JPH0417520A - Parallel operation power supply controller - Google Patents
Parallel operation power supply controllerInfo
- Publication number
- JPH0417520A JPH0417520A JP2120719A JP12071990A JPH0417520A JP H0417520 A JPH0417520 A JP H0417520A JP 2120719 A JP2120719 A JP 2120719A JP 12071990 A JP12071990 A JP 12071990A JP H0417520 A JPH0417520 A JP H0417520A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- current
- power
- abnormality
- signal
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000005856 abnormality Effects 0.000 claims description 49
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 238000003079 width control Methods 0.000 description 7
- 230000007812 deficiency Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000006735 deficit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Direct Current Feeding And Distribution (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は並列運転電源制御装置に関し、特に複数の安定
化電源から共通の負荷に対して電源を供給するようにし
た電源システムにおける並列運転電源制御装置に関する
ものである。[Detailed Description of the Invention] Technical Field The present invention relates to a parallel operation power supply control device, and more particularly to a parallel operation power supply control device in a power supply system in which power is supplied to a common load from a plurality of stabilized power sources. be.
従来技術
従来のこの種の電源制御装置では、並列運転される各々
の電源に対して、定格出力電流付近に動作点を有する出
力電圧垂下回路を設けている。この出力電圧垂下回路は
一つの電源に負荷電流が集中しようとすると、定格出力
電流付近で出力電圧が低下し始めるようになっており、
よってそれ以上の電流の増加を防止する機能を有する。Prior Art In a conventional power supply control device of this type, an output voltage drooping circuit having an operating point near the rated output current is provided for each power supply operated in parallel. This output voltage drop circuit is designed so that when the load current is concentrated on one power supply, the output voltage begins to drop near the rated output current.
Therefore, it has a function of preventing further increase in current.
この様な出力電圧垂下回路を有する電源の並列運転制御
方式では、並列運転される各々の電源の出力電流は平衡
していないのが普通であり、一部の電源に対して常に大
きな電流が流れて大きな負荷が加わっていることがある
。In the parallel operation control method of power supplies having such an output voltage droop circuit, the output currents of each power supply operated in parallel are usually not balanced, and a large current always flows to some power supplies. Sometimes a large load is applied.
この様な状態で、外来ノイズ等が混入すると、大きな負
荷か加わっている電源において電流の異常発生か検出さ
れ、その電源の運転停止を招来することになる。その結
果、残余の電源にて負荷への電流供給が続行され、運転
停止中の電源は正常にもかかわらず、以降運転を停止し
て運用効率が悪くなるという欠点がある。In such a state, if external noise or the like gets mixed in, an abnormality in current will be detected in the power supply to which a large load is applied, and the operation of the power supply will be stopped. As a result, the remaining power source continues to supply current to the load, and even though the power source is operating normally, the power source stops operating thereafter, resulting in poor operational efficiency.
発明の目的
そこで、本発明はかかる従来技術の欠点を除去すべくな
されたものであって、その目的とするところは、運用効
率を向上可能な並列運転電源制御装置を提供することに
ある。OBJECT OF THE INVENTION Therefore, the present invention has been made to eliminate the drawbacks of the prior art, and its purpose is to provide a parallel operation power supply control device that can improve operational efficiency.
発明の構成
本発明によれば、電流異常を検出する電流異常検出回路
と、この電流異常の検出に応答して電源の切断をなす投
入切断制御回路とを、各々が有する複数の安定化電源に
より、共通負荷に並列に安定化電源出力を供給するよう
構成された並列運転電源制御システムであって、前記安
定化電源の少なくとも１つの電流異常検出回路による電
流異常の検出に応答して、前記電流異常検出回路に対し
てリセット信号を発生する手段を設け、このリセット動
作により電流異常か検出された安定化電源の投入をなす
ようにしたことを特徴とする並列運転電源制御装置が得
られる。Structure of the Invention According to the present invention, a plurality of stabilized power supplies each having a current abnormality detection circuit that detects a current abnormality and a power supply/disconnection control circuit that turns off the power supply in response to the detection of the current abnormality. , a parallel operation power supply control system configured to supply a regulated power supply output in parallel to a common load, the current output being controlled in response to detection of a current abnormality by at least one current abnormality detection circuit of the regulated power supply; There is obtained a parallel operation power supply control device characterized in that means is provided for generating a reset signal to the abnormality detection circuit, and the reset operation turns on the stabilized power supply in which a current abnormality has been detected.
実施例
次に、本発明の実施例を図面を参照して詳細に説明する
。Embodiments Next, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の実施例のシステムブロック図である。FIG. 1 is a system block diagram of an embodiment of the present invention.
本実施例は複数のスイッチング電源２・１〜２・Ｎとこ
れ等電源を制御する制御部１とからなる。制御部１は、
電源２・１〜２・Ｎの各出力が並列接続された安定化出
力端子４１がらの電圧がフィードバックされており、出
力安定化制御信号４２を各々の電源へ送信する。The present embodiment includes a plurality of switching power supplies 2.1 to 2.N and a control section 1 that controls these power supplies. The control unit 1 is
A voltage from a stabilized output terminal 41 to which the outputs of the power supplies 2.1 to 2.N are connected in parallel is fed back, and an output stabilization control signal 42 is transmitted to each power source.
制御部１は各々の電源に対して投入／切断信号４３を送
信し、安定化出力の投入／切断を指示する。更に、制御
部１は各々の電源から電圧異常信号４６・１〜４６・Ｎ
及び電流異常信号４５・１〜４５・Ｎを入力し、電圧異
常信号により電圧異常の発生を検出した場合、投入／切
断信号４３により安定化出力の切断を指示する。The control unit 1 transmits an on/off signal 43 to each power supply, instructing to turn on/off the stabilized output. Furthermore, the control unit 1 receives voltage abnormality signals 46.1 to 46.N from each power source.
and current abnormality signals 45.1 to 45.N are input, and when the occurrence of voltage abnormality is detected by the voltage abnormality signal, an instruction is given to disconnect the stabilizing output by the on/off signal 43.
制御部１が電流異常信号により電流異常を検出した場合
においては、複数の電源のうち、電流異常信号を送信し
ている電源の台数を計測し、例えば１台の電源のみが電
流異常である場合は、正常な電源のみによる並列運転を
行なうために、投入／切断信号４３により安定化出力の
投入を継続する指示を行ない、複数の電源が電流異常に
ある場合は、投入／切断信号４３により安定化出力の切
断を指示する。When the control unit 1 detects a current abnormality based on a current abnormality signal, it measures the number of power supplies that are transmitting the current abnormality signal among the plurality of power supplies.For example, if only one power supply has a current abnormality, In order to perform parallel operation using only normal power supplies, the on/off signal 43 instructs to continue turning on the stabilized output, and if multiple power supplies have abnormal currents, the on/off signal 43 causes the stabilization to continue. Instructs to disconnect the converted output.
制御部１は投入／切断信号４３により複数の電源に対し
て安定化出力の投入を指示するに先立って、リセット信
号４４を各々の電源へ送信する。Before the control unit 1 instructs the plurality of power supplies to turn on the stabilized output using the turn-on/cut-off signal 43, it transmits a reset signal 44 to each power source.
各々の電源はこのリセット信号４４を受信すると異常検
出回路のラッチをリセットする。When each power supply receives this reset signal 44, it resets the latch of the abnormality detection circuit.
また、本実施例の並列運転電源装置では、制御部１が電
源に対して安定化出力の投入を指示してから、最初に、
複数の電源のうち１台の電源のみが電流異常を発生した
場合においてのみ、制御部１はリセット信号４４を各々
の電源へ送信し、制御部１が電源に対して安定化出力の
投入を指示してから、２回以上の電流異常発生において
は、リセット信号４４の送信は行なわないという機能を
設けている。In addition, in the parallel operation power supply device of this embodiment, after the control unit 1 instructs the power supply to turn on the stabilized output, first,
Only when a current abnormality occurs in only one power supply among the plurality of power supplies, the control unit 1 sends a reset signal 44 to each power supply, and the control unit 1 instructs the power supply to turn on the stabilized output. After that, a function is provided in which the reset signal 44 is not transmitted if a current abnormality occurs twice or more.
このことは、１回のみの電流異常発生はノイスによる間
欠的な単発的障害であり、２回以上の電流異常発生は定
常的な障害と考えられるからである。This is because the occurrence of current abnormality only once is considered to be an intermittent single failure due to noise, and the occurrence of current abnormality twice or more is considered to be a constant failure.
電源２・１〜２・Ｎは安定仕出ゝ力が全て並列接続され
て図示せぬ共通負荷へ電源供給を行っている。また、各
々の電源は同等の機能を各々が有しているので、電源２
・１を代表として説明する。The stable output power of the power supplies 2.1 to 2.N are all connected in parallel to supply power to a common load (not shown). In addition, since each power supply has the same function, power supply 2
・I will explain using 1 as a representative.
電源２・１は電流帰還回路１１と、ＤＣ−ＤＣコンバー
タ回路１２と、パルス幅制御回路１３と、投入／切断制
御回路１４と、過不足電流検出回路１５と、過不足電圧
検出回路１６とから構成されている。The power supply 2 1 includes a current feedback circuit 11 , a DC-DC converter circuit 12 , a pulse width control circuit 13 , an on/off control circuit 14 , an over/under current detection circuit 15 , and an over/under voltage detection circuit 16 It is configured.
投入／切断制御回路１４は制御部１からの投入／切断信
号４３を受信すると、パルス幅制御回路１３へ制御の開
始／停止を指示する。また、投入／切断制御回路１４は
過不足電流検出回路または過不足電圧検出回路からの異
常発生信号を受信すると、パルス幅制御回路１３へ制御
の停止を指示する。但し、異常発生信号か解除された場
合（よ、再び制御の開始を指示する。When the closing/cutting control circuit 14 receives the closing/cutting signal 43 from the control unit 1, it instructs the pulse width control circuit 13 to start/stop control. Further, when the closing/cutting control circuit 14 receives an abnormality occurrence signal from the excess/shortage current detection circuit or the excess/shortage voltage detection circuit, it instructs the pulse width control circuit 13 to stop control. However, if the abnormality signal is canceled, the control will be started again.
パルス幅制御回路１３は投入／切断制御回路１４から制
御の開始を指示されると、制御部１カ・らの出力安定化
制御信号４２を受信し、ＤＣ−ＤＣコンバータ回路１２
のスイ・ソチング素子を駆動するためのスイッチング信
号を出力し、また投入／切断制御回路１４から制御の停
止を指示されると、ＤＣ−ＤＣコンバータ回路１２のス
イ・ノチンク゛素子を駆動するためのスイ・ソチング信
号の出力を停止する。When the pulse width control circuit 13 is instructed to start control by the closing/cutting control circuit 14, it receives the output stabilization control signal 42 from the control section 1 and controls the DC-DC converter circuit 12.
It outputs a switching signal for driving the switching element of the DC-DC converter circuit 12, and when instructed to stop the control from the closing/cutting control circuit 14, outputs a switching signal for driving the switching element of the DC-DC converter circuit 12.・Stop outputting the soching signal.
さらに、パルス幅制御回路１３は、電流帰還回路１１か
らＤＣ−ＤＣコンノ＼−夕回路１２力・出力している電
流の大きさを入力し、定格電流を越える電流を出力して
いる場合には、安定仕出）ｊの電圧を下げて、出力電流
か定格値を越えな０よう（こ作用する（出力電圧垂下制
御）。Furthermore, the pulse width control circuit 13 inputs the magnitude of the output current from the current feedback circuit 11 to the DC-DC converter circuit 12, and if the current output exceeds the rated current, , stable output) by lowering the voltage of j to prevent the output current from exceeding the rated value.
ＤＣ−ＤＣコンノ・−夕回路１２は非安定電圧を人力し
、パルス幅制御回路１３からのスイ・ソチング信号によ
り安定化電圧を出力する。電流帰還回路１１はＤＣ−Ｄ
Ｃコンバータ回路１２が出力している電流値を電圧値に
変換し、パルス幅制御回路１３及び過不足電流検出回路
１５に送信する。The DC-DC converter circuit 12 inputs an unstabilized voltage and outputs a stabilized voltage according to the switching signal from the pulse width control circuit 13. The current feedback circuit 11 is DC-D
The current value output by the C converter circuit 12 is converted into a voltage value and transmitted to the pulse width control circuit 13 and the excess/deficiency current detection circuit 15.
過不足電流検出回路］５は電流帰還回路１］から出力電
流の大きさを入力し、過不足電流の発生を検出すると、
電流異常信号を投入／切断制御回路１４及び制御部１へ
送信する。また、過不足電流検出回路１５は制御部１か
らリセット信号４４を受信すると、電流異常信号の送信
を停止する。Excess/deficit current detection circuit] 5 inputs the magnitude of the output current from the current feedback circuit 1 and detects the occurrence of excess/deficit current.
A current abnormality signal is transmitted to the on/off control circuit 14 and the control section 1. Further, upon receiving the reset signal 44 from the control unit 1, the excess/deficiency current detection circuit 15 stops transmitting the current abnormality signal.
但し、再び過不足電流を検出した場合は再度電流異常信
号の送信を行なう。However, if excess or insufficient current is detected again, the current abnormality signal is transmitted again.
過不足電圧検出回路１６はＤＣ−ＤＣコンノ・夕回路１
２の安定化出力電圧を入力し、過不足電圧の発生を検出
すると、電圧異常信号を投入／切断制御回路１４及び°
制御部１へ送信する。また、過不足電圧検出回路］５は
制御部］からリセット信号４４を受信すると、電圧異常
信号の送信を停止する。但し、再び過不足電圧を検出し
た場合は、再度電圧異常信号の送信を行なう。The over/under voltage detection circuit 16 is the DC-DC converter circuit 1
When the stabilized output voltage of 2 is input and the occurrence of over/under voltage is detected, a voltage abnormality signal is sent to the input/disconnection control circuit 14 and
Send to control unit 1. Moreover, when the excess/deficiency voltage detection circuit 5 receives a reset signal 44 from the control section, it stops transmitting the voltage abnormality signal. However, if excess or insufficient voltage is detected again, the voltage abnormality signal is transmitted again.
通常、過不足電流検出回路１５は、定格電流の大きさを
基準値として、この基準値と電源の出力電流の大きさと
の比較動作において、ノ々ルス幅制御回路１３の電流帰
還による制御か正常に動作しない場合や、負荷の異常に
より制御可能範囲を越えた場合に、過不足電流を発生す
ることにより電流異常信号を送信する。Normally, the excess/deficiency current detection circuit 15 uses the magnitude of the rated current as a reference value, and in the comparison operation between this reference value and the magnitude of the output current of the power supply, the current feedback control circuit 13 determines whether the control is normal or not. When the controllable range is exceeded due to abnormality in the load, a current abnormality signal is sent by generating excess or insufficient current.
一般的に、これらを原因とする電流異常の発生において
は、電源の再投入においても、再び電流異常を発生する
。しかし、並列接続されるそれぞれの電源の出力電流は
殆ど平衡していな０ため（こ、普通は一部の電源に対し
て常に大きな電流が流れて大きな負荷が加わり、外来ノ
イズ等の混入においては電流の異常発生として誤検出し
、電源装置は電源異常を検出した電源以外の電源によっ
て冗長運転を開始することかある。この場合は、電源の
再投入指示を行なうと、電源は冗長運転から通常運転へ
切換わり、正常に安定化電圧を出力する。Generally, when a current abnormality occurs due to these causes, the current abnormality occurs again even when the power is turned on again. However, since the output currents of the respective power supplies connected in parallel are hardly balanced (normally, a large current always flows to some power supplies and a large load is applied, and external noise etc. The power supply may falsely detect the occurrence of a current abnormality and start redundant operation using a power source other than the power source where the power abnormality was detected.In this case, when the power is turned on again, the power supply will switch from redundant operation to normal operation. Switches to operation and outputs stabilized voltage normally.
したがって、この誤検出を防止するために、電源の投入
指示を行ってから、最初に発生する電流異常の際には、
電流異常を発生している電源力・１台の場合にのみ、制
御部１かリセット信号４４を送信する。電源かりセント
信号を受信すると、電流異常を発生している電源は再投
入を行ない、］台の電源の電流異常により冗長運転とな
っている電源装置を、通常運転に切換えることかできる
のである。Therefore, in order to prevent this false detection, when a current abnormality occurs for the first time after issuing a power-on instruction,
The control unit 1 transmits the reset signal 44 only when only one power supply unit is experiencing a current abnormality. When a power supply signal is received, the power supply that is causing the current abnormality is turned on again, and the power supply unit that is in redundant operation due to the current abnormality in the power supply can be switched to normal operation.
尚、上記実施例では、１台の電源において電流異常か検
出された場合にのみ、リセット信号を発生してその過・
不足電流検出回路のラッチを解除し、再び全電源の並列
運転を行うよう制御しているが、１台の電源の電源異常
にみならず、２〜３台の電源に電流異常が検出された場
合にも、上記と同様な制御を行っても良いことは勿論で
ある。In the above embodiment, a reset signal is generated only when a current abnormality is detected in one power supply, and the abnormality is detected.
The latch of the undercurrent detection circuit was released and all power supplies were controlled to operate in parallel again, but a current abnormality was detected not only in one power supply but also in two or three power supplies. Of course, the same control as above may be performed in other cases as well.
発明の効果
斜上の如く、本発明によれば、制御部が電源に対して電
源投入指示を実行してから最初に少くとも１台の電源の
出力に電流異常か検出されたときにのみ、その電源異常
検出回路にリセットをかけて、再並列運転指示を与える
ようにしたので、各電源の出力電流のバランスか外来ノ
イス等により大きく崩れて単発的に電流異常となっても
、再度通常の並列運転に早急に復帰可能となるという効
果がある。Effects of the Invention As described above, according to the present invention, only when a current abnormality is detected in the output of at least one power supply after the control unit issues a power-on instruction to the power supply, Since the power supply abnormality detection circuit is reset and a re-parallel operation instruction is given, even if the balance of the output current of each power supply is greatly disturbed due to external noise etc. and a current abnormality occurs, the normal operation will be resumed. This has the effect of quickly returning to parallel operation.
図は本発明の実施例のシステムブロック図である。 主要部分の符号の説明 １・・・・・・制御部 ２・１〜２・Ｎ・・・・・・電源 １４・・・・・・投入／切断制御回路 The figure is a system block diagram of an embodiment of the present invention. Explanation of symbols of main parts 1...Control unit 2.1~2.N・・・Power supply 14... Closing/cutting control circuit
Claims (1)
流異常の検出に応答して電源の切断をなす投入切断制御
回路とを、各々が有する複数の安定化電源により、共通
負荷に並列に安定化電源出力を供給するよう構成された
並列運転電源制御システムであって、前記安定化電源の
少なくとも１つの電流異常検出回路による電流異常の検
出に応答して、前記電流異常検出回路に対してリセット
信号を発生する手段を設け、このリセット動作により電
流異常が検出された安定化電源の投入をなすようにした
ことを特徴とする並列運転電源制御装置。(1) A current abnormality detection circuit that detects a current abnormality and a power-on/disconnect control circuit that turns off the power supply in response to the detection of this current abnormality are connected in parallel to a common load by multiple stabilized power supplies, each of which has its own. A parallel operating power supply control system configured to provide a regulated power supply output, the system comprising: in response to detection of a current anomaly by at least one current anomaly detection circuit of the regulated power supply; 1. A parallel operation power supply control device, comprising means for generating a reset signal, and the reset operation turns on a stabilized power supply in which a current abnormality has been detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2120719A JP2614932B2 (en) | 1990-05-10 | 1990-05-10 | Parallel operation power supply controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2120719A JP2614932B2 (en) | 1990-05-10 | 1990-05-10 | Parallel operation power supply controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0417520A true JPH0417520A (en) | 1992-01-22 |
| JP2614932B2 JP2614932B2 (en) | 1997-05-28 |
Family
ID=14793308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2120719A Expired - Fee Related JP2614932B2 (en) | 1990-05-10 | 1990-05-10 | Parallel operation power supply controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2614932B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05252657A (en) * | 1992-03-04 | 1993-09-28 | Koufu Nippon Denki Kk | Power supply control system |
| DE10255110B4 (en) * | 2001-12-03 | 2006-08-10 | Murata Mfg. Co., Ltd., Nagaokakyo | Switching power supply unit |
| JP2008079447A (en) * | 2006-09-22 | 2008-04-03 | Toyota Motor Corp | Multiphase voltage conversion device and control method of vehicle and multiphase voltage conversion device |
| JP2022525073A (en) * | 2019-03-26 | 2022-05-11 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Phase Redundant voltage regulator reassignment of regulator phase within the device |
| JP2022525072A (en) * | 2019-03-26 | 2022-05-11 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Phase Redundant Voltage Regulator Phase Redundant Regulator Phase Sharing within the Device |
-
1990
- 1990-05-10 JP JP2120719A patent/JP2614932B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05252657A (en) * | 1992-03-04 | 1993-09-28 | Koufu Nippon Denki Kk | Power supply control system |
| DE10255110B4 (en) * | 2001-12-03 | 2006-08-10 | Murata Mfg. Co., Ltd., Nagaokakyo | Switching power supply unit |
| US7113379B2 (en) | 2001-12-03 | 2006-09-26 | Murata Manufacturing Co., Ltd. | DC-DC converter |
| JP2008079447A (en) * | 2006-09-22 | 2008-04-03 | Toyota Motor Corp | Multiphase voltage conversion device and control method of vehicle and multiphase voltage conversion device |
| JP2022525073A (en) * | 2019-03-26 | 2022-05-11 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Phase Redundant voltage regulator reassignment of regulator phase within the device |
| JP2022525072A (en) * | 2019-03-26 | 2022-05-11 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Phase Redundant Voltage Regulator Phase Redundant Regulator Phase Sharing within the Device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2614932B2 (en) | 1997-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |