JPS63249426A - Harmonic filter - Google Patents
Harmonic filterInfo
- Publication number
- JPS63249426A JPS63249426A JP62082003A JP8200387A JPS63249426A JP S63249426 A JPS63249426 A JP S63249426A JP 62082003 A JP62082003 A JP 62082003A JP 8200387 A JP8200387 A JP 8200387A JP S63249426 A JPS63249426 A JP S63249426A
- Authority
- JP
- Japan
- Prior art keywords
- harmonic
- filter
- harmonics
- operated
- order
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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
Landscapes
- Supply And Distribution Of Alternating Current (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】
［産業上の利用分野］
この発明は、インバータ装置等のサイリスタ応用機器で
発生する高調波の流出を防止するために用いられる電力
用コンデンサからなる高調波フィルターに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a harmonic filter made of a power capacitor used to prevent outflow of harmonics generated in thyristor-applied equipment such as inverter devices.
［従来の技術］
第２図は、誘導炉１を加熱する誘導加熱装置２にインバ
ータ装置３を適用した例を示していて、４はインバータ
用変圧器であり、５は主開閉器である。更に、前記主開
閉器５の電源側には、インバータ装置３の運転１こよる
力率低下を改善するとともに、インバータ装置３で発生
する高調波を吸収して外部に流出しないように、高調波
フィルタ一群Ｆ′が開閉器６を介して接続されている。[Prior Art] FIG. 2 shows an example in which an inverter device 3 is applied to an induction heating device 2 that heats an induction furnace 1, where 4 is an inverter transformer and 5 is a main switch. Further, on the power supply side of the main switch 5, harmonics are installed to improve the power factor drop caused by the operation of the inverter device 3, and to absorb harmonics generated in the inverter device 3 and prevent them from flowing outside. A group of filters F' is connected via a switch 6.
発生する高調波の内、第３次高調波は、変圧器の巻線で
吸収されることがら、この高調波フィルタ一群Ｆ゛は、
第５次、７次、９次・・・の各高調波次数に対応して、
リアクトルＬ゛及びコンデンサＣ゛の直列共振回路とし
た高調波フィルター Ｆ Ｓ ’ ｌ Ｆ ？ ’ Ｉ
Ｆ、゛・・・からｊ＋’Ｑ成されていて、各コンデンサ
Ｃ５゛。Among the harmonics generated, the third harmonic is absorbed by the transformer winding, so the harmonic filter group F' is as follows:
Corresponding to each harmonic order of 5th, 7th, 9th...
A harmonic filter F S ' l F ? with a series resonant circuit of reactor L' and capacitor C'. 'I
J+'Q is formed from F, ゛..., and each capacitor C5゛.
Ｃ，’、Ｃ，’・・・の総容量Ｃｎ ’は、インバータ
装置３で必要とする遅相電力を供給するに必要な値に設
定されている。The total capacity Cn' of C,', C,', . . . is set to a value necessary to supply the lagging power required by the inverter device 3.
［発明が解決しようとする問題点１
このような高調波フィルタ一群Ｆ゛は、高調波を発生す
る装置毎に設置する必要があるため高価となる。そこで
複数台の装置に相当する進相容量を有する高調波フィル
タ一群Ｆ゛を一括して取り付ける方法が考えられるが、
この場合、一部の装置を休止して部分的に運転したとき
には、システム全体で進み力率となってしまい、電源側
の電圧が」二外したりして、電圧系統に悪影響を及ぼす
という問題が生じた。[Problem to be Solved by the Invention 1] Such a group of harmonic filters F' is expensive because it needs to be installed for each device that generates harmonics. Therefore, a method of installing a group of harmonic filters F' having a phase advance capacity equivalent to that of multiple devices at once may be considered.
In this case, when some equipment is stopped and partially operated, the entire system will have a leading power factor, causing the voltage on the power supply side to drop by 2,000 yen, which will adversely affect the voltage system. occured.
この発明は、経済的な設計とし、かつ、１氏負荷の場合
でも進方率とならない高調波フィルターを提供すること
を目的とする。It is an object of the present invention to provide a harmonic filter which has an economical design and which does not exhibit a forward rate even under a 1°C load.
Ｌ問題点を解決するための手段］
この発明の高調波フィルターは、インバータ等の装置の
電源側に接続して用い、該装置で発生する高調波を吸収
できるよう、高調波の各次数毎にリアクトル及びコンデ
ンサからなるフィルターを備えるととらに、該装置で必
要とする遅相電力を供給できるよう、該コンデンサの総
容量を設定した高調波フィルターにおいて、上記装７６
を複数台同時運転したときに必要となる遅相電力を供給
できるよう、上記コンデンサの総容量を設定するととも
に、高調波の各次数毎に設けた上記フィルターを個別に
開閉する開閉装置を設け、前記複数台の装置を部分的に
運転するときには、該開閉装置を所定の手順に従って開
閉することを特徴とする。[Means for Solving the L Problem] The harmonic filter of the present invention is used by being connected to the power supply side of a device such as an inverter, and is used to absorb harmonics generated by the device. In a harmonic filter that is equipped with a filter consisting of a reactor and a capacitor, and in which the total capacity of the capacitor is set so as to supply the slow-phase power required by the device, the above-mentioned device 76 is provided.
In order to supply the slow phase power required when multiple units are operated simultaneously, the total capacitance of the capacitors is set, and a switching device is installed to individually open and close the filters provided for each harmonic order. When partially operating the plurality of devices, the opening/closing device is opened and closed according to a predetermined procedure.
［作用１
上記構成によれば、複数のインバータ等の装置を同時運
転する場合には、上記開閉器をすべて閑にしてすべての
フィルターを投入するが、部分的に装置を運転する場合
には、高調波の総合流出量が許容値を超えないよう、か
つ、進方率とならないように前記開閉器を所定の手順に
従って開閉する。[Operation 1] According to the above configuration, when operating multiple devices such as inverters simultaneously, all the switches are turned off and all filters are turned on, but when partially operating the devices, The switch is opened and closed according to a predetermined procedure so that the total outflow amount of harmonics does not exceed a permissible value and the forwarding rate does not become too high.
［実施例１
第１図は、この発明の高調波フィルターの１実施例を示
していて、ここでは、２基のインバータ装置３に一括し
て取り付けた例を示している。尚、第２図の従来例と同
一の部分には同一の符号を付している。[Embodiment 1] FIG. 1 shows an embodiment of the harmonic filter of the present invention, and here, an example is shown in which the harmonic filter is attached to two inverter devices 3 at once. Note that the same parts as in the conventional example shown in FIG. 2 are given the same reference numerals.
高調波フィルタ一群Ｆは、第５次、７次、９次・・・の
高調波の各次数に対応してフィルターＦ 、ｆ Ｆ ？
ＩＦ、・・・が設けられ、かつ、フィルターＦ５．Ｆ
、を除くフィルターＦ ９１ Ｆ ｌ ｌ・・・と主開
閉器６との間にはそれぞれ個別の区分開閉器Ｓ ９ ｔ
Ｓ １１・・・が設けられる。２基のインバータ装置
３のそれぞれの容量が第２図におけるインバータ装置３
と同じとすれば、各コンデンサＣ、Ｉ Ｃ？ Ｉ Ｃ！
１ Ｃ１１・・・の総容量Ｃｎは、第２図のフィルタ
一群Ｆのコンデンサ総容量Ｃｏ ’の２倍となる。The harmonic filter group F includes filters F , f F ? corresponding to each harmonic order of the 5th, 7th, 9th, etc.
IF, . . . are provided, and filters F5. F
, an individual section switch S 9 t is provided between the filter F 91 F l l... and the main switch 6, excluding the filters F 91 F l l...
S11... is provided. The capacity of each of the two inverter devices 3 is the inverter device 3 in FIG.
If it is the same, each capacitor C, I C? IC!
1 C11... is twice the capacitor total capacitance Co' of the filter group F in FIG.
下表は、インバータ装置３を２基あるいは１基のみ運転
するときの上記高調波フィルターの運転方法をまとめた
ちのであり、以下この表に従って説明する。The table below summarizes the method of operating the harmonic filter when two or only one inverter device 3 is operated, and the following description will be made according to this table.
（＋）変圧器３が共にデルタ（△）／デルタ結線のとき
。(+) When both transformers 3 are in delta (△)/delta connection.
インバータ装置３を２基同時に運転すれば、そのとき発
生する高調波は、ｔｊ’、 ５．７ 、１１ 、１３．
１７．１９，２３．２５次・・・にわたっていて、その
発生レベルは、一般に次数に反比例して減少する。If two inverter devices 3 are operated at the same time, the harmonics generated at that time are tj', 5.7, 11, 13.
The order ranges from 17, 19, 23, 25, etc., and the generation level generally decreases in inverse proportion to the order.
この場合の運転方法としては、区分開閉器Ｓ ９１Ｓ
ＩＩ・・・を総て閉とした上で主開閉器６を閉ｔこ干る
。In this case, the operating method is to use the section switch S 91S.
After closing all II..., close the main switch 6.
これにより、インバータ装置３で発生する各高調波は、
各フィルターＦ５．Ｆ７．Ｆ９・・・により吸収され外
部への流出は防止される。又、このときのコンデンサの
総投入容量Ｃｎは、２基のインバータ装置３が必要とす
る遅相電力を供給するよう設定されているので、電源側
の力率はほぼ１００％に改善される。As a result, each harmonic generated in the inverter device 3 is
Each filter F5. F7. It is absorbed by F9 and prevented from flowing out. Further, since the total capacitance Cn of the capacitors at this time is set to supply the delayed phase power required by the two inverter devices 3, the power factor on the power source side is improved to approximately 100%.
一方、インバータ装置３を１基のみ運転したときに発生
する高調波の分布は、２基運転した場合と同じであり、
その発生レベルは各高調波でそれぞれ半分となる。又、
既述したように、５，７次のような低次の高調波が比較
的に高レベルで発生するので、この低次の高調波を吸収
すれば、インバータ装置３より発生する総合の高調波量
の大半を低減させることができる。それ故、この場合に
は、区分器ｒ１１器５９１Ｓｌｌ・・・を総で開にし主
開閉器６を閉にし、高調波の発生量の多い第５次と第７
次との高調波フィルターＦ５．Ｆ、のみを電源に接続す
る。又、このときインバータ装置３に供給すべき遅相電
力も２基運転の場合の半分となるので、投入されたコン
デンサ容量Ｃ５とＣ２との合計容量により、力率をほぼ
１（）０％に改善できる。On the other hand, the distribution of harmonics generated when only one inverter device 3 is operated is the same as when two inverter devices are operated,
The generation level is halved for each harmonic. or,
As mentioned above, low-order harmonics such as the 5th and 7th harmonics are generated at relatively high levels, so if these low-order harmonics are absorbed, the total harmonics generated by the inverter device 3 can be reduced. The majority of the amount can be reduced. Therefore, in this case, all the dividers r11 and 591Sll... are opened and the main switch 6 is closed, and the 5th and 7th harmonics, which generate a large amount of harmonics, are
Harmonic filter with F5. Connect only F to the power supply. Also, since the lagging phase power to be supplied to the inverter device 3 at this time is half of that in the case of two-unit operation, the power factor can be reduced to approximately 1()0% by the total capacitance of the input capacitors C5 and C2. It can be improved.
（時変圧器３の一方の巻線がデルタ／スター（人）のと
き。(When one winding of time transformer 3 is delta/star (person).
インバータ装置３を２基同時に運転したとき、それぞれ
のインバータ装置３より第５．７，１１゜］ ３．＋
７．１９．２３．２５次・・・の高調波が発生するが、
各変圧器４の１次側に流れる電流の位相がずれることに
より、発生した高調波の内、第５゜７次の低次の高調波
は打ち消され外部への流出は抑制される。従って、この
場合の運転方法としては、高調波の流出の点ではフィル
ターＦ、Ｉ’、は特に投入する必要はないが、力率の改
善のｔこめに、フィルターＦ１．Ｆ、を含むすべてのフ
ィルターＦを投入する。即ち、区分開閉器Ｓ ９１ Ｓ
ｌ ｌ・・・を総て閉とした上で主開閉器６を閉にす
る。これにより、インバータ装置３で発生する各高調波
は、各フィルターＦ５．Ｆ、、Ｆ９・・・により吸収さ
れ外部への流出は防止される。When two inverter devices 3 are operated at the same time, 5.7° and 11° from each inverter device 3] 3. +
7.19th, 23rd, 25th harmonics are generated,
By shifting the phase of the current flowing to the primary side of each transformer 4, among the generated harmonics, the lower harmonics of the 5th and 7th orders are canceled out and their outflow to the outside is suppressed. Therefore, as for the operating method in this case, there is no need to use filters F and I' in terms of outflow of harmonics, but filter F1. Input all filters F including F. That is, section switch S 91 S
After closing all l, l..., the main switch 6 is closed. Thereby, each harmonic generated in the inverter device 3 is transmitted to each filter F5. It is absorbed by F, , F9, etc., and is prevented from flowing out.
一方、インバータ装置３を１基のみ運転する場合には、
デルタ／デルタ結線の変圧器４側のインバータ装置３を
休止し、デルタ／スター結線の変圧器・を側のインバー
タ装置３を運転するようにする。このときに発生する高
調波の分布は、上述した（＋）の場合と同じであるが、
この場合には、例えば、区分開閉器５１７１Ｓ１９のみ
を閑にし、ｍ５次、７次、１７次及び１９次のフィルタ
ーＦ ５１ Ｆ ７１１−ｌ？１Ｆ１９を電源に接続す
れば、高調波をほぼ吸収することができる。尚、このと
きは、投入したフィルターのコンデンサーＣ、＋ Ｃ７
１Ｃ＋ ７１ ＣＩ ９の介容量を該フィルタ一群Ｆの
総容量Ｃｎの半分に設定しておけば、力率をほぼ１００
％に保つことカＣできる。On the other hand, when operating only one inverter device 3,
The inverter device 3 on the transformer 4 side of the delta/delta connection is stopped, and the inverter device 3 on the transformer side of the delta/star connection is operated. The distribution of harmonics generated at this time is the same as the (+) case described above, but
In this case, for example, only the section switch 5171S19 is left blank, and the m5th, 7th, 17th, and 19th order filters F 51 F 711-l? If 1F19 is connected to a power source, almost all harmonics can be absorbed. In addition, at this time, the capacitors C and +C7 of the input filter
If the intervening capacitance of 1C+ 71 CI 9 is set to half of the total capacitance Cn of the filter group F, the power factor will be approximately 100.
It is possible to maintain the power within %.
［発明の効果１
この発明は、高調波の各次数毎に設けた上記フィルター
を個別に開閉する開閉装置を設け、複数台の装置を部分
的に運転するときには、該開閉装置を所定の手順に従っ
て開閉するようにしたので、低負荷時においてら、高調
波の総合発生量を所定の許容値以下とすることができ、
回路が進み力率になることもない。[Effect of the invention 1] The present invention provides a switching device that individually opens and closes the filter provided for each harmonic order, and when partially operating a plurality of devices, the switching device is operated according to a predetermined procedure. Since it is designed to open and close, the total amount of harmonics generated can be kept below the specified allowable value even during low loads.
The circuit will not advance and the power factor will not increase.
第１図はこの発明の高調波フィルターの１実施例を適用
したシステム構成図、第２図は、従来の高調波フィルタ
ーを用いたシステム構成図である。
１・・・誘導炉、２・・・透導加熱装置、３・・・イン
バータ装置、４・・・変圧器、５．６・・・開閉器、Ｌ
・・・リアクトル、Ｃ・・・コンデンサ・・・、Ｆ・・
・フィルター、Ｓ・・・区分開閉器。FIG. 1 is a system configuration diagram to which an embodiment of the harmonic filter of the present invention is applied, and FIG. 2 is a system configuration diagram using a conventional harmonic filter. 1... Induction furnace, 2... Transmission heating device, 3... Inverter device, 4... Transformer, 5.6... Switch, L
...Reactor, C...Capacitor..., F...
・Filter, S...Division switch.
Claims (4)
装置で発生する高調波を吸収できるよう、高調波の各次
数毎にリアクトル及びコンデンサからなるフィルターを
備えるとともに、該装置で必要とする遅相電力を供給で
きるよう、該コンデンサの総容量を設定した高調波フィ
ルターにおいて上記装置を複数台同時運転したときに必
要となる遅相電力を供給できるよう、上記コンデンサの
総容量を設定するとともに、高調波の各次数毎に設けた
上記フィルターを個別に開閉する開閉装置を設け、前記
複数台の装置を部分的に運転するときには、該開閉装置
を所定の手順に従って開閉することを特徴とする高調波
フィルター。(1) It is used by connecting to the power supply side of a device such as an inverter, and is equipped with a filter consisting of a reactor and a capacitor for each order of harmonics so that the harmonics generated by the device can be absorbed. The total capacitance of the capacitor is set so that the total capacitance of the capacitor is set so as to supply the slow phase power required when multiple units of the above devices are operated simultaneously in the harmonic filter. Further, a switching device is provided to individually open and close the filter provided for each harmonic order, and when partially operating the plurality of devices, the switching device is opened and closed according to a predetermined procedure. harmonic filter.
手順は、すべての開閉器を閉にする特許請求の範囲第１
項に記載の高調波フィルター。(2) When all of the above devices are operated, the above predetermined procedure is to close all the switches.
Harmonic filters as described in section.
置の電源変圧器の巻線がデルタ／デルタ結線のときにあ
っては、上記所定の手順は、第５次及び７次のフィルタ
ーの開閉器のみを閉にする特許請求の範囲第１項に記載
の高調波フィルター。(3) When only one unit of the above device is operated and the winding of the power transformer of the device is a delta/delta connection, the above prescribed procedure shall be applied to the fifth and seventh order. The harmonic filter according to claim 1, wherein only a switch of the filter is closed.
置の電源変圧器の巻線がデルタ／スター結線のときにあ
っては、上記所定の手順は、第５次、７次、１７次及び
１９次のフィルターの開閉器のみを閉にする特許請求の
範囲第１項に記載の高調波フィルター。(4) When only one unit of the above device is operated, and the winding of the power transformer of the device is a delta/star connection, the above prescribed procedure is performed for the 5th, 7th, The harmonic filter according to claim 1, wherein only the switches of the 17th and 19th order filters are closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082003A JPS63249426A (en) | 1987-04-02 | 1987-04-02 | Harmonic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082003A JPS63249426A (en) | 1987-04-02 | 1987-04-02 | Harmonic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63249426A true JPS63249426A (en) | 1988-10-17 |
Family
ID=13762338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62082003A Pending JPS63249426A (en) | 1987-04-02 | 1987-04-02 | Harmonic filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63249426A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121022A (en) * | 1990-09-10 | 1992-04-22 | Fuji Electric Co Ltd | Harmonics filter connection method |
| JP2014107962A (en) * | 2012-11-28 | 2014-06-09 | Tokyo Metropolitan Univ | Harmonic wave suppression device |
| JP2016040973A (en) * | 2014-08-12 | 2016-03-24 | 西芝電機株式会社 | Ship power system |
-
1987
- 1987-04-02 JP JP62082003A patent/JPS63249426A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121022A (en) * | 1990-09-10 | 1992-04-22 | Fuji Electric Co Ltd | Harmonics filter connection method |
| JP2014107962A (en) * | 2012-11-28 | 2014-06-09 | Tokyo Metropolitan Univ | Harmonic wave suppression device |
| JP2016040973A (en) * | 2014-08-12 | 2016-03-24 | 西芝電機株式会社 | Ship power system |
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