JP2020129856A5 - Current transformer and electromagnetic induction type power generation device using this - Google Patents
Current transformer and electromagnetic induction type power generation device using this Download PDFInfo
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- JP2020129856A5 JP2020129856A5 JP2019020438A JP2019020438A JP2020129856A5 JP 2020129856 A5 JP2020129856 A5 JP 2020129856A5 JP 2019020438 A JP2019020438 A JP 2019020438A JP 2019020438 A JP2019020438 A JP 2019020438A JP 2020129856 A5 JP2020129856 A5 JP 2020129856A5
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- 238000010248 power generation Methods 0.000 title claims 11
- 230000005674 electromagnetic induction Effects 0.000 title claims 2
- 230000004907 flux Effects 0.000 claims 14
- 230000005540 biological transmission Effects 0.000 claims 7
- 230000000694 effects Effects 0.000 claims 5
- 230000000875 corresponding Effects 0.000 claims 3
- 238000004804 winding Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 1
Claims (8)
前記磁性コアに巻回された二次巻線としての発電コイルと、
前記磁性コアに巻回された三次巻線としての減磁コイルと、
前記送電線に電流が流れることで前記磁性コアに発生する磁束の向きと逆向きの磁束が発生するように前記減磁コイルを駆動する磁束低減部とを備えることを特徴とするカレントトランス。 A magnetic core that can be attached to a transmission line as a primary winding,
A power generation coil as a secondary winding wound around the magnetic core,
A demagnetizing coil as a tertiary winding wound around the magnetic core,
A current transformer including a magnetic flux reducing unit that drives the demagnetizing coil so that a magnetic flux in the direction opposite to the direction of the magnetic flux generated in the magnetic core is generated when a current flows through the transmission line.
前記減磁コイルに接続された複数の接点を有するスイッチ回路と、
前記送電線に電流が流れることで前記磁性コアに発生する磁束に対応する前記発電コイルの端子間電圧が閾値を超えたとき、前記端子間電圧が大きいほど前記磁性コアに流れる磁束を減磁する効果が大きくなるように、前記スイッチ回路を切り替えて前記減磁コイルの有効ターン数を制御するスイッチ制御部を含む、請求項１に記載のカレントトランス。 The magnetic flux reducing unit
A switch circuit having a plurality of contacts connected to the demagnetizing coil and
When the voltage between the terminals of the power generation coil corresponding to the magnetic flux generated in the magnetic core due to the current flowing through the transmission line exceeds the threshold value, the larger the voltage between the terminals, the more the magnetic flux flowing in the magnetic core is demagnetized. The current transformer according to claim 1, further comprising a switch control unit that switches the switch circuit to control the number of effective turns of the demagnetizing coil so as to increase the effect.
前記スイッチ回路は、前記発電コイルの端子間電圧が閾値を超えたとき、前記端子間電圧が大きいほど前記端子間電圧を減圧する効果が大きくなるように、前記減圧コイルの一端及び前記中間タップからいずれか一つを選択して前記発電コイルに接続する、請求項２に記載のカレントトランス。 The decompression coil has at least one intermediate tap and
In the switch circuit, when the voltage between terminals of the power generation coil exceeds the threshold value, the effect of reducing the voltage between terminals increases as the voltage between terminals increases, so that the effect of reducing the voltage between terminals becomes greater from one end of the pressure reducing coil and the intermediate tap. The current transformer according to claim 2, wherein any one of them is selected and connected to the power generation coil.
前記送電線に電流が流れることで前記磁性コアに発生する磁束に対応する前記発電コイルの端子間電圧が閾値を超えたとき、前記端子間電圧が大きいほど前記磁性コアに流れる磁束を減磁する効果が大きくなるように、前記減磁コイルに流れる電流の大きさを制御する電流制御部を含む、請求項１に記載のカレントトランス。 The magnetic flux reducing unit
When the voltage between the terminals of the power generation coil corresponding to the magnetic flux generated in the magnetic core due to the current flowing through the transmission line exceeds the threshold value, the larger the voltage between the terminals, the more the magnetic flux flowing in the magnetic core is demagnetized. The current transformer according to claim 1, further comprising a current control unit that controls the magnitude of a current flowing through the demagnetizing coil so as to increase the effect.
前記送電線に電流が流れることで前記磁性コアに発生する磁束に対応する前記発電コイルの端子間電圧を検出する電圧検出部と、
前記発電コイルの端子間電圧が閾値を超えたとき、前記端子間電圧が大きいほど前記磁性コアに流れる磁束を減磁する効果が大きくなるように、前記減磁コイルに流れる電流の位相を制御する位相制御部を含む、請求項１に記載のカレントトランス。 The magnetic flux reducing unit
A voltage detection unit that detects the voltage between the terminals of the power generation coil corresponding to the magnetic flux generated in the magnetic core when a current flows through the transmission line.
When the voltage between terminals of the power generation coil exceeds the threshold value, the phase of the current flowing through the demagnetizing coil is controlled so that the larger the voltage between terminals, the greater the effect of demagnetizing the magnetic flux flowing through the magnetic core. The current transformer according to claim 1, which includes a phase control unit.
前記減磁コイルには、前記送電線に電流が流れることで前記磁性コアに発生する磁束の向きと逆向きの磁束を発生させる電圧が印加される、請求項１乃至６のいずれか一項に記載のカレントトランス。 The demagnetizing coil is wound in the same direction as the power generation coil.
According to any one of claims 1 to 6, a voltage is applied to the demagnetizing coil to generate a magnetic flux in the direction opposite to the direction of the magnetic flux generated in the magnetic core when a current flows through the transmission line. The current transformer described.
前記カレントトランスに接続された電源回路とを備えることを特徴とする電磁誘導型発電装置。 The current transformer according to any one of claims 1 to 7.
An electromagnetic induction type power generation device including a power supply circuit connected to the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019020438A JP2020129856A (en) | 2019-02-07 | 2019-02-07 | Current transformer and electromagnetic induction power generation device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019020438A JP2020129856A (en) | 2019-02-07 | 2019-02-07 | Current transformer and electromagnetic induction power generation device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020129856A JP2020129856A (en) | 2020-08-27 |
| JP2020129856A5 true JP2020129856A5 (en) | 2020-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019020438A Pending JP2020129856A (en) | 2019-02-07 | 2019-02-07 | Current transformer and electromagnetic induction power generation device using the same |
Country Status (1)
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| JP (1) | JP2020129856A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7419890B2 (en) * | 2020-03-10 | 2024-01-23 | 富士電機株式会社 | power supply |
| CN117060601B (en) * | 2023-10-12 | 2024-02-20 | 南方电网数字电网研究院股份有限公司 | Electromagnetic induction energy taking device and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2932332B2 (en) * | 1992-07-02 | 1999-08-09 | 三菱電機株式会社 | Current sensor |
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2019
- 2019-02-07 JP JP2019020438A patent/JP2020129856A/en active Pending
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