JPH05176538A - Power source device - Google Patents
Power source deviceInfo
- Publication number
- JPH05176538A JPH05176538A JP32826191A JP32826191A JPH05176538A JP H05176538 A JPH05176538 A JP H05176538A JP 32826191 A JP32826191 A JP 32826191A JP 32826191 A JP32826191 A JP 32826191A JP H05176538 A JPH05176538 A JP H05176538A
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- Japan
- Prior art keywords
- phase
- output
- power
- power supply
- supply device
- Prior art date
- Legal status (The legal status 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 status listed.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電源装置に関し、特に２
台のトランスを用いて商用の３相交流電力を３倍周波の
単相出力とその逆相の単相出力に変換するものであり、
一般家庭あるいは工場やビル施設、さらには大型船舶等
の給電設備に適用でき、交流アーク溶接，スポット溶
接，シーム溶接等の溶接装置、またはロボット積載用の
アーク溶接やサブマージの電源、または照明器具，振動
機，電動機や電熱器等の電源として高効率が得られる電
源装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device, and more particularly to a power supply device.
It uses a single transformer to convert commercial three-phase AC power into triple-frequency single-phase output and its opposite-phase single-phase output.
It can be applied to power supply equipment such as general households or factories or building facilities, and large ships, and can be used for welding equipment such as AC arc welding, spot welding, seam welding, or arc welding or submerged power supply for robot loading, or lighting equipment, The present invention relates to a power supply device that can obtain high efficiency as a power supply for a vibrator, an electric motor, an electric heater, and the like.
【０００２】[0002]
【従来の技術】一般に家庭用の給電設備や、工場におけ
る機械装置，例えば溶接装置，照明器具，電動機，電熱
器等の電源としては、通常単相交流が使用されている。
この単相交流を得るため３相交流を単相交流に変換する
装置としては、スコット配線や３相低周波方式，インバ
ーター方式等が知られているが、これらの場合大電流に
なればなるほど３相不平衡が生じるという問題があり、
また入力電力の利用効率が悪いという問題があった。2. Description of the Related Art Generally, a single-phase alternating current is used as a power supply for household power supply equipment and machinery in factories, such as welding equipment, lighting equipment, electric motors and electric heaters.
As a device for converting the three-phase alternating current into the single-phase alternating current to obtain the single-phase alternating current, Scott wiring, a three-phase low frequency system, an inverter system and the like are known. There is a problem that phase imbalance occurs,
There is also a problem that the efficiency of using input power is poor.
【０００３】すなわち、上述のスコット配線等は、回路
構成が複雑で電源装置としては装置が大型になり、また
３相の中の１相に２倍の過大電流が流れる等、安定した
電流を取り出し難く、特に電源装置としての信頼性に問
題があった。That is, the above-mentioned Scott wiring has a complicated circuit structure, the device becomes large in size as a power supply device, and a stable current is taken out such that a double excessive current flows in one of the three phases. It was difficult, and there was a problem particularly in reliability as a power supply device.
【０００４】また、スポット溶接装置の電源として上述
の３相低周波方式が採用されているが、装置が大型かつ
高価で故障が多いという問題があった。Further, although the above-mentioned three-phase low-frequency system is adopted as a power source of the spot welding apparatus, there is a problem that the apparatus is large and expensive and there are many failures.
【０００５】また、アーク溶接装置は一般に大電流を必
要とするため、磁気漏洩方式及びリアクトル方式の２種
類の電源方式が採用されており、前者はトランスとして
磁気漏れ変圧器を用いたもの、後者はトランスの２次側
とアーク電極によって構成される放電回路に直列に可飽
和リアクトルを挿入したものである。これらはいずれも
急峻に高電圧に立上り、その後電圧が急激に降下する、
アーク溶接時における垂下特性に合致した出力特性を得
るようにしているが、これらにおいては変圧部での電磁
漏洩やリアクトルによる損失が大きいと言う問題点があ
った。Further, since an arc welding apparatus generally requires a large current, two types of power supply systems, a magnetic leakage system and a reactor system, are adopted. The former uses a magnetic leakage transformer as the transformer and the latter. Is the one in which a saturable reactor is inserted in series in the discharge circuit composed of the secondary side of the transformer and the arc electrode. All of these suddenly rise to a high voltage, and then the voltage drops sharply.
Although an output characteristic that matches the drooping characteristic at the time of arc welding is obtained, there is a problem in that the loss due to the electromagnetic leakage in the transformer and the reactor is large.
【０００６】さらに最近採用されているインバーター方
式は、交流を整流した後、周波数を照明関係では１万以
上、溶接では約数百サイクル〜１２００サイクルに上
げ、これをトランスに入れ、その出力を再び整流する方
式であり、これはトランスを小型軽量にできるが、甚だ
高価であり効率も悪くまた故障も多いものであった。そ
こで小型軽量で効率のよい電源装置が要求されていた。Further, the inverter system which has been recently adopted, after rectifying an alternating current, raises the frequency to more than 10,000 for lighting and about several hundreds to 1200 cycles for welding, puts this in a transformer, and outputs the output again. This is a rectification method, which can make the transformer small and light, but it is extremely expensive, inefficient, and has many failures. Therefore, a compact, lightweight, and efficient power supply device has been demanded.
【０００７】[0007]
【発明が解決しようとする課題】この発明はこのような
状況に鑑みてなされたもので、商用の３相交流電力を３
倍周波の単相出力とその逆相出力とに変換することがで
き、完全な３相平衡負荷状態での給電が実現可能である
電源装置を得ることを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of such a situation, and a commercial three-phase AC power
It is an object of the present invention to obtain a power supply device that can be converted into a double-frequency single-phase output and its opposite-phase output, and can realize power feeding in a complete three-phase balanced load state.
【０００８】[0008]
【課題を解決するための手段】この発明に係る電源装置
は、３相交流入力をその各相の正，負各半波の約６０度
〜１２０度部分からなる第１の単相交流に変換する第１
の電力変換部と、３相交流入力をその各相の正，負各半
波の０度〜６０度部分と１２０度〜１８０度部分とを重
畳した波形からなる第２の単相交流に変換する第２の電
力変換部とを備えたものである。SUMMARY OF THE INVENTION A power supply device according to the present invention converts a three-phase AC input into a first single-phase AC consisting of about 60 to 120 degrees of positive and negative half waves of each phase. First to do
Power converter and a three-phase AC input into a second single-phase AC having a waveform in which the positive and negative half waves of each phase are superimposed on the 0 ° to 60 ° portion and the 120 ° to 180 ° portion. And a second power conversion unit that operates.
【０００９】この発明は上記電源装置において、上記第
１及び第２の電力変換部のいずれか一方の出力端子に、
単相交流出力の位相を０〜６０度の範囲内で所定量遅延
する遅延回路を接続したものである。According to the present invention, in the above power supply device, one of the output terminals of the first and second power conversion units is provided with:
A delay circuit for delaying the phase of the single-phase AC output by a predetermined amount within the range of 0 to 60 degrees is connected.
【００１０】この発明は上記電源装置において、それぞ
れ上記第１及び第２の電力変換部の出力端子に接続さ
れ、上記第１及び第２の単相交流出力の一方を負荷に供
給する複数のスイッチ回路からなるスイッチ回路群を備
え、上記各電力変換部からの単位時間当たりの出力電力
量、及び上記スイッチ回路に接続された各負荷での電力
消費率に基づいて、上記各スイッチ回路を、上記第１及
び第２の電力変換部の単位時間当たりの出力電力量の差
が小さくなるよう切換制御するようにしたものである。According to the present invention, in the power supply device, a plurality of switches connected to the output terminals of the first and second power converters, respectively, for supplying one of the first and second single-phase AC outputs to a load. A switch circuit group including a circuit, based on the output power amount per unit time from each of the power conversion units, and the power consumption rate of each load connected to the switch circuit, each of the switch circuit, The switching control is performed so that the difference between the output power amounts of the first and second power conversion units per unit time becomes small.
【００１１】[0011]
【作用】この発明においては、３相交流入力をその各相
の正，負各半波の約６０度〜１２０度部分からなる第１
の単相交流に変換する第１の電力変換部と、３相交流入
力をその各相の正，負各半波の０度〜６０度部分と１２
０度〜１８０度部分とを重畳した波形からなる第２の単
相交流に変換する第２の電力変換部とを備えたから、商
用の３相交流電力を３倍周波の単相出力とその逆相出力
とに変換することができ、３相交流入力の全波形を利用
した３相平衡の全負荷操業ができる。According to the present invention, the first three-phase AC input is composed of the positive and negative half-wave portions of each phase of about 60 to 120 degrees.
And a first power converter for converting the single-phase alternating current into a three-phase alternating current input and a 0 ° to 60 ° portion of positive and negative half waves of each phase and 12
Since the second power conversion unit for converting into the second single-phase alternating current having the waveform in which the 0-180 degree portion is superimposed is provided, the commercial three-phase alternating-current power is output as the single-phase output of triple frequency and vice versa. It can be converted into a phase output and can perform a three-phase balanced full-load operation using all waveforms of a three-phase AC input.
【００１２】この発明においては、上記第１及び第２の
電力変換部のいずれか一方の出力端子に、単相交流出力
の位相を０〜６０度の範囲内で所定量遅延する遅延回路
を接続したので、上記第１及び第２の電力変換部の単相
交流出力を用いて２相電源を実現でき、この場合負荷で
は電磁的な波動エネルギーの移動による移動磁界や回転
磁界を発生させることができる。In the present invention, a delay circuit for delaying the phase of the single-phase AC output by a predetermined amount within the range of 0 to 60 degrees is connected to one of the output terminals of the first and second power converters. Therefore, it is possible to realize a two-phase power source by using the single-phase AC outputs of the first and second power conversion units, and in this case, a load can generate a moving magnetic field or a rotating magnetic field due to electromagnetic wave energy transfer. it can.
【００１３】この発明においては、上記第１及び第２の
電力変換部の出力端子に接続され、上記第１及び第２の
単相交流出力の一方を負荷に供給する複数のスイッチ回
路からなるスイッチ回路群を備え、上記各電力変換部か
らの単位時間当たりの出力電力量、及び上記スイッチ回
路に接続された各負荷での電力消費率に基づいて、上記
各スイッチ回路を、上記第１及び第２の電力変換部の単
位時間当たりの出力電力量の差が小さくなるよう切換制
御するようにしたので、一般家庭や工場等における電源
装置から各機器への給電を完全な３相平衡負荷状態で行
うことができ、３相不平衡を回避するために負荷量を計
算し、負荷をどの相からとるべきかを考慮するといった
煩雑な対応をとる必要がない。According to the present invention, a switch composed of a plurality of switch circuits connected to the output terminals of the first and second power converters and supplying one of the first and second single-phase AC outputs to the load. A circuit group, and based on the output power amount per unit time from each of the power conversion units and the power consumption rate of each load connected to the switch circuit, Since the switching control is performed so that the difference in the output power amount per unit time of the power conversion unit of 2 becomes small, the power supply from the power supply device to a general home or factory can be performed in a complete three-phase balanced load state. Therefore, it is not necessary to calculate the load amount in order to avoid the three-phase imbalance and take a complicated measure such as considering which phase the load should be taken from.
【００１４】[0014]
【実施例】以下、この発明の実施例を図について説明す
る。図１は本発明の一実施例による電源装置を説明する
ための回路構成図、図４(a) は３相交流入力各相の正弦
波一周期ｔ分を位相角にして６０度分づづに分割して得
られる個々のパルス状波を示す図である。図において、
１００は３相交流入力の各相、つまりＲ相，Ｓ相，Ｔ相
に接続される入力端子１，２，３を有する電源装置で、
第１及び第２の電力変換部１０１及び１０２から構成さ
れている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit configuration diagram for explaining a power supply device according to an embodiment of the present invention, and FIG. 4 (a) shows a sine wave for each phase of a three-phase AC input, where one cycle t is a phase angle and the phase angle is 60 degrees. It is a figure which shows each pulsed wave obtained by dividing. In the figure,
100 is a power supply device having input terminals 1, 2, and 3 connected to each phase of the three-phase AC input, that is, R phase, S phase, T phase,
It is composed of first and second power converters 101 and 102.
【００１５】上記第１の電力変換部１０１は３相交流入
力の供給を各相正弦波の正，負各半波のミドル部分，つ
まり約６０度〜１２０度の範囲のみ行う第１の位相制御
回路１１０と、１次側に３相の１次コイル１５１〜１５
３を、２次側に単相の２次コイル１５４を巻回した単相
鉄芯１５０ａを有し、上記３相の１次コイル１５１〜１
５３が上記第１の位相制御回路１１０を介して３相交流
入力端子１，２，３に接続された変圧部１５０とを備
え、その出力端子１０１ａから第１の単相交流（以下Ｍ
出力という）を出力するようになっている。The first power converter 101 supplies the three-phase AC input only in the middle portion of the positive and negative half waves of each phase sine wave, that is, in the range of about 60 to 120 degrees. Circuit 110 and three-phase primary coils 151 to 15 on the primary side
3 has a single-phase iron core 150a formed by winding a single-phase secondary coil 154 on the secondary side, and the three-phase primary coils 151 to 1
53 includes a transformer unit 150 connected to the three-phase AC input terminals 1, 2, and 3 via the first phase control circuit 110, and outputs from the output terminal 101a of the first single-phase AC (M
Output).
【００１６】また上記第２の電力変換部１０２は３相交
流入力の供給を各相の正，負各半波のフロント部分及び
バック部分，つまり約０度〜６０度及び１２０度〜１８
０度の範囲のみ行う第２の位相制御回路１２０と、１次
側に３相の１次コイル１６１〜１６３を、２次側に単相
の２次コイル１６４を巻回した単相鉄芯１６０ａを有
し、上記３相の１次コイル１６１〜１６３が上記第２の
位相制御回路１２０を介して入力端子１，２，３に接続
された変圧部１６０とを備え、その出力端子１０２ａか
ら第２の単相交流を出力するようになっている。この第
２の単相交流は上記第１の単相交流とは逆相の関係とな
っており、以下これをＭ′出力という。The second power converter 102 supplies the three-phase AC input to the front and back portions of the positive and negative half waves of each phase, that is, about 0 to 60 degrees and 120 to 18 degrees.
The second phase control circuit 120 that performs only the range of 0 degree and the single-phase iron core 160a in which the three-phase primary coils 161 to 163 are wound on the primary side and the single-phase secondary coil 164 is wound on the secondary side. And a transformer 160 in which the three-phase primary coils 161 to 163 are connected to the input terminals 1, 2, and 3 via the second phase control circuit 120, and the output terminals 102a to 102 It is designed to output a single-phase alternating current. The second single-phase alternating current has a reverse phase relationship with the first single-phase alternating current, and is hereinafter referred to as M'output.
【００１７】図２は上記位相制御回路１１０の詳細を示
し、図中１１０ａ〜１１０ｃはそれぞれＲ，Ｓ，Ｔ相を
オン，オフするサイリスタ、１１２は３相交流入力の各
相の正弦波の零クロス点を検出する零クロス点検出器、
１１１ａ〜１１１ｃは該零クロス点検出器１１２の出力
を受け、各相のサイリスタ１１０ａ〜１１０ｃの点弧角
を調整する位相調整器で、第１の位相制御回路１１０に
ついては、各位相調整器をそれぞれ各相の６０度〜１２
０度の範囲で上記各サイリスタを点弧するよう設定して
ある。なおここでは第１の位相制御回路１１０について
のみその詳細を示しているが、第２の位相制御回路１２
０については、それぞれ位相調整器を、各相のサイリス
タの点弧範囲が０度〜６０度かつ１２０度〜１８０度と
なるよう設定している点以外は、上記第１の位相制御回
路１１０と同一の回路構成となっている。FIG. 2 shows the details of the phase control circuit 110. In the figure, 110a to 110c are thyristors for turning on / off the R, S, and T phases, and 112 is a zero sine wave of each phase of a three-phase AC input. Zero cross point detector to detect cross points,
111a to 111c are phase adjusters that receive the output of the zero-cross point detector 112 and adjust the firing angles of the thyristors 110a to 110c of the respective phases. For the first phase control circuit 110, the phase adjusters are 60 degrees to 12 for each phase
The thyristors are set to ignite in the range of 0 degree. Although the details of only the first phase control circuit 110 are shown here, the second phase control circuit 12
Regarding 0, the phase adjuster is set to the first phase control circuit 110, except that the firing range of the thyristor of each phase is set to 0 ° to 60 ° and 120 ° to 180 °. It has the same circuit configuration.
【００１８】次に動作について説明する。上記電源装置
１００の入力端子１，２，３に印加された３相交流電力
は、第１及び第２の各電力変換部１０１及び１０２にて
それぞれ上記Ｍ出力，Ｍ′出力に変換されて、各出力端
子１０１ａ，１０２ａに出力される。Next, the operation will be described. The three-phase AC power applied to the input terminals 1, 2, and 3 of the power supply device 100 is converted into the M output and M ′ output by the first and second power converters 101 and 102, respectively, It is output to each output terminal 101a, 102a.
【００１９】すなわち上記第１の電力変換部１０１で
は、上記３相交流入力の変圧器１５０の３相の１次コイ
ル１５１〜１５３への通電は、第１の位相制御回路１１
０によって制御され、図３(a) に示すように上記各１次
コイル１５１〜１５３には、各相正弦波の正，負各半波
の位相角６０度〜１２０度の範囲（ＲについてはＲ2 と
Ｒ5 ，ＳについてはＳ1 とＳ4 ，ＴについてはＴ3 とＴ
6 ）内においてのみ通電が行われ、それ以外の時間は各
コイルは開放状態である。このようにして３相の各コイ
ル１５１〜１５３に順次通電が繰り返されると、鉄芯１
５０ａ内には３倍周波の垂下特性を持った磁束が誘導さ
れ、これにより２次コイル１５４には図３(a) に示すに
ような鋸歯状の３倍周波のＭ出力が出力される。That is, in the first power converter 101, the first phase control circuit 11 supplies the power to the three-phase primary coils 151 to 153 of the three-phase AC input transformer 150.
0, and as shown in FIG. 3 (a), each of the primary coils 151 to 153 has a phase angle range of 60 degrees to 120 degrees for each positive and negative half wave of each phase sine wave (for R, R 2 and R 5 , S for S 1 and S 4 , T for T 3 and T
Power is supplied only within 6 ), and each coil is open for the rest of the time. When the three-phase coils 151 to 153 are sequentially energized in this manner, the iron core 1
A magnetic flux having a triple frequency drooping characteristic is induced in 50a, whereby a sawtooth-shaped triple frequency M output as shown in FIG. 3A is output to the secondary coil 154.
【００２０】また上記第２の電力変換部１０２では、上
記３相交流入力の変圧器１６０の３相の１次コイル１６
１〜１６３への通電は、第２の位相制御回路１２０によ
って制御され、図３(b) に示すように上記各１次コイル
１６１〜１６３には、各相正弦波の正，負各半波の位相
角０度〜６０度の範囲及び１２０度〜１８０度の範囲
（ＲについてはＲ1 ，Ｒ3 ，Ｒ4 及びＲ6 、Ｓについて
はＳ2 ，Ｓ3 ，Ｓ5 及びＳ6 、ＴについてはＴ1 ，
Ｔ2 ，Ｔ4 及びＴ5 ）内においてのみ通電が行われ、そ
れ以外の時間は各コイルは開放状態である。このように
して３相の各コイル１６１〜１６３に順次通電が繰り返
されると、鉄芯内には図４(b) に示すように３倍周波の
垂下特性を持った磁束が誘導されてこれにより２次コイ
ル１６４には図３(b) に示すにような鋸歯状の３倍周波
のＭ′出力が出力される。In the second power converter 102, the three-phase primary coil 16 of the three-phase AC input transformer 160 is used.
The energization of Nos. 1 to 163 is controlled by the second phase control circuit 120, and as shown in FIG. 3B, each of the primary coils 161 to 163 has positive and negative half waves of each phase sine wave. Phase angle range of 0 to 60 degrees and 120 to 180 degrees (for R, R 1 , R 3 , R 4 and R 6 ; for S, S 2 , S 3 , S 5 and S 6 , T; For T 1 ,
Energization is performed only in (T 2 , T 4 and T 5 ), and the coils are open during the other time. When the three-phase coils 161 to 163 are sequentially energized in this manner, a magnetic flux having a triple frequency drooping characteristic is induced in the iron core as shown in FIG. The secondary coil 164 outputs a sawtooth-shaped triple frequency M'output as shown in FIG.
【００２１】このように本電源装置では、第１及び第２
の電力変換部よりそれぞれ逆相関係の３倍周波の単相交
流（Ｍ出力とＭ′出力）を出力することができ、３相交
流入力の全波形を利用した３相平衡の全負荷操業ができ
る。また第１及び第２の電力変換部の負荷を同一容量と
すれば、例えば一般家庭や工場等では、多数の負荷を上
記第１，第２の電力変換部について等量の電源入力とな
るように配線しておけば、３相完全平衡とできる。As described above, in this power supply device, the first and second
It is possible to output a single-phase alternating current (M output and M'output) of the triple frequency having the opposite phase relation from the power conversion unit of the above, and it is possible to operate the three-phase balanced full-load operation using all the waveforms of the three-phase AC input. it can. Further, if the loads of the first and second power conversion units have the same capacity, for example, in a general household or factory, a large number of loads are input to the first and second power conversion units in equal amounts. If the wires are connected to, three-phase perfect balance can be achieved.
【００２２】そして、これらの鋸歯状の３倍周波の各電
源出力については、以下のような効果がある。The following effects are obtained for each power output of the sawtooth-shaped triple frequency.
【００２３】(1) 上記のように２次側の各単相出力とし
ては、１次側の３相交流の３倍の周波数、すなわち６０
サイクルに対し１８０サイクルが得られるので、例えば
この出力をアーク溶接等に用いた場合、溶接速度が従来
の３相／単相変換装置を用いた場合に比べて３倍にな
る。同じ速度のときは溶接のビートが、従来のものに比
し３倍細やかになる。このように溶接の品質を向上でき
る。(1) As described above, each single-phase output on the secondary side has a frequency three times that of the three-phase alternating current on the primary side, that is, 60
Since 180 cycles can be obtained with respect to cycles, for example, when this output is used for arc welding or the like, the welding speed is tripled as compared with the case of using the conventional three-phase / single-phase converter. At the same speed, the welding beat is three times finer than the conventional one. In this way, the quality of welding can be improved.
【００２４】(2) 従来の３相／単相変換電源装置では、
得られる単相出力は正弦波であるが、本電源装置により
得られるＭ出力及びＭ′出力は急峻に高電圧に立上り、
その後所定時間後に急峻に立ち下がるため、アーク溶接
時にアークが出やすくかつ安定したアークが得られる。(2) In the conventional three-phase / single-phase conversion power supply device,
The obtained single-phase output is a sine wave, but the M output and M'output obtained by this power supply device suddenly rise to a high voltage,
After that, since it steeply falls after a predetermined time, an arc is easily generated during arc welding and a stable arc can be obtained.
【００２５】(3) また、本電源装置により得られるＭ出
力，Ｍ′出力は、正弦波の中間部分を抜き出しているの
でパワーがあり、これらの出力は大型の溶接や溶射に適
している。(3) Further, the M output and M'output obtained by this power supply device have power because the middle part of the sine wave is extracted, and these outputs are suitable for large-scale welding and thermal spraying.
【００２６】(4) また、得られる周波数が３倍となるの
で、変圧器が小型となり、重量が従来の１／３で済み、
大変小型軽量となる。また構造が簡単で小型軽量となる
ので、製造コストも大幅に低減できる。(4) Further, since the obtained frequency is tripled, the size of the transformer can be reduced and the weight can be reduced to 1/3 of the conventional one.
Very small and lightweight. In addition, since the structure is simple and the size and weight are small, the manufacturing cost can be significantly reduced.
【００２７】(5) また、従来の装置では無負荷電圧が６
０Ｖ〜１００Ｖ必要であったが、本発明では３５Ｖ〜５
５Ｖで済み、安全であるとともに取扱いも簡単で技術の
熟練を必要とせず、かつ自動化も容易である。(5) Further, in the conventional device, the no-load voltage is 6
0V to 100V was required, but 35V to 5V in the present invention.
It requires only 5V, is safe, easy to handle, does not require technical skill, and is easy to automate.
【００２８】(6) また、この電源装置を溶接に用いる場
合は、上記各電力変換部において、１つの相の交流正弦
波形の点弧角を６０度あるいは１２０度を中心に前後に
適当に調整することにより、アークの強さを大きく調整
することができる。つまり、調整範囲を従来の１次，２
次コイルの磁気結合力を調整する方法に比べて広くする
ことができ、コンピュータによる自動制御を行うことに
よって従来不可能であった領域の溶接を可能にし、かつ
溶接安定性を得ることができる。(6) When this power supply device is used for welding, the firing angle of the AC sine waveform of one phase is properly adjusted back and forth around 60 or 120 degrees in each of the power conversion sections. By doing so, the intensity of the arc can be greatly adjusted. In other words, the adjustment range is
It can be made wider than the method of adjusting the magnetic coupling force of the next coil, and by performing automatic control by a computer, welding in a region that has been impossible in the past can be made possible and welding stability can be obtained.
【００２９】(7) また、小型軽量でかつアークが安定し
ているので、これをロボットに搭載することにより大型
厚板のアーク溶接を行うことができる。すなわち、同じ
重量で従来の３倍の溶接能力を発揮できる。(7) Further, since it is small and lightweight and the arc is stable, it can be mounted on a robot to carry out arc welding of a large thick plate. That is, with the same weight, it is possible to exhibit a welding capacity three times that of conventional welding.
【００３０】(8) また、上記各出力はいずれも３相平衡
出力となっているため、従来のような３相不平衡の問題
もない。(8) Further, since all the above outputs are three-phase balanced outputs, there is no problem of three-phase unbalance as in the conventional case.
【００３１】なお、実際の給電では、上記第１の位相制
御回路での位相制御については、正弦波の正，負各半波
のミドル部分を、６５度〜１１５度の範囲とし、第２の
位相制御回路での位相制御については、正弦波の正，負
各半波のフロント部分を、５度〜６０度の範囲とし、バ
ック部分を、１２０度〜１７５度の範囲とした方が、Ｒ
1 とＳ2 、Ｔ2 とＲ3 、Ｓ3 とＴ4 、Ｒ4 とＳ5 、Ｔ5
とＲ6 、Ｓ6 とＴ1 とのダブリ現象が防止できて無難で
ある（図３(a) ，(b) 参照）。この場合３倍周波の各単
相出力波形は零点付近が少し切れた形となる。これはア
ーク発生や照明等の電源では一向に差し支えないが、可
能な限り上記切れ目が小さくなるようにする方がよい。In the actual power feeding, regarding the phase control in the first phase control circuit, the middle part of each of the positive and negative half waves of the sine wave is set to the range of 65 to 115 degrees, and the second part is set. Regarding the phase control in the phase control circuit, it is better to set the front part of each of the positive and negative half waves of the sine wave within the range of 5 to 60 degrees and the back part within the range of 120 to 175 degrees.
1 and S 2 , T 2 and R 3 , S 3 and T 4 , R 4 and S 5 , T 5
It is safe to prevent the double phenomenon between R 6 and R 6 and between S 6 and T 1 (see FIGS. 3 (a) and 3 (b)). In this case, each single-phase output waveform of triple frequency has a shape in which the vicinity of the zero point is slightly cut off. This is not a problem for a power source such as arc generation or lighting, but it is better to make the above breaks as small as possible.
【００３２】図５は本発明の第２の実施例による電源装
置の説明図であり、図において、２００は本実施例の電
源装置で、上記第２の電力変換部１０２の出力側に、上
記第２の単相交流出力（Ｍ′出力）を上記第１の単相交
流出力（Ｍ出力）に対して１／４周期分遅延させるＬＣ
遅延回路１７０を接続している点が上記実施例と異なっ
ている。FIG. 5 is an explanatory diagram of a power supply device according to a second embodiment of the present invention. In the figure, reference numeral 200 denotes the power supply device of the present embodiment, which is provided on the output side of the second power converter 102. LC for delaying the second single-phase AC output (M 'output) by 1/4 cycle with respect to the first single-phase AC output (M output)
The difference from the above embodiment is that a delay circuit 170 is connected.
【００３３】このような構成の電源装置では、第１の電
力変換部１０１から出力される単相交流出力（Ｍ出力）
と、第２の電力変換部１０２の遅延回路１７０から出力
される単相交流遅延出力（ＤＭ出力）とにより２相電源
を実現でき、この場合負荷では電磁的な波動エネルギー
の移動による移動磁界や回転磁界を発生させることがで
きる。例えば、本実施例の電源装置２００の第１の単相
交流出力（Ｍ出力）及び第２の単相交流出力（ＤＭ出
力）を用いて照明を行う場合、図６(a) に示すように複
数の蛍光灯７０ａ1 〜７０ａn を相互に並列に接続して
第１グループの蛍光灯群７０ａを、また複数の蛍光灯７
０ｂ1 〜７０ｂn を交互に並列に接続して第２グループ
の蛍光灯群７０ｂを構成し、各グループの蛍光灯が交互
に位置するよう並列に配置し、上記各グループの蛍光灯
に上記電源装置２００のＭ出力及びＤＭ出力を印加す
る。すると図６(b) に示すようにＭ出力とＤＭ出力とは
位相差があるため、第１グループと第２グループとでは
照明強度の変化が若干ずれて生ずることとなり、照明に
よる波動エネルギーが図示の矢印Ａのように移動するこ
ととなり、生物の細胞等に活性力を与える等の効果があ
る。In the power supply device having such a configuration, the single-phase AC output (M output) output from the first power conversion unit 101.
And a single-phase AC delayed output (DM output) output from the delay circuit 170 of the second power conversion unit 102, a two-phase power supply can be realized. In this case, a moving magnetic field due to electromagnetic wave energy transfer or A rotating magnetic field can be generated. For example, when lighting is performed using the first single-phase AC output (M output) and the second single-phase AC output (DM output) of the power supply device 200 of the present embodiment, as shown in FIG. a plurality of fluorescent lamps 70a 1 ～70A n first group of fluorescent lamp groups 70a are connected in parallel to each other, and a plurality of fluorescent lamps 7
0b 1 to 70b n are alternately connected in parallel to configure a second group of fluorescent lamps 70b, and the fluorescent lamps of each group are arranged in parallel so that the fluorescent lamps of each group have the above-mentioned power source. Apply the M and DM outputs of device 200. Then, since there is a phase difference between the M output and the DM output as shown in FIG. 6 (b), the change in the illumination intensity between the first group and the second group is slightly deviated, and the wave energy due to the illumination is shown in the figure. It moves as indicated by arrow A, and has an effect of giving an activating power to the cells and the like of the organism.
【００３４】図７(a) は本発明の第３の実施例による電
源装置の回路構成を示す図である。図において、３００
は本電源装置で、上記第１実施例の電源装置１００の構
成に加えて、以下の回路構成が付加されている。FIG. 7A is a diagram showing a circuit configuration of a power supply device according to a third embodiment of the present invention. In the figure, 300
Is a power supply device in which the following circuit configuration is added to the configuration of the power supply device 100 of the first embodiment.
【００３５】すなわち３０１，３０２はそれぞれ上記第
１，第２の電力変換部１０１，１０２からの単位時間当
たりの出力電力量を検出する第１，第２の出力電力検出
回路、３００ａ1 〜３００ａn はそれぞれ第１，第２の
出力電力検出回路３０１，３０２を介して上記第１及び
第２の電力変換部の出力端子１０１ａ，１０２ａに接続
され、上記第１及び第２の単相交流出力の一方を負荷に
供給するスイッチ回路で、これらのスイッチ回路３００
ａ1 〜３００ａn からスイッチ回路群３００Ａが構成さ
れている。また３００ｂ1 〜３００ｂn は上記スイッチ
回路３００ａ1 〜３００ａn に接続された各負荷３００
ｃ1 〜３００ｃn での電力消費率を検出する消費電力検
出回路で、これらの消費電力検出回路３００ｂ1 〜３０
０ｂn から消費電力検出回路群３００Ｂが構成されてい
る。That is, 301 and 302 are first and second output power detection circuits 300a 1 to 300a n for detecting the output power amount per unit time from the first and second power converters 101 and 102, respectively. Are respectively connected to the output terminals 101a and 102a of the first and second power converters via the first and second output power detection circuits 301 and 302, respectively, and are connected to the first and second single-phase AC outputs. A switch circuit that supplies one to a load. These switch circuits 300
A switch circuit group 300A is composed of a 1 to 300a n . 300b 1 to 300b n are the loads 300 connected to the switch circuits 300a 1 to 300a n.
In power detection circuit for detecting a power consumption rate in the c 1 ~300c n, these power detection circuit 300b 1 to 30
The power consumption detection circuit group 300B is composed of 0b n .
【００３６】また３１０は上記各出力電力検出回路３０
１，３０２及び消費電力検出回路３００ｂ1 〜３００ｂ
n の検出出力を受け、上記各スイッチ回路３００ａ1 〜
３００ａn を、上記第１及び第２の電力変換部１０１，
１０２からの単位時間当たりの出力電力量の差が小さく
なるよう切換制御するスイッチ制御装置である。Reference numeral 310 denotes each of the output power detection circuits 30 described above.
1, 302 and power consumption detection circuits 300b1 to 300b
receiving the n detection output of each of the switch circuits 300a 1 ~
300a n to the first and second power conversion units 101,
This is a switch control device that performs switching control so that the difference in the output power amount per unit time from 102 is reduced.
【００３７】また図７(b) は上記スイッチ回路の具体的
に回路構成を示し、図中３００はスイッチ回路で、第１
及び第２の電力変換部１０１，１０２の出力を受ける第
１及び第２の入力端子３１１，３１２と、負荷を接続す
る出力端子３１３と、第１及び第２の入力端子３１１，
３１２に接続された第１及び第２接点３２１，３２２
と、上記制御装置からの制御信号に応じて上記出力端子
３１３を上記両接点の何れかに接続するスイッチ片３３
０とから構成されている。FIG. 7 (b) shows a specific circuit configuration of the above switch circuit. In the figure, reference numeral 300 is a switch circuit.
And the first and second input terminals 311 and 312 that receive the outputs of the second and second power conversion units 101 and 102, the output terminal 313 that connects the load, and the first and second input terminals 311 and 311, respectively.
First and second contacts 321, 322 connected to 312
And a switch piece 33 for connecting the output terminal 313 to either of the contacts according to a control signal from the control device.
It is composed of 0 and.
【００３８】次に動作について説明する。上記負荷３０
０ｃ1 〜３００ｃn は、具体的には機械装置を駆動する
モータ，照明装置，加熱，発熱装置，電磁力発生装置，
アークやスポット溶接等の溶接装置などであり、また以
下の説明では、電源装置１００での動作は上記第１実施
例で説明した通りであるので省略する。このような各負
荷を、上記電源装置３００の出力端子３５０ａ1 〜３５
０ａn に接続して使用する場合、この電源装置３００で
は、常に各負荷での電力消費量が検出回路３００ｂ1 〜
３００ｂn により、また各電力変換部からの出力電力量
が検出回路３０１，３０２により計測されており、その
計測値に基づいて上記スイッチ制御回路３１０は各スイ
ッチ回路３００ａ1 〜３００ａn を切換制御する。これ
によって上記第１及び第２の電力変換部１０１及び１０
２が受け持つ負荷の容量が同程度となり、完全な３相平
衡負荷状態で各負荷への給電が行われる。Next, the operation will be described. Load 30
0c 1 to 300c n are, specifically, a motor for driving a mechanical device, a lighting device, a heating device, a heating device, an electromagnetic force generating device,
It is a welding device such as arc or spot welding. In the following description, the operation of the power supply device 100 is the same as that described in the first embodiment, and therefore the description thereof is omitted. Each such load, an output terminal 350a 1 to 35 of the power source device 300
When connected to 0a n and used, in this power supply device 300, the power consumption in each load is always the detection circuit 300b 1 ~.
300b n , and the amount of output power from each power converter is measured by the detection circuits 301 and 302, and the switch control circuit 310 controls switching of the switch circuits 300a 1 to 300a n based on the measured value. .. As a result, the first and second power conversion units 101 and 10 are provided.
The capacities of the loads handled by 2 become approximately the same, and power is supplied to each load in a complete three-phase balanced load state.
【００３９】このように本実施例では、上記第１及び第
２の電力変換部１０１，１０２の出力端子に接続され、
上記第１及び第２の単相交流出力の一方を負荷に供給す
る複数のスイッチ回路３００ａ1 〜３００ａn からなる
スイッチ回路群３００Ａを備え、上記各電力変換部から
の単位時間当たりの出力電力量、及び上記スイッチ回路
に接続された各負荷での電力消費率に基づいて、上記各
スイッチ回路３００ａ1 〜３００ａn を、上記第１及び
第２の電力変換部の単位時間当たりの出力電力量の差が
小さくなるよう切換制御するようにしたので、一般家庭
や工場等における電源装置から各機器への給電を完全な
３相平衡負荷状態で行うことができ、３相不平衡を回避
するために、負荷量を計算し、負荷をどの相からとるべ
きかを考慮するといった煩雑な対応をとる必要がない。As described above, in this embodiment, the output terminals of the first and second power conversion units 101 and 102 are connected,
With the first and second plurality supplied to one of the load of the single-phase AC output switch circuits 300a 1 switch circuit group 300A consisting ~300a n, the output power per unit time from each of the power converter , And each of the switch circuits 300a 1 to 300a n based on the power consumption rate of each load connected to the switch circuit, the output power amount per unit time of the first and second power conversion units. Since switching control is performed so that the difference becomes small, power can be supplied from the power supply device to each device in a general home or factory under a perfect three-phase balanced load condition to avoid a three-phase imbalance. It is not necessary to calculate the load amount and consider the phase from which the load should be taken.
【００４０】[0040]
【発明の効果】以上のように本発明に係る電源装置によ
れば、３相交流入力をその各相の正，負各半波の約６０
度〜１２０度部分からなる第１の単相交流に変換する第
１の電力変換部と、３相交流入力をその各相の正，負各
半波の０度〜６０度部分と１２０度〜１８０度部分とを
重畳した波形からなる第２の単相交流に変換する第２の
電力変換部とを備えたので、商用の３相交流電力を３倍
周波の単相出力とその逆相出力とに変換することがで
き、上記３相交流入力の全波形を利用した３相平衡の全
負荷操業ができる効果がある。As described above, according to the power supply device of the present invention, a three-phase AC input is applied to about 60 positive and negative half waves of each phase.
A first power conversion unit for converting into a first single-phase alternating current composed of a degree to 120 degree portion, and a 0 to 60 degree portion of positive and negative half waves of each phase of the three-phase alternating current input and a 120 degree to Since the second power conversion unit for converting into the second single-phase alternating current having a waveform in which the 180-degree portion is superimposed is provided, the commercial three-phase alternating-current power is triple-frequency single-phase output and its reverse-phase output. And can be converted into and, and there is an effect that a three-phase balanced full-load operation using all the waveforms of the three-phase AC input can be performed.
【００４１】またこの発明によれば上記電源装置におい
て、上記第１及び第２の電力変換部のいずれか一方の出
力端子に、単相交流出力の位相を０〜６０度の範囲内で
所定量遅延する遅延回路を接続したので、上記第１及び
第２の電力変換部の単相交流出力を用いて２相電源を実
現でき、この場合負荷では電磁的な波動エネルギーの移
動による移動磁界や回転磁界を発生させることができる
効果がある。According to the present invention, in the above power supply device, the phase of the single-phase AC output is output to the output terminal of either one of the first and second power conversion units by a predetermined amount within the range of 0 to 60 degrees. Since a delay circuit for delaying is connected, a two-phase power supply can be realized by using the single-phase AC outputs of the first and second power conversion units, and in this case, the load causes a moving magnetic field or rotation due to electromagnetic wave energy transfer. There is an effect that a magnetic field can be generated.
【００４２】さらにこの発明によれば上記電源装置にお
いて、上記第１及び第２の電力変換部の出力端子に接続
され、上記第１及び第２の単相交流出力の一方を負荷に
供給する複数のスイッチ回路からなるスイッチ回路群を
備え、上記各電力変換部からの単位時間当たりの出力電
力量、及び上記スイッチ回路に接続された各負荷での電
力消費率に基づいて、上記各スイッチ回路を、上記第１
及び第２の電力変換部の単位時間当たりの出力電力量の
差が小さくなるよう切換制御するようにしたので、一般
家庭や工場等における電源装置から各機器への給電を完
全な３相平衡負荷状態で行うことができ、３相不平衡を
回避するために負荷量を計算し、負荷をどの相からとる
べきかを考慮するといった煩雑な対応をとる必要がない
という効果がある。Further, according to the present invention, in the power supply device, a plurality of power supply devices are connected to the output terminals of the first and second power conversion units and supply one of the first and second single-phase AC outputs to the load. Switch circuit group consisting of the switch circuit of, each of the switch circuit based on the output power amount per unit time from the power conversion unit, and the power consumption rate of each load connected to the switch circuit , Above first
Since the switching control is performed so that the difference in the output power amount per unit time of the second power conversion unit becomes small, the power supply from the power supply device to a device such as a general home or a factory is completely three-phase balanced load. This is advantageous in that it can be performed in a state and there is no need to take complicated measures such as calculating the load amount and avoiding from which phase the load should be taken in order to avoid a three-phase imbalance.
【図１】本発明の第１の実施例による電源装置を説明す
るための回路構成図である。FIG. 1 is a circuit configuration diagram for explaining a power supply device according to a first embodiment of the present invention.
【図２】上記電源装置に用いた位相制御回路の構成を示
す図である。FIG. 2 is a diagram showing a configuration of a phase control circuit used in the power supply device.
【図３】上記電源装置の動作を説明するための図であ
る。FIG. 3 is a diagram for explaining the operation of the power supply device.
【図４】上記電源装置に入力される３相交流入力の波形
及び単相出力波形を説明するための図である。FIG. 4 is a diagram for explaining a three-phase AC input waveform and a single-phase output waveform input to the power supply device.
【図５】本発明の第２の実施例による電源装置を説明す
るための概略図である。FIG. 5 is a schematic diagram illustrating a power supply device according to a second embodiment of the present invention.
【図６】上記電源装置を用いて照明を行う場合の回路構
成の一例を示す図である。FIG. 6 is a diagram showing an example of a circuit configuration when lighting is performed using the power supply device.
【図７】本発明の第３の実施例による電源装置の回路構
成を示す図である。FIG. 7 is a diagram showing a circuit configuration of a power supply device according to a third embodiment of the present invention.
１，２，３ ３相入力端子 １００，２００，３００ 電源装置 １０１，１０２ 第１，第２の電力変換部 １１０，１２０ 第１，第２の位相制御回路 １５０，１６０ 変圧部 １７０ 遅延回路 ３００ スイッチ回路 ３００Ａ スイッチ回路群 ３００Ｂ 消費電力検出回路群 ３００ｃ1 〜３００ｃn 負荷 ３０１，３０２ 第１，第２の出力電力検出回路 ３１０ スイッチ制御回路1, 2, 3 Three-phase input terminals 100, 200, 300 Power supply device 101, 102 First and second power conversion units 110, 120 First and second phase control circuits 150, 160 Transformer unit 170 Delay circuit 300 Switch Circuit 300A Switch circuit group 300B Power consumption detection circuit group 300c 1 to 300c n Load 301, 302 First and second output power detection circuit 310 Switch control circuit
Claims (3)
波のうち約６０度〜１２０度の範囲のみ行う第１の位相
制御回路と、１次側に３相の１次コイルを、２次側に単
相の２次コイルを巻回した単相鉄芯を有し、上記３相の
１次コイルが上記第１の位相制御回路を介して３相交流
入力に接続された変圧部とから構成され、第１の単相交
流を出力する第１の電力変換部と、 ３相交流入力の供給を各相の正，負各半波のうち約０度
〜６０度の範囲及び約１２０度〜１８０度の範囲のみ行
う第２の位相制御回路と、上記変圧部と同一構成の単相
鉄芯を有し、３相の１次コイルが上記第２の位相制御回
路を介して３相交流入力に接続された変圧部とから構成
され、第２の単相交流を出力する第２の電力変換部とを
備えたことを特徴とする電源装置。1. A first phase control circuit for supplying a three-phase AC input only within a range of about 60 to 120 degrees of positive and negative half waves of each phase, and a primary of three phases on the primary side. The coil has a single-phase iron core in which a single-phase secondary coil is wound on the secondary side, and the three-phase primary coil is connected to the three-phase AC input via the first phase control circuit. A first power converter configured to output a first single-phase AC and a three-phase AC input supply within a range of about 0 to 60 degrees in each of the positive and negative half waves of each phase. And a second phase control circuit for performing only a range of about 120 to 180 degrees, and a single-phase iron core having the same configuration as the transformer section, and a three-phase primary coil via the second phase control circuit. A power supply device, comprising: a transformer connected to a three-phase AC input; and a second power converter that outputs a second single-phase AC.
子に接続され、上記第１あるいは第２の単相交流出力の
位相を０〜６０度の範囲内で所定量遅延する遅延回路を
備えたことを特徴とする電源装置。2. The power supply device according to claim 1, wherein the first or the second single-phase AC output is connected to an output terminal of either one of the first and second power conversion units, and the phase of the first or second single-phase AC output is 0. A power supply device comprising a delay circuit for delaying a predetermined amount within a range of -60 degrees.
続され、上記第１及び第２の単相交流出力の一方を負荷
に供給する複数のスイッチ回路からなるスイッチ回路群
と、 上記各電力変換部からの単位時間当たりの出力電力量を
検出する出力電力検出手段と、 上記スイッチ回路に接続された各負荷での消費電力率を
検出する消費電力検出手段と、 上記各検出手段からの検出出力を受け、上記各スイッチ
回路を、上記第１及び第２の電力変換部の単位時間当た
りの出力電力量の差が小さくなるよう切換制御するスイ
ッチ制御手段とを備えたことを特徴とする電源装置。3. The power supply device according to claim 1, wherein the power supply device is connected to output terminals of the first and second power conversion units, respectively, and supplies one of the first and second single-phase AC outputs to a load. A switch circuit group including a plurality of switch circuits, an output power detection unit that detects an output power amount per unit time from each power conversion unit, and a power consumption rate at each load connected to the switch circuit The switching control is performed so that the difference between the output power amounts per unit time of the first and second power conversion units is reduced by receiving the detection output from each of the power consumption detection units and the detection units. And a switch control means for controlling the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32826191A JP3336027B2 (en) | 1991-11-14 | 1991-11-14 | Power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32826191A JP3336027B2 (en) | 1991-11-14 | 1991-11-14 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05176538A true JPH05176538A (en) | 1993-07-13 |
| JP3336027B2 JP3336027B2 (en) | 2002-10-21 |
Family
ID=18208248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32826191A Expired - Fee Related JP3336027B2 (en) | 1991-11-14 | 1991-11-14 | Power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3336027B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4259478A1 (en) * | 2020-12-08 | 2023-10-18 | Atom Power, Inc. | Electric vehicle charging system and method |
-
1991
- 1991-11-14 JP JP32826191A patent/JP3336027B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3336027B2 (en) | 2002-10-21 |
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