JPS6216022A - Semiconductor type current compensator - Google Patents
Semiconductor type current compensatorInfo
- Publication number
- JPS6216022A JPS6216022A JP60153414A JP15341485A JPS6216022A JP S6216022 A JPS6216022 A JP S6216022A JP 60153414 A JP60153414 A JP 60153414A JP 15341485 A JP15341485 A JP 15341485A JP S6216022 A JPS6216022 A JP S6216022A
- Authority
- JP
- Japan
- Prior art keywords
- current
- compensation
- value
- compensation current
- circuit
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、電力系統のへ調波または無効電力成分を補償
するための補償電流を半導体式電流調整装置を介して供
給する半導体式電流補償装置に関するものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a semiconductor current compensator that supplies a compensation current for compensating harmonics or reactive power components of a power system via a semiconductor current regulator. It is related to.
この種の半導体式電流補償装置は公知であり、第４図に
示寸ように電力系統しに必要に応じて適当な変成比の変
圧器２を介して接続された、半導体式電流調整装置３お
よびリアクタンス装置（コンデンサｄ３よび／またはり
アクｌ−ル）４からなる主回路装置を電力回路部分とし
て備えている。電流調整装置３は、たとえばサイリスタ
からなり、パルス幅変調（ＰＷＭ）制御される。電力系
統りの電流が電流検出器１０で検出され、その検出出力
から補償対象電流検出回路１１により補償対象の高調波
または無効電力成分電流ｉ。を抽出し、主回路装置の電
流容量を考癒した波高値リミットをかけるための電流制
限回路１２を通して補償電流指令ｉ ＊を形成している
。一方、電流調整装Ｃ
置３およびリアクタンス装置４によって補償される補償
電流Ｉ。７］（電流検出器１３によって検出され、その
検出出力が前述の補償電流指令１１と突ぎ合わされ、ぞ
の偏差が零になるように制御回路１４を介して電流調整
装置３つまり補償電流が制御される。This type of semiconductor current compensator is well known, and as shown in FIG. and a main circuit device consisting of a reactance device (capacitor d3 and/or reactor) 4 as a power circuit section. The current regulating device 3 is made of, for example, a thyristor, and is controlled by pulse width modulation (PWM). A current in the power system is detected by a current detector 10, and a compensation target current detection circuit 11 generates a compensation target harmonic or reactive power component current i from the detected output. is extracted, and a compensation current command i* is formed through a current limiting circuit 12 for applying a peak value limit that considers the current capacity of the main circuit device. On the other hand, the compensation current I compensated by the current regulator C device 3 and the reactance device 4. 7] (Detected by the current detector 13, its detection output is compared with the above-mentioned compensation current command 11, and the current adjustment device 3, that is, the compensation current is controlled via the control circuit 14 so that the deviation becomes zero. be done.
第５図（ａ）、（ｂ）は補償電流検出回路１１によって
検出された系統電流中の補償対象成分電流ｉ。と、それ
が電流制限回路１２の設定レベルを超えたときの補ｔＥ
４電流指令ｉ ＊ （および実際の補償電流Ｉ。）の波
形を示したものである。FIGS. 5(a) and 5(b) show the compensation target component current i in the system current detected by the compensation current detection circuit 11. and the supplementary tE when it exceeds the set level of the current limit circuit 12.
4 shows the waveform of current command i* (and actual compensation current I).
このように第４図の装置では補償すべき電流成分が大き
くなると補償電流■。が本来の正弦波から大ぎく歪むた
め、補償対象外の高調波成分を余分に発生することにな
る。また、電流調整装置３の過負荷耐母は通電電流（補
償電流）の実効値または平均値に依存しているため、第
５図（ｂ）に破線で示すように正弦波ピーク値を考慮し
て電流制限レベルを設定した場合と、実線で示すように
台形状波のピーク値に対して電流制限レベルを設定しｌ
ζ場合とでは電流実効値ないし平均値に大きな差があり
、連続過０荷状態（電流制限回路１２で電流リミットが
か（プられる場合）でも装置を安定に運転させるために
は、後者の場合は前記の場合に対してかなり大きな装置
容量、極端な場合は矩形波を考慮した装置容量を必要と
するという不都合がある。In this way, in the device shown in FIG. 4, when the current component to be compensated becomes large, the compensation current becomes ■. is greatly distorted from the original sine wave, resulting in the generation of extra harmonic components that are not subject to compensation. In addition, since the overload resistance of the current regulator 3 depends on the effective value or average value of the energizing current (compensation current), the sine wave peak value is taken into consideration as shown by the broken line in Fig. 5(b). and when the current limit level is set to the peak value of the trapezoidal wave as shown by the solid line.
There is a large difference in the effective current value or average value between the ζ case and the latter case. This has the disadvantage that it requires a considerably larger device capacity than the above case, and in extreme cases requires a device capacity that takes square waves into consideration.
〔発明の目的］
したがって本発明の目的は、補償対像外の高調波成分を
発生することなく、また補償対象の高調波成分もしくは
無効電力成分が過負荷相当の伯を右する場合でし安定に
連続運転することの可能な電流補償装置を提供すること
にある。[Objective of the Invention] Therefore, the object of the present invention is to maintain stability without generating harmonic components outside the compensation target, and in cases where the harmonic components or reactive power components to be compensated are equivalent to overload. The object of the present invention is to provide a current compensation device that can be operated continuously.
上記目的を達成するために本発明の半導体式電流補償装
置は、電力系統に流れる負荷電流に含まれる補憤対家の
高調波または無効電力成分を検出する検出手段と、この
検出手段の検出出力の平均値または実効値を演算する第
１の演算手段と、この演算手段の演算結果が補償電流の
定格値以下のときは係数１を、また定格値を超えるとき
は前記演算結果に対する定格値の比をぞれぞれ前記検出
手段の検出出力に乗じて補償電流基準を算出する第２の
演咋手段と、前記補償電流が前記補ｔｊｉ電流基準に一
致するように前記半導体式電流調整装置を制御する制御
手段とを具備したことを特徴とするｂのである。In order to achieve the above object, the semiconductor type current compensator of the present invention includes a detection means for detecting harmonics or reactive power components of the compensating house included in the load current flowing in the power system, and a detection output of the detection means. a first calculation means for calculating the average value or effective value of the compensating current, and a coefficient of 1 when the calculation result of this calculation means is less than or equal to the rated value of the compensation current, and a coefficient of 1 for the rated value for the calculation result when it exceeds the rated value. a second decoupling means for calculating a compensation current reference by multiplying the detection output of the detection means by the respective ratios; and a semiconductor current adjustment device for adjusting the compensation current to match the compensation current reference. (b) characterized in that it is equipped with a control means for controlling.
第１図は本発明の一実施例を示すものである。 FIG. 1 shows an embodiment of the present invention.
この装置は、第４図の装置どの比較において、補償対象
電流検出回路１１と電流制限回路１２との間に、実効値
演算回路１５、係数設定回路１６、および乗算器１７を
付加的に備えているのが特徴である。実効値演算回路１
５は補償電流検出回路１１によって検出された補償対象
成分電流ｉ。の実効値コ１を例えば所定時間ごとにサン
プリングして求める。この実効値コーは、場合にょって
は平均値で置換えてもよい。このようにして求められた
実効値 ｉ を装置容量定格値■８と比較し、第３図に
示づように
１ ≦Ｉ では ｋ−１
Ｒ
ｉ ＞ｌ ではに＝ＩＲ／ ｉ。This device, in any comparison with the device shown in FIG. It is characterized by the presence of Effective value calculation circuit 1
5 is a compensation target component current i detected by the compensation current detection circuit 11. The effective value ko1 is obtained by sampling at predetermined time intervals, for example. This effective value may be replaced with an average value as the case may be. The effective value i obtained in this way is compared with the device capacity rating value ■8, and as shown in FIG.
Ｒ となるにうな係数ｋを係数設定回路１６が出力する。R The coefficient setting circuit 16 outputs the coefficient k.
第２図は係数設定回路１６の一具体例を示すものである
。実効値演算回路１５からの実効値ＩＣと定格値設定器
２２からの定格値１１を高値優先回路２０に導き、その
高値を割算回路２１の除数端子に入力すると共に、同割
亦回路２１の被除数端子には前記の定格値ＩＲを入力す
る。この構成によれば ｉ ＜ｌ、では割算回路２１
の除数Ｏん子にＩＲが入力され、ｋ−ＩＲ／ＩＲ＝１と
なる。また ｉ ＞ＩＲでは割算回路２１の除数端子の
入力が １ となり、ｋ＝ｌｌ１／ １゜が１ｑられる
。FIG. 2 shows a specific example of the coefficient setting circuit 16. The effective value IC from the effective value calculation circuit 15 and the rated value 11 from the rated value setter 22 are led to the high value priority circuit 20, and the high value is input to the divisor terminal of the dividing circuit 21. The above-mentioned rated value IR is input to the dividend terminal. According to this configuration, if i <l, then the division circuit 21
IR is input to the divisor On, and k-IR/IR=1. Further, when i > IR, the input to the divisor terminal of the divider circuit 21 becomes 1, and k=ll1/1° is reduced to 1q.
このようにして得られた係数には、実効値］−を横軸に
して図示寸れば第３図のようになＣ
る。この係数ｋを乗算器１７で補償電流検出回路１１で
得られた補償電流ｉ。に乗算し、その積として得られた
装置容量に見合った修正補償電流ｉｏ′を電流制限回路
１２に通して、補償電流ｉ に含まれる過渡的瞬時過大
電流を制限するために波１３値抑制を行なう。この結果
得られた補償電流指令１１に基づいて装置出力電流Ｊな
わち装置から供給される補償電流■。を、制御回路１４
を介して電流調整装置３により制御する。The coefficients obtained in this way are sized as shown in FIG. 3, with the effective value - being taken as the horizontal axis. This coefficient k is multiplied by a multiplier 17 to obtain a compensation current i obtained by the compensation current detection circuit 11. The corrected compensation current io' corresponding to the device capacity obtained as the product is passed through the current limiting circuit 12, and wave 13 value suppression is performed to limit the transient instantaneous excessive current included in the compensation current i. Let's do it. Based on the compensation current command 11 obtained as a result, the device output current J, that is, the compensation current ■ supplied from the device. , the control circuit 14
It is controlled by the current regulating device 3 via.
（発明の効果）
以上述べた本発明によれば、系統に含まれる補償対象の
高調波または無効電力成分を、装置にとって過負荷の場
合にも補償対象の電流と相似波形でもって、しかも装買
容量をフルに活用した状態で安定に補償することができ
る。(Effects of the Invention) According to the present invention described above, harmonics or reactive power components to be compensated included in the system can be generated with a waveform similar to the current to be compensated even when the device is overloaded, and in addition, even if the device is overloaded. It is possible to stably compensate while making full use of the capacity.
第１図は本発明の一実施例を示すブロック図、第２図は
第１図における係数設定回路の一具体例を示すブロック
図、第３図は第１図における係数設定回路の特性を示す
線図、第４図は従来の半導体式電流補償装置のブロック
図、第５図（ａ）、＜ｂ＞は第４図における電流制限回
路の入力Ｊ３よび出力の例を示す波形図である。
し・・・電力系統、３・・・電流調整装置、４・・・リ
アクタンス装置、１０．１３・・・電流検出器、１１・
・・補償対象電流検出回路、１４・・・制御回路、１５
・・・実効値演算回路、１６・・・係数設定回路、１７
・・・乗算器。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a specific example of the coefficient setting circuit in FIG. 1, and FIG. 3 shows the characteristics of the coefficient setting circuit in FIG. 1. FIG. 4 is a block diagram of a conventional semiconductor current compensator, and FIGS. 5(a) and 5(b) are waveform diagrams showing examples of the input J3 and output of the current limiting circuit in FIG. 4. ...Power system, 3. Current adjustment device, 4. Reactance device, 10.13. Current detector, 11.
...Compensated current detection circuit, 14...Control circuit, 15
... Effective value calculation circuit, 16 ... Coefficient setting circuit, 17
...multiplier.
Claims (1)
補償電流を半導体式電流調整装置を介して供給する半導
体式電流補償装置において、前記電力系統に流れる負荷
電流に含まれる補償対象の高調波または無効電力成分を
検出する検出手段と、この検出手段の検出出力の平均値
または実効値を演算する第１の演算手段と、この演算手
段の演算結果が前記補償電流の定格値以下のときは係数
１を、また定格値を超えるときは前記演算結果に対する
定格値の比をぞれぞれ前記検出手段の検出出力に乗じて
補償電流基準を算出する第２の演算手段と、前記補償電
流が前記補償電流基準に一致するように前記半導体式電
流調整装置を制御する制御手段とを具備したことを特徴
とする半導体式電流補償装置。In a semiconductor current compensator that supplies a compensation current for compensating harmonics or reactive power components of a power system via a semiconductor current regulator, harmonics to be compensated for or contained in a load current flowing through the power system a detection means for detecting a reactive power component; a first calculation means for calculating the average value or effective value of the detection output of the detection means; and a coefficient when the calculation result of the calculation means is less than or equal to the rated value of the compensation current. 1, and when the compensation current exceeds the rated value, the detection output of the detection means is multiplied by the ratio of the rated value to the calculation result to calculate a compensation current reference; 1. A semiconductor current compensator comprising: control means for controlling the semiconductor current regulator so as to match a compensation current reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60153414A JPS6216022A (en) | 1985-07-12 | 1985-07-12 | Semiconductor type current compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60153414A JPS6216022A (en) | 1985-07-12 | 1985-07-12 | Semiconductor type current compensator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6216022A true JPS6216022A (en) | 1987-01-24 |
| JPH0432621B2 JPH0432621B2 (en) | 1992-05-29 |
Family
ID=15561969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60153414A Granted JPS6216022A (en) | 1985-07-12 | 1985-07-12 | Semiconductor type current compensator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6216022A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63277426A (en) * | 1987-05-07 | 1988-11-15 | Sanken Electric Co Ltd | Harmonic current suppressing circuit |
| JPS647628A (en) * | 1987-06-30 | 1989-01-11 | Hitachi Ltd | Semiconductor device and manufacture thereof |
| JPH02129142U (en) * | 1989-03-31 | 1990-10-24 | ||
| JPH03103031A (en) * | 1989-09-16 | 1991-04-30 | Meidensha Corp | Power supply active filter |
| JP2006198048A (en) * | 2005-01-19 | 2006-08-03 | Sanyo Electric Co Ltd | Motor-driven golf cart |
| US9402336B2 (en) | 2012-04-10 | 2016-07-26 | Ntn Corporation | Cooling structure for inverter device |
-
1985
- 1985-07-12 JP JP60153414A patent/JPS6216022A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63277426A (en) * | 1987-05-07 | 1988-11-15 | Sanken Electric Co Ltd | Harmonic current suppressing circuit |
| JP2519924B2 (en) * | 1987-05-07 | 1996-07-31 | サンケン電気株式会社 | Harmonic current suppression circuit |
| JPS647628A (en) * | 1987-06-30 | 1989-01-11 | Hitachi Ltd | Semiconductor device and manufacture thereof |
| JPH02129142U (en) * | 1989-03-31 | 1990-10-24 | ||
| JPH03103031A (en) * | 1989-09-16 | 1991-04-30 | Meidensha Corp | Power supply active filter |
| JP2006198048A (en) * | 2005-01-19 | 2006-08-03 | Sanyo Electric Co Ltd | Motor-driven golf cart |
| US9402336B2 (en) | 2012-04-10 | 2016-07-26 | Ntn Corporation | Cooling structure for inverter device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0432621B2 (en) | 1992-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8810182B2 (en) | Adaptive harmonic reduction apparatus and methods | |
| US5132606A (en) | Method and apparatus for controlling the input impedance of a power converter | |
| US6472775B1 (en) | Method and system for eliminating certain harmonics in a distributed power system | |
| US8483885B2 (en) | System stabilizing device | |
| US8560136B2 (en) | System stabilizing device | |
| US5140514A (en) | Regulation of d.c. voltage of a pulse-width modulated rectifier using spatial vectors in a stationary coodinate system | |
| US4234842A (en) | Voltage regulator and flicker compensator | |
| JP3130694B2 (en) | Voltage fluctuation and harmonic suppression device | |
| JPS6216022A (en) | Semiconductor type current compensator | |
| US8457804B2 (en) | System stabilizing device | |
| JPH0746834A (en) | Power supply | |
| JPH0698469A (en) | Control system of voltage detection-type reactive-power compensation apparatus | |
| JP2000276243A (en) | Controller for semiconductor switch | |
| JP2781602B2 (en) | Power converter control device and system thereof | |
| JP3215480B2 (en) | Pulse width modulation inverter device | |
| JP3306334B2 (en) | Current compensator | |
| JPH0744841B2 (en) | Power converter control circuit | |
| JPH03103031A (en) | Power supply active filter | |
| JP2607337Y2 (en) | Output limiter circuit of power conversion circuit | |
| JP2581459Y2 (en) | Control method of voltage fluctuation suppression device | |
| JP2606946Y2 (en) | Control device for voltage fluctuation suppression device | |
| CN116545034A (en) | Grid-connected current balance control method for inversion system with linear symmetrical load | |
| JPH0923585A (en) | Control of reactive power compensation | |
| CN117353364A (en) | Correction power factor control system without input sensor | |
| JPS6148724B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |