primary winding and the secondary winding are centered on the transformer core. A transformer for a resonant type power converter using a leakage flux reducing winding method, characterized in that the windings are wound by the number of turns of the transformer.
  2. 제1항에 있어서,The method of claim 1,
    상기 권선은 평판 권선인 것을 특징으로 하는 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기.The winding is a resonant type transformer for transformer using a leakage flux reduction winding method, characterized in that the flat winding.
  3. 제1항에 있어서,The method of claim 1,
    상기 공진형 전력변환기용 변압기는,The resonant power converter transformer,
    IGBT와 다이오드 및 스플릿 캐패시터로 이루어진 공진형 Half Bridge DC to DC 컨버터에서, 누설 인덕턴스와 스플릿 캐패시터간에 공진 전류를 발생시켜 변압기에 교번자계 발생시, 변압기의 누설인덕턴스가 크고, 공진전류가 큰 경우 상기 스플릿 캐패시터에 많은 전하를 축적시켜 스플릿 캐패시터 양단 전압 변동이 커지는 것을 감소시키도록 이루어진 것을 특징으로 하는, 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기.In a resonant type half bridge DC to DC converter consisting of an IGBT, a diode, and a split capacitor, a resonance current is generated between the leakage inductance and the split capacitor, and when the alternating magnetic field is generated in the transformer, when the leakage inductance of the transformer is large and the resonance current is large, the split capacitor A transformer for a resonant power converter using a leakage flux reducing winding method, characterized in that a large amount of charge is accumulated in the capacitor to reduce a large voltage variation across the split capacitor.
  4. 제1항에 있어서,The method of claim 1,
    상기 공진형 전력변환기용 변압기는,The resonant power converter transformer,
    IGBT와 다이오드 및 공진 캐패시터로 이루어진 공진형 Full Bridge DC to DC 컨버터에서, 상기 변압기의 누설인덕턴스를 기준치 보다 감소시키는 경우 스위칭 주파수를 높일 수 있거나 또는 공진 커패시터에 충전되는 전류량을 감소시켜 커패시터 전압레벨을 낮추도록 이루어진 것을 특징으로 하는, 누설자속저감 권선법을 이용한 공진형 전력변환기용 변압기.In a resonant full bridge DC to DC converter consisting of an IGBT, a diode, and a resonant capacitor, when the leakage inductance of the transformer is lower than the reference value, the switching frequency can be increased or the amount of current charged in the resonant capacitor can be reduced to decrease the capacitor voltage level. A resonant power converter transformer using a leakage flux reducing winding method, characterized in that consisting of.
PCT/KR2014/011400 2014-02-03 2014-11-26 Transformer for resonant power converter using winding method for reducing leakage flux WO2015115726A1 (en)

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