JP2001087857A5 - Main circuit of arc welder and arc welder - Google Patents
Main circuit of arc welder and arc welder Download PDFInfo
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- JP2001087857A5 JP2001087857A5 JP1999266818A JP26681899A JP2001087857A5 JP 2001087857 A5 JP2001087857 A5 JP 2001087857A5 JP 1999266818 A JP1999266818 A JP 1999266818A JP 26681899 A JP26681899 A JP 26681899A JP 2001087857 A5 JP2001087857 A5 JP 2001087857A5
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- voltage
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- semiconductor
- arc welder
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- 239000004065 semiconductor Substances 0.000 claims description 37
- 238000009499 grossing Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Description
【０００１】
【発明の属する技術分野】
本発明は、ほぼ倍数関係にある二つの入力電圧を使用するアーク溶接機の主回路およびアーク溶接機に関するものである。
[0001]
[Technical field to which the invention belongs]
The present invention relates to a main circuit of an arc welder and an arc welder using two input voltages having a substantially multiple relationship.
【０００９】
【発明が解決しようとする課題】
しかしながら、図４に示す従来の主回路ではハーフブリッジ構成時に半導体パッケージの温度上昇が問題となる恐れがあった。
0009
[Problems to be Solved by the Invention]
However, in the conventional main circuit shown in FIG. 4, there is a risk that the temperature rise of the semiconductor package may become a problem in the half bridge configuration.
本発明は、ほぼ倍数関係にある二つの入力電圧を必要に応じて切り換えるアーク溶接機において、トランスの大型化を防止し、かつ半導体パッケージの温度上昇を低減できるアーク溶接機の主回路およびそれを応用したアーク溶接機を提供することを目的とする。 The present invention uses an arc welder that switches between two input voltages that are approximately multiples of each other as needed, and the main circuit of the arc welder that can prevent the transformer from becoming larger and reduce the temperature rise of the semiconductor package. It is an object of the present invention to provide an applied arc welder.
【００１１】
【課題を解決するための手段】
請求項１記載のアーク溶接機の主回路は、入力電圧として第１の電圧と前記第１の電圧のほぼ２倍の第２の電圧とが入力されるアーク溶接機の主回路であって、前記入力電圧を直流に整流する整流部と、第１および第２の平滑コンデンサからなる平滑部と、それぞれ二つの半導体素子を有して前記整流部により整流された直流をオンオフする第１および第２の半導体パッケージと、前記第１および第２の半導体パッケージを介して前記平滑部に接続された一次側巻線を有するとともに溶接アークが必要とする電力が取り出される二次側巻線を有するトランスと、前記第１の電圧または前記第２の電圧に応じて前記平滑部、前記第１および第２の半導体パッケージならびに前記トランスの相互間の接続を切り換える切換手段とを備え、
前記切換手段は、前記第１の電圧の場合に、前記トランスに対する前記整流部の出力側の構成を前記平滑部と前記第１および第２の半導体パッケージの全ての半導体素子とを使用するフルブリッジ構成とする接続に切り換え、
前記第２の電圧の場合に、前記トランスに対する前記整流部の出力側の構成を前記平滑部と前記第１および第２の半導体パッケージのそれぞれ一つの半導体素子とを使用するハーフブリッジ構成とする接続に切り換えることを特徴とする。なお、第１および第２の半導体パッケージ内の半導体素子としては、ＩＧＢＴやＭＯＳＦＥＴなどのパワー素子のいずれでも良い。
0011
[Means for solving problems]
The main circuit of the arc welder according to claim 1 is a main circuit of the arc welder in which a first voltage and a second voltage that is substantially twice the first voltage are input as input voltages . A first and first rectifying section that rectifies the input voltage to direct current, a smoothing section composed of first and second smoothing capacitors, and two semiconductor elements, respectively, to turn on and off the direct current rectified by the rectifying section . A transformer having two semiconductor packages and a primary winding connected to the smooth portion via the first and second semiconductor packages and a secondary winding from which the power required by the welding arc is taken out. And a switching means for switching the connection between the smoothing portion, the first and second semiconductor packages, and the transformer according to the first voltage or the second voltage.
Said switching means is a full-bridge that uses said in the case of the first voltage, all of the semiconductor elements of the structure of the output side of the rectifying portion with respect to the transformer the smoothing section and the first and second semiconductor packages Switch to the configuration connection,
In the case of the second voltage, connect to each half-bridge configuration using a single semiconductor device of the structure of the output side of the rectifying portion with respect to the transformer the smoothing section and the first and second semiconductor packages It is characterized by switching to. The semiconductor element in the first and second semiconductor packages may be any power element such as an IGBT or MOSFET.
この主回路によれば、第２の電圧を入力電圧としてハーフブリッジ構成を含む主回路を構成する際、第１および第２の二つの半導体パッケージからそれぞれ一つの半導体素子を使用することで、半導体素子の発熱が二つの半導体パッケージに分散されるため、一つの半導体パッケージにおける発熱量が約二分の一になり、半導体パッケージにおける温度上昇を低減することができる。また、トランスの大型化も防止できる。 According to this main circuit , when a main circuit including a half-bridge configuration is configured by using a second voltage as an input voltage, a semiconductor element is used by using one semiconductor element from each of the first and second semiconductor packages. Since the heat generated by the element is dispersed in the two semiconductor packages, the amount of heat generated in one semiconductor package is reduced to about half, and the temperature rise in the semiconductor package can be reduced. In addition, it is possible to prevent the transformer from becoming large.
請求項２記載のアーク溶接機の主回路は、請求項１記載のアーク溶接機の主回路において、入力電圧として第２の電圧を入力する際のハーフブリッジ構成に使用する二つの半導体素子に、入力電圧として第１の電圧を入力する際のフルブリッジ構成に使用されるときに導通・非導通のタイミングが異なる関係にある半導体素子を用いることを特徴とする。 The main circuit of the arc welder according to claim 2 is formed on two semiconductor elements used in a half bridge configuration when a second voltage is input as an input voltage in the main circuit of the arc welder according to claim 1. It is characterized in that a semiconductor element having a relationship in which the timings of conduction and non-conduction are different when used in a full bridge configuration when a first voltage is input as an input voltage is used.
この主回路により、第２の電圧を入力電圧としてハーフブリッジ構成を含む主回路を構成する際に使用される二つの半導体素子を、第１の電圧を入力電圧としてフルブリッジ構成を含む主回路を構成する際と同じように動作させればよいため、半導体素子の制御が簡単になる。 With this main circuit , two semiconductor elements used when constructing a main circuit including a half-bridge configuration with a second voltage as an input voltage, and a main circuit including a full-bridge configuration with a first voltage as an input voltage. Since the operation may be performed in the same manner as in the configuration, the control of the semiconductor element becomes easy.
請求項３記載のアーク溶接機の主回路は、請求項１または請求項２記載のアーク溶接機の主回路において、第２の電圧が第１の電圧の１．８〜２．２倍である。このような範囲にあることが好ましい。 The main circuit of an arc welding machine according to claim 3, wherein, in the main circuit of an arc welding machine according to claim 1 or claim 2 wherein the second voltage is 1.8 to 2.2 times the first voltage .. It is preferably in such a range.
図１は本発明の実施の形態におけるアーク溶接機の主回路を示すブロック図である。低い方の電圧が入力されてフルブリッジを構成する場合は図４（ａ）に示す従来の構成例と同様になるので、その図面を省略する。図１は、高い方の電圧が入力されてハーフブリッジを構成する場合のブロック図である。なお、図１において、従来の構成例と同一機能のものには同一の符号を付してその説明を省略する。 FIG. 1 is a block diagram showing a main circuit of an arc welder according to an embodiment of the present invention. When the lower voltage is input to form the full bridge, it is the same as the conventional configuration example shown in FIG. 4A, so the drawing is omitted. FIG. 1 is a block diagram when a higher voltage is input to form a half bridge. In FIG. 1, those having the same function as the conventional configuration example are designated by the same reference numerals, and the description thereof will be omitted.
前述したアーク溶接機の主回路を実現するために、本実施の形態のアーク溶接機は、切換手段１０を設け、この切換手段１０により、整流部２と、平滑コンデンサ３ａおよび平滑コンデンサ３ｂと、半導体素子４ａ１，半導体素子４ａ２，半導体素子４ｂ１および半導体素子４ｂ２と、メイントランス５とを、フルブリッジ構成の場合には例えば図４（ａ）と等価な回路となるように接続し、ハーフブリッジ構成の場合は例えば図１と等価な回路となるように接続するというように、接続を切り換えるようにしている。切換手段１０の動作は以下の通りである。 In order to realize the main circuit of the arc welder described above, the arc welder of the present embodiment is provided with a switching means 10, and the switching means 10 provides a rectifying unit 2, a smoothing capacitor 3a, and a smoothing capacitor 3b. In the case of a full bridge configuration, the semiconductor element 4a1, the semiconductor element 4a2, the semiconductor element 4b1 and the semiconductor element 4b2, and the main transformer 5 are connected so as to form a circuit equivalent to that of FIG. 4A, for example, to form a half bridge configuration. In the case of, the connection is switched, for example, by connecting so as to have a circuit equivalent to that in FIG. The operation of the switching means 10 is as follows.
【図１】
本発明の実施の形態におけるアーク溶接機の主回路を示すブロック図。
FIG. 1
The block diagram which shows the main circuit of the arc welder in embodiment of this invention.
【図４】
従来のアーク溶接機の主回路を示すブロック図。
FIG. 4
The block diagram which shows the main circuit of the conventional arc welder.
【図５】
他の従来のアーク溶接機の主回路を説明するための図。
FIG. 5
The figure for demonstrating the main circuit of another conventional arc welder.
Claims (3)
前記切換手段は、前記第１の電圧の場合に、前記トランスに対する前記整流部の出力側の構成を前記平滑部と前記第１および第２の半導体パッケージの全ての半導体素子とを使用するフルブリッジ構成とする接続に切り換え、
前記第２の電圧の場合に、前記トランスに対する前記整流部の出力側の構成を前記平滑部と前記第１および第２の半導体パッケージのそれぞれ一つの半導体素子とを使用するハーフブリッジ構成とする接続に切り換えることを特徴とするアーク溶接機の主回路。 A main circuit of an arc welder in which a first voltage and a second voltage that is approximately twice the first voltage are input as an input voltage, a rectifying unit that rectifies the input voltage to direct current, and a second voltage. A smoothing portion composed of first and second smoothing capacitors, a first and second semiconductor package having two semiconductor elements each and turning on / off the direct current rectified by the rectifying unit, and the first and second semiconductor packages . A transformer having a primary winding connected to the smooth portion via a semiconductor package and a secondary winding from which the power required by the welding arc is taken out , and the first voltage or the second voltage. The smoothing portion, the first and second semiconductor packages, and a switching means for switching the connection between the transformers are provided according to the above.
Said switching means is a full-bridge that uses said in the case of the first voltage, all of the semiconductor elements of the structure of the output side of the rectifying portion with respect to the transformer the smoothing section and the first and second semiconductor packages Switch to the configuration connection,
In the case of the second voltage, connect to each half-bridge configuration using a single semiconductor device of the structure of the output side of the rectifying portion with respect to the transformer the smoothing section and the first and second semiconductor packages The main circuit of the arc welder, which is characterized by switching to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26681899A JP4357667B2 (en) | 1999-09-21 | 1999-09-21 | Arc welder main circuit and arc welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26681899A JP4357667B2 (en) | 1999-09-21 | 1999-09-21 | Arc welder main circuit and arc welder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001087857A JP2001087857A (en) | 2001-04-03 |
| JP2001087857A5 true JP2001087857A5 (en) | 2005-08-04 |
| JP4357667B2 JP4357667B2 (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26681899A Expired - Fee Related JP4357667B2 (en) | 1999-09-21 | 1999-09-21 | Arc welder main circuit and arc welder |
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| Country | Link |
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| JP (1) | JP4357667B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100942288B1 (en) | 2008-05-27 | 2010-02-16 | 한국전기연구원 | Multi output structure of full bridge inverter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2579077B2 (en) * | 1991-06-11 | 1997-02-05 | 松下電器産業株式会社 | Inverter welding power supply |
| JP2607997B2 (en) * | 1991-10-18 | 1997-05-07 | 株式会社三社電機製作所 | Arc welding machine |
| JP2694502B2 (en) * | 1993-08-30 | 1997-12-24 | 株式会社三社電機製作所 | Power supply for arc welding |
| JPH099644A (en) * | 1995-06-21 | 1997-01-10 | Fuji Electric Co Ltd | Semiconductor device for power |
| JPH09219970A (en) * | 1996-02-13 | 1997-08-19 | Fuji Electric Co Ltd | Semiconductor power conversion equipment |
| JP4175583B2 (en) * | 1998-04-07 | 2008-11-05 | 日立ビアエンジニアリング株式会社 | AC or AC / DC arc welding power supply |
-
1999
- 1999-09-21 JP JP26681899A patent/JP4357667B2/en not_active Expired - Fee Related
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