JP2004080908A - Pulsed power supply device - Google Patents

Pulsed power supply device Download PDF

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Publication number
JP2004080908A
JP2004080908A JP2002238141A JP2002238141A JP2004080908A JP 2004080908 A JP2004080908 A JP 2004080908A JP 2002238141 A JP2002238141 A JP 2002238141A JP 2002238141 A JP2002238141 A JP 2002238141A JP 2004080908 A JP2004080908 A JP 2004080908A
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JP
Japan
Prior art keywords
pulse
power supply
pulse transformer
winding
supply device
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Pending
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JP2002238141A
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Japanese (ja)
Inventor
Yuji Oyama
大山 裕二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Electric Manufacturing Ltd
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Toyo Electric Manufacturing Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP2002238141A priority Critical patent/JP2004080908A/en
Publication of JP2004080908A publication Critical patent/JP2004080908A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • H01F2027/2833Wires using coaxial cable as wire

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pulse power supply device, wherein a voltage with a steep leading edge is obtained by a pulse transformer of superior coupling between primary winding and secondary winding and is low in leakage inductance, and the winding work for the pulse transformer is facilitated. <P>SOLUTION: The pulse power supply device comprises a power supply for charging; a capacitor which is charged by the power supply for charging; the pulse transformer which uses either of the core wire and the outer wire of a coaxial electric wire wound on a magnetic core as primary winding and the other as a secondary winding, and transfers the electric charges charged in the capacitor to the output side; and a switching element which is connected in series with the primary winding of the pulse transformer and discharges the electric charges charged in the capacitor through the pulse transformer. Thus, the coupling between windings is kept proper; the influences of leakage inductance is reduced; and a steep leading edge for pulse voltage is obtained. By providing the pulse power supply device is provided with a plurality of the pulse transformers, connecting the primary windings in parallel, and connecting the secondary windings are connected, high-voltage pulses are generated. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、パルストランスと、スイッチング素子を用いて高電圧パルスを発生させるパルス電源装置に関するものであり、特に、出力パルス電圧の急峻な立ち上がりを実現するパルス電源装置に関するものである。
【0002】
【従来の技術】
コンデンサに充電された電荷を、パルストランスとスイッチング素子を介して放電させ、パルストランス2次巻線に高電圧パルス電圧を発生させるパルス電源装置については公知である。
以下に、従来のパルス電源装置について、図4のパルストランスを用いたパルス電源装置の回路を参照して詳述する。
図4において、1は充電用電源、2は放電用コンデンサ、21はパルストランス、4は半導体スイッチ、5は正極出力端子、6は負極出力端子である。
【0003】
充電用電源1により充電される放電用コンデンサ2には、パルストランス21の1次巻線と半導体スイッチ4が直列に接続される。
放電用コンデンサ2が充分に充電された後、半導体スイッチ4にスイッチング信号を入力すると、放電用コンデンサ2からパルストランス21の1次巻線、半導体スイッチ4へと放電電流が流れ、パルストランス21の2次巻線に接続された正極出力端子5と負極出力端子6の間に、ピーク電圧が電源電圧とパルストランス巻数比の積になる高圧パルス電圧が発生する。
このとき、半導体スイッチ4に入力されるスイッチング信号は、パルストランス21に使用される磁心を飽和させないような電圧時間積の範囲で、パルス幅が調節される。
【0004】
図5は、一般的な構造のパルストランスの断面図であり、前記図4に記載の、パルストランス21の一般的な構造を示す図である。
図5において、11は磁心、31は1次巻線、32は層間絶縁、33は2次巻線である。
磁心11の上に1次巻線31を施し、その上に層間絶縁32、さらにその上に2次巻線33を施してある。層間絶縁32は1次・2次巻線間の絶縁破壊を防止するためのものである。
図5では、EI型磁心にてパルストランスを構成した例であるが、その他にトロイダル型、EE型の磁心を用いた場合も、同様の構造となる。
【0005】
【発明が解決しようとする課題】
しかしながら、前記のパルストランスの構造では、1次・2次巻線間の結合が悪く、漏れインダクタンスの影響でパルスの立上りが鈍化したり、漏れインダクタンスと浮遊容量により出力電圧に共振が発生するという問題があった。
また、パルストランスの製作上の問題として、磁心に巻線を施す際、1次巻線、層間絶縁、2次巻線を層状に巻くために、3回の巻線工程を行わなくてはならず、作業の煩雑な点も問題であった。
本発明は上記事情に鑑みなされたものであって、主としてその目的とするところは、1次・2次巻線間の結合度が良好で、漏れインダクタンスの少ないパルストランスにより、立上りの急峻なパルス電圧を実現し、パルストランスの巻線施工も簡単なパルス電源装置を提供することである。
【0006】
【課題を解決するための手段】
従って、本発明では、パルス電源装置のパルストランスの巻線に、同軸電線を使用し、同軸電線の芯線もしくは外側線を1次巻線に、他方を2次巻線に用いることで、1次・2次巻線間の結合度を良好に保ち、漏れインダクタンスの影響を最小にするものである。
【0007】
本発明は上記原理に基づき、前述の課題を解決するものであり、その目的を達成するための手段は、
1)、請求項1において
パルストランスと半導体スイッチング素子により、パルストランス2次巻線にパルス電圧を発生させるパルス電源装置において、パルストランスの巻線に同軸電線を巻装したことを特徴とするものである。
【0008】
2)、請求項2において
請求項1記載のパルス電源装置において、巻線に同軸電線を用いたパルストランスを複数個使用し、全トランスの1次巻線を並列接続にし、全トランスの2次巻線を直列接続することで、高電圧パルスを出力することができることを特徴とするものである。
【0009】
【発明の実施の形態】
図1は、本発明の、同軸巻線型パルストランスと、半導体スイッチング素子を用いた請求項1のパルス電源装置の回路図である。
図1において、3は同軸巻線型パルストランスであり、図4と同一番号は同一構成図品を示す。
以下、図1について説明する。
【0010】
同軸巻線型パルストランス3は、同軸巻線の芯線もしくは外側線を1次巻線とし、他方を2次巻線とする。
図4と同様、充電用電源1により充電される放電用コンデンサ2に、同軸巻線型パルストランス3の1次巻線と、半導体スイッチング素子4が直列接続される。同軸巻線型トランス3の2次巻線は、正極出力端子5、負極出力端子6に接続される。
放電用コンデンサ2が充分に充電されたあと、半導体スイッチング素子4にスイッチング信号を入力すると、放電用コンデンサ2から、同軸巻線型パルストランス3の1次巻線、半導体スイッチング素子を通る放電電流が流れ、同軸巻線型パルストランス3の2次巻線に、ピーク電圧が充電用電源1と同一のパルス電圧が発生する。
【0011】
このように構成されるパルス電源装置では、パルストランスの1次・2次巻線間の結合度が良好であるため、漏れインダクタンスの影響が少なく、急峻な立上りのパルス電圧を出力することが可能である。
【0012】
図2は、本発明の、複数の同軸巻線型パルストランスと、半導体スイッチング素子を用いた、請求項2のパルス電源装置の回路図である。
図2において、図1と同一番号は同一構成部品を示す。
同軸巻線型パルストランス3は複数個用意し、それぞれの1次巻線は極性を揃えて並列接続し、スイッチング素子4と直列接続したものを、放電用コンデンサ2へ接続する。一方、それぞれの2次巻線は直列接続とし、最上段トランスの正極を正極出力端子5へ、最下段トランスの負極を負極出力端子6へ接続する。
図1の回路と同様、放電用コンデンサ2が充分に充電されたあと、半導体スイッチング素子4にスイッチング信号を入力すると、正極出力端子5と負極出力端子6の間にパルス電圧が発生するが、このときのピーク電圧は、充電用電源1の電圧と、用意した同軸巻線型パルストランス3の個数の積となる。
【0013】
このように構成されたパルス電源装置では、パルストランスの1次・2次巻線間の結合度を良好に保ったまま、パルストランスの個数分だけ1次側電圧を昇圧して出力することが可能である。
【0014】
図3は、本発明の、同軸巻線型パルストランスの実施例を示す、断面構造図である。
図2において、11は磁心、12は同軸巻線である。
磁心11の上に、同軸電線を巻いて同軸巻線12としたものであり、同軸電線の芯線13もしくは外側線14を1次巻線に、他方を2次巻線とする。ここで磁心11が無く、空心構造とした同軸巻線型パルストランスにも適用可能である。このような構造でパルストランスを製作すると、1次・2次巻線の結合度が良好になるばかりでなく、図5のような層間絶縁を施す工程が不要になり、また、巻線の製作工程が簡略化されるなどで安価となる。
【0015】
【発明の効果】
以上、同軸電線を巻線にしたパルストランスにて構成されるパルス電源装置について説明した。
この方法によれば、パルストランスの漏れインダクタンスの影響が少なく、パルスの立上りが急峻で、製作の簡単なパルス電源装置が実現できるので、実用上多いに有用である。
【図面の簡単な説明】
【図1】本発明の、同軸巻線型パルストランスを用いた、パルス電源装置の回路図である。
【図2】本発明の、同軸巻線型パルストランスを複数用いた、パルス電源装置の回路図である。
【図3】本発明の、同軸巻線型パルストランスの断面構造を示した図である。
【図4】パルストランスと半導体スイッチング素子を用いたパルス電源装置の回路図である。
【図5】一般的なパルストランスの断面構造を示した図である。
【符号の説明】
1    充電用電源
2    放電用コンデンサ
3    同軸巻線型パルストランス
4    半導体スイッチング素子
5    正極出力端子
6    負極出力端子
11   磁心
12   同軸巻線
13   芯線
14   外側線
21   パルストランス
31   1次巻線
32   層間絶縁
33   2次巻線
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pulse power supply device that generates a high-voltage pulse using a pulse transformer and a switching element, and particularly to a pulse power supply device that realizes a steep rise of an output pulse voltage.
[0002]
[Prior art]
2. Description of the Related Art A pulse power supply device that discharges a charge stored in a capacitor through a pulse transformer and a switching element and generates a high-voltage pulse voltage in a secondary winding of the pulse transformer is known.
Hereinafter, a conventional pulse power supply device will be described in detail with reference to the circuit of the pulse power supply device using the pulse transformer of FIG.
In FIG. 4, 1 is a charging power supply, 2 is a discharging capacitor, 21 is a pulse transformer, 4 is a semiconductor switch, 5 is a positive output terminal, and 6 is a negative output terminal.
[0003]
The primary winding of the pulse transformer 21 and the semiconductor switch 4 are connected in series to the discharging capacitor 2 charged by the charging power supply 1.
When the switching signal is input to the semiconductor switch 4 after the discharge capacitor 2 is sufficiently charged, a discharge current flows from the discharge capacitor 2 to the primary winding of the pulse transformer 21 and the semiconductor switch 4, Between the positive output terminal 5 and the negative output terminal 6 connected to the secondary winding, a high-voltage pulse voltage whose peak voltage is the product of the power supply voltage and the turns ratio of the pulse transformer is generated.
At this time, the pulse width of the switching signal input to the semiconductor switch 4 is adjusted within a range of a voltage-time product that does not saturate the magnetic core used in the pulse transformer 21.
[0004]
FIG. 5 is a sectional view of a pulse transformer having a general structure, and is a diagram showing a general structure of the pulse transformer 21 described in FIG.
In FIG. 5, 11 is a magnetic core, 31 is a primary winding, 32 is interlayer insulation, and 33 is a secondary winding.
A primary winding 31 is provided on the magnetic core 11, an interlayer insulation 32 is provided thereon, and a secondary winding 33 is provided thereon. The interlayer insulation 32 is for preventing dielectric breakdown between the primary and secondary windings.
FIG. 5 shows an example in which the pulse transformer is constituted by an EI-type magnetic core, but the same structure is also obtained when a toroidal-type or EE-type magnetic core is used.
[0005]
[Problems to be solved by the invention]
However, in the structure of the pulse transformer, the coupling between the primary and secondary windings is poor, the rise of the pulse is slowed down by the influence of the leakage inductance, and resonance occurs in the output voltage due to the leakage inductance and the stray capacitance. There was a problem.
Also, as a problem in manufacturing the pulse transformer, when winding the core, it is necessary to perform three winding steps in order to wind the primary winding, the interlayer insulation, and the secondary winding in layers. However, there was a problem in that the work was complicated.
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main object thereof is to provide a pulse transformer having a good degree of coupling between primary and secondary windings and a pulse transformer having a small leakage inductance and having a sharp rise. It is an object of the present invention to provide a pulse power supply device that realizes a voltage and allows easy winding of a pulse transformer.
[0006]
[Means for Solving the Problems]
Therefore, according to the present invention, a coaxial electric wire is used for the winding of the pulse transformer of the pulse power supply device, the core wire or the outer wire of the coaxial electric wire is used for the primary winding, and the other is used for the secondary winding.・ The degree of coupling between the secondary windings is kept good, and the influence of the leakage inductance is minimized.
[0007]
The present invention is based on the above principle and solves the above-mentioned problems, and means for achieving the object are as follows:
1) A pulse power supply device for generating a pulse voltage in a secondary winding of a pulse transformer by a pulse transformer and a semiconductor switching element according to claim 1, wherein a coaxial electric wire is wound around the winding of the pulse transformer. It is.
[0008]
2) The pulse power supply device according to claim 1, wherein a plurality of pulse transformers each using a coaxial electric wire for the winding are used, and the primary windings of all the transformers are connected in parallel, and the secondary windings of all the transformers are connected. A high voltage pulse can be output by connecting the windings in series.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a circuit diagram of a pulse power supply device according to claim 1 using a coaxial winding type pulse transformer and a semiconductor switching element of the present invention.
In FIG. 1, reference numeral 3 denotes a coaxial winding type pulse transformer, and the same reference numerals as those in FIG.
Hereinafter, FIG. 1 will be described.
[0010]
The coaxial winding type pulse transformer 3 uses the core wire or the outer wire of the coaxial winding as a primary winding and the other as a secondary winding.
4, a primary winding of a coaxial winding type pulse transformer 3 and a semiconductor switching element 4 are connected in series to a discharging capacitor 2 charged by a charging power supply 1. The secondary winding of the coaxial winding type transformer 3 is connected to a positive output terminal 5 and a negative output terminal 6.
When a switching signal is input to the semiconductor switching element 4 after the discharge capacitor 2 is sufficiently charged, a discharge current flows from the discharge capacitor 2 through the primary winding of the coaxial winding type pulse transformer 3 and the semiconductor switching element. A pulse voltage having the same peak voltage as the charging power supply 1 is generated in the secondary winding of the coaxial winding type pulse transformer 3.
[0011]
In the pulse power supply device configured as described above, since the degree of coupling between the primary and secondary windings of the pulse transformer is good, the influence of the leakage inductance is small, and a steep rising pulse voltage can be output. It is.
[0012]
FIG. 2 is a circuit diagram of a pulse power supply device according to claim 2 using a plurality of coaxial winding type pulse transformers and a semiconductor switching element of the present invention.
2, the same numbers as those in FIG. 1 indicate the same components.
A plurality of coaxial winding type pulse transformers 3 are prepared, the respective primary windings are connected in parallel with the same polarity, and those connected in series with the switching element 4 are connected to the discharging capacitor 2. On the other hand, the respective secondary windings are connected in series, and the positive pole of the uppermost transformer is connected to the positive output terminal 5 and the negative pole of the lowermost transformer is connected to the negative output terminal 6.
As in the circuit of FIG. 1, when a switching signal is input to the semiconductor switching element 4 after the discharging capacitor 2 is sufficiently charged, a pulse voltage is generated between the positive output terminal 5 and the negative output terminal 6. The peak voltage at this time is the product of the voltage of the charging power supply 1 and the number of the prepared coaxial winding type pulse transformers 3.
[0013]
In the pulse power supply device configured as described above, it is possible to increase the primary voltage by the number of pulse transformers and output the same while maintaining good coupling between the primary and secondary windings of the pulse transformer. It is possible.
[0014]
FIG. 3 is a sectional structural view showing an embodiment of a coaxial winding type pulse transformer according to the present invention.
In FIG. 2, reference numeral 11 denotes a magnetic core, and 12 denotes a coaxial winding.
A coaxial electric wire is wound around a magnetic core 11 to form a coaxial winding 12. The core wire 13 or the outer wire 14 of the coaxial electric wire is used as a primary winding, and the other is used as a secondary winding. Here, the present invention can be applied to a coaxial winding type pulse transformer having no core 11 and an air core structure. Manufacturing a pulse transformer with such a structure not only improves the degree of coupling between the primary and secondary windings, but also eliminates the step of providing interlayer insulation as shown in FIG. The process is simplified and the cost is reduced.
[0015]
【The invention's effect】
The pulse power supply device configured by the pulse transformer having the coaxial wire wound has been described above.
According to this method, a pulse power supply device having a small influence of the leakage inductance of the pulse transformer, a steep rise of the pulse, and a simple manufacture can be realized, which is practically useful.
[Brief description of the drawings]
FIG. 1 is a circuit diagram of a pulse power supply device using a coaxial winding type pulse transformer according to the present invention.
FIG. 2 is a circuit diagram of a pulse power supply device using a plurality of coaxial winding type pulse transformers of the present invention.
FIG. 3 is a diagram showing a cross-sectional structure of a coaxial winding type pulse transformer according to the present invention.
FIG. 4 is a circuit diagram of a pulse power supply device using a pulse transformer and a semiconductor switching element.
FIG. 5 is a diagram showing a cross-sectional structure of a general pulse transformer.
[Explanation of symbols]
Reference Signs List 1 charging power supply 2 discharging capacitor 3 coaxial winding type pulse transformer 4 semiconductor switching element 5 positive output terminal 6 negative output terminal 11 magnetic core 12 coaxial winding 13 core wire 14 outer wire 21 pulse transformer 31 primary winding 32 interlayer insulation 33 2 Next winding

Claims (2)

パルストランスを備えたパルス電源装置において、充電用電源と、該充電用電源により充電されるコンデンサと、磁心に巻装した同軸電線の芯線もしくは外側線を1次巻線、他方を2次巻線とする、前記コンデンサの充電電荷を出力側に伝達するパルストランスと、該パルストランスの1次巻線に直列に接続され、前記コンデンサの充電電荷を前記パルストランスを通して放電するスイッチング素子を備えたことを特徴とするパルス電源装置。In a pulse power supply device equipped with a pulse transformer, a charging power supply, a capacitor charged by the charging power supply, a core wire or an outer wire of a coaxial electric wire wound around a magnetic core are primary windings, and the other is a secondary winding. A pulse transformer for transmitting the charge of the capacitor to the output side, and a switching element connected in series to a primary winding of the pulse transformer and discharging the charge of the capacitor through the pulse transformer. A pulse power supply device characterized by the above-mentioned. 前記請求項1記載のパルス電源装置で、前記パルストランスを複数備え、1次巻線を並列接続し、2次巻線を直列接続することにより、高電圧パルスを発生させることを特徴とするパルス電源装置。2. The pulse power supply device according to claim 1, wherein a plurality of said pulse transformers are provided, and a high voltage pulse is generated by connecting a primary winding in parallel and a secondary winding in series. Power supply.
JP2002238141A 2002-08-19 2002-08-19 Pulsed power supply device Pending JP2004080908A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010034276A (en) * 2008-07-29 2010-02-12 Denso Corp Transformer
JP2010199223A (en) * 2009-02-24 2010-09-09 Kyosan Electric Mfg Co Ltd Pulse transformer and pulsed power supply device
JP2010267521A (en) * 2009-05-15 2010-11-25 Mitsubishi Electric Corp High-voltage pulse generator
EP4123671A1 (en) * 2021-07-23 2023-01-25 Gunil Shin Electromagnetic wave shielding filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010034276A (en) * 2008-07-29 2010-02-12 Denso Corp Transformer
JP2010199223A (en) * 2009-02-24 2010-09-09 Kyosan Electric Mfg Co Ltd Pulse transformer and pulsed power supply device
JP2010267521A (en) * 2009-05-15 2010-11-25 Mitsubishi Electric Corp High-voltage pulse generator
EP4123671A1 (en) * 2021-07-23 2023-01-25 Gunil Shin Electromagnetic wave shielding filter

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