JP3030701B1 - Harmonic reduction device - Google Patents
Harmonic reduction deviceInfo
- Publication number
- JP3030701B1 JP3030701B1 JP10354402A JP35440298A JP3030701B1 JP 3030701 B1 JP3030701 B1 JP 3030701B1 JP 10354402 A JP10354402 A JP 10354402A JP 35440298 A JP35440298 A JP 35440298A JP 3030701 B1 JP3030701 B1 JP 3030701B1
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- phase adjuster
- synchronous phase
- reduction device
- harmonic
- 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 - Fee Related
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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
【要約】
【課題】高調波の周波数に関係なく除去することがで
き、かつコンデンサを必要としない高調波低減装置を提
供すること。
【解決手段】高調波低減装置は、２巻線の同期調相機
と、この同期調相機の界磁電流を調整して同期調相機の
出力電圧を制御する自動電圧調整器と、変圧器とを備
え、変圧器の１次巻線の一端をインバータ電源に接続
し，他端を同期調相機の一端に接続し、変圧器の２次巻
線の一端を同期調相機の他端に接続し，変圧器の２次巻
線の他端を負荷に接続しているので、コンデンサを必要
としなく、かつ高調波の周波数に関係なく高調波を低減
することができる。よって、インバータ電源の電圧波形
歪みを低減して負荷に電力を供給することができる。An object of the present invention is to provide a harmonic reduction device that can remove a harmonic regardless of its frequency and does not require a capacitor. A harmonic reduction device includes a two-phase synchronous phase adjuster, an automatic voltage regulator that adjusts a field current of the synchronous phase adjuster to control an output voltage of the synchronous phase adjuster, and a transformer. One end of the primary winding of the transformer is connected to the inverter power supply, the other end is connected to one end of the synchronous phase adjuster, and one end of the secondary winding of the transformer is connected to the other end of the synchronous phase adjuster; Since the other end of the secondary winding of the transformer is connected to the load, no capacitor is required, and harmonics can be reduced regardless of the frequency of the harmonics. Therefore, power can be supplied to the load while reducing the voltage waveform distortion of the inverter power supply.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、インバータ電源装
置の出力電圧波形歪みを低減する高調波低減装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harmonic reduction device for reducing output voltage waveform distortion of an inverter power supply.
【０００２】[0002]
【従来の技術】インバータ電源装置から負荷に電力を供
給する場合、インバータの出力電圧波形にはインバータ
のスイッチング動作による高調波歪みが含まれる。機器
によってはこの高調波歪みにより誤動作等の原因とな
る。2. Description of the Related Art When power is supplied from an inverter power supply to a load, the output voltage waveform of the inverter includes harmonic distortion due to the switching operation of the inverter. Depending on the device, the harmonic distortion may cause a malfunction or the like.
【０００３】この高調波歪みの対策として、従来は図５
のようにインバータ電源１と負荷４Ａ，４Ｂ，４Ｃの間
にリアクトル１１Ａ，１１Ｂ，１１Ｃをそれぞれ線路に
直列に接続し、かつコンデンサ１０Ａ，１０Ｂ，１０Ｃ
を各線路に並列に接続した３相フィルタ１２を挿入する
か、あるいは図６のようにインバータ電源１と負荷４
Ａ，４Ｂ，４Ｃの間にリアクトル１１Ａ，１１Ｂ，１１
Ｃとコンデンサ１０Ａ，１０Ｂ，１０Ｃを直列に接続し
て３相線路に互いに並列に接続した３相フィルタ１３を
挿入することで、出力電圧波形を正弦波に近付けるよう
にしていた。Conventionally, as a countermeasure against this harmonic distortion, FIG.
, Reactors 11A, 11B and 11C are respectively connected in series between the inverter power supply 1 and loads 4A, 4B and 4C, and capacitors 10A, 10B and 10C are connected.
Of the inverter power supply 1 and the load 4 as shown in FIG.
Reactors 11A, 11B, 11 between A, 4B, 4C
By connecting the C and the capacitors 10A, 10B, and 10C in series and inserting a three-phase filter 13 connected in parallel to the three-phase line, the output voltage waveform approaches a sine wave.
【０００４】通常、高周波数の高調波成分を除去する場
合は図５に示すフィルタ１２を用いる。しかし、低周波
数の高調波は図５のフィルタ１２では除去できないた
め、図６に示すフィルタ１３を用いる。図６のフィルタ
１３は、除去の対象とする高調波の周波数がリアクトル
とコンデンサの共振周波数になるようにリアクトルとコ
ンデンサを選定し、対象の高調波を吸収するものであ
る。Usually, a filter 12 shown in FIG. 5 is used to remove high frequency harmonic components. However, since low-frequency harmonics cannot be removed by the filter 12 of FIG. 5, the filter 13 shown in FIG. 6 is used. The filter 13 in FIG. 6 selects a reactor and a capacitor so that the frequency of the harmonic to be removed becomes the resonance frequency of the reactor and the capacitor, and absorbs the target harmonic.
【０００５】[0005]
【発明が解決しようとする課題】ところで、図５のフィ
ルタ１２の場合、リアクトルのインピーダンスがあるた
め負荷電流が流れると電圧降下が起こり、負荷電流が変
動し、これにより出力電圧も変動するという問題があ
る。However, in the case of the filter 12 shown in FIG. 5, when the load current flows due to the impedance of the reactor, a voltage drop occurs, the load current fluctuates, and the output voltage fluctuates. There is.
【０００６】また、図６のフィルタ１３の場合、特定の
周波数の高調波を除去するため、電源に含まれる高調波
成分が広い周波数範囲にわたる場合は、それぞれの周波
数に対応した複数の組み合わせのリアクトルとコンデン
サが必要となり、設置スペースが大きくなるという問題
がある。さらに、このようなリアクトルとコンデンサか
らなるフィルタの場合、コンデンサの寿命があるため、
定期的にコンデンサを交換する必要がある。In the case of the filter 13 shown in FIG. 6, in order to remove harmonics of a specific frequency, when a harmonic component included in the power supply covers a wide frequency range, a plurality of combinations of reactors corresponding to the respective frequencies are used. However, there is a problem that an installation space is increased due to the necessity of a capacitor. Furthermore, in the case of such a filter composed of a reactor and a capacitor, the life of the capacitor is limited.
The capacitors need to be replaced periodically.
【０００７】本発明（請求項１及び請求項２対応）は、
上記状況に鑑みてなされたもので、その目的は高調波の
周波数に関係なく除去することができ、しかもコンデン
サを必要としない高調波低減装置を提供することにあ
る。The present invention (corresponding to claims 1 and 2) provides
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a harmonic reduction device which can remove a harmonic regardless of the frequency of the harmonic and does not require a capacitor.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項１の高調波低減装置は、２巻線の同
期調相機と、前記同期調相機の界磁電流を調整して前記
同期調相機の出力電圧を制御する自動電圧調整器と、変
圧器とを備え、前記変圧器の１次巻線の一端をインバー
タ電源に接続し、他端を前記同期調相機の一端に接続
し、前記変圧器の２次巻線の一端を前記同期調相機の他
端に接続し、前記変圧器の２次巻線の他端を負荷に接続
し、前記インバータ電源の電圧波形歪みを低減して前記
負荷に電力を供給することを特徴とする。本発明の請求
項２は、請求項１記載の高調波低減装置において、２巻
線の同期調相機の各相の２組の巻線間を絶縁したことを
特徴とする。In order to achieve the above object, a harmonic reduction device according to claim 1 of the present invention adjusts a two-phase synchronous phase shifter and a field current of the synchronous phase shifter. An automatic voltage regulator for controlling the output voltage of the synchronous phase adjuster, and a transformer, one end of a primary winding of the transformer is connected to an inverter power supply, and the other end is connected to one end of the synchronous phase adjuster. Connected, one end of a secondary winding of the transformer is connected to the other end of the synchronous phase adjuster, the other end of the secondary winding of the transformer is connected to a load, and the voltage waveform distortion of the inverter power supply is reduced. The power is supplied to the load in a reduced manner. According to a second aspect of the present invention, in the harmonic reduction device according to the first aspect, two sets of windings of each phase of the two-phase synchronous phase adjuster are insulated.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図を
参照して説明する。図１は本発明の第１実施例（請求項
１対応）である高調波低減装置をインバータ電源に適用
した回路図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram showing a first embodiment (corresponding to claim 1) of the present invention in which a harmonic reduction device is applied to an inverter power supply.
【００１０】図において、１はインバータ電源であり、
その出力電圧波形にはインバータのスイッチング動作に
よる高調波歪みが含まれる。２は２巻線の同期調相機、
３Ａ，３Ｂ，３Ｃは変圧器、４Ａ，４Ｂ，４Ｃは負荷で
あり、スター接続されている。５は自動電圧調整器であ
り、同期調相機２の界磁電流を調整して同期調相機２が
出力する電圧を制御するものである。In the drawing, reference numeral 1 denotes an inverter power supply,
The output voltage waveform includes harmonic distortion due to the switching operation of the inverter. 2 is a 2-phase synchronous phase adjuster,
3A, 3B, 3C are transformers, and 4A, 4B, 4C are loads, which are star-connected. Reference numeral 5 denotes an automatic voltage regulator which controls the voltage output from the synchronous phase adjuster 2 by adjusting the field current of the synchronous phase adjuster 2.
【００１１】図２は図１の２巻線の同期調相機２の巻線
の接続を示した接続図である。すなわち、巻線２１と巻
線２２の一端を接続し、他端をＵ１端子，Ｕ２端子とし
てＵ相を形成し巻線間の相互インダクタンスをＭ1 とす
る。同様に、巻線２３と巻線２４の一端を接続し、他端
をＶ１端子，Ｖ２端子としてＶ相を形成し巻線間の相互
インダクタンスをＭ1 とする。また巻線２５と巻線２６
の一端を接続し、他端をＷ１端子，Ｗ２端子としてＷ相
を形成し巻線間の相互インダクタンスをＭ1 とする。そ
して、これらＵ相、Ｖ相、Ｗ相はスター接続されてい
る。FIG. 2 is a connection diagram showing the connection of the windings of the two-phase synchronous phase adjuster 2 of FIG. That is, to connect one end of the winding 21 and the winding 22, the other end U1 terminal, the mutual inductance between windings to form a U-phase as U2 terminals to M 1. Similarly, to connect one end of the winding 23 and the winding 24, the other end V1 terminal, to form a V-phase as V2 terminal mutual inductance between windings and M 1. The windings 25 and 26
One end is connected to the, other end W1 terminal, the mutual inductance between windings to form a W-phase as W2 terminals to M 1. The U, V, and W phases are star-connected.
【００１２】図３は図１の高調波低減装置の１相分の等
価回路図であり、この図を参照して本発明の高調波低減
装置の原理を説明する。インバータ電源１の発生する電
圧をＶ1 ，電流をＩ1 ，同期調相機２の内部誘起電圧を
Ｅ，直軸初期過渡リアクタンスをＸd ″とする。また、
変圧器３Ａの自己インダクタンスをＬ1 ，相互インダク
タンスをＭ2 ，負荷４ＡのインピーダンスをＺ，負荷４
Ａに流れる電流をＩ2 とする。そうすると、電圧，電流
の関係は次式のように表せる。FIG. 3 is an equivalent circuit diagram for one phase of the harmonic reduction device of FIG. 1, and the principle of the harmonic reduction device of the present invention will be described with reference to FIG. The voltage generated by the inverter power supply 1 is V 1 , the current is I 1 , the internal induced voltage of the synchronous phase shifter 2 is E, and the initial transient reactance of the direct axis is X d ″.
The self-inductance of the transformer 3A is L 1 , the mutual inductance is M 2 , the impedance of the load 4A is Z, and the load 4A is Z.
The current flowing through A is defined as I 2 . Then, the relationship between the voltage and the current can be expressed by the following equation.
【００１３】 ｊω（Ｌ1 ＋Ｘd ″）Ｉ1 ＋ｊω（Ｍ1 −Ｍ2 ）Ｉ2 ＝Ｖ1 −Ｅ…(1) ｊω（Ｌ1 ＋Ｘd ″）Ｉ2 ＋ｊω（Ｍ1 −Ｍ2 ）Ｉ1 ＋ＺＩ2 ＝Ｅ…(2) ここで、Ｍ1 ＝Ｍ2 ならば、(2) 式は （ｊωＬ1 ＋ｊωＸd ″＋Ｚ）Ｉ2 ＝Ｅ となり、Ｖ1 とＩ1 に無関係にＩ2 が決まる。すなわ
ち、負荷に流れる電流Ｉ2は電源の高調波の影響を受け
ない。従って、インバータ電源１に含まれる高調波を、
周波数に関係なく除去して負荷に電力を供給することが
できる。Jω (L 1 + X d ″) I 1 + jω (M 1 −M 2 ) I 2 = V 1 −E (1) jω (L 1 + X d ″) I 2 + jω (M 1 −M 2 ) I 1 + ZI 2 = E (2) Here, if M 1 = M 2 , the equation (2) becomes (jωL 1 + jωX d ″ + Z) I 2 = E, and I 2 is independent of V 1 and I 1. That is, the current I 2 flowing through the load is not affected by the harmonics of the power supply.
The power can be supplied to the load after being removed regardless of the frequency.
【００１４】本実施例の高調波低減装置によれば、Ｍ1
とＭ2 が一致していれば高調波を完全に除去することが
できるが、完全に一致しなくても高調波を低減すること
はできる。According to the harmonic reduction device of this embodiment, M 1
And although M 2 can be completely removed harmonics If they match, it is possible to reduce harmonic without complete agreement.
【００１５】図４は本発明の第２実施例（請求項２対
応）である２巻線の同期調相機の巻線の接続を示した接
続図である。図に示すように、本実施例では、Ｕ相の巻
線２１の端子Ｕ1 と巻線２２の端子Ｕ2 、Ｖ相の巻線２
３の端子Ｖ1 と巻線２４の端子Ｖ2 、Ｗ相の巻線２５の
端子Ｗ1 と巻線２６の端子Ｗ2 は絶縁されており、巻線
２１と巻線２３と巻線２５、巻線２２と巻線２４と巻線
２６はそれぞれスター接続されている。FIG. 4 is a connection diagram showing the connection of the windings of a two-winding synchronous phase adjuster according to a second embodiment (corresponding to claim 2) of the present invention. As shown in the drawing, in the present embodiment, the terminal U 1 of the U-phase winding 21 and the terminal U 2 of the winding 22, and the V-phase winding 2
Terminal W 2 of 3 terminals V 1 and terminal V 2 of the winding 24, W-phase winding 25 of the terminals W 1 and the winding 26 is insulated, the winding 21 and the winding 23 and the winding 25, The windings 22, 24, and 26 are star-connected.
【００１６】本実施例によると、Ｕ相の端子Ｕ1 と端子
Ｕ2 、Ｖ相の端子Ｖ1 と端子Ｖ2 、Ｗ相の端子Ｗ1 と端
子Ｗ2 は絶縁されているので、インバータ電源の電圧と
負荷に供給する電圧の比を自由に設定することができ
る。According to the present embodiment, the U-phase terminal U 1 and terminal U 2 , the V-phase terminal V 1 and terminal V 2 , and the W-phase terminal W 1 and terminal W 2 are insulated. And the ratio of the voltage supplied to the load can be set freely.
【００１７】[0017]
【発明の効果】以上説明したように、本発明（請求項１
及び請求項２対応）の高調波低減装置によれば、従来の
リアクトルとコンデンサからなるフィルタと比べて、コ
ンデンサを交換する必要がなく、また、高調波の周波数
に関係なく高調波を低減することができるので、インバ
ータ電源に含まれる高調波を低減して負荷に電力を供給
することができる、という優れた効果を奏する。As described above, the present invention (Claim 1)
According to the harmonic reduction device of the present invention, it is not necessary to replace a capacitor as compared with a conventional filter including a reactor and a capacitor, and the harmonics can be reduced irrespective of the frequency of the harmonics. Therefore, there is an excellent effect that power can be supplied to the load by reducing harmonics included in the inverter power supply.
【図１】本発明の第１実施例である高調波低減装置の構
成図。FIG. 1 is a configuration diagram of a harmonic reduction device according to a first embodiment of the present invention.
【図２】図１の同期調相機の巻線の接続図。FIG. 2 is a connection diagram of windings of the synchronous phase adjuster of FIG. 1;
【図３】図１の１相分の回路図。FIG. 3 is a circuit diagram of one phase in FIG. 1;
【図４】本発明の第２実施例である同期調相機の巻線の
接続図。FIG. 4 is a connection diagram of windings of a synchronous phase adjuster according to a second embodiment of the present invention.
【図５】従来のフィルタを用いた回路図。FIG. 5 is a circuit diagram using a conventional filter.
【図６】従来の他のフィルタを用いた回路図。FIG. 6 is a circuit diagram using another conventional filter.
１…インバータ電源、２…２巻線同期調相機、３Ａ，３
Ｂ，３Ｃ…変圧器、４Ａ，４Ｂ，４Ｃ…負荷、５…自動
電圧調整器、１０Ａ，１０Ｂ，１０Ｃ…コンデンサ、１
１Ａ，１１Ｂ，１１Ｃ…リアクトル、１２，１３…フィ
ルタ、２１，２２，２３，２４，２５，２６…巻線。DESCRIPTION OF SYMBOLS 1 ... Inverter power supply, 2 ... 2-winding synchronous phase adjuster, 3A, 3
B, 3C: transformer, 4A, 4B, 4C: load, 5: automatic voltage regulator, 10A, 10B, 10C: capacitor, 1
1A, 11B, 11C ... reactor, 12, 13, ... filter, 21, 22, 23, 24, 25, 26 ... winding.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02P 5/28 - 5/405 H02P 7/36 - 7/625 H02J 3/01 H02M 1/12 H02M 7/48 Continued on the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02P 5/28-5/405 H02P 7/36-7/625 H02J 3/01 H02M 1/12 H02M 7/48
Claims (2)
の界磁電流を調整して前記同期調相機の出力電圧を制御
する自動電圧調整器と、変圧器とを備え、前記変圧器の
１次巻線の一端をインバータ電源に接続し、他端を前記
同期調相機の一端に接続し、前記変圧器の２次巻線の一
端を前記同期調相機の他端に接続し、前記変圧器の２次
巻線の他端を負荷に接続し、前記インバータ電源の電圧
波形歪みを低減して前記負荷に電力を供給することを特
徴とする高調波低減装置。1. A transformer comprising a two-phase synchronous phase adjuster, an automatic voltage regulator for adjusting a field current of the synchronous phase adjuster to control an output voltage of the synchronous phase adjuster, and a transformer. One end of a primary winding of the transformer is connected to an inverter power supply, the other end is connected to one end of the synchronous phase adjuster, and one end of a secondary winding of the transformer is connected to the other end of the synchronous phase adjuster; A harmonic reduction device, wherein the other end of the secondary winding of the transformer is connected to a load, and power is supplied to the load by reducing voltage waveform distortion of the inverter power supply.
て、２巻線の同期調相機の各相の２組の巻線間を絶縁し
たことを特徴とする高調波低減装置。2. The harmonic reduction device according to claim 1, wherein two sets of windings of each phase of the two-phase synchronous phase adjuster are insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10354402A JP3030701B1 (en) | 1998-12-14 | 1998-12-14 | Harmonic reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10354402A JP3030701B1 (en) | 1998-12-14 | 1998-12-14 | Harmonic reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3030701B1 true JP3030701B1 (en) | 2000-04-10 |
| JP2000184782A JP2000184782A (en) | 2000-06-30 |
Family
ID=18437326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10354402A Expired - Fee Related JP3030701B1 (en) | 1998-12-14 | 1998-12-14 | Harmonic reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3030701B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013236484A (en) * | 2012-05-09 | 2013-11-21 | Toshiba Mitsubishi-Electric Industrial System Corp | Output filter device |
-
1998
- 1998-12-14 JP JP10354402A patent/JP3030701B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000184782A (en) | 2000-06-30 |
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