JPH0161024B2 - - Google Patents
Info
- Publication number
- JPH0161024B2 JPH0161024B2 JP57029351A JP2935182A JPH0161024B2 JP H0161024 B2 JPH0161024 B2 JP H0161024B2 JP 57029351 A JP57029351 A JP 57029351A JP 2935182 A JP2935182 A JP 2935182A JP H0161024 B2 JPH0161024 B2 JP H0161024B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- power
- phase
- power supply
- same
- 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.)
- Expired
Links
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Rectifiers (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】 本発明は矩形波電源装置に関する。[Detailed description of the invention] The present invention relates to a square wave power supply device.
第１図は従来の矩形波電源装置、第２図に負荷
Ｒの両端電圧波形を示す。この装置は３相交流の
１相例えばｕ−ｖ間に整流器DB1を接続し、直流
に変換した後、正極をインダクタL1を介して発
振トランスT1の１次巻線の中点タツプに接続す
る。さらに１次巻線の端子間に共振用コンデンサ
C1を接続した後、両端子をトランジスタQ1，Q2
のコレクタに接続する。エミツタはこれを一括し
て整流器DB1の負棄側へ接続しインバータとして
構成する。残りのｖ−ｗ、ｗ−ｕ相間にも同様の
インバータを接続し、各発振トランスT1〜T3の
２次側巻線を１次側と同一極性にして直列に接続
し、出力を整流器DB4で整流する。このとき高周
波の振巾が略一定な全波整流波形が得られる。こ
れをさらにトランジスタQa，Qb、コンデンサCa，
Cbよりなる直列インバータで交流に変換するが、
トランジスタQ1〜Q6で構成されるインバータよ
りは低い発振周波数に変換すると、負荷Ｒの両端
には第２図に示されるように矩形状の電圧波形が
得られる。 FIG. 1 shows a conventional rectangular wave power supply device, and FIG. 2 shows a voltage waveform at both ends of a load R. In this device, a rectifier DB 1 is connected between one phase of a three-phase AC, for example, UV, and after converting it to DC, the positive electrode is connected to the midpoint tap of the primary winding of the oscillation transformer T 1 via an inductor L 1 . Connecting. Furthermore, a resonance capacitor is connected between the terminals of the primary winding.
After connecting C 1 , connect both terminals to transistors Q 1 and Q 2
Connect to the collector of The emitters are collectively connected to the negative side of the rectifier DB 1 to form an inverter. A similar inverter is connected between the remaining v-w and w-u phases, and the secondary windings of each oscillation transformer T1 to T3 are connected in series with the same polarity as the primary side, and the output is connected to a rectifier. Rectify with DB 4 . At this time, a full-wave rectified waveform with a substantially constant high frequency amplitude is obtained. Furthermore, transistors Q a , Q b , capacitors C a ,
It is converted to alternating current by a series inverter consisting of C b , but
When the oscillation frequency is converted to a lower oscillation frequency than that of the inverter composed of the transistors Q1 to Q6 , a rectangular voltage waveform is obtained at both ends of the load R, as shown in FIG.
このような矩形波電源装置においては３相交流
よりの入力電流歪は３相全波整流して直流を得る
ものより格段に小さくなるが、整流器DB4及びト
ランジスタQa，Qbを用いているため、順方向の
電圧効果や、スイツチングロスのため変換効率が
低下する。あるいはトランジスタQa，Qbには耐
圧の高いものが必要なため、大型、高コスト化す
るという欠点があつた。 In such a rectangular wave power supply, the input current distortion from three-phase AC is much smaller than that obtained by three-phase full-wave rectification to obtain DC, but rectifier DB 4 and transistors Q a and Q b are used. Therefore, the conversion efficiency decreases due to the forward voltage effect and switching loss. Also, since the transistors Q a and Q b need to have high breakdown voltage, they have the disadvantage of being large and expensive.
本発明は上記の欠点を改善し、３相各相にイン
バータを接続し、その出力を同周波数同位相で直
列に重畳し、振巾の包絡線が略一定な高周波出力
を得る電源装置において、位相差が180度異なる
２種の出力を半サイクル毎に切りかえて、正、負
いずれか一方の出力に一定時間そろえ、次の一定
時間には前述と逆方向の出力にそろえることによ
り矩形波状の出力を得ることを目的とするもので
ある。 The present invention improves the above-mentioned drawbacks, and provides a power supply device in which an inverter is connected to each of the three phases, and the outputs are superimposed in series at the same frequency and the same phase to obtain a high-frequency output with a substantially constant amplitude envelope. By switching two types of outputs with a 180 degree phase difference every half cycle, aligning them to either the positive or negative output for a certain period of time, and then aligning them to the output in the opposite direction for the next certain period of time, a rectangular waveform can be created. The purpose is to obtain output.
次に本発明の実施例を図面について説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第３図は本発明の電源装置を示すもので、図中
Ａで示した部分は、第１図におけるＡの部分と同
じ構成である。すなわち３相電源各相に高周波イ
ンバータを接続する。この高周波インバータは交
流入力を整流する整流器と出力トランス及びスイ
ツチング素子よりなるものである。さらに整流器
の正極側をインダクタを介して出力トランス１次
巻線の中点タツプに接続する。前記の出力トラン
ス１次巻線両端に共振コンデンサを接続し、夫々
をトランジスタのコレクタに接続する。トランジ
スタのエミツタを一括し、前記の整流器の負極側
へ接続する。 FIG. 3 shows a power supply device of the present invention, and the portion indicated by A in the figure has the same configuration as the portion A in FIG. That is, a high frequency inverter is connected to each phase of the three-phase power supply. This high frequency inverter consists of a rectifier that rectifies AC input, an output transformer, and switching elements. Furthermore, the positive side of the rectifier is connected to the midpoint tap of the primary winding of the output transformer via an inductor. Resonant capacitors are connected to both ends of the primary winding of the output transformer, and each is connected to the collector of a transistor. The emitters of the transistors are connected together to the negative electrode side of the rectifier.
前記のトランスT1，T2，T3は夫々２つの２次
巻線を有するもので、一方をａ、他方をｂで表わ
すと、ａは１次巻線と同方向、ｂは逆方向に巻回
する。すなわちａ巻線とｂ巻線とでは電圧の向き
が反対となるものである。しかして３台のインバ
ータのトランスの中、ａ巻線及びｂ巻線を夫々直
列に接続する。しかしてこの直列接続のａ巻線及
びｂ巻線の一方を共通端子７′に接続し、他方を
切換スイツチSWの切換接点４，５に接続し、該
切換スイツチの共通接点６は負荷Ｒの一端に接続
され、該負荷Ｒの他端は前記の端子７′に接続す
る。しかして前記のスイツチSWは２次側に同時
に発生している電圧のうち、一定期間正又は負の
一方の電圧のみを選択するように動作する。 The transformers T 1 , T 2 , and T 3 each have two secondary windings, one of which is represented by a and the other by b, where a is in the same direction as the primary winding and b is in the opposite direction. Wind. That is, the direction of the voltage is opposite between the a winding and the b winding. In the transformers of the three inverters, the a winding and the b winding are connected in series. One of the series-connected windings a and b of the lever is connected to the common terminal 7', and the other is connected to the changeover contacts 4 and 5 of the changeover switch SW, and the common contact 6 of the changeover switch is connected to the load R. The load R is connected to one end thereof, and the other end of the load R is connected to the terminal 7'. Therefore, the switch SW operates to select only one of the positive and negative voltages for a certain period of time among the voltages that are simultaneously generated on the secondary side.
第４図は本発明装置の動作を説明する図面でａ
は巻線ａに発生する電圧波形、ｂは巻線ｂに発生
する電圧波形、ｃは負荷に加わる電圧波形を示
す。巻線ａ，ｂの極性は全く逆であるから、180
度位相の異なる高周波電圧が同時に発生してい
る。半サイクル毎に例えば斜線で示す正側を取り
出すようにスイツチ装置Ｂを切りかえれば負荷Ｒ
には正側の電圧のみが印加される。一定時間後負
側を取り出すよう切りかえれば、今度は負側の電
圧のみが負荷Ｒに印加されるようになる。高周波
電圧の振巾は略一定であるので、このようにして
得られた低周波交流の振巾も略一定なものとして
得られる。 FIG. 4 is a drawing explaining the operation of the device of the present invention.
indicates the voltage waveform generated in the winding a, b indicates the voltage waveform generated in the winding b, and c indicates the voltage waveform applied to the load. Since the polarities of windings a and b are completely opposite, 180
High frequency voltages with different degrees and phases are generated simultaneously. For example, if switch device B is switched to take out the positive side indicated by diagonal lines every half cycle, the load R can be reduced.
Only positive voltage is applied to . If the switch is switched to take out the negative side after a certain period of time, only the negative side voltage will be applied to the load R this time. Since the amplitude of the high frequency voltage is substantially constant, the amplitude of the low frequency alternating current obtained in this manner is also obtained as substantially constant.
第５図はスイツチ装置Ｂの具体例で、リレー
RLをトランジスタQ7で駆動する。その駆動タイ
ミングチヤートを第６図に示す。イ，ロはトラン
ジスタQ7の駆動パターンを示すもので、イは正
側、ロは負側を示す。ハは出力を示すもので、矩
形波として得たい周波数の半サイクル時間t0毎に
オンオフの駆動パターンを切りかえる必要がある
が正側をとりだすオンオフパターンを逆転させた
ものを負側のオンオフパターンとすればよい。こ
のような制御回路は当該業者により容易に設計で
きるため説明は省略する。 Figure 5 is a specific example of switch device B, with a relay
Drive RL with transistor Q7 . The drive timing chart is shown in FIG. A and B show the drive pattern of transistor Q7 , where A shows the positive side and B shows the negative side. C indicates the output, and it is necessary to switch the on/off drive pattern every half cycle time t 0 of the frequency you want to obtain as a square wave, but the on/off pattern that takes out the positive side is reversed and is the negative on/off pattern. do it. Since such a control circuit can be easily designed by a person skilled in the art, a description thereof will be omitted.
第７図は本発明の他の実施例を示すもので、こ
の装置は負荷としてインバータ式放電灯点灯装置
Ｄを用いたもので、これを並列に接続することに
より多灯点灯を簡単に行うことができる。振巾が
略一定な矩形波がインバータＤに入力されるので
これを整流平滑すれば完全な直流が得られる。こ
の直流を用いて放電灯Ｌを高周波点灯すれば、商
用周波点灯に比べ発光効率が大巾に上昇するため
省電力化が図れる。また、直流送電と比較しても
電触等の問題がなく、工事も容易になるという効
果もある。 FIG. 7 shows another embodiment of the present invention. This device uses an inverter type discharge lamp lighting device D as a load, and by connecting these devices in parallel, it is possible to easily light multiple lamps. Can be done. A rectangular wave with a substantially constant amplitude is input to the inverter D, so if this is rectified and smoothed, a perfect direct current can be obtained. If the discharge lamp L is lit at high frequency using this direct current, the luminous efficiency will be greatly increased compared to commercial frequency lighting, so power saving can be achieved. Furthermore, compared to DC power transmission, there are no problems such as electrical contact, and construction work is also easier.
本発明は叙上のように構成されているので、
(イ) ３相交流側入力電流歪の少ない矩形波出力を
得ることができる。また高周波で有効なフイル
タコンデンサを矩形波出力端に挿入しリツプル
を減少させると、より完全な矩形波が得られる
のは言うまでもない。 Since the present invention is configured as described above, (a) it is possible to obtain a rectangular wave output with less distortion of the input current on the three-phase AC side. It goes without saying that a more perfect rectangular wave can be obtained by inserting a filter capacitor that is effective at high frequencies into the rectangular wave output terminal to reduce ripples.
(ロ) 整流器を用いないため、ダイオードによる電
圧降下がなくなり、出力電圧、効率が上昇す
る。(b) Since no rectifier is used, there is no voltage drop caused by diodes, increasing output voltage and efficiency.
(ハ) スイツチ素子が１個で充分であるため、スイ
ツチング損失が半分になる。(c) Since one switch element is sufficient, switching loss is halved.
(ニ) スイツチが常に負荷と直列に入るため、耐圧
が低くてよく、小型、低コスト化できる。(d) Since the switch is always connected in series with the load, the withstand voltage can be low, making it possible to reduce the size and cost.
(ホ) コンデンサ等を用いないため、小型化でき
る。(e) Since no capacitors are used, it can be made smaller.
等の効果を有する。It has the following effects.
第１図は従来の電源装置、第２図は動作説明
図、第３図は本発明の電源装置、第４図ａ，ｂ，
ｃは動作説明図、第５図はスイツチ装置の一例、
第６図は動作説明図、第７図は他の実施例を示
す。
DB1，DB2，DB3，DB4……整流器、L1〜L3…
…インダクタ、Q1〜Q7，Qa，Qb……トランジス
タ、T1，T2，T3……出力トランス、SW……切
換スイツチ、RL……リレー、Ｄ……インバータ
式放電灯点灯装置。
Fig. 1 is a conventional power supply device, Fig. 2 is an operation explanatory diagram, Fig. 3 is a power supply device of the present invention, Fig. 4 a, b,
c is an explanatory diagram of the operation, Fig. 5 is an example of a switch device,
FIG. 6 is an explanatory diagram of the operation, and FIG. 7 shows another embodiment. DB 1 , DB 2 , DB 3 , DB 4 ... Rectifier, L 1 to L 3 ...
...Inductor, Q 1 to Q 7 , Q a , Q b ... Transistor, T 1 , T 2 , T 3 ... Output transformer, SW ... Selector switch, RL ... Relay, D ... Inverter type discharge lamp lighting Device.
Claims (1)
相電源の周波数より高く、かつ同一周波数の高周
波電力に変換する変換器と、前記高周波電力変換
器の発振周波数の同期をとる制御部とを備え、前
記高周波電力を同位相で直列に重畳することによ
り、振巾が略一定な高周波出力電力を得る電源装
置において、位相が180度異なる２種の高周波出
力電力を得、高周波の半サイクル毎に同一極性と
なるよう前記２種の高周波出力電力を切りかえ、
さらに一定時間後、以前と逆極性となるよう切り
かえることにより矩形波出力電圧を得ることを特
徴とする矩形波電源装置。1 3-phase power supply and each phase or line power
A converter for converting into high-frequency power having a frequency higher than and the same as that of a phase power source, and a control unit that synchronizes the oscillation frequency of the high-frequency power converter, and superimposing the high-frequency power in series in the same phase. In a power supply device that obtains high-frequency output power with a substantially constant amplitude, two types of high-frequency output power with a phase difference of 180 degrees are obtained, and the two types of high-frequency output power are outputted so that the polarity becomes the same every half cycle of the high frequency. Switch,
Furthermore, after a certain period of time, the rectangular wave power supply device is characterized in that a rectangular wave output voltage is obtained by switching the polarity to be opposite to the previous polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57029351A JPS58148670A (en) | 1982-02-24 | 1982-02-24 | Rectangular wave power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57029351A JPS58148670A (en) | 1982-02-24 | 1982-02-24 | Rectangular wave power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58148670A JPS58148670A (en) | 1983-09-03 |
| JPH0161024B2 true JPH0161024B2 (en) | 1989-12-26 |
Family
ID=12273790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57029351A Granted JPS58148670A (en) | 1982-02-24 | 1982-02-24 | Rectangular wave power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58148670A (en) |
-
1982
- 1982-02-24 JP JP57029351A patent/JPS58148670A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58148670A (en) | 1983-09-03 |
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