JPH0564376A - Parallel operation method of charger - Google Patents
Parallel operation method of chargerInfo
- Publication number
- JPH0564376A JPH0564376A JP3218512A JP21851291A JPH0564376A JP H0564376 A JPH0564376 A JP H0564376A JP 3218512 A JP3218512 A JP 3218512A JP 21851291 A JP21851291 A JP 21851291A JP H0564376 A JPH0564376 A JP H0564376A
- Authority
- JP
- Japan
- Prior art keywords
- chargers
- power
- charger
- detected
- harmonic current
- 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
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
(57)【要約】
【目的】 バッテリに対し複数の充電器を並列に接続し
てその充電を行なうに当たり、負荷の容量に見合った必
要最低限の台数のみ運転することで効率の良い充電を可
能とし、電源容量を低減する。
【構成】 バッテリ５から直流電力を供給される負荷の
電力を検出器６により検出し、シーケンサ７にてこれに
もとづき必要最低限の台数の充電器１を選択して運転す
ることにより、電源容量の低減化を図る。また、入力側
の高調波電流を検出器３により検出し、これが所定のレ
ベルを越えたことをレベル検出器４により検出したら充
電器１を少なくとも２台組み合わせて並列運転すること
により、多相整流回路を形成し高調波電流を低減する。
(57) [Summary] [Purpose] When connecting multiple chargers to a battery in parallel and performing charging, efficient charging is possible by operating only the minimum number of units that match the load capacity. And reduce the power supply capacity. [Structure] The power of a load supplied with DC power from a battery 5 is detected by a detector 6, and a sequencer 7 selects and operates a minimum number of chargers 1 based on the detected power, thereby providing a power source capacity. To reduce. Further, the harmonic current on the input side is detected by the detector 3, and when it is detected by the level detector 4 that this exceeds a predetermined level, at least two chargers 1 are combined to operate in parallel, thereby performing multi-phase rectification. Form a circuit to reduce harmonic currents.
Description
【０００１】[0001]
【産業上の利用分野】この発明は、整流器からなり畜電
池を充電する複数の充電器を並列運転する場合の運転方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a plurality of chargers, each of which comprises a rectifier and charges a storage battery, in parallel.
【０００２】[0002]
【従来の技術】従来、この種の運転方法としては、任意
分担方式とするものや並列冗長方式とするものが一般的
である。2. Description of the Related Art Conventionally, as an operating method of this type, an arbitrary sharing method and a parallel redundancy method are generally used.
【０００３】[0003]
【発明が解決しようとする課題】そのため、負荷に対し
容量が足りかったりあるいはオーバしたりして、負荷容
量に見合った最適な運転ができないという問題がある。
また、高調波電流に対する考慮も何らなされていないと
いう問題もある。したがって、この発明の課題は負荷容
量に見合った最適な運転を可能にするとともに高調波電
流の抑制を図ることにある。Therefore, there is a problem in that the capacity is insufficient or over the load, and the optimum operation corresponding to the load capacity cannot be performed.
There is also a problem that no consideration is given to the harmonic current. Therefore, an object of the present invention is to enable optimal operation in proportion to the load capacity and to suppress harmonic current.
【０００４】[0004]
【課題を解決するための手段】かかる課題を解決するた
め、第１の発明では、整流器からなり畜電池を充電する
複数の充電器を並列運転するに当たり、前記畜電池を介
して給電される負荷の電力を検出し、その負荷電力に応
じて必要最低限の台数の充電器のみ運転し、他の充電器
は完全停止状態とすることにより、電源容量の低減を図
ることを特徴としている。また、第２の発明では、第１
の発明において、前記充電器の入力高調波電流レベルを
監視し、それが所定のレベルを越えたときは、充電器を
少なくとも２台組み合わせて多相整流器を構成し、これ
により高調波電流の低減を図ることを特徴としている。In order to solve such a problem, according to the first aspect of the present invention, when a plurality of chargers, each of which is composed of a rectifier and charges a storage battery, are operated in parallel, a load fed through the storage battery is supplied. The power supply capacity is reduced by detecting the electric power of, and operating only the minimum required number of chargers according to the load electric power, and completely stopping the other chargers. In the second invention, the first
In the invention described above, the input harmonic current level of the charger is monitored, and when it exceeds a predetermined level, at least two chargers are combined to form a polyphase rectifier, thereby reducing the harmonic current. It is characterized by
【０００５】[0005]
【作用】充電器にて充電される畜電池につながる負荷の
電力を監視し、それに見合った必要最小限の台数の充電
器を運転することにより、電源容量の低減化を図る。ま
た、入力の高調波電流レベルを監視し、これが所定のレ
ベルを越えたら充電器を少なくとも２台組み合わせて多
相整流器として運転することにより、高調波電流を低減
する。The power supply capacity is reduced by monitoring the electric power of the load connected to the storage battery charged by the charger and operating the minimum necessary number of chargers commensurate with it. Further, the harmonic current level of the input is monitored, and when it exceeds a predetermined level, at least two chargers are combined to operate as a multi-phase rectifier to reduce the harmonic current.
【０００６】[0006]
【実施例】図１にこの発明の実施例を示す。同図におい
て、１（１Ａ〜１Ｎ）は整流器からなる充電器、２Ａ，
２Ｂは変圧器（トランス）、３は高調波電流検出器、４
は高調波電流レベル検出器、５は畜電池（バッテリ）、
６は電力検出器、７はシーケンサである。ここで、充電
器１は容量のほぼ同じもの同士をペアとして運転可能な
如く、図示のようにトランス２Ａ，２Ｂの２次側に３０
度の位相差を持つように接続しておき、シーケンサ７か
らペア運転指示を与えて同時運転することにより、１２
相整流回路を形成し得るようになっている。シーケンサ
７は電力検出器６において負荷電流ｉ0 と負荷電圧ｖ0
から求めた負荷電力Ｐ0 を一定の周期をもって監視し、
この負荷電力Ｐ0 を供給するためには充電器１を必要最
低限何台投入すれば良いかを計算し、それに応じて充電
器１を選択して投入（オン）することにより負荷に応じ
た電力を供給することができる。このとき、対となる充
電器は互いに容量の等しいものを複数ペア用意しても良
く、容量の互いに異なるものを複数ペア用意するように
しても良い。FIG. 1 shows an embodiment of the present invention. In the figure, 1 (1A to 1N) is a charger composed of a rectifier, 2A,
2B is a transformer, 3 is a harmonic current detector, 4
Is a harmonic current level detector, 5 is a battery,
6 is a power detector and 7 is a sequencer. Here, the charger 1 is provided on the secondary side of the transformers 2A and 2B as shown in the figure so that the chargers 1 having almost the same capacity can be operated as a pair.
By connecting so as to have a phase difference of 10 degrees, and issuing a pair operation instruction from the sequencer 7 to operate simultaneously,
A phase rectifier circuit can be formed. The sequencer 7 has a load current i 0 and a load voltage v 0 in the power detector 6.
The load power P 0 obtained from the above is monitored at a constant cycle,
In order to supply this load power P 0 , the minimum required number of chargers 1 to be charged is calculated, and the charger 1 is selected and turned on (on) according to the calculation, so that the load can be changed. Power can be supplied. At this time, a plurality of pairs of chargers having the same capacity may be prepared, or a plurality of pairs of chargers having different capacities may be prepared.
【０００７】一方、充電器入力側の総高調波電流ΣｉH
は、ｉ3を第３高調波成分，ｉ5 を第５高調波成分，…
ｉn を第ｎ高調波成分とすると、 ΣｉH ＝（ｉ3 2 ＋ｉ5 2 ＋ｉ7 2 …＋ｉn 2 ）1/2 の如く表わされる。そこで、高調波電流検出器３により
総高調波電流ΣｉHを上式から求め、高調波電流レベル
検出器４にてこれが入力側電源により制限される或る設
定値Ｓ（自家発電設備があるときなどに、高調波電流レ
ベルが制限されることが多い）、例えば基本波の１５％
以上になったら充電器１Ａと１Ｂ、１Ｍと１Ｎの如くペ
アにして１２相整流回路を形成し、これにて運転するこ
とにより高調波電流の低減を図るようにしている。な
お、ここでは１２相整流器としたが、制御や回路構成の
複雑さを考慮しなくても良い場合は２４相，４８相整流
器とすることにより、さらに高調波電流を低減すること
が可能である。On the other hand, the total harmonic current Σi H on the charger input side
Is the i 3 third harmonic component, i 5 a fifth harmonic component, ...
When i n is the nth harmonic component, Σi H = (i 3 2 + i 5 2 + i 7 2 ... + i n 2 ) 1/2 is expressed. Therefore, the total harmonic current Σi H is obtained from the above equation by the harmonic current detector 3, and this is set by the harmonic current level detector 4 by a certain set value S (when there is private power generation equipment) In many cases, the harmonic current level is limited), for example, 15% of the fundamental wave
In the above case, the chargers 1A and 1B, 1M and 1N are paired to form a 12-phase rectifier circuit, which is operated to reduce the harmonic current. Although the 12-phase rectifier is used here, the harmonic current can be further reduced by using the 24-phase or 48-phase rectifier when it is not necessary to consider the complexity of control and circuit configuration. ..
【０００８】図２は図１の動作を説明するための波形例
である。これは、同図（ロ）に示すように時刻ｔ１でＮ
ｏ．１の充電器を投入（オン）し、同図（ハ）のように
時刻ｔ２でＮｏ．２の充電器を投入した後同図（ニ）の
如く時刻ｔ３でＮｏ．Ｎの充電器を投入し、時刻ｔ４で
はＮｏ．１の充電器をオフ、時刻ｔ５ではＮｏ．２の充
電器をオフ、時刻ｔ６ではＮｏ．Ｎの充電器をオフした
例で、そのときの電力の推移は同図（イ）に示す如くな
る。また、時刻ｔ６では高調波電流が所定のレベルを越
えたことが検出され（同図（ホ）参照）、これによって
例えばＮｏ．ＫとＮｏ．Ｌの充電器をペアとして投入し
た例を示している（同図（ヘ），（ト）参照）。FIG. 2 is a waveform example for explaining the operation of FIG. This is N at time t1 as shown in FIG.
o. The charger No. 1 is turned on (turned on), and as shown in FIG. After charging the charger of No. 2, as shown in FIG. N charger is turned on, and at time t4, No. The charger of No. 1 is turned off. No. 2 charger is turned off. In the example in which the N charger is turned off, the transition of the electric power at that time is as shown in FIG. Further, at time t6, it is detected that the harmonic current exceeds a predetermined level (see (e) in the figure). K and No. An example is shown in which L chargers are charged as a pair (see (f) and (g) in the same figure).
【０００９】[0009]
【発明の効果】この発明によれば、複数ある充電器を負
荷電力に見合うような最低限の台数で運転することがで
きるので、入力電源から見た場合に最高の変換効率にて
運転することができ、運転効率を高くし得る利点が得ら
れる。また、高調波電流も監視しこれが所定のレベルを
越えたら充電器を少なくとも２台組み合わせて１２相整
流回路を形成して運転するようにしたので、高調波電流
を低減することができ、入力側電源の省力化を図ること
が可能となる。According to the present invention, since a plurality of chargers can be operated with the minimum number of chargers commensurate with the load power, the chargers can be operated with the highest conversion efficiency when viewed from the input power source. It is possible to obtain the advantage that the operation efficiency can be increased. Further, the harmonic current is also monitored, and when it exceeds a predetermined level, at least two chargers are combined to form a 12-phase rectifier circuit to operate, so that the harmonic current can be reduced and the input side can be reduced. It becomes possible to save the power supply.
【図１】この発明の実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】図１の動作を説明するための波形図である。FIG. 2 is a waveform diagram for explaining the operation of FIG.
１ 充電器 ３ 高調波電流検出器 ４ 高調波電流レベル検出器 ５ 畜電池（バッテリ） ６ 電力検出器 ７ シーケンサ ２Ａ，２Ｂ 変圧器（トランス） 1 Charger 3 Harmonic current detector 4 Harmonic current level detector 5 Storage battery (battery) 6 Electric power detector 7 Sequencer 2A, 2B Transformer (transformer)
Claims (2)
充電器を並列運転するに当たり、 前記畜電池を介して給電される負荷の電力を検出し、そ
の負荷電力に応じて必要最低限の台数の充電器のみ運転
し、他の充電器は完全停止状態とすることにより、電源
容量の低減を図ることを特徴とする充電器の並列運転方
法。1. When operating a plurality of chargers, each of which is composed of a rectifier and charges a storage battery, in parallel, the electric power of a load supplied through the storage battery is detected, and the minimum number of units required according to the detected load electric power. The parallel operation method of the chargers is characterized in that the power source capacity is reduced by operating only the chargers of 1 and leaving other chargers completely stopped.
視し、それが所定のレベルを越えたときは、充電器を少
なくとも２台組み合わせて多相整流器を構成し、これに
より高調波電流の低減を図ることを特徴とする請求項１
に記載の充電器の並列運転方法。2. The input harmonic current level of the charger is monitored, and when it exceeds a predetermined level, at least two chargers are combined to form a polyphase rectifier. Claim 1 which aims at reduction.
The parallel operation method of the charger described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3218512A JPH0564376A (en) | 1991-08-29 | 1991-08-29 | Parallel operation method of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3218512A JPH0564376A (en) | 1991-08-29 | 1991-08-29 | Parallel operation method of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0564376A true JPH0564376A (en) | 1993-03-12 |
Family
ID=16721091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3218512A Pending JPH0564376A (en) | 1991-08-29 | 1991-08-29 | Parallel operation method of charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0564376A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251619A3 (en) * | 2001-04-18 | 2004-04-07 | Makita Corporation | Methods and apparatus for managing a plurality of charging devices via a network |
| EP1717926A2 (en) * | 2005-04-29 | 2006-11-02 | BLACK & DECKER INC. | Battery charger |
| JP2008187865A (en) * | 2007-01-31 | 2008-08-14 | Nagano Japan Radio Co | Charger |
| JP2009509489A (en) * | 2005-09-23 | 2009-03-05 | シーメンス アクチエンゲゼルシヤフト | Device for redundant power supply of at least one load |
| JP2010526524A (en) * | 2007-04-24 | 2010-07-29 | アンドラーシュ・ファザカシュ | Circuit configuration for parallel operation of chargers |
| JP2011176959A (en) * | 2010-02-25 | 2011-09-08 | Asti Corp | Charging device and charging method |
| JP2012029480A (en) * | 2010-07-23 | 2012-02-09 | Chugoku Electric Power Co Inc:The | Charger and charging method |
| CN102372197A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Elevator control device |
| WO2012086825A1 (en) * | 2010-12-21 | 2012-06-28 | 日本電気株式会社 | Charging device and charging method |
| JP2014003889A (en) * | 2012-06-19 | 2014-01-09 | Samsung Electronics Co Ltd | Battery charging method of electronic device and electronic device |
| US8819470B2 (en) | 2010-11-09 | 2014-08-26 | Nec Corporation | Switching device, a switching device control method and a switching device control program |
| KR101442901B1 (en) * | 2012-04-24 | 2014-09-23 | 엘에스산전 주식회사 | Charging system for electronic vehicle and method for removing harmonic thereof |
-
1991
- 1991-08-29 JP JP3218512A patent/JPH0564376A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251619A3 (en) * | 2001-04-18 | 2004-04-07 | Makita Corporation | Methods and apparatus for managing a plurality of charging devices via a network |
| EP1717926A2 (en) * | 2005-04-29 | 2006-11-02 | BLACK & DECKER INC. | Battery charger |
| JP2006311798A (en) * | 2005-04-29 | 2006-11-09 | Black & Decker Inc | Battery charger |
| JP2009509489A (en) * | 2005-09-23 | 2009-03-05 | シーメンス アクチエンゲゼルシヤフト | Device for redundant power supply of at least one load |
| JP2008187865A (en) * | 2007-01-31 | 2008-08-14 | Nagano Japan Radio Co | Charger |
| JP2010526524A (en) * | 2007-04-24 | 2010-07-29 | アンドラーシュ・ファザカシュ | Circuit configuration for parallel operation of chargers |
| JP2011176959A (en) * | 2010-02-25 | 2011-09-08 | Asti Corp | Charging device and charging method |
| JP2012029480A (en) * | 2010-07-23 | 2012-02-09 | Chugoku Electric Power Co Inc:The | Charger and charging method |
| CN102372197A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Elevator control device |
| US8819470B2 (en) | 2010-11-09 | 2014-08-26 | Nec Corporation | Switching device, a switching device control method and a switching device control program |
| WO2012086825A1 (en) * | 2010-12-21 | 2012-06-28 | 日本電気株式会社 | Charging device and charging method |
| KR101442901B1 (en) * | 2012-04-24 | 2014-09-23 | 엘에스산전 주식회사 | Charging system for electronic vehicle and method for removing harmonic thereof |
| JP2014003889A (en) * | 2012-06-19 | 2014-01-09 | Samsung Electronics Co Ltd | Battery charging method of electronic device and electronic device |
| US9787130B2 (en) | 2012-06-19 | 2017-10-10 | Samsung Electronics Co., Ltd. | Battery charging method and electronic device |
| US10374450B2 (en) | 2012-06-19 | 2019-08-06 | Samsung Electronics Co., Ltd. | Battery charging method and electronic device |
| US11368039B2 (en) | 2012-06-19 | 2022-06-21 | Samsung Electronics Co., Ltd. | Battery charging method and electronic device |
| US12189445B2 (en) | 2012-06-19 | 2025-01-07 | Samsung Electronics Co., Ltd. | Battery charging method and electronic device |
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