JPH048160A - Frequency converter - Google Patents
Frequency converterInfo
- Publication number
- JPH048160A JPH048160A JP32229190A JP32229190A JPH048160A JP H048160 A JPH048160 A JP H048160A JP 32229190 A JP32229190 A JP 32229190A JP 32229190 A JP32229190 A JP 32229190A JP H048160 A JPH048160 A JP H048160A
- Authority
- JP
- Japan
- Prior art keywords
- power
- aesm
- operated
- frequency
- frequency converter
- 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
- 230000001360 synchronised effect Effects 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000005284 excitation Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000001629 suppression Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Ac-Ac Conversion (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、周波数の異なる系統部で有効電力の授受を
行う周波数置換装！に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] This invention is a frequency replacement device that exchanges active power between system sections with different frequencies! It is related to.
［従来の技術］
第３図は従来の周波数変換装置を示す回路図であり、図
において（１） 、 （２）は点弧角を制御することに
よって交流／直流変換を行うコンバータ、（３）はＤＣ
リアクトルである。これらコンバータ（１）および（２
）並びにＤＣリアクトル（３）は図示のように閉回路を
形成している。（４） 、 ＜５＞は各コンバータ（１
）、（２）にそれぞれ接続された電源供給変圧器、（６
） 、 （７）は各電源供給変圧器＜４） 、 （５）
と大地の間にそれぞれ接続された高調波抑制用フィルタ
、（８）、（９）は各高調波抑制用フィルタ（６＞ 、
（７）とそれぞれ並列に接続された力率改善用コンデ
ンサ、（ｔｏ＞、（１１）は各電源供給変圧器（４）、
（５）とそれぞれ５０Ｈｚ系、６０Ｈｚ系との間に接続
された系統接続用変圧器である。[Prior Art] Fig. 3 is a circuit diagram showing a conventional frequency converter, in which (1) and (2) are converters that perform AC/DC conversion by controlling the firing angle, and (3) are converters that perform AC/DC conversion by controlling the firing angle. is DC
It is a reactor. These converters (1) and (2)
) and the DC reactor (3) form a closed circuit as shown. (4) and <5> are each converter (1
), (2) respectively connected power supply transformers, (6
), (7) is for each power supply transformer <4), (5)
(8) and (9) are each harmonic suppression filter (6>,
(7) are respectively connected in parallel with power factor correction capacitors, (to>, (11) are each power supply transformer (4),
(5) and a grid connection transformer connected between the 50Hz system and the 60Hz system, respectively.
従来の周波数変換装置は上述したように構成されており
、６０Ｈｚ系より５０Ｈｚ系へ電力を供給する場合には
、系統接続用変圧器（１１）及び電源供給用変圧器（５
）にて降圧された６０Ｈｚの電源をコンバータ（２）に
て直流（ＤＣ）に変換する。このＤＣに変換された電力
はＤＣリアクトルク３）を通してコンバータ（１）へ供
給され、ここで５０Ｈｚの交流電源に変換される、この
５０Ｈｚの電源は電源供給変圧器（４）及び系統接続用
変圧器（１０）を通して５０Ｈｚ系の系統へ電力を供給
する。A conventional frequency converter is configured as described above, and when supplying power from a 60Hz system to a 50Hz system, a grid connection transformer (11) and a power supply transformer (5) are required.
) is converted into direct current (DC) by a converter (2). This DC power is supplied to the converter (1) through the DC reactor 3), where it is converted to 50Hz AC power.This 50Hz power is supplied to the power supply transformer (4) and the grid connection transformer. Power is supplied to the 50Hz system through the device (10).
この時、高調波抑制用フィルタ（７） 、 （８）はコ
ンバータ（２）、（１）のそれぞれ交直変換、直交変換
時に発生する高調渡分吸収する。また力率改善用コンデ
ンサ（９） 、 （８）は、コンバータ（２） 、（１
）のそれぞれ交直変換、直交変換時に必要となる無効電
力を補償する。At this time, harmonic suppression filters (7) and (8) absorb harmonic components generated during AC/DC conversion and orthogonal conversion of converters (2) and (1), respectively. In addition, the power factor improvement capacitors (9) and (8) are connected to the converters (2) and (1
) to compensate for the reactive power required during AC/DC conversion and orthogonal conversion, respectively.
他方、５０ｆｌｚ系より６０Ｈｚ系へ電力を供給する場
合には、コンバータ（１）、（２）の動作が６０Ｈｚ系
より５０Ｈｚ系への電力供給の逆の動作をする。On the other hand, when power is supplied from the 50 flz system to the 60 Hz system, the operations of converters (1) and (2) are reverse to the operation of power supply from the 60 Hz system to the 50 Hz system.
［発明の解決しようとする課題］
従来の周波数変換装置は、コンバータの点弧時に発生す
る高調波を抑制するための大きなフィルタが必要であり
、またコンバータの運転力率は通過電力により変化する
が、その値は約０．３〜０．４であり、そのために無効
電力補償用に大きな力率改善用コンデンサが必要になる
ばかりでなく、通過電力に応じてコンデンサの値を制御
する必要があり、周波数変換設備以外に大きな付帯設備
が必要となるなどの問題点があった。[Problems to be solved by the invention] Conventional frequency converters require a large filter to suppress harmonics generated when the converter is turned on, and the operating power factor of the converter changes depending on the passing power. , its value is about 0.3 to 0.4, which not only requires a large power factor correction capacitor for reactive power compensation, but also requires controlling the value of the capacitor according to the passing power. However, there were problems such as the need for large auxiliary equipment in addition to frequency conversion equipment.
この発明は、このような問題点を解決するためになされ
たもので、高調波抑制用フィルタ及び力率改善用コンデ
ンサが不要な周波数変換装置を得ることを目的とする。The present invention was made to solve these problems, and an object of the present invention is to provide a frequency conversion device that does not require a harmonic suppression filter and a power factor correction capacitor.
［課題を解決するための手段］
この発明に係る周波数変換装置は、直列に接続された２
台の同期機を備え、しかもこれら同期機のうちの少なく
とも一方を二次交流励磁形同期機（八ＥＳＭ）としたも
のである。[Means for Solving the Problems] A frequency conversion device according to the present invention has two
The machine is equipped with two synchronous machines, and at least one of these synchronous machines is a secondary AC excitation type synchronous machine (8ESM).
［作 用］
この発明において、＾ＥＳＭは電力供給側周波数電源に
接続された場合には電動機として運転されるが、電力受
電側周波数電源に接続された場合には発電機として運転
され、これにより異周波数電源間での電力の授受を可能
にする。[Function] In this invention, when the ^ESM is connected to the frequency power source on the power supply side, it is operated as a motor, but when it is connected to the frequency power source on the power receiving side, it is operated as a generator, and thereby Enables power transfer between different frequency power sources.
［実施例〕
以下、この発明の一実施例を図面について説明する。第
１図はこの発明に係る周波数変換装置の一実施例を示す
回路図であり、図において（１２）。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram showing an embodiment of the frequency conversion device according to the present invention, and in the figure (12).
（１３）は同期機例えば二次交流励磁形同期機（八ＥＳ
Ｓ）であって、それらの軸が結ばれている。＜１４）
、 ＜１５）は各＾ＥＳＭ（１２） 、 （１３）に接
続され、その回転速度と融通電力に応じて各＾ＥＳＭ（
１２） 、 （１３）の二次側励磁量を制御する二次励
磁制御装置、（１Ｂ＞ 、 （１７）は各二次励磁制御
装置（１４） 、 （１５）と各系統接続用変圧器（１
０）、（１１）との間にそれぞれ接続され、各二次励磁
制御装置（１４）、＜１５）へ電源を供給する励磁変圧
器である。(13) is a synchronous machine such as a secondary AC excitation type synchronous machine (8ES
S), and their axes are connected. <14)
, <15) is connected to each ^ESM (12), (13), and each ^ESM (
12), (13) are secondary excitation control devices that control the amount of secondary side excitation, (1B>, (17) are each secondary excitation control device (14), (15) and each system connection transformer ( 1
0) and (11), respectively, and supply power to each secondary excitation control device (14), <15).
このように構成されたこの発明の周波数変換装置におい
て、６０Ｈｚ系より５０Ｈｚ系へ電力を供給する場合に
は、＾ＥＳＮ（１２）は５０Ｈｚ系に、そして八ＥＳＭ
（１３）は６０１１２系に接続される。しかる後、＾Ｅ
ＳＭ（１３）は電動機として運転され、６０ｔ（ｚ系よ
り電力を受電する。In the frequency converter of the present invention configured as described above, when power is supplied from the 60Hz system to the 50Hz system, ^ESN (12) is set to the 50Hz system, and 8ESM
(13) is connected to the 60112 system. After that, ＾E
The SM (13) is operated as an electric motor and receives power from the 60t (z system).
また＾ＥＳＮ（１２）は発電機として運転され、＾ＥＳ
Ｍ（１３）が６０ｔｌｚ系より受電した電力を５０Ｈｚ
系へ電力に変換の上、５０ｔｌｚ系へ供給する。Also, ^ESN (12) is operated as a generator, and ^ESN (12) is operated as a generator.
M(13) converts the power received from the 60tlz system to 50Hz.
After converting it into electric power, it is supplied to the 50tlz system.
以上のように、電力供給側に接続された＾ＥＳＮは電動
機として、電力受電側に接続された＾ＥＳＭは発電機と
して運転され、これら２台の＾ＥＳＭの軸を結ぶことに
より、異なる周波数の電源間での電力の授受を可能にす
る。As mentioned above, the ^ESN connected to the power supply side is operated as a motor, and the ^ESM connected to the power receiving side is operated as a generator. By connecting the axes of these two ^ESMs, different frequencies can be generated. Enables power transfer between power sources.
第２図はこの発明の他の実施例を示す回路図であり、図
において＜１０＞、（１１）、（１３）、（１５）〜（
１７）は第１図について説明したものと同じである。（
１８）は同期機であって、その軸が＾ＥＳＭ（１３）の
軸に結ばれている。そして（１９）は同期＃Ｉ（１８）
に接続され、その端子電圧に応じて同期機（１８）の励
磁量を制御する励磁制御装置である。FIG. 2 is a circuit diagram showing another embodiment of the present invention, in which <10>, (11), (13), (15) to (
17) is the same as that described with respect to FIG. (
18) is a synchronous machine whose shaft is connected to the shaft of ESM (13). and (19) is synchronous #I (18)
This is an excitation control device that is connected to the synchronous machine (18) and controls the amount of excitation of the synchronous machine (18) according to the terminal voltage.
このように構成されたこの発明の他の実施例において、
６０Ｈｚ系より５０Ｈｚ系へ電力を供給する場合には、
同期機（１８）は５０Ｈｚ系に、そして＾ＥＳＭ（１３
）は６０Ｈ２系に接続される。しかる後、＾ＥＳＭ（１
３）は電動機として運転され、８０）ｌｚ系より電力を
受電する。In another embodiment of the invention configured in this way,
When supplying power from a 60Hz system to a 50Hz system,
The synchronous machine (18) is 50Hz system, and the ESM (13)
) is connected to the 60H2 system. After that, ＾ESM(1
3) is operated as an electric motor and receives power from the 80) lz system.
また、同期機（１８）は発電機として運転され、八ＥＳ
Ｍ（１３）が６０１１ｚ系より受電した電力を５０１１
ｚ系の電力に変換の上、５０［１ｚ系へ供給する。In addition, the synchronous machine (18) is operated as a generator, and the 8ES
M(13) converts the power received from the 6011z system to 5011
After converting to z-system power, 50 [1] is supplied to the z-system.
また、逆に５０Ｈｚ系より６０Ｈｚ系へ電力を供給する
場合には、同期機（１８）は５０ｔｌｚ系に接続されか
つ電動機として運転され、５０Ｈｚ系より電力を受電す
る。Conversely, when power is supplied from the 50Hz system to the 60Hz system, the synchronous machine (18) is connected to the 50Hz system, operates as a motor, and receives power from the 50Hz system.
ＡＥＳＭ（１３）は６０）（ｚ系に接続されかつ発電機
として運転され、同期機（１８）が５０Ｈｚ系より受電
した電力を６０Ｈｚ系の電力に変換の上、６０Ｈｚ系へ
供給する。The AESM (13) is connected to the 60) (z system and operated as a generator, and the synchronous machine (18) converts the power received from the 50Hz system into 60Hz power and supplies it to the 60Hz system.
以上のように、性質の異なる同期機とＡＥＳＭを直列に
接続し、ＡＥＳＭの受電電力値または発電電力値を制御
することにより異なる周波数の電源間での電力の授受を
可能にする。As described above, by connecting a synchronous machine with different properties and an AESM in series and controlling the received power value or generated power value of the AESM, it is possible to transfer power between power sources of different frequencies.
［発明の効果］
以上、詳しく説明したように、この発明は、直列に接続
された２台の同期機を備え、しかもこれら同期機のうち
の少なくとも一方を二次交流励磁形同期機とし、前記二
次交流励磁形同期機は電力供給側周波数電源に接続され
た場合には電動機として運転されるが、電力受電側周波
数電源に接続された場合には発電機として運転されるこ
とにより、２台の同期機を力率１．０で運転出来るので
、力率改善用コンデンサ等の設備が不要となり、安価で
かつコンパクトな周波数変換装買が実現出来るという効
果を奏する。[Effects of the Invention] As explained in detail above, the present invention includes two synchronous machines connected in series, and at least one of these synchronous machines is a secondary AC excitation type synchronous machine, and the above-mentioned When a secondary AC excitation type synchronous machine is connected to a frequency power source on the power supply side, it operates as an electric motor, but when connected to a frequency power source on the power receiving side, it operates as a generator. Since the synchronous machine can be operated with a power factor of 1.0, equipment such as a power factor improving capacitor is not required, and an inexpensive and compact frequency conversion equipment can be realized.
第１図はこの発明の一実施例を示す回路図、第２図はこ
の発明の他の実施例を示す回路図、第３図は従来の周波
数変換装置を示す回路図である。
図において、（１２）、（１３）は二次交流励磁形同期
機、（１８）は同期機である。
なお、各図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a circuit diagram showing one embodiment of the present invention, FIG. 2 is a circuit diagram showing another embodiment of the invention, and FIG. 3 is a circuit diagram showing a conventional frequency conversion device. In the figure, (12) and (13) are secondary AC excitation type synchronous machines, and (18) is a synchronous machine. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
変換装置において、直列に接続された２台の同期機を備
え、しかもこれら同期機のうちの少なくとも一方を二次
交流励磁形同期機とし、前記二次交流励磁形同期機は電
力供給側周波数電源に接続された場合には電動機として
運転されるが、電力受電側周波数電源に接続された場合
には発電機として運転され、もって異周波数電源間での
授受電力値を制御することを特徴とする周波数変換装置
。A frequency conversion device that enables the transmission and reception of power between power sources with different frequencies, comprising two synchronous machines connected in series, at least one of which is a secondary AC excitation type synchronous machine, The secondary AC excitation type synchronous machine operates as a motor when connected to a frequency power source on the power supply side, but operates as a generator when connected to a frequency power source on the power receiving side, thereby generating a different frequency power source. A frequency conversion device characterized by controlling a value of power transmitted and received between the frequency converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32229190A JP2575535B2 (en) | 1990-04-25 | 1990-11-28 | Frequency converter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10748190 | 1990-04-25 | ||
| JP2-107481 | 1990-04-25 | ||
| JP32229190A JP2575535B2 (en) | 1990-04-25 | 1990-11-28 | Frequency converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH048160A true JPH048160A (en) | 1992-01-13 |
| JP2575535B2 JP2575535B2 (en) | 1997-01-29 |
Family
ID=26447508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32229190A Expired - Fee Related JP2575535B2 (en) | 1990-04-25 | 1990-11-28 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575535B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9683587B2 (en) | 2012-02-03 | 2017-06-20 | Kyb Corporation | Fluid pressure control device |
-
1990
- 1990-11-28 JP JP32229190A patent/JP2575535B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9683587B2 (en) | 2012-02-03 | 2017-06-20 | Kyb Corporation | Fluid pressure control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2575535B2 (en) | 1997-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |