WO2020153609A1 - Dispositif d'inductance variable et son procédé de commande - Google Patents

Dispositif d'inductance variable et son procédé de commande Download PDF

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Publication number
WO2020153609A1
WO2020153609A1 PCT/KR2019/018054 KR2019018054W WO2020153609A1 WO 2020153609 A1 WO2020153609 A1 WO 2020153609A1 KR 2019018054 W KR2019018054 W KR 2019018054W WO 2020153609 A1 WO2020153609 A1 WO 2020153609A1
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WO
WIPO (PCT)
Prior art keywords
inductance
variable
coils
coil
resistance value
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PCT/KR2019/018054
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English (en)
Korean (ko)
Inventor
박종후
김경탁
Original Assignee
숭실대학교 산학협력단
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Publication of WO2020153609A1 publication Critical patent/WO2020153609A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers

Definitions

  • the present invention relates to a variable inductance device and a control method thereof, and more particularly, to an inductance variable device capable of variable control of inductance by a coupling inductor and a control method thereof.
  • an inductor means a coil that induces a voltage in proportion to the amount of change in current.
  • the inductance exhibits a property that interferes with the flow of electric current due to a change in the magnetic field generated inside or around the coil.
  • Inductors used in power conversion circuits such as DC-DC converters, DC-AC inverters, etc. mainly have functions of current smoothing, current suppression, energy storage, and removal of high-frequency components of voltage and current due to semiconductor switching elements.
  • Most inductors used in power conversion circuits have a fixed inductance value. Accordingly, it is not possible to properly respond to the newly required inductance value due to the surrounding environment or circuit changes.
  • variable inductors can be used.
  • the variable inductor mainly has a structure including a coil and a core.
  • Conventional variable inductors change the position of the core or generate additional magnetic force in the core to vary the inductance value using the magnetic saturation of the coil.
  • An aspect of the present invention provides an inductance variable device and a control method for varying the inductance by using a characteristic in which a current flow is distributed according to a resistance value in a parallel connection structure.
  • the inductance variable device of the present invention for solving the above problems is connected to a coupling inductor formed by winding a plurality of coils on a single core and at least one coil among the plurality of coils, and is connected to the plurality of coils according to a change in resistance value. It includes a variable resistor for dispersing the flowing current to vary the inductance by the coupling inductor.
  • the resistance value between the drain electrode and the source electrode may be changed according to the gate voltage of the variable resistor.
  • the feedback control method may further include a subtle controller that generates information on the gate voltage for generating a target inductance.
  • the coupling inductor, the plurality of coils are formed by winding in the same direction on the single core, the current flowing in the plurality of coils may flow in the same direction with the single core as an axis.
  • the coupling inductor may be formed by winding the plurality of coils in different directions on the single core so that current flowing through the plurality of coils flows in different directions with the single core as an axis.
  • variable resistor may be connected in series to at least one coil of the plurality of coils.
  • the inductance variable device of the present invention is a coupling inductor formed by winding a plurality of coils on a single core, and is connected in series to at least one coil of the plurality of coils, and receives current flowing through the plurality of coils according to a change in resistance value. It includes a variable resistor for dispersing and varying the inductance by the coupling inductor, and a degenerate controller for generating resistance value information of the variable resistor for generating a target inductance in a feedback control method.
  • control method of the inductance variable device of the present invention in a control method of an inductance variable device capable of varying the inductance by a coupling inductor formed by winding a plurality of coils on a single core, detecting electrical parameters from the coupling inductor Step, calculating an error between the electrical parameter and a target parameter, and generating resistance value information of a variable resistor connected in series with at least one coil of the plurality of coils using the calculated error to follow the target parameter And changing resistance values of the variable resistors using the resistance value information so that currents flowing through the plurality of coils can be distributed by the variable resistors.
  • the present invention it is possible to minimize its own power consumption for variable inductance, and when applied to a power conversion system, it is possible to generate inductance that can optimize the performance of the system, and it is possible to continuously vary inductance.
  • FIG. 1 is a view showing a variable inductance device according to an embodiment of the present invention.
  • FIG. 2 and 3 are circuit diagrams showing an example in which a variable resistor is connected in series to the first coil shown in FIG. 1.
  • FIG. 4 is a flow chart of a control method of a variable inductance device according to an embodiment of the present invention.
  • FIG. 1 is a view showing a variable inductance device according to an embodiment of the present invention.
  • the inductance variable apparatus 1000 may include a combined inductor 100, a variable resistor 200, and a weak controller 300.
  • the inductance variable apparatus 1000 has a fixed inductance by the coupling inductor 100, and it is possible to vary the inductance according to a change in the resistance value of the variable resistor 200.
  • the inductance variable apparatus 1000 may generate a desired inductance value within a variable range of the inductance by the feedback controller-based subtle controller 300.
  • the inductance variable apparatus 1000 can be used as a variable inductance element that is normally required in a power conversion system, and can generate an inductance that can optimize the performance of the system.
  • the inductance variable apparatus 1000 may include a plurality of coils 110 and 120 wound on a single core 101.
  • the first coil 110 and the second Two coils of the coil 120 are provided as an example.
  • the first coil 110 and the second coil 120 are formed by being wound around the single core 101 in the same direction so that the current flowing through the first coil 110 and the second coil 120 accumulates the single core 101. It can flow in the same direction.
  • the first coil 110 and the second coil 120 may be formed by being wound on a single core 101 in different directions.
  • the current flowing through the first coil 110 and the second coil 120 is distributed and flows in different directions with the single core 101 as an axis, and thus the magnetic flux is canceled so that the current is very small. It can generate inductance.
  • the variable resistance 200 is a variable resistance element capable of adjusting the resistance value.
  • variable resistor 200 may be implemented as a transistor in which the resistance value between the drain and the source varies according to the gate voltage.
  • the gate voltage of the transistor may be controlled to operate in an ohmic region, and the gate voltage may be controlled according to a signal applied from the subtle controller 300 described later.
  • variable resistor 200 may be connected in series with at least one of the first coil 110 and the second coil 120.
  • the variable resistor 200 is illustrated as being connected to the first coil 110, but may alternatively be connected to the second coil 120, or, the first coil 110 and the second coil 120 ).
  • variable resistor 200 may vary the inductance by the coupling inductor 100 by dispersing the current flowing through the first coil 110 and the second coil 120 by adjusting the resistance value. A detailed description in this regard will be described later with reference to FIG. 2 and below.
  • the floating controller 300 is a linear or nonlinear controller, and may generate resistance value information of the variable resistor 200 for generating a target inductance in a feedback control method.
  • the poor controller 300 may detect a predetermined electrical parameter corresponding to the element associated with the inductance value from the coupling inductor 100.
  • the floating controller 300 may be directly or indirectly connected to the coupling inductor 100 or directly or indirectly connected to the power conversion system to detect various electrical parameters.
  • the poor controller 300 may detect electrical parameters including at least one of voltage, current, phase, and magnitude observed at a predetermined portion of the coupling inductor 100 or circuit elements constituting the power conversion system. have.
  • the variable controller 300 can receive a target parameter from the outside, calculates an error by comparing the detected electrical parameter with the target parameter, and uses the calculated error to vary the resistance 200 required for tracking the target parameter It is possible to generate the resistance value information.
  • the poor controller 300 sets the target parameter as a reference value, and allows the currently measured electrical parameter to follow the reference value. It can calculate mutual error in real time and generate resistance value information to offset the error. .
  • the resistance value information may correspond to the gate voltage (or current) of the variable resistor 200 implemented by a transistor.
  • the negative controller 300 may apply a signal corresponding to the resistance value information to the variable resistor 200 to control the resistance value to generate a target inductance from the variable resistor 200. That is, the poor controller 300 may control the resistance of the variable resistor 200 by a feedback control method, thereby ultimately controlling the inductance by the coupling inductor 100.
  • FIG. 2 and 3 are circuit diagrams showing an example in which a variable resistor is connected in series to the first coil shown in FIG. 1.
  • the first coil 110 and the second coil 120 illustrated in FIG. 1 may be wound on a single core 101 in different directions or wound in the same direction to form a coupling inductor 100.
  • the first coil 110 and the second coil 120 are wound in different directions on the single core 101 to form the coupling inductor 100 as shown in FIG. 2, the first coil 110 and the second coil ( The current flowing through 120) may flow in different directions with the single core 101 as an axis.
  • the current flowing in the single core 101 may flow in the same direction.
  • the inductance generated by the coupling inductor 100 in which dots are formed in opposite directions as shown in FIG. 2 may have a smaller value than the inductance generated by the coupling inductor 100 formed in the same direction as in FIG. 3. .
  • the dots are in the opposite direction, the magnetic flux in the single core 101 is canceled. That is, when comparing FIG. 2 and FIG. 3, there is a difference in the size of the fixed inductance by the coupling inductor 100, and the fact that the fixed inductance can be varied by the variable resistor 200 is the same.
  • Equation 1 the current flowing through the coupling inductor 100
  • Equation 2 the voltage across the coupling inductor 100
  • Equation 1 I 2 is a current flowing through the second coil 120, I 1 is a current flowing through the first coil 110, and N is a winding ratio between the first coil 110 and the second coil 120. .
  • L eq is an inductance generated by the coupling inductor 100, and may be calculated as in Equation 3 below, and R eq means the resistance value of the variable resistor 200.
  • Equation 3 L m is the magnetization inductance, N is the winding ratio of the first coil 110 and the second coil 120, and R is the resistance value of the variable resistor 200.
  • variable resistor 200 may be connected in series with the first coil 110.
  • variable resistance 200 When the variable resistance 200 generates a sufficiently small resistance value, for example, a resistance value close to 0, the current may be distributed and flow toward the first coil 110 and the second coil 120. In this case, the coupling inductor 100 may generate a fixed inductance.
  • variable resistance 200 When the variable resistance 200 generates a sufficiently large resistance value, for example, a maximum resistance value within a variable resistance range, current may flow only toward the second coil 120.
  • the inductance by the coupling inductor 100 may have a value of a magnetization inductance by the second coil 120.
  • variable resistor 200 may vary the resistance value to disperse the current flowing through the first coil 110 and the second coil 120 to vary the inductance by the coupling inductor 100. For example, when the resistance value of the variable resistor 200 increases, the inductance by the coupling inductor 100 may be increased.
  • the inductance variable apparatus 1000 uses a characteristic in which a current flow is distributed according to a resistance value in a parallel connection structure, and thus a desired inductance within a variable range of the inductance of the coupling inductor 100. Can generate a value.
  • the variable range of the coupling inductor 100 is between the inductance of the plurality of coils 110 and 120 wound on the single core 101 or the magnetization inductance of either coil 110 or 120 wound on the single core 101. It can be a range of.
  • the inductance variable device 1000 can minimize its own power consumption for variable inductance, and when applied to a power conversion system, generates an inductance that can optimize the performance of the system And continuous inductance variable.
  • FIG. 4 is a flow chart of a control method of a variable inductance device according to an embodiment of the present invention.
  • the poor controller 300 may detect electrical parameters from the coupling inductor 100 (S10 ).
  • the poor controller 300 may detect a predetermined electrical parameter corresponding to an element associated with an inductance value from the coupling inductor 100.
  • the floating controller 300 may be directly or indirectly connected to the coupling inductor 100 or directly or indirectly connected to the power conversion system to detect various electrical parameters.
  • the poor controller 300 may detect electrical parameters including at least one of voltage, current, phase, and magnitude observed at a predetermined portion of the coupling inductor 100 or circuit elements constituting the power conversion system. have.
  • the poor controller 300 may calculate an error between the detected electrical parameter and the target parameter (S20), and generate resistance value information of the variable resistor 200 using the calculated error (S30).
  • the poor controller 300 may receive a target parameter from the outside.
  • the target parameter may be a parameter corresponding to an element associated with an inductance value required by the power conversion system.
  • the sub-controller 300 sets the target parameter as a reference value, and causes the detected electrical parameter to follow the reference value, and calculates real-time errors and generates resistance value information to offset the errors.
  • the resistance value information may correspond to the gate voltage (or current) of the variable resistor 200 implemented by a transistor.
  • the poor controller 300 may adjust the resistance value of the variable resistor 200 using the resistance value information (S40).
  • the negative controller 300 may apply a signal corresponding to the resistance value information to the variable resistor 200 to control the resistance value to generate a target inductance from the variable resistor 200. That is, the poor controller 300 may control the resistance of the variable resistor 200 by a feedback control method, thereby ultimately controlling the inductance value by the coupling inductor 100.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Networks Using Active Elements (AREA)

Abstract

La présente invention se rapporte à un dispositif d'inductance variable et à un procédé permettant de commander le dispositif d'inductance variable. Le dispositif d'inductance variable comprend : un inducteur couplé qui est formé par un noyau unique et de multiples bobines enroulées sur celui-ci; et une résistance variable qui est connectée à au moins une bobine parmi les multiples bobines et distribue le courant circulant à travers les multiples bobines en fonction de changements de valeur de résistance pour faire varier l'inductance produite par l'inducteur couplé.
PCT/KR2019/018054 2019-01-23 2019-12-19 Dispositif d'inductance variable et son procédé de commande WO2020153609A1 (fr)

Applications Claiming Priority (2)

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KR10-2019-0008739 2019-01-23
KR1020190008739A KR102185658B1 (ko) 2019-01-23 2019-01-23 인덕턴스 가변 장치 및 이의 제어방법

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112072624A (zh) * 2020-09-15 2020-12-11 国网山东省电力公司济南市历城区供电公司 一种基于铁芯式分裂电抗器的故障限流器
CN114242407A (zh) * 2021-12-07 2022-03-25 北京铁路信号有限公司 一种多线圈磁棒电感及其参数标定方法、天线和通讯设备

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JP2004140165A (ja) * 2002-10-17 2004-05-13 Matsushita Electric Ind Co Ltd 可変インダクタ
JP2006245455A (ja) * 2005-03-07 2006-09-14 Ricoh Co Ltd 可変インダクタ
KR20080011019A (ko) * 2006-07-28 2008-01-31 삼성전자주식회사 코일 블럭 및 이를 이용한 전자장치
JP2016031963A (ja) * 2014-07-28 2016-03-07 Tdk株式会社 コイル部品、コイル部品複合体およびトランス、ならびに電源装置
KR20180044616A (ko) * 2016-10-24 2018-05-03 숭실대학교산학협력단 전력 변환용 가변 인덕터 장치

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JP2001167944A (ja) 1999-12-07 2001-06-22 Tohoku Electric Power Co Inc 直列リアクトル制御形電圧安定化装置および電圧安定化方法
JP3959371B2 (ja) 2002-05-31 2007-08-15 株式会社東芝 可変インダクタ
JP3957206B2 (ja) * 2003-06-26 2007-08-15 イーエムシー株式会社 保安アース線用ノイズフィルタ及びこれを備えた電子装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004140165A (ja) * 2002-10-17 2004-05-13 Matsushita Electric Ind Co Ltd 可変インダクタ
JP2006245455A (ja) * 2005-03-07 2006-09-14 Ricoh Co Ltd 可変インダクタ
KR20080011019A (ko) * 2006-07-28 2008-01-31 삼성전자주식회사 코일 블럭 및 이를 이용한 전자장치
JP2016031963A (ja) * 2014-07-28 2016-03-07 Tdk株式会社 コイル部品、コイル部品複合体およびトランス、ならびに電源装置
KR20180044616A (ko) * 2016-10-24 2018-05-03 숭실대학교산학협력단 전력 변환용 가변 인덕터 장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112072624A (zh) * 2020-09-15 2020-12-11 国网山东省电力公司济南市历城区供电公司 一种基于铁芯式分裂电抗器的故障限流器
CN114242407A (zh) * 2021-12-07 2022-03-25 北京铁路信号有限公司 一种多线圈磁棒电感及其参数标定方法、天线和通讯设备
CN114242407B (zh) * 2021-12-07 2023-11-17 北京铁路信号有限公司 一种多线圈磁棒电感及其参数标定方法、天线和通讯设备

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KR102185658B1 (ko) 2020-12-02

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