JPH10201090A - Power unit - Google Patents
Power unitInfo
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- JPH10201090A JPH10201090A JP8350388A JP35038896A JPH10201090A JP H10201090 A JPH10201090 A JP H10201090A JP 8350388 A JP8350388 A JP 8350388A JP 35038896 A JP35038896 A JP 35038896A JP H10201090 A JPH10201090 A JP H10201090A
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- Prior art keywords
- power supply
- power
- units
- unit
- supply device
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は，電源装置に関し，
詳しくは，電源内蔵型外付磁気ディスク装置に用いられ
る電源装置に関する。TECHNICAL FIELD The present invention relates to a power supply device,
More specifically, the present invention relates to a power supply device used for an external magnetic disk drive with a built-in power supply.
【０００２】[0002]
【従来の技術】パーソナルコンピュータ等に接続される
記憶装置で，磁気ディスクドライブを１台又は複数台搭
載し，数１０ＭＢから数１０ＧＢほどのデータを記憶す
る装置が知られている。この記憶装置に搭載される磁気
ディスクドライブは，装置内の電源から電源供給される
のが一般的であり，その負荷電流は，磁気ディスクドラ
イブの構成品にスピンドルモータがあることから，電源
投入時やアクセス時に大きく変動することが知られてい
る。2. Description of the Related Art A storage device connected to a personal computer or the like, which mounts one or more magnetic disk drives and stores data of several tens MB to several tens GB, is known. The magnetic disk drive mounted on this storage device is generally supplied with power from the power supply inside the device, and the load current is increased when the power is turned on because the spindle motor is a component of the magnetic disk drive. And it is known that it fluctuates greatly at the time of access.
【０００３】この種の電源装置としては，特開昭６１−
３９８２６号公報（以下，従来技術１と呼ぶ）に開示さ
れたものがある。図４は従来技術１に示された電源装置
を示すブロック図である。図４に示すように，電源装置
５０は，並列接続した複数の電源ユニット（ＰＷＲ１〜
ｎ）５１−１，５１−２，５１−３，５１−４，…，５
１−ｎ（以下，任意の場合を符号５１で示す）の出力電
流の総和を検出する総出力電流検出部（ＰＣ）５２と，
その総出力電流検出部５２の検出した総出力電流に基づ
いて，各電源ユニット５１の最大許容電流を各電源ユニ
ット５１に指令する共通電源制御部（ＣＣＴＬ）５３と
を備えるとともに，各電源ユニット５１に前記指令に基
づいて出力電流を制御する手段を有する。ここで，符号
５３は負荷（ＬＯＡＤ）である。A power supply of this type is disclosed in
There is one disclosed in Japanese Patent Publication No. 39826 (hereinafter, referred to as prior art 1). FIG. 4 is a block diagram showing the power supply device shown in the prior art 1. As shown in FIG. 4, the power supply device 50 includes a plurality of power supply units (PWR1 to PWR1) connected in parallel.
n) 51-1, 51-2, 51-3, 51-4, ..., 5
1-n (hereinafter, an arbitrary case is denoted by reference numeral 51); a total output current detection unit (PC) 52 for detecting a total of output currents;
A common power supply control unit (CCTL) 53 for instructing each power supply unit 51 of the maximum allowable current of each power supply unit 51 based on the total output current detected by the total output current detection unit 52; And means for controlling the output current based on the command. Here, reference numeral 53 denotes a load (LOAD).
【０００４】このような構成の従来技術１の電源装置５
０においては，並列接続された複数の電源ユニット５１
の出力電流の総和を検出し，その検出した総出力電流
を，各電源ユニット５１の最大許容出力電流に比例し
て，各電源ユニット５１に分担させるように制御してい
る。[0004] The power supply device 5 of the prior art 1 having such a configuration is described.
0, a plurality of power supply units 51 connected in parallel
Are controlled so that each power supply unit 51 shares the detected total output current in proportion to the maximum allowable output current of each power supply unit 51.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術１におい
て，並列接続された複数の電源ユニットに対して，個々
の電源ユニットの最大出力電流に比例して電流の出力を
分担させることは，電源の寿命を延ばし，負荷電流によ
って出力電圧が変動するのを防ぐことができる。In the above-mentioned prior art 1, in order to share the current output in proportion to the maximum output current of each power supply unit to a plurality of power supply units connected in parallel, The life can be extended and the output voltage can be prevented from fluctuating due to the load current.
【０００６】しかしながら，現在，中小規模の磁気ディ
スク装置に多く用いられているスイッチング電源は，そ
の定格出力よりも小さく成ればなるほど変換効率が極端
に悪くなるという性質を持っている。[0006] However, switching power supplies, which are often used in small and medium-sized magnetic disk devices at present, have the property that the conversion efficiency becomes extremely poor as the output becomes smaller than the rated output.
【０００７】さきごろ施行された省エネ法に鑑みても，
効率を落としてまで寿命を延ばすよりも，高信頼性の部
品を選定した上で，定格近辺の高効率状態において使用
すべきである。[0007] In view of the energy saving law that was enforced recently,
Rather than extending the service life until the efficiency is reduced, high reliability components should be selected and used in a high efficiency state near the rating.
【０００８】例えば，ひとつの電源付筐体で磁気ディス
クドライブを数台から数十台まで任意に増設できるディ
スクアレイ装置などにおいては，搭載可能な最大の磁気
ディスクドライブ数が搭載された場合を想定し，電源の
定格出力を設定し，電源を設計する。[0008] For example, in a disk array device or the like in which one to several magnetic disk drives can be arbitrarily added in a single power-supplied housing, it is assumed that the maximum number of magnetic disk drives that can be mounted is mounted. Then, set the rated output of the power supply and design the power supply.
【０００９】したがって，搭載される磁気ディスクドラ
イブ数が少ない場合の効率は，非常に悪くなっていた。
例えば，磁気ディスク用ドライブに用いられているスピ
ンドルモータは，その起動時において，平常通電時の３
倍近くの電流を必要とする。１台の電源で供給する場合
には，この駆動時におけるピーク電流に安全マージンを
付加した値を定格として設計しているが，通常時におい
ては，その定格の約３分の１程度しか出力しておらず，
非常に効率の悪い状態での使用となっている。Therefore, the efficiency when the number of mounted magnetic disk drives is small is very poor.
For example, a spindle motor used in a magnetic disk drive is designed to operate at a normal energization time.
Requires nearly twice the current. When a single power supply is used, the rated value is a value obtained by adding a safety margin to the peak current at the time of this drive, but in normal times, only about one third of the rated value is output. Not
It is used in a very inefficient state.
【００１０】そこで，本発明の一般的な技術的課題は，
負荷変動に関わらず比較的高効率で電力を供給するため
に，複数の低定格電源ユニットを並列接続し，負荷変動
に応じて電力を供給する電源ユニットの数を増減させよ
うと制御し，個々の電源ユニットが定格出力に近い状態
で使用できる電源装置を提供することにある。Therefore, a general technical problem of the present invention is to
In order to supply power with relatively high efficiency regardless of load fluctuations, multiple low-rated power supply units are connected in parallel, and control is performed to increase or decrease the number of power supply units that supply power according to load fluctuations. It is an object of the present invention to provide a power supply device in which the power supply unit can be used near a rated output.
【００１１】本発明の具体的な技術的課題は，出力負荷
電流の小さいときにおける電流のＡＣ／ＤＣ変換効率を
改善することにある。A specific technical object of the present invention is to improve the current AC / DC conversion efficiency when the output load current is small.
【００１２】[0012]
【課題を解決するための手段】本発明によれば，並列接
続された小さい容量の電源ユニットと電源制御部とを備
え，前記電源制御部は，出力する電源ユニットの数を出
力負荷電流に応じて制御することを特徴とする電源装置
が得られる。According to the present invention, a power supply unit having a small capacity and a power supply control unit connected in parallel are provided, and the power supply control unit changes the number of power supply units to be output according to an output load current. A power supply device characterized in that it is controlled by
【００１３】また，本発明によれば，前記電源装置にお
いて，前記電源制御部は，総負荷電流を監視し，予め設
定した互いに異なるレベルの複数のスレッショルド電流
値を越えた場合に，稼動する電源ユニットの数を増や
し，下回った場合，その数を減らすように制御すること
を特徴とする電源装置が得られる。According to the present invention, in the power supply device, the power supply control unit monitors a total load current, and operates when a plurality of threshold current values of different levels set in advance are exceeded. A power supply device characterized in that the number of units is increased and, when the number falls below, control is performed to reduce the number.
【００１４】また，本発明によれば，前記いずれかの電
源装置において，前記電源制御部は，負荷に流れる当該
電源装置の総電流値を検出し，総電流値を示すアナログ
信号を出力する検電流器と，検出された総電流値のアナ
ログ信号をデジタル信号に変換するＡ／Ｄ変換器と，こ
のデジタル信号の示す総電流値と個々の電源ユニットの
定格電流値を基に，必要とされる前記複数の電源ユニッ
トの稼働台数を算出しコントロール信号を出力するデー
タ処理部と，前記コントロール信号に基づいて，前記複
数の電源ユニットをＯＮ／ＯＦＦさせるスイッチング制
御部とを備えていることを特徴とする電源装置が得られ
る。According to the invention, in any one of the power supply devices, the power supply control unit detects a total current value of the power supply device flowing to the load and outputs an analog signal indicating the total current value. An ammeter, an A / D converter for converting an analog signal of the detected total current value into a digital signal, and a required current based on the total current value indicated by the digital signal and the rated current value of each power supply unit. A data processing unit for calculating the operating number of the plurality of power supply units and outputting a control signal; and a switching control unit for turning on / off the plurality of power supply units based on the control signal. Is obtained.
【００１５】また，本発明によれば，前記電源装置にお
いて，前記データ処理部は，前記複数の電源ユニットの
夫々の稼働率が平均化するように，当該稼働する電源ユ
ニットを任意の時間単位で切替えながら選択するように
前記コントロール信号を出力することを特徴とする電源
装置が得られる。Further, according to the present invention, in the power supply device, the data processing unit controls the operating power supply units in arbitrary time units such that the operation rates of the plurality of power supply units are averaged. A power supply device is provided which outputs the control signal so as to make a selection while switching.
【００１６】さらに，本発明によれば，前記いずれかの
電源装置と当該電源装置によって駆動される少なくとも
１台の磁気ディスクドライブとを備えていることを特徴
とする補助記憶装置が得られる。Further, according to the present invention, there is provided an auxiliary storage device characterized by comprising any one of the power supply devices and at least one magnetic disk drive driven by the power supply device.
【００１７】[0017]
【発明の実施の形態】以下，本発明の実施の形態につい
て説明する。Embodiments of the present invention will be described below.
【００１８】図１は本発明の実施の形態による電源装置
の構成図である。図１に示すように，電源装置は，交流
電源入力端子１に，夫々並列に接続された電源ユニット
（ＰＳｌ，ＰＳ２，ＰＳ３，…，ＰＳｎ）２−１，２−
２，２−３，…，２−ｎ（以下，任意の場合は単に符号
２で示す）と，これら夫々の電源ユニット２に接続され
た電源制御部（ＰＳＣＴＬ）３とを備えている。尚，符
号４は電源装置に接続された負荷（ＬＯＡＤ）を示して
いる。FIG. 1 is a configuration diagram of a power supply device according to an embodiment of the present invention. As shown in FIG. 1, the power supply device includes power supply units (PS1, PS2, PS3,..., PSn) 2-1 and 2- connected in parallel to an AC power supply input terminal 1 respectively.
, 2-n (hereinafter, simply denoted by reference numeral 2 in any case), and a power supply control unit (PSCTL) 3 connected to each of the power supply units 2. Reference numeral 4 indicates a load (LOAD) connected to the power supply device.
【００１９】図２は，図１の電源制御部３の内部構成図
である。図２に示すように，電源制御部は，検流器１
１，アナログ／デジタル変換器１２，データ処理部１
３，及びスイッチング制御部１４を備えている。FIG. 2 is an internal configuration diagram of the power supply control unit 3 of FIG. As shown in FIG. 2, the power supply control unit includes the galvanometer 1
1, analog / digital converter 12, data processing unit 1
3 and a switching control unit 14.
【００２０】検流器１１は，負荷４に流れる本電源装置
の総電流値を検出してアナログ信号として出力する。検
出したアナログ電流値はアナログ／デジタル変換器１２
によってデジタル信号に変換され，データ処理部１３に
入力される。データ処理部１３では，この総負荷電流値
と個々の電源ユニット２の定格電流値を基に，並列接続
された電源ユニット２のうち，何台を稼働させる必要が
あるかを計算する。The current detector 11 detects the total current value of the power supply device flowing through the load 4 and outputs it as an analog signal. The detected analog current value is supplied to the analog / digital converter 12.
Is converted into a digital signal and input to the data processing unit 13. The data processing unit 13 calculates how many of the power supply units 2 connected in parallel need to be operated based on the total load current value and the rated current value of each power supply unit 2.
【００２１】また，低負荷時における特定の電源ユニッ
ト２へのの集中稼働を防ぐため，すべての電源ユニット
２の稼働率が平均化するよう，稼働させる電源ユニット
２を任意の時間単位で切替えながら選択し，スイッチン
グ制御部１４にコントロール信号を送る。Further, in order to prevent concentrated operation on a specific power supply unit 2 at the time of low load, the power supply units 2 to be operated are switched at arbitrary time units so that the operation rates of all the power supply units 2 are averaged. Then, a control signal is sent to the switching control unit 14.
【００２２】スイッチング制御部１４は，この信号を受
け，それぞれの電源ユニット２に対応して信号ラインを
スイッチングし，選択された電源ユニット２のＯＮ／Ｏ
ＦＦを制御する。Upon receiving this signal, the switching control unit 14 switches signal lines corresponding to the respective power supply units 2 to turn on / off the selected power supply unit 2.
Controls FF.
【００２３】これらの制御により，一台の大容量電源を
使用した場合に比べ，低負荷電流出力時における効率
は，個々の電源ユニット２より定格出力に近い状態で使
用されるため大幅に改善されることになる。By these controls, the efficiency at the time of low load current output is greatly improved as compared with the case where one large-capacity power supply is used because the power supply unit 2 is used in a state closer to the rated output than the individual power supply units 2. Will be.
【００２４】図３は図１の電源装置の出力電流の変化に
対する電源の制御状態を示す図である。図３に示すよう
に，電源制御部３は，総負荷電流を監視し，あらかじめ
設定したスレッショルド電流値（Ａ１TH，Ａ２TH）を越
えた場合，稼働する電源ユニット２の数を増やし，下回
った場合，その数を減らすように制御する。FIG. 3 is a diagram showing a control state of the power supply with respect to a change in the output current of the power supply device of FIG. As shown in FIG. 3, the power supply control unit 3 monitors the total load current, and if the total load current exceeds a preset threshold current value ( A1TH , A2TH ), the number of operating power supply units 2 is increased and decreased. In this case, control is performed to reduce the number.
【００２５】例えば，状態Ａの場合は稼働する電源ユニ
ット数はｌ台，状態Ｂの場合は２台，状態Ｃの場合は３
台が稼働することになる。For example, in the state A, the number of operating power supply units is one, in the state B, two, and in the state C, three.
The stand will operate.
【００２６】[0026]
【発明の効果】以上説明したように，本発明によれば，
出力電流に応じて出力する電源ユニットの数を制御する
ことによって，個々の電源ユニットは定格に近い状態で
稼動することになり，効率が改善される。As described above, according to the present invention,
By controlling the number of power supply units that output according to the output current, each power supply unit operates in a state close to the rating, and the efficiency is improved.
【図１】本発明の実施の形態による電源装置の構成図で
ある。FIG. 1 is a configuration diagram of a power supply device according to an embodiment of the present invention.
【図２】図１の電源制御部の構成を示すブロック図であ
る。FIG. 2 is a block diagram illustrating a configuration of a power supply control unit in FIG. 1;
【図３】図１の電源装置の出力電流一電源動作状態図で
ある。3 is an output current-power supply operation state diagram of the power supply device of FIG. 1;
【図４】従来技術１による電源装置の構成を示すブロッ
ク図である。FIG. 4 is a block diagram illustrating a configuration of a power supply device according to the related art 1.
１ 交流電源入力端子 ２−１，２−２，２−３，…，２−ｎ 電源ユニット ３ 電源制御部 ４ 負荷 １１ 検流器 １２ アナログ／デジタル（Ａ／Ｄ）変換器 １３ データ処理部 １４ スイッチング制御部 ５１−１，５１−２，５１−３，５１−４，…，５１−
ｎ 電源ユニット ５２ 総出力電流検出部（ＰＣ） ５３ 共通電源制御部 （ＣＣＴＬ） ５４ 負荷Description of Reference Numerals 1 AC power input terminals 2-1, 2-2, 2-3, ..., 2-n Power supply unit 3 Power supply control unit 4 Load 11 Current detector 12 Analog / digital (A / D) converter 13 Data processing unit 14 Switching control units 51-1, 51-2, 51-3, 51-4, ..., 51-
n power supply unit 52 total output current detection unit (PC) 53 common power supply control unit (CCTL) 54 load
Claims (5)
トと電源制御部とを備え，前記電源制御部は，出力する
電源ユニットの数を出力負荷電流に応じて制御すること
を特徴とする電源装置。1. A power supply device comprising: a power supply unit having a small capacity connected in parallel; and a power supply control unit, wherein the power supply control unit controls the number of power supply units to be output according to an output load current. .
電源制御部は，総負荷電流を監視し，予め設定した互い
に異なるレベルの複数のスレッショルド電流値を越えた
場合に，稼動する電源ユニットの数を増やし，下回った
場合，その数を減らすように制御することを特徴とする
電源装置。2. The power supply unit according to claim 1, wherein the power supply control unit monitors a total load current and, when a plurality of threshold current values of different levels set in advance are exceeded, a power supply unit that operates. A power supply device characterized in that the number is increased and, when the number falls below, control is performed to reduce the number.
て，前記電源制御部は，負荷に流れる当該電源装置の総
電流値を検出し，総電流値を示すアナログ信号を出力す
る検電流器と，検出された総電流値のアナログ信号をデ
ジタル信号に変換するＡ／Ｄ変換器と，このデジタル信
号の示す総電流値と個々の電源ユニットの定格電流値を
基に，必要とされる前記複数の電源ユニットの稼働台数
を算出しコントロール信号を出力するデータ処理部と，
前記コントロール信号に基づいて，前記複数の電源ユニ
ットをＯＮ／ＯＦＦさせるスイッチング制御部とを備え
ていることを特徴とする電源装置。3. The power supply device according to claim 1, wherein the power control unit detects a total current value of the power supply device flowing through the load, and outputs an analog signal indicating the total current value. An A / D converter for converting an analog signal of a detected total current value into a digital signal; and a plurality of required analog signals based on the total current value indicated by the digital signal and the rated current value of each power supply unit. A data processing unit that calculates the number of operating power supply units and outputs a control signal;
A power supply unit comprising: a switching control unit that turns on / off the plurality of power supply units based on the control signal.
データ処理部は，前記複数の電源ユニットの夫々の稼働
率が平均化するように，当該稼働する電源ユニットを任
意の時間単位で切替えながら選択するように前記コント
ロール信号を出力することを特徴とする電源装置。4. The power supply device according to claim 3, wherein the data processing unit switches the operating power supply units in arbitrary time units such that the operation rates of the plurality of power supply units are averaged. A power supply device for outputting the control signal so as to make a selection.
電源装置と当該電源装置によって駆動される少なくとも
１台の磁気ディスクドライブとを備えていることを特徴
とする補助記憶装置。5. An auxiliary storage device comprising: the power supply device according to claim 1; and at least one magnetic disk drive driven by the power supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8350388A JPH10201090A (en) | 1996-12-27 | 1996-12-27 | Power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8350388A JPH10201090A (en) | 1996-12-27 | 1996-12-27 | Power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10201090A true JPH10201090A (en) | 1998-07-31 |
Family
ID=18410156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8350388A Withdrawn JPH10201090A (en) | 1996-12-27 | 1996-12-27 | Power unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10201090A (en) |
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| WO2007137474A1 (en) * | 2006-06-01 | 2007-12-06 | Huawei Technologies Co., Ltd. | Equipment feeding method and its power system |
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