JP5276146B2 - Phase control type AC voltage stabilization circuit - Google Patents
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Abstract
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本発明は一種の位相制御型交流電圧安定化回路に係り、特に、入力電源の半周内に急速多段パルス幅調整を行える交流電圧出力の回路に関する。 The present invention relates to a kind of phase control type AC voltage stabilizing circuit, and more particularly, to an AC voltage output circuit capable of rapid multi-stage pulse width adjustment within a half circumference of an input power supply.
近年、テクノロジーの急速な発展により、各種の電子測定機器及び精密設備の使用が普及してきた。これらの設備が許容する入力電源の変動には制限があり、たとえば電源電圧が過高であると電気使用設備の損壊がもたらされ、電圧過低等により使用電力不安定の問題がもたらされる。配電システム中の各フィード線はいずれも多くの顧客を有し、フィード線がヘビーデューティーとなるか或いは切り離されると、回路の電圧降下により近隣の使用電力の電圧が不安定となる。ゆえに交流電圧安定化器が重要な電源品質改善設備となる。 In recent years, with the rapid development of technology, the use of various electronic measuring instruments and precision equipment has become widespread. There is a limit to the fluctuations in the input power supply that these facilities allow. For example, if the power supply voltage is excessively high, the equipment using electricity is damaged, and the problem of unstable power consumption is caused by the excessively low voltage. Each feed line in the power distribution system has many customers, and when the feed line becomes heavy duty or disconnected, the voltage of the nearby power usage becomes unstable due to the voltage drop of the circuit. Therefore, the AC voltage stabilizer is an important power quality improvement facility.
図１を参照されたい。周知の位相制御型電圧安定化器の切換えスイッチ９３は、変圧器９の励磁側９１に設けられている。該切換えスイッチ９３はサイリスタ（ＳＣＲ或いはＴＲＩＡＣ）で構成され、その切換え導通方式は僅かに各半周内に一回電圧の大きさを調整できるだけであり、急速な電圧安定化と低調波電流汚染減少の目的を達成することはできず、且つ、設計体積が大きく比較的重いろ波設備を必要とする。
Please refer to FIG. A
本発明は一種の位相制御型交流電圧安定化回路を提供することを目的とし、それは、既存の電源電圧安定化器が、その電圧安定化過程中に、連帯発生する調波電流を電力供給システムにフィードバックすることが、電源側入力パワー因数の低減をもたらし、且つ出力電圧の供給品質を改善するために、低レベルの調波ろ波器の設計が必要であることから、ろ波設備の体積が大きく重い問題が形成される点を解決する。 An object of the present invention is to provide a kind of phase control type AC voltage stabilizing circuit, in which an existing power supply voltage stabilizer supplies a harmonic current generated jointly during the voltage stabilization process to a power supply system. Since the low-frequency harmonic filter design is required to reduce the input power factor on the power supply side and improve the output voltage supply quality, Solves the problem of large and heavy problems.
請求項１の発明は、位相制御型交流電圧安定化回路において、
入力電源を受け取る変圧器（１）と、
該変圧器（１）の出力電源を受け取り、調波を濾過除去する少なくとも一つのローパスフィルタ装置（２）と、
バッファ装置（３）であって、該変圧器（１）の電源入力側（１３）と該変圧器（１）の励磁側（１４）に接続され、二つの一方向導通経路（３１）を包含し、二つの該一方向導通経路（３１）の導通方向は互いに反対で、該一方向導通経路（３１）は少なくとも一つのコントローラブルスイッチ（３１１）及び少なくとも一つの一方向導通器（３１２）が直列接続されて構成された、上記バッファ装置（３）と、
パルス幅変調制御装置（４）であって、該変圧器（１）の励磁側（１４）の該バッファ装置（３）と電力供給システムの中性点の間に接続され、入力電源の各半周内にオンとオフを数回切り換える半導体双方向切換え導通スイッチとされる、パルス幅変調制御装置（４）と、
を包含したことを特徴とする、位相制御型交流電圧安定化回路としている。
請求項２の発明は、請求項１記載の位相制御型交流電圧安定化回路において、平滑用コイル（５）が該変圧器（１）の励磁側（１４）と該バッファ装置（３）の間に接続されて、該変圧器（１）の入力電源の電流調波及び出力電源の電圧調波を低減することを特徴とする、位相制御型交流電圧安定化回路としている。
請求項３の発明は、請求項１記載の位相制御型交流電圧安定化回路において、該変圧器（１）はセルフカップリング変圧器とされることを特徴とする、位相制御型交流電圧安定化回路としている。
請求項４の発明は、請求項１記載の位相制御型交流電圧安定化回路において、該ローパスフィルタ装置（２）はインダクタ（２１）とコンデンサ（２２）を包含し、該インダクタ（２１）は出力電源を受け取り並びに該コンデンサ（２２）により調波を除去することを特徴とする、位相制御型交流電圧安定化回路としている。
請求項５の発明は、請求項１記載の位相制御型交流電圧安定化回路において、該パルス幅変調制御装置（４）は四つの一方向導通素子（４１）と一つのコントローラブルスイッチ素子（４２）が接続されて構成する半導体二方向切換え導通スイッチとされることを特徴とする、位相制御型交流電圧安定化回路としている。
請求項６の発明は、請求項５記載の位相制御型交流電圧安定化回路において、該一方向導通素子（４１）はダイオードとされることを特徴とする、位相制御型交流電圧安定化回路としている。
請求項７の発明は、請求項１記載の位相制御型交流電圧安定化回路において、該一方向導通器（３１２）は複数のパワーダイオードが接続されて構成されたことを特徴とする、位相制御型交流電圧安定化回路としている。
The invention of
A transformer (1) for receiving input power;
At least one low-pass filter device (2) that receives the output power of the transformer (1) and filters out harmonics;
A buffer device (3), connected to the power input side (13) of the transformer (1) and the excitation side (14) of the transformer (1), including two one-way conduction paths (31) The conduction directions of the two one-way conduction paths (31) are opposite to each other, and the one-way conduction path (31) includes at least one controllable switch (311) and at least one one-way conduction element (312). The buffer device (3) configured to be connected in series;
A pulse width modulation control device (4) connected between the buffer device (3) on the excitation side (14) of the transformer (1) and the neutral point of the power supply system, A pulse width modulation control device (4), which is a semiconductor bidirectional switching conduction switch that switches between on and off several times within,
The phase control type AC voltage stabilizing circuit is characterized in that
According to a second aspect of the present invention, in the phase control type AC voltage stabilizing circuit according to the first aspect, a smoothing coil (5) is provided between the excitation side (14) of the transformer (1) and the buffer device (3). The phase control type AC voltage stabilizing circuit is characterized in that the current harmonic of the input power supply and the voltage harmonic of the output power supply of the transformer (1) are reduced.
The invention according to
According to a fourth aspect of the present invention, in the phase control type AC voltage stabilizing circuit according to the first aspect, the low-pass filter device (2) includes an inductor (21) and a capacitor (22), and the inductor (21) is an output. The phase control type AC voltage stabilizing circuit is characterized in that the power supply is received and harmonics are removed by the capacitor (22).
According to a fifth aspect of the present invention, in the phase control type AC voltage stabilizing circuit according to the first aspect, the pulse width modulation control device (4) includes four one-way conducting elements (41) and one controllable switch element (42). ) Is a semiconductor two-way switching conduction switch configured to be a phase control type AC voltage stabilizing circuit.
According to a sixth aspect of the present invention, there is provided the phase control type AC voltage stabilization circuit according to the fifth aspect, wherein the one-way conduction element (41) is a diode. Yes.
A seventh aspect of the present invention is the phase control type AC voltage stabilizing circuit according to the first aspect, wherein the one-way conductor (312) is configured by connecting a plurality of power diodes. Type AC voltage stabilization circuit.
本発明の位相制御型交流電圧安定化回路は、パルス幅変調制御方式を採用し、以下の長所を有する。
１．全体の電圧安定化設備の体積が小さく且つ重量が軽い。
２．出力電圧の過渡調節速度反応が速い。
３．出力電圧の波形歪み度が小さい。
４．電力供給システムにフィードバックされる調波電流汚染を減らす。
The phase control type AC voltage stabilization circuit of the present invention employs a pulse width modulation control system and has the following advantages.
1. The overall voltage stabilization equipment has a small volume and light weight.
2. The output voltage transient adjustment speed response is fast.
3. Output voltage waveform distortion is small.
4). Reduce harmonic current contamination fed back to the power supply system.
本発明によると、バッファ装置が変圧器の入力電源側と変圧器の励磁側に接続され、該バッファ装置は二つの一方向導通経路を具備し、該一方向導通経路の導通方向は互いに反対であり且つ一方が導通し、もう一方が切断状態とされ、変圧器の正の半周期及び負の半周期の励磁電流のフライホイール経路を提供し、該一方向導通経路は、少なくとも一つのコントローラブルスイッチと少なくとも一つの一方向導通器が直列に接続されて構成される。 According to the present invention, the buffer device is connected to the input power source side of the transformer and the excitation side of the transformer, the buffer device includes two unidirectional conduction paths, and the conduction directions of the unidirectional conduction paths are opposite to each other. And one is conducting and the other is disconnected, providing a positive and negative half-cycle excitation current flywheel path for the transformer, the one-way conduction path comprising at least one controllable path. A switch and at least one one-way conductor are connected in series.
パルス幅変調制御装置が該変圧器の励磁側のバッファ装置と電力供給システムの中性点の間に接続され、該パルス幅変調制御装置は半導体二方向切換え導通スイッチとされて、入力電源を各半周期内に切り換えて複数回導通及び切断する機能を提供する。 A pulse width modulation control device is connected between the buffer device on the excitation side of the transformer and the neutral point of the power supply system, and the pulse width modulation control device is a semiconductor two-way switching conduction switch, Provides a function of switching and conducting a plurality of times by switching within a half cycle.
動作時に入力電源はバッファ装置の一方向導通経路をとおり、並びにパルス幅変調制御装置の二方向切換えスイッチにより、各半周期内に導通と切断が数回切り換えられ、変圧器の励磁側の電圧が調整されて数段の可変の電圧とされ、並びに平滑用コイルのろ波作用により、変圧器の励磁電流波形がさらにスムーズとなり、さらに変圧器により出力側の電圧が調節され、並びにローパスフィルタ装置により出力電圧波形の歪み度が改善される。 During operation, the input power supply passes through the one-way conduction path of the buffer device, and the conduction and disconnection are switched several times within each half cycle by the two-way selector switch of the pulse width modulation control device. The voltage is adjusted to a variable voltage of several stages, and by the filtering action of the smoothing coil, the excitation current waveform of the transformer becomes smoother, the voltage on the output side is adjusted by the transformer, and the low-pass filter device The degree of distortion of the output voltage waveform is improved.
本発明は既存の交流電圧安定化設備の、電圧安定化調整反応時間が十分に迅速でなく、調波電流が電源入力側パワー因数の低減を招きうる欠点を改良する。 The present invention improves the drawbacks of existing AC voltage stabilization equipment where the voltage stabilization adjustment reaction time is not sufficiently rapid and the harmonic current can lead to a reduction in power factor on the power input side.
本発明は一種の位相制御型交流電圧安定化回路であり、バッファ装置及びパルス幅変調制御装置が入力電源に対して制御を行ない、急速電圧安定化の効果を達成し、及び出力電圧波形の歪み度を小さくし、並びにろ波設備の体積が大きく重い欠点を改善する。 The present invention is a kind of phase control type AC voltage stabilization circuit, in which a buffer device and a pulse width modulation control device control the input power supply to achieve the effect of rapid voltage stabilization and distortion of the output voltage waveform. Reduce the degree and improve the disadvantage of large and heavy filtering equipment.
本発明はバッファ装置を利用して変圧器の正の半周期と負の半周期の励磁電流のフライホイール経路を提供し、並びにパルス幅変調制御装置により励磁電流を調整して複数段の可変の電圧となし、出力電圧波形の歪み度を小さくし、且つ急速電圧安定化の目的を達成し、並びにこの目的を達成するために必要なろ波設備の体積が大きく重いという問題を改善する。 The present invention provides a flywheel path of positive and negative half-cycle excitation currents using a buffer device, and adjusts the excitation current by a pulse width modulation control unit to change the number of stages. This eliminates the voltage, reduces the distortion of the output voltage waveform, achieves the purpose of rapid voltage stabilization, and improves the problem that the volume of the filtering equipment required to achieve this purpose is large and heavy.
図２を参照されたい。本発明の位相制御型交流電圧安定化回路は、変圧器（１）、ローパスフィルタ装置（２）、バッファ装置（３）、パルス幅変調制御装置（４）及び平滑用コイル（５）を包含する。 Please refer to FIG. The phase control type AC voltage stabilization circuit of the present invention includes a transformer (1), a low-pass filter device (2), a buffer device (3), a pulse width modulation control device (4), and a smoothing coil (5). .
該変圧器（１）は入力電源を受け取り、該変圧器（１）は負荷側コイル（１１）と電源側コイル（１２）を具えた共鉄心のセルフカップリング変圧器とされる。 The transformer (1) receives an input power supply, and the transformer (1) is a self-coupling transformer having a common iron core including a load side coil (11) and a power source side coil (12).
該ローパスフィルタ装置（２）は、変圧器（１）の出力電源を受け取り、該ローパスフィルタ装置（２）は、インダクタ（２１）とコンデンサ（２２）を包含し、該インダクタ（２１）は出力電源を受け取り並びにコンデンサ（２２）により高周波調波を除去して出力する。 The low-pass filter device (2) receives the output power supply of the transformer (1), the low-pass filter device (2) includes an inductor (21) and a capacitor (22), and the inductor (21) is an output power supply. The high frequency harmonics are removed by the capacitor (22) and output.
図２及び図５に示されるように、バッファ装置（３）は、変圧器（１）の入力電源側（１３）と変圧器（１）の励磁側（１４）に接続され、該バッファ装置（３）は二つの一方向導通経路（３１）を包含し、該二つの一方向導通経路（３１）の導通方向は互いに反対であり、且つ一方が導通するともう一方は切断状態となり、変圧器（１）の正の半周期（６）と負の半周期（７）の励磁電流のフライホイール経路を提供する。該一方向導通経路（３１）は少なくとも一つのコントローラブルスイッチ（３１１）及び少なくとも一つの一方向導通器（３１２）が直列に接続されてなる。該一方向導通器（３１２）は複数のパワーダイオードが接続されて構成される（図示される）。 2 and 5, the buffer device (3) is connected to the input power supply side (13) of the transformer (1) and the excitation side (14) of the transformer (1). 3) includes two one-way conduction paths (31), the conduction directions of the two one-way conduction paths (31) are opposite to each other, and when one conducts, the other is disconnected and the transformer ( 1) provides a flywheel path of excitation current for positive half-cycle (6) and negative half-cycle (7). The one-way conduction path (31) is formed by connecting at least one controllable switch (311) and at least one one-way conduction unit (312) in series. The one-way conductor (312) is configured by connecting a plurality of power diodes (illustrated).
パルス幅変調制御装置（４）は、変圧器（１）の励磁側（１４）のバッファ装置（３）と電力供給システムの中性点（Ｎｅｕｔｒａｌ ｐｏｉｎｔ）の間に接続される。該パルス幅変調制御装置（４）は四つの一方向導通素子（４１）及び一つのコントローラブルスイッチ素子（４２）が接続されてなる半導体二方向切換え導通スイッチとされ、入力電源に、各半周期内において複数回導通と切断を切り換える機能を提供する。該一方向導通素子（４１）はダイオードとされる。 The pulse width modulation control device (4) is connected between the buffer device (3) on the excitation side (14) of the transformer (1) and the neutral point of the power supply system. The pulse width modulation control device (4) is a semiconductor two-way switching conduction switch in which four one-way conduction elements (41) and one controllable switching element (42) are connected, and each half cycle is supplied to the input power supply. The function of switching between conduction and disconnection a plurality of times is provided. The one-way conducting element (41) is a diode.
平滑用コイル（５）は、変圧器（１）の励磁側（１４）とバッファ装置（３）の間に接続され、変圧器（１）の励磁電流波形をさらにスムーズとし、並びに変圧器（１）の入力電源の電流調波及び出力電源の電圧調波を低減する。 The smoothing coil (5) is connected between the excitation side (14) of the transformer (1) and the buffer device (3), further smoothing the excitation current waveform of the transformer (1), and the transformer (1 ) Reduce the input power supply current harmonics and output power supply voltage harmonics.
図２に示されるように、本発明の動作時には、入力電源はバッファ装置（３）の一方向導通経路（３１）をとおり、パルス幅変調制御装置（４）の半導体二方向切換え導通スイッチの機能により半周期ごとに数回導通と切断が切換えられ、変圧器（１）の励磁側（１４）の電圧が調整されて複数段の可変の電圧とされ、可変電圧が平滑用コイル（５）のろ波作用を受け、変圧器（１）の励磁電流波形がさらにスムーズとされ、さらに変圧器（１）の電源側コイル（１２）と負荷側コイル（１１）の結合により、変圧器（１）の出力電圧が調節され、並びにローパスフィルタ装置（２）のインダクタ（２１）及びコンデンサ（２２）により高周波調波が除去されて後、出力される。 As shown in FIG. 2, in the operation of the present invention, the input power supply passes through the one-way conduction path (31) of the buffer device (3) and functions as a semiconductor two-way switching conduction switch of the pulse width modulation control device (4). Is switched between conduction and disconnection several times per half cycle, the voltage on the excitation side (14) of the transformer (1) is adjusted to a variable voltage of a plurality of stages, and the variable voltage is applied to the smoothing coil (5). Due to the filtering effect, the excitation current waveform of the transformer (1) is further smoothed, and further, the transformer (1) is coupled by the combination of the power supply side coil (12) and the load side coil (11). And the high frequency harmonics are removed by the inductor (21) and the capacitor (22) of the low-pass filter device (2), and then output.
上述のパルス幅変調制御装置（４）は高周波制御方式を採用し、電圧安定化調節反応時間をスピードアップし、且つ出力する電圧波形の歪み度を小さくし、並びにローパスフィルタ装置（２）の体積及び重量を減らす。 The above-described pulse width modulation control device (4) adopts a high frequency control method, speeds up the voltage stabilization adjustment reaction time, reduces the distortion of the output voltage waveform, and the volume of the low-pass filter device (2). And reduce weight.
図３、図５及び図６に示されるように、入力電源電圧は正の半周期（６）の時、一方向導通経路（３１）が提供するフライホイール経路動作シーケンスはＳ２で、並びにパルス幅変調制御装置（４）が連続して導通及び切断を数回行ない、変圧器（１）の励磁側（１４）の電圧が調整されて数段の可変の電圧とされ、こうして変圧器（１）の励磁電流を連続したスムーズなものとし、及び出力する電圧波形の歪み度を小さくする目的を達成する。該パルス幅変調制御装置（４）の電源入力の動作時のシーケンスはＳ１である。 As shown in FIGS. 3, 5 and 6, when the input power supply voltage is positive half cycle (6), the flywheel path operation sequence provided by the one-way conduction path (31) is S2, and the pulse width The modulation control device (4) continuously conducts and disconnects several times, and the voltage on the excitation side (14) of the transformer (1) is adjusted to a variable voltage in several stages, thus the transformer (1). The exciting current is continuously made smooth and the purpose of reducing the distortion of the output voltage waveform is achieved. The sequence at the time of the power input operation of the pulse width modulation control device (4) is S1.
図４、図５及び図６に示されるように、負の半周期（７）の時、一方向導通経路（３１）が提供するフライホイール経路動作シーケンスはＳ３とされ、並びに動作シーケンスがＳ１のパルス幅変調制御装置（４）の連続する数回の、導通と切断の切換えにより、変圧器（１）の励磁側（１４）の電圧が調整されて数段の可変の電圧とされ、急速調節電圧安定化の目的を達成する。 As shown in FIGS. 4, 5 and 6, during the negative half cycle (7), the flywheel path operation sequence provided by the one-way conduction path (31) is S3, and the operation sequence is S1. The voltage on the excitation side (14) of the transformer (1) is adjusted by several successive switching of the pulse width modulation control device (4) between conduction and disconnection to obtain a variable voltage of several stages, and rapid adjustment Achieve the purpose of voltage stabilization.
図７には本発明のローパスフィルタ装置（２）の別の設置構造であり、該ローパスフィルタ装置（２）は変圧器（１）の負荷側コイル（１１）にのみ接続されている。 FIG. 7 shows another installation structure of the low-pass filter device (2) of the present invention, and the low-pass filter device (2) is connected only to the load side coil (11) of the transformer (1).
１ 変圧器
１３ 電源入力側
１４ 励磁側
２ ローパスフィルタ装置
２１ インダク
２２ コンデンサ
３ バッファ装置
３１ 一方向導通経路
３１１ コントローラブルスイッチ
４ パルス幅変調制御装置
４１ 一方向導通素子
４２ コントローラブルスイッチ素子
５ 平滑用コイル
DESCRIPTION OF
Claims (7)
入力電源を受け取る変圧器（１）と、
該変圧器（１）の出力電源を受け取り、調波を濾過除去する少なくとも一つのローパスフィルタ装置（２）と、
バッファ装置（３）であって、該変圧器（１）の電源入力側（１３）と該変圧器（１）の励磁側（１４）に接続され、二つの一方向導通経路（３１）を包含し、二つの該一方向導通経路（３１）の導通方向は互いに反対で、該一方向導通経路（３１）は少なくとも一つのコントローラブルスイッチ（３１１）及び少なくとも一つの一方向導通器（３１２）が直列接続されて構成された、上記バッファ装置（３）と、
パルス幅変調制御装置（４）であって、該変圧器（１）の励磁側（１４）の該バッファ装置（３）と電力供給システムの中性点の間に接続され、入力電源の各半周内にオンとオフを数回切り換える半導体双方向切換え導通スイッチとされる、パルス幅変調制御装置（４）と、
を包含したことを特徴とする、位相制御型交流電圧安定化回路。 In the phase control type AC voltage stabilization circuit,
A transformer (1) for receiving input power;
At least one low-pass filter device (2) that receives the output power of the transformer (1) and filters out harmonics;
A buffer device (3), connected to the power input side (13) of the transformer (1) and the excitation side (14) of the transformer (1), including two one-way conduction paths (31) The conduction directions of the two one-way conduction paths (31) are opposite to each other, and the one-way conduction path (31) includes at least one controllable switch (311) and at least one one-way conduction element (312). The buffer device (3) configured to be connected in series;
A pulse width modulation control device (4) connected between the buffer device (3) on the excitation side (14) of the transformer (1) and the neutral point of the power supply system, A pulse width modulation control device (4), which is a semiconductor bidirectional switching conduction switch that switches between on and off several times within,
A phase control type AC voltage stabilizing circuit comprising:
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| JPH0242079Y2 (en) * | 1980-04-17 | 1990-11-08 | ||
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| WO2009139077A1 (en) * | 2008-05-15 | 2009-11-19 | 国立大学法人 東京工業大学 | Alternating voltage control unit |
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