JPH11275865A - Three-phase wide range input power converting circuit - Google Patents
Three-phase wide range input power converting circuitInfo
- Publication number
- JPH11275865A JPH11275865A JP10096669A JP9666998A JPH11275865A JP H11275865 A JPH11275865 A JP H11275865A JP 10096669 A JP10096669 A JP 10096669A JP 9666998 A JP9666998 A JP 9666998A JP H11275865 A JPH11275865 A JP H11275865A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- input
- power conversion
- power supply
- power
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/0085—Partially controlled bridges
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Rectifiers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は三相広範囲入力の電
力変換回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-phase wide-range input power conversion circuit.
【０００２】 （２）(2)
【従来の技術】従来より、図１に示すような三相交流電
源からスター結線により３つに分割された電力変換部へ
接続し、各電力変換部の入力電圧は、三相広範囲入力に
対して相電圧すなわち単相広範囲電圧が印加される方法
が用いられている。図１において各電力変換部１７、１
８、１９の入力には、それぞれダイオード５、６、７、
８と９、１０、１１、１２と１３、１４、１５、１６で
構成される単相全波整流回路があり、単相全波整流回路
の交流入力の一方には三相交流電源１の入力ラインがそ
れぞれ接続され、単相全波整流回路のもう一方の交流入
力には、他のブロックのものと共通に接続して、接続点
をそれぞれキャパシタンス２、３、４を介して三相交流
電源１の各入力ラインに接続する。すなわち、接続点は
疑似中性点となり、三相四線式の場合には、接続点はキ
ャパシタンスを介さずにニュートラルラインに接続す
る。単相全波整流回路の出力には、電力変換部が接続
し、三つの電力変換部の出力はプラス及びマイナス側を
それぞれ共通になるように並列接続を行う。2. Description of the Related Art Conventionally, a three-phase AC power source as shown in FIG. 1 is connected to a power converter divided into three by a star connection, and an input voltage of each power converter is applied to a three-phase wide-range input. In this method, a phase voltage, that is, a single-phase wide range voltage is applied. In FIG. 1, each power conversion unit 17, 1
The inputs of 8, 19 are diodes 5, 6, 7,
There is a single-phase full-wave rectifier circuit composed of 8 and 9, 10, 11, 12 and 13, 14, 15, and 16; Lines are connected respectively, and the other AC input of the single-phase full-wave rectifier circuit is connected in common with those of the other blocks, and the connection points are connected to the three-phase AC power supply via the capacitances 2, 3, and 4, respectively. 1 to each input line. That is, the connection point is a pseudo-neutral point, and in the case of a three-phase four-wire system, the connection point connects to a neutral line without passing through a capacitance. A power converter is connected to the output of the single-phase full-wave rectifier circuit, and the outputs of the three power converters are connected in parallel so that the plus and minus sides are common.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来回路
において、電力変換部の入力電圧は単相広範囲入力１０
０Ｖ系および２００Ｖ系となる。したがって、電力変換
部の半導体素子および各素子の耐圧は２００Ｖ系に、耐
電流は１００Ｖ系に支配されるため、設計時において複
雑となる。また、例えば電力変換部に力率改善機能を持
たせるため昇圧チョッパを用いると、入力チョーク設計
が１００Ｖ系に依存するため、巻線部が大きくなる問題
点が生じる。また、電力変換効率も１００Ｖ系では、各
半導体等に流れる電流実効値が大きくなるため、効率の
低下という問題点が生じる。However, in the above-mentioned conventional circuit, the input voltage of the power conversion section is a single-phase wide-range input.
It becomes 0V system and 200V system. Therefore, the withstand voltage of the semiconductor element and each element of the power conversion unit is governed by the 200 V system, and the withstand current is governed by the 100 V system. Further, for example, when a boost chopper is used to provide the power conversion unit with a power factor improving function, the input choke design depends on the 100 V system, so that there is a problem that the winding unit becomes large. In addition, in the power conversion efficiency of the 100 V system, the effective value of the current flowing through each semiconductor or the like becomes large, so that there is a problem that the efficiency is reduced.
【０００４】上記問題点を解決するため、本発明は三相
広範囲入力に対して、電力変換部の入力電圧を単相２０
０Ｖ系のみとなるようにして、設計を容易にし、高効率
化、巻線部の小型化を図った電源を提供することを目的
とする。In order to solve the above-mentioned problem, the present invention provides a single-phase 20-phase input voltage for a three-phase wide-range input.
An object of the present invention is to provide a power supply that is designed to have only a 0 V system, facilitates design, increases efficiency, and reduces the size of a winding unit.
【０００５】 （３）(3)
【発明を解決するための手段】本発明は、３つの電力変
換部を用いた三相入力電力変換回路において、入力電圧
が高いときには三相交流電源と前記電力変換部をスター
結線し、入力電圧が低いときには前記三相交流電源と前
記電力変換部をデルタ結線するように切り替えることを
特徴とする三相広範囲入力電力変換回路である。これに
よって、広範囲な入力電圧に対して、整流回路の各素子
の耐圧を補償することが出来る。According to the present invention, in a three-phase input power conversion circuit using three power converters, when an input voltage is high, a three-phase AC power supply and the power converter are star-connected to each other, and the input voltage is reduced. When the power supply is low, the three-phase AC power supply and the power converter are switched so as to be connected in a delta connection. Thus, the withstand voltage of each element of the rectifier circuit can be compensated for a wide range of input voltage.
【０００６】又、本発明は、切り替えを実現する手段と
して、３つの電力変換部の前段には単相全波整流回路が
接続し、その交流入力の一方には三相交流電源の入力ラ
インを、他方は電力変換部の各ブロックを共通に接続
し、その共通接続点を三つのキャパシタンスを介して三
相交流電源の入力ラインに接続し、直列接続した２個の
サイリスタのカソードをそれぞれの単相全波整流回路の
出力のプラス側に、アノードをマイナス側に接続して、
単相全波整流回路の三相交流電源の入力ラインと、２個
のサイリスタのアノードとカソードの接続点が三相交流
電源に対してデルタ結線となるように接続し、単相全波
整流回路の出力には電力変換部の入力を接続し、電力変
換部の出力は各電力変換部のプラス側、マイナス側が共
通になるように並列接続した事を特徴とする三相広範囲
入力電力変換回路である。Further, according to the present invention, as means for realizing switching, a single-phase full-wave rectifier circuit is connected in front of the three power converters, and one of its AC inputs is connected to an input line of a three-phase AC power supply. The other is connected in common to the respective blocks of the power conversion unit, the common connection point is connected to the input line of the three-phase AC power supply via three capacitances, and the cathodes of two thyristors connected in series are connected to the respective thyristors. Connect the anode to the plus side of the output of the full-wave rectifier circuit and the anode to the minus side,
The input line of the three-phase AC power supply of the single-phase full-wave rectifier circuit and the connection point of the anode and cathode of the two thyristors are connected so as to form a delta connection with the three-phase AC power supply. The output of the power converter is connected to the input, and the output of the power converter is connected in parallel so that the plus side and the minus side of each power converter are connected in parallel. is there.
【０００７】又、本発明は、サイリスタには、前記三相
交流電源電圧が２００Ｖ系時にはオン信号が入り、前記
三相交流電源電圧が４００Ｖ系時にはオフ状態であるこ
とを特徴とする三相広範囲入力回路電力変換回路であ
る。Further, according to the present invention, the thyristor receives an ON signal when the three-phase AC power supply voltage is 200 V, and is in an OFF state when the three-phase AC power supply voltage is 400 V. It is an input circuit power conversion circuit.
【０００８】[0008]
【発明の実施の形態】図２は、本発明の一実施例を示
す。図２の回路の構成について説明する。尚図２におい
て図１で説明したものと同じ部品は同じ符号を用いてい
る。FIG. 2 shows an embodiment of the present invention. The configuration of the circuit in FIG. 2 will be described. In FIG. 2, the same components as those described in FIG. 1 are denoted by the same reference numerals.
【０００９】図２において、各電力変換部の入力には、
それぞれダイオード５、６、７、８と９、１０、１１、
１２と１３、１４、１５、１６で構成される単相全波整
流回 （４） 路があり、それぞれの単相全波整流回路の交流入力部の
一方には、三相交流電源１からの各入力ラインが接続さ
れる。単相全波整流回路のもう一方の交流入力は、他の
ブロックのものと共通に接続して、接続点をそれぞれコ
ンデンサ２、３、４を介して三相交流電源１の各入力ラ
インに接続する。電力変換部１７のブロックで、サイリ
スタ２０のカソードを単相全波整流回路のプラス出力側
すなわちダイオード５、７のカソードに接続し、サイリ
スタ２１のアノードを単相全波整流回路のマイナス出力
側すなわちダイオード６、８のアノードに接続して、サ
イリスタ２０のアノードとサイリスタ２１のカソードと
を接続する。In FIG. 2, the input of each power converter is:
The diodes 5, 6, 7, 8 and 9, 10, 11, respectively
There is a single-phase full-wave rectifier circuit (4) composed of 12 and 13, 14, 15, and 16. One of the AC input sections of each single-phase full-wave rectifier circuit has a single-phase full-wave rectifier circuit. Each input line is connected. The other AC input of the single-phase full-wave rectifier circuit is commonly connected to those of the other blocks, and the connection points are connected to the input lines of the three-phase AC power supply 1 via the capacitors 2, 3, and 4, respectively. I do. In the block of the power conversion unit 17, the cathode of the thyristor 20 is connected to the positive output side of the single-phase full-wave rectifier circuit, that is, the cathodes of the diodes 5 and 7, and the anode of the thyristor 21 is connected to the negative output side of the single-phase full-wave rectifier circuit. The anodes of the thyristors 20 and 21 are connected to the anodes of the diodes 6 and 8, respectively.
【００１０】同様にして、他の電力変換部ブロックにお
いても単相全波整流回路の出力すなわち電力変換部の入
力にサイリスタの直列回路を並列に接続する。単相全波
整流回路の交流入力に、電力変換部１７のブロックでは
Ｕ相、電力変換部１８のブロックではＶ相、電力変換部
１９のブロックではＷ相ラインを接続しているとすれ
ば、サイリスタ２０のアノードとサイリスタ２１のカソ
ードとの接続点には、三相交流電源ラインのＶ相ライン
を接続し、サイリスタ２２のアノードとサイリスタ２３
のカソードとの接続点には、三相交流電源ラインのＷ相
ラインを接続し、サイリスタ２４のアノードとサイリス
タ２５のカソードとの接続点には、三相交流電源ライン
のＵ相ラインを接続する。各電力変換部の出力は、プラ
ス側及びマイナス側を共通となるように、並列接続して
出力端子となる。Similarly, in another power converter block, a series circuit of thyristors is connected in parallel to the output of the single-phase full-wave rectifier circuit, that is, the input of the power converter. Assuming that a U-phase line is connected to the AC input of the single-phase full-wave rectifier circuit in the block of the power conversion unit 17, a V-phase line is connected to the block of the power conversion unit 18, and a W-phase line is connected to the block of the power conversion unit 19. A connection point between the anode of the thyristor 20 and the cathode of the thyristor 21 is connected to a V-phase line of a three-phase AC power supply line, and the anode of the thyristor 22 and the thyristor 23 are connected.
Is connected to the W-phase line of the three-phase AC power supply line, and to the connection point between the anode of the thyristor 24 and the cathode of the thyristor 25, the U-phase line of the three-phase AC power supply line is connected. . The output of each power conversion unit is connected in parallel so that the plus side and the minus side are common, and becomes an output terminal.
【００１１】以下では、上記回路の動作説明をする。三
相２００Ｖ入力時には、サイリスタ２０、２１、２２、
２３、２４、２５のゲートにオン信号が入り、サイリス
タは整流動作を行いデルタ結線された状態となる。ここ
で、ダイオード７、８と１１、１２と１５、１６のアー
ムも関係してくると思われるが、相電圧よりも線間電圧
が大きいのは明らかであるため線間電圧が優先され、各
電力変換部の入力には線間電圧が印加される。次に三相
４００Ｖ入力時には、サイリスタ２０、２１、２２、２
３、２４、２５はオフ状態となり、スター結線された状
態となる。したがって、各電力変換部の入力には相電圧
が印加される。以上のように三相広範囲 （５） 入力に対して、スターおよびデルタ結線に切り替えるこ
とにより、電力変換部の入力電圧を２００Ｖ系にするこ
とが可能となる。The operation of the above circuit will be described below. At the time of three-phase 200V input, thyristors 20, 21, 22,
An ON signal is input to the gates of the gates 23, 24, and 25, and the thyristor performs a rectifying operation to be in a delta-connected state. Here, it is considered that the arms of the diodes 7, 8 and 11, 12 and 15, 15 and 16 are also involved. However, since the line voltage is obviously larger than the phase voltage, the line voltage is prioritized. A line voltage is applied to the input of the power converter. Next, at the time of three-phase 400V input, thyristors 20, 21, 22, 2
3, 24, and 25 are turned off and star-connected. Therefore, a phase voltage is applied to the input of each power conversion unit. As described above, the input voltage of the power conversion unit can be changed to a 200 V system by switching to the star and delta connection for the three-phase wide range (5) input.
【００１２】[0012]
【発明の効果】以上の説明から明らかなように、本発明
によれば電力変換部の入力電圧は２００Ｖ系のみとな
り、設計を容易にし、高効率化、巻線類の小型化を図っ
た電源を提供できるものである。As is apparent from the above description, according to the present invention, the input voltage of the power converter is only the 200 V system, so that the power supply can be designed easily, the efficiency can be improved, and the windings can be reduced in size. Can be provided.
【図１】従来の回路図FIG. 1 is a conventional circuit diagram.
【図２】本発明の一実施例回路図FIG. 2 is a circuit diagram of one embodiment of the present invention.
【図３】本発明の他の実施例回路図FIG. 3 is a circuit diagram of another embodiment of the present invention.
１ 三相交流電源 ２，３，４ キャパシタンス ５，６，７，８，９，１０，１１，１２，１４，１５，
１６ ダイオード １７，１８，１９ 電力変換部 ２０，２１，２２，２３，２４，２５ サイリスタ ２６，２７，２８ スイッチ1 Three-phase AC power supply 2,3,4 Capacitance 5,6,7,8,9,10,11,12,14,15,
16 Diode 17, 18, 19 Power conversion unit 20, 21, 22, 23, 24, 25 Thyristor 26, 27, 28 Switch
Claims (3)
変換回路において、入力電圧が高いときには三相交流電
源と前記電力変換部をスター結線し、入力電圧が低いと
きには前記三相交流電源と前記電力変換部をデルタ結線
するように切り替えることを特徴とする三相広範囲入力
電力変換回路。In a three-phase input power conversion circuit using three power conversion units, a three-phase AC power supply and the power conversion unit are star-connected when an input voltage is high, and the three-phase AC power supply is used when an input voltage is low. And a three-phase wide-range input power conversion circuit, which switches between the power conversion unit and a delta connection.
回路において、 前記切り替えを実現する手段として、３つの前記電力変
換部の前段には単相全波整流回路が接続し、その交流入
力の一方には前記三相交流電源の入力ラインを、他方は
前記電力変換部の各ブロックを共通に接続し、その共通
接続点を三つのキャパシタンスを介して前記三相交流電
源の入力ラインに接続し、直列接続した２個のサイリス
タのカソードをそれぞれの前記単相全波整流回路の出力
のプラス側に、アノードをマイナス側に接続して、前記
単相全波整流回路の前記三相交流電源の入力ラインと、
２個の前記サイリスタのアノードとカソードの接続点が
前記三相交流電源に対してデルタ結線となるように接続
し、前記単相全波整流回路の出力には前記電力変換部の
入力を接続し、前記電力変換部の出力は各電力変換部の
プラス側、マイナス側が共通になるように並列接続した
事を特徴とする三相広範囲入力電力変換回路。2. The three-phase wide-range input power converter according to claim 1, wherein a single-phase full-wave rectifier is connected to a stage preceding the three power converters as means for realizing the switching. One is connected to the input line of the three-phase AC power supply, and the other is connected to each block of the power conversion unit in common, and the common connection point is connected to the input line of the three-phase AC power supply via three capacitances. The three-phase AC power source of the single-phase full-wave rectifier circuit is connected by connecting the cathodes of the two thyristors connected in series to the positive side of the output of the single-phase full-wave rectifier circuit and the anode to the negative side. Input line and
The connection points of the anode and cathode of the two thyristors are connected so as to form a delta connection to the three-phase AC power supply, and the output of the single-phase full-wave rectifier circuit is connected to the input of the power conversion unit. A three-phase wide-range input power conversion circuit, wherein the outputs of the power conversion units are connected in parallel such that the plus side and the minus side of each power conversion unit are common.
回路において、 前記サイリスタには、前記三相交流電源電圧が２００Ｖ
系時にはオン信号が入り、前記三相交流電源電圧が４０
０Ｖ系時にはオフ状態であることを特徴とする三相広範
囲入力回路電力変換回路。3. The three-phase wide-range input power conversion circuit according to claim 2, wherein the thyristor has a three-phase AC power supply voltage of 200 V.
In the system, an ON signal is input and the three-phase AC
A three-phase wide-range input circuit power conversion circuit, which is turned off at the time of a 0 V system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09666998A JP3900444B2 (en) | 1998-03-25 | 1998-03-25 | Three-phase wide input power conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09666998A JP3900444B2 (en) | 1998-03-25 | 1998-03-25 | Three-phase wide input power conversion circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11275865A true JPH11275865A (en) | 1999-10-08 |
| JP3900444B2 JP3900444B2 (en) | 2007-04-04 |
Family
ID=14171223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09666998A Expired - Fee Related JP3900444B2 (en) | 1998-03-25 | 1998-03-25 | Three-phase wide input power conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3900444B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006197687A (en) * | 2005-01-12 | 2006-07-27 | Shindengen Electric Mfg Co Ltd | Three-phase rectifying circuit |
| WO2010007091A1 (en) * | 2008-07-16 | 2010-01-21 | International Business Machines Corporation | Intrinsically balanced direct current uninterruptible power supply |
| CN102647097A (en) * | 2011-02-17 | 2012-08-22 | 富士电机株式会社 | Power supply device |
| EP2869445A1 (en) * | 2013-11-01 | 2015-05-06 | DET International Holding Limited | Adaptable rectifier arrangement for operation with different AC grids |
| CN104852592A (en) * | 2014-02-18 | 2015-08-19 | 三菱电机株式会社 | Three-phase alternating-current power supply switching circuit |
-
1998
- 1998-03-25 JP JP09666998A patent/JP3900444B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006197687A (en) * | 2005-01-12 | 2006-07-27 | Shindengen Electric Mfg Co Ltd | Three-phase rectifying circuit |
| WO2010007091A1 (en) * | 2008-07-16 | 2010-01-21 | International Business Machines Corporation | Intrinsically balanced direct current uninterruptible power supply |
| US7847435B2 (en) | 2008-07-16 | 2010-12-07 | International Business Machines Corporation | Intrinsically balanced direct current uninterruptible power supply |
| CN102647097A (en) * | 2011-02-17 | 2012-08-22 | 富士电机株式会社 | Power supply device |
| JP2012175714A (en) * | 2011-02-17 | 2012-09-10 | Fuji Electric Co Ltd | Power supply unit |
| US8902621B2 (en) | 2011-02-17 | 2014-12-02 | Fuji Electric Co., Ltd. | Power supply device for use with selectable AC power supply voltage |
| EP2869445A1 (en) * | 2013-11-01 | 2015-05-06 | DET International Holding Limited | Adaptable rectifier arrangement for operation with different AC grids |
| US20150123612A1 (en) * | 2013-11-01 | 2015-05-07 | Det International Holding Limited | Adaptable input phase switching |
| CN104796012A (en) * | 2013-11-01 | 2015-07-22 | Det国际控股有限公司 | Adaptable input phase switching |
| US9935561B2 (en) * | 2013-11-01 | 2018-04-03 | Det International Holding Limited | Adaptable input phase switching |
| CN104796012B (en) * | 2013-11-01 | 2019-09-17 | 泰达电子股份有限公司 | Adaptable input phase switching |
| CN104852592A (en) * | 2014-02-18 | 2015-08-19 | 三菱电机株式会社 | Three-phase alternating-current power supply switching circuit |
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| JP3900444B2 (en) | 2007-04-04 |
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