JP2014117038A - Uninterruptible power supply unit - Google Patents

Uninterruptible power supply unit Download PDF

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JP2014117038A
JP2014117038A JP2012268467A JP2012268467A JP2014117038A JP 2014117038 A JP2014117038 A JP 2014117038A JP 2012268467 A JP2012268467 A JP 2012268467A JP 2012268467 A JP2012268467 A JP 2012268467A JP 2014117038 A JP2014117038 A JP 2014117038A
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power
power supply
converter
inverter
uninterruptible
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JP6059974B2 (en
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Tomotaka Kimura
友孝 木村
Tomoaki Nogawa
智章 野川
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Abstract

PROBLEM TO BE SOLVED: To achieve cooling operations appropriate for necessity by avoiding wasteful power consumption.SOLUTION: An uninterruptible power supply unit 10, stored in an enclosure, includes: a converter 14 that converts AC power into DC power; a storage battery 16 that stores a part of DC power output by the converter 14; an inverter 15 that converts DC power output by the converter 14 or the storage battery 16 into AC power; a forced air cooling fan 22 that cools the inside of the enclosure; temperature sensors 20, 21 that detects temperatures of the converter 14 and the inverter 15; and a variable speed drive circuit 18 that controls a cooling load by the forced air cooling fan 22 on the basis of a detection result.

Description

本発明は、無停電電源装置に関する。   The present invention relates to an uninterruptible power supply.

一般的に、交流電力をコンバータにより直流電力に変換し、変換した直流電力をインバータにより交流電力に変換して負荷に供給する無停電電源装置がある。このような無停電電源装置を盤内に収納し、冷却ファンによる強制風冷を行なう無停電電源装置（ＵＰＳ：Ｕｎｉｎｔｅｒｒｕｐｔｉｂｌｅ Ｐｏｗｅｒ Ｓｕｐｐｌｙ）が知られている。さらに同種の無停電電源装置で、負荷に供給する電流に比例して冷却ファンへの供給電力を可変することで、運転効率を向上させるようにした技術が知られている。（例えば、特許文献１）   In general, there is an uninterruptible power supply that converts AC power into DC power using a converter, converts the converted DC power into AC power using an inverter, and supplies the AC power to a load. There is known an uninterruptible power supply (UPS) that houses such an uninterruptible power supply in a panel and performs forced air cooling with a cooling fan. Further, a technology is known in which the operation efficiency is improved by varying the power supplied to the cooling fan in proportion to the current supplied to the load in the same type of uninterruptible power supply. (For example, Patent Document 1)

特開２０１０−０７４９４０号公報JP 2010-074940 A

前記特許文献１に記載された技術は、負荷に供給される電流値に応じて冷却ファンの運転状態を可変している。したがって、負荷の運転状況が同じでも、無停電電源装置自体が設置されている場所の温度環境が異なる場合など、実際に冷却動作が必要な度合いが必ずしも考慮されているとは言い難い。   In the technique described in Patent Document 1, the operation state of the cooling fan is varied according to the current value supplied to the load. Therefore, even if the load operating conditions are the same, it is difficult to say that the degree of actual cooling operation is necessarily taken into account, such as when the temperature environment of the place where the uninterruptible power supply itself is installed is different.

本発明の目的は前記実情に鑑みてなされたもので、その目的とするところは、無駄な電力の消費を避け、必要に応じた冷却動作を実現することが可能な無停電電源装置を提供することにある。   The object of the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an uninterruptible power supply apparatus that can avoid unnecessary power consumption and realize a cooling operation as required. There is.

本発明の一態様に係る無停電電源装置は、筐体内に収納された無停電電源装置であって、交流電力を直流電力に変換するコンバータと、前記コンバータの出力する直流電力の一部を蓄電する蓄電池と、前記コンバータまたは蓄電池の出力する直流電力を交流電力に変換するインバータと、前記筐体内を冷却する冷却ファンと、前記筐体内の温度を検出する温度検出手段と、前記温度検出手段で検出した結果に基づいて前記冷却ファンによる冷却負荷を制御するファン制御手段とを具備したことを特徴とする。   An uninterruptible power supply according to an aspect of the present invention is an uninterruptible power supply housed in a housing, and stores a converter that converts alternating current power into direct current power and a part of the direct current power that is output from the converter. A storage battery, an inverter that converts DC power output from the converter or the storage battery into AC power, a cooling fan that cools the inside of the casing, a temperature detection means that detects the temperature in the casing, and the temperature detection means Fan control means for controlling a cooling load by the cooling fan based on the detected result is provided.

本発明によれば、無駄な電力の消費を避け、必要に応じた冷却動作を実現することが可能な無停電電源装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the uninterruptible power supply device which can avoid unnecessary power consumption and can implement | achieve cooling operation | movement as needed can be provided.

第１の実施形態に係る無停電電源装置の回路構成を示すブロック図。The block diagram which shows the circuit structure of the uninterruptible power supply which concerns on 1st Embodiment. 第２の実施形態に係る無停電電源装置の回路構成を示すブロック図。The block diagram which shows the circuit structure of the uninterruptible power supply which concerns on 2nd Embodiment.

以下、図面を参照して実施形態について詳細に説明する。   Hereinafter, embodiments will be described in detail with reference to the drawings.

（第１の実施形態）
図１は、第１の実施形態に係る無停電電源装置（ＵＰＳ）１０の機能回路の構成を示すブロック図である。無停電電源装置１０は筐体内に設けられた盤形式の装置である。バイパス入力電源１１からの交流電源が、無停電電源装置１０内の無瞬断切換回路１２に直接与えられる。 (First embodiment)
FIG. 1 is a block diagram showing a configuration of a functional circuit of an uninterruptible power supply (UPS) 10 according to the first embodiment. The uninterruptible power supply 10 is a panel-type device provided in a housing. AC power from the bypass input power supply 11 is directly applied to the uninterruptible switching circuit 12 in the uninterruptible power supply 10.

一方、交流入力電源１３からの交流電源が、無停電電源装置１０でコンバータ１４により直流に整流される。コンバータ１４の出力する直流電源は、インバータ１５及び蓄電池１６に与えられる。インバータ１５は、コンバータ１４または蓄電池１６からの直流の電力を再度交流の電力に変換した上で、前記無瞬断切換回路１２に与える。   On the other hand, the AC power supply from the AC input power supply 13 is rectified into direct current by the converter 14 in the uninterruptible power supply 10. The DC power output from the converter 14 is supplied to the inverter 15 and the storage battery 16. The inverter 15 converts the DC power from the converter 14 or the storage battery 16 into AC power again, and then supplies the AC power to the uninterruptible switching circuit 12.

前記無瞬断切換回路１２は、詳細は図示しないが、例えば半導体スイッチとコンタクタとを含み、バイパス入力電源１１からの交流電力、またはインバータ１５の出力する交流電力を選択的に無瞬断に切換えて、後段の図示しない負荷に出力する。   Although not shown in detail, the uninterruptible switching circuit 12 includes, for example, a semiconductor switch and a contactor, and selectively switches AC power from the bypass input power supply 11 or AC power output from the inverter 15 to uninterrupted power. Output to a load (not shown) in the subsequent stage.

具体的には、この無停電電源装置１０の故障時、すなわちコンバータ１４またはインバータ１５の故障時に、バイパス入力電源１１からの電力を選択して切換え、後段の負荷に出力する。   Specifically, when the uninterruptible power supply 10 fails, that is, when the converter 14 or the inverter 15 fails, the power from the bypass input power supply 11 is selected and switched and output to the subsequent load.

またコンバータ１４に入力される電力、及びインバータ１５の出力する電力は、電源切換回路１７にも与えられる。この電源切換回路１７は、通常時には交流入力電源１３からの電力を、停電時はインバータ１５の出力する電力を切換えて選択し、可変速駆動回路１８に与える。   The power input to the converter 14 and the power output from the inverter 15 are also supplied to the power supply switching circuit 17. The power supply switching circuit 17 selects the power from the AC input power supply 13 during normal operation and switches the power output from the inverter 15 during a power failure, and supplies it to the variable speed drive circuit 18.

この可変速駆動回路１８にはまた、無停電電源装置１０の筐体の吸気口近傍に設置された吸気温度センサ１９、前記コンバータ１４のヒートシンクに設置された温度センサ２０、及び前記インバータ１５のヒートシンクに設置された温度センサ２１からの各検出信号が纏めて入力される。   The variable speed drive circuit 18 also includes an intake air temperature sensor 19 installed in the vicinity of the intake port of the housing of the uninterruptible power supply 10, a temperature sensor 20 installed in the heat sink of the converter 14, and a heat sink of the inverter 15. The detection signals from the temperature sensor 21 installed in are collectively input.

可変速駆動回路１８は、電源切換回路１７から与えられる電力を用い、前記各センサ１９〜２１での検出信号に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を冷却する。   The variable speed drive circuit 18 uses the electric power supplied from the power supply switching circuit 17 to drive the forced air cooling fan 22 at a rotational speed corresponding to the detection signals from the sensors 19 to 21, and the housing of the uninterruptible power supply 10. Cool the body.

次に前記実施形態の動作を説明する。
停電が生じていない通常時、交流入力電源１３からの交流電力がコンバータ１４で直流電力に変換され、蓄電池１６を充電する一方で、インバータ１５で再度交流化され、無瞬断切換回路１２で選択されて後段の負荷に供給される。 Next, the operation of the embodiment will be described.
During normal times when no power failure occurs, AC power from the AC input power supply 13 is converted to DC power by the converter 14 and charged to the storage battery 16, while being converted to AC again by the inverter 15 and selected by the uninterruptible switching circuit 12. And supplied to the subsequent load.

このとき電源切換回路１７は、コンバータ１４に入力される交流電力を選択して可変速駆動回路１８に動作電力として供給する。
可変速駆動回路１８は、吸気温度センサ１９での検出温度により無停電電源装置１０の筐体内で加熱されていない吸気の温度を、コンバータヒートシンク温度センサ２０、及びインバータヒートシンク温度センサ２１からの各検出温度により無停電電源装置１０の筐体内の発熱源となるコンバータ１４及びインバータ１５の各温度を直接認識することで、必要に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を換気して冷却させる。 At this time, the power supply switching circuit 17 selects AC power input to the converter 14 and supplies it as operating power to the variable speed drive circuit 18.
The variable speed drive circuit 18 detects the temperature of the intake air that is not heated in the casing of the uninterruptible power supply 10 by the detected temperature of the intake air temperature sensor 19 from the converter heat sink temperature sensor 20 and the inverter heat sink temperature sensor 21. By directly recognizing the temperatures of the converter 14 and the inverter 15 that are heat sources in the housing of the uninterruptible power supply 10 according to the temperature, the forced air cooling fan 22 is driven at a rotational speed as required, and the uninterruptible power supply apparatus Ventilate and cool the inside of the 10 housings.

停電が生じた非常時には、それまで蓄電池１６に充電されていた直流電力がインバータ１５で交流化され、無瞬断切換回路１２で選択されて後段の負荷に供給される。   In the event of a power failure, the DC power previously charged in the storage battery 16 is converted to AC by the inverter 15, selected by the uninterruptible switching circuit 12, and supplied to the subsequent load.

このとき電源切換回路１７は、インバータ１５の出力する交流電力を選択して可変速駆動回路１８に動作電力として供給する。   At this time, the power supply switching circuit 17 selects the AC power output from the inverter 15 and supplies it as operating power to the variable speed drive circuit 18.

可変速駆動回路１８は、吸気温度センサ１９での検出温度により無停電電源装置１０の筐体内で加熱されていない吸気の温度を、コンバータヒートシンク温度センサ２０、及びインバータヒートシンク温度センサ２１からの各検出温度により無停電電源装置１０の筐体内の発熱源となるコンバータ１４及びインバータ１５の各温度を直接認識することで、必要に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を換気して冷却させる。   The variable speed drive circuit 18 detects the temperature of the intake air that is not heated in the casing of the uninterruptible power supply 10 by the detected temperature of the intake air temperature sensor 19 from the converter heat sink temperature sensor 20 and the inverter heat sink temperature sensor 21. By directly recognizing the temperatures of the converter 14 and the inverter 15 that are heat sources in the housing of the uninterruptible power supply 10 according to the temperature, the forced air cooling fan 22 is driven at a rotational speed as required, and the uninterruptible power supply apparatus Ventilate and cool the inside of the 10 housings.

またコンバータ１４またはインバータ１５が故障するか、あるいは無停電電源装置１０のメンテナンス作業によりコンバータ１４及びインバータ１５の少なくとも一方が正常に動作しない場合、無瞬断切換回路１２がバイパス入力電源１１から供給される交流電力を選択して切換え、後段の負荷に供給する。   When the converter 14 or the inverter 15 fails or when at least one of the converter 14 and the inverter 15 does not operate normally due to maintenance work of the uninterruptible power supply 10, the uninterruptible switching circuit 12 is supplied from the bypass input power supply 11. The AC power to be switched is selected and supplied to the subsequent load.

このとき、コンバータ１４及びインバータ１５の少なくとも一方が機能していないために、電源切換回路１７は可変速駆動回路１８への給電を行なわず、強制空冷用ファン２２による無停電電源装置１０の筐体内の冷却は実行されない。   At this time, since at least one of the converter 14 and the inverter 15 is not functioning, the power supply switching circuit 17 does not supply power to the variable speed drive circuit 18, and the forced air-cooling fan 22 uses the inside of the casing of the uninterruptible power supply 10. No cooling is performed.

このように本実施形態では、可変速駆動回路１８が電源切換回路１７から供給される電力を用い、特にコンバータヒートシンク温度センサ２０と、インバータヒートシンク温度センサ２１の各検出温度に応じて強制空冷用ファン２２の回転速度を適切に調整することにより、冷却対象となるコンバータ１４及びインバータ１５の温度を勘案して無駄な電力の消費を避け、必要に応じた冷却動作を実現することができる。   As described above, in this embodiment, the variable speed driving circuit 18 uses the power supplied from the power supply switching circuit 17, and in particular the forced air cooling fan according to the detected temperatures of the converter heat sink temperature sensor 20 and the inverter heat sink temperature sensor 21. By appropriately adjusting the rotation speed of the motor 22, it is possible to avoid unnecessary power consumption in consideration of the temperatures of the converter 14 and the inverter 15 to be cooled, and to realize a cooling operation as necessary.

（第２の実施形態）
図２は、第２の実施形態に係る無停電電源装置（ＵＰＳ）３０の機能回路の構成を示すブロック図である。無停電電源装置３０内の個々の構成について、前記図１で示したものと同一部分には同一符号を付加して、重複する説明を省略する。 (Second Embodiment)
FIG. 2 is a block diagram illustrating a configuration of a functional circuit of the uninterruptible power supply (UPS) 30 according to the second embodiment. Regarding the individual components in the uninterruptible power supply 30, the same parts as those shown in FIG.

無瞬断切換回路１２が後段の負荷に対して出力する交流電力の電流値が検出され、その検出結果が可変速駆動回路１８に与えられる。   The current value of the AC power output from the uninterruptible switching circuit 12 to the subsequent load is detected, and the detection result is given to the variable speed drive circuit 18.

また、前記コンバータ１４及びインバータ１５のヒートシンクに近接して熱電変換素子を用いた熱電交換部３１が設けられる。この熱電交換部３１は、例えばゼーベック効果を利用して無停電電源装置３０の筐体内で発生する熱を電力に変換するものであり、ここで発生した直流の電力は電力回生回路３２により回収され、交流化されて前記電源切換回路１７に与えられる。   A thermoelectric exchange unit 31 using a thermoelectric conversion element is provided in the vicinity of the heat sink of the converter 14 and the inverter 15. The thermoelectric exchanging unit 31 converts heat generated in the housing of the uninterruptible power supply 30 into electric power by using, for example, the Seebeck effect, and the generated DC power is recovered by the power regeneration circuit 32. , And converted into an alternating current and supplied to the power supply switching circuit 17.

電源切換回路１７は、電力回生回路３２から供給される電力と、通常時には交流入力電源１３からの電力を、停電時はインバータ１５の出力する電力を切換えて選択し、可変速駆動回路１８に与える。   The power supply switching circuit 17 selects the power supplied from the power regeneration circuit 32, the power from the AC input power supply 13 during normal times, and the power output from the inverter 15 during a power failure, and supplies the selected power to the variable speed drive circuit 18. .

可変速駆動回路１８は、電源切換回路１７から与えられる電力を用い、前記無瞬断切換回路１２が負荷に電力を供給する際の検出電流に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を冷却する。   The variable speed drive circuit 18 uses the power supplied from the power supply switching circuit 17 to drive the forced air cooling fan 22 at a rotational speed corresponding to the detected current when the uninterruptible switching circuit 12 supplies power to the load. The interior of the uninterruptible power supply 10 is cooled.

次に前記実施形態の動作を説明する。
停電が生じていない通常時、交流入力電源１３からの交流電力がコンバータ１４で直流電力に変換され、蓄電池１６を充電する一方で、インバータ１５で再度交流化され、無瞬断切換回路１２で選択されて後段の負荷に供給される。 Next, the operation of the embodiment will be described.
During normal times when no power failure occurs, AC power from the AC input power supply 13 is converted to DC power by the converter 14 and charged to the storage battery 16, while being converted to AC again by the inverter 15 and selected by the uninterruptible switching circuit 12. And supplied to the subsequent load.

このとき電源切換回路１７は、コンバータ１４に入力される交流電力を選択する。また合わせてコンバータ１４及びインバータ１５で発生した熱の一部が前記熱電交換部３１及び電力回生回路３２により回収され、交流入力電源１３からの交流電力に重畳して電源切換回路１７に与えられる。電源切換回路１７は、これらの電力を可変速駆動回路１８に動作電力として供給する。   At this time, the power supply switching circuit 17 selects the AC power input to the converter 14. In addition, a part of the heat generated in the converter 14 and the inverter 15 is recovered by the thermoelectric exchanging unit 31 and the power regeneration circuit 32, and is superimposed on the AC power from the AC input power supply 13 and supplied to the power supply switching circuit 17. The power supply switching circuit 17 supplies these electric powers as operating power to the variable speed drive circuit 18.

可変速駆動回路１８は、無瞬断切換回路１２から負荷への電流値により必要に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を換気して冷却させる。   The variable speed drive circuit 18 drives the forced air cooling fan 22 at a rotational speed as required by the current value from the uninterruptible switching circuit 12 to the load, and ventilates and cools the interior of the uninterruptible power supply 10. .

停電が生じた非常時には、それまで蓄電池１６に充電されていた直流電力がインバータ１５で交流化され、無瞬断切換回路１２で選択されて後段の負荷に供給される。   In the event of a power failure, the DC power previously charged in the storage battery 16 is converted to AC by the inverter 15, selected by the uninterruptible switching circuit 12, and supplied to the subsequent load.

このとき電源切換回路１７は、インバータ１５の出力する交流電力を選択する。またこの際、コンバータ１４及びインバータ１５で発生した熱の一部が前記熱電交換部３１及び電力回生回路３２により回収され、途絶している交流入力電源１３からの交流電力に代えて電源切換回路１７に与えられる。電源切換回路１７は、選択したインバータ１５からの交流電力に電力回生回路３２からの電力を重畳して可変速駆動回路１８に動作電力として供給する。   At this time, the power supply switching circuit 17 selects the AC power output from the inverter 15. At this time, a part of the heat generated in the converter 14 and the inverter 15 is recovered by the thermoelectric exchanging unit 31 and the power regeneration circuit 32, and the power source switching circuit 17 is substituted for the AC power from the AC input power source 13 which has been interrupted. Given to. The power supply switching circuit 17 superimposes the power from the power regeneration circuit 32 on the AC power from the selected inverter 15 and supplies it to the variable speed drive circuit 18 as operating power.

可変速駆動回路１８は、無瞬断切換回路１２から負荷への電流値により必要に応じた回転速度で強制空冷用ファン２２を駆動し、無停電電源装置１０の筐体内を換気して冷却させる。   The variable speed drive circuit 18 drives the forced air cooling fan 22 at a rotational speed as required by the current value from the uninterruptible switching circuit 12 to the load, and ventilates and cools the interior of the uninterruptible power supply 10. .

またコンバータ１４またはインバータ１５が故障するか、あるいは無停電電源装置１０のメンテナンス作業によりコンバータ１４及びインバータ１５の少なくとも一方が正常に動作しない場合、無瞬断切換回路１２がバイパス入力電源１１から供給される交流電力を選択して切換え、後段の負荷に供給する。   When the converter 14 or the inverter 15 fails or when at least one of the converter 14 and the inverter 15 does not operate normally due to maintenance work of the uninterruptible power supply 10, the uninterruptible switching circuit 12 is supplied from the bypass input power supply 11. The AC power to be switched is selected and supplied to the subsequent load.

このとき、コンバータ１４及びインバータ１５の少なくとも一方が機能していないために、電源切換回路１７は可変速駆動回路１８への給電を行なわず、強制空冷用ファン２２による無停電電源装置１０の筐体内の冷却は実行されない。   At this time, since at least one of the converter 14 and the inverter 15 is not functioning, the power supply switching circuit 17 does not supply power to the variable speed drive circuit 18, and the forced air-cooling fan 22 uses the inside of the casing of the uninterruptible power supply 10. No cooling is performed.

このように本実施形態では、冷却対象で発生する熱を積極的に回収して、冷却動作を実行する強制空冷用ファン２２に供給するものとしたので、無駄な電力の消費を避け、必要に応じた冷却動作を実現することができる。   As described above, in the present embodiment, the heat generated in the object to be cooled is positively recovered and supplied to the forced air cooling fan 22 that performs the cooling operation, so that unnecessary power consumption is avoided and necessary. A corresponding cooling operation can be realized.

なお前記第１の実施形態で説明した構成と前記第２の実施形態で説明した構成とを組合せ、前記図１の電源切換回路１７に対して前記図２の熱電交換部３１及び電力回生回路３２を付加するような構成とすることも考えられる。   The configuration described in the first embodiment and the configuration described in the second embodiment are combined, and the thermoelectric exchange unit 31 and the power regeneration circuit 32 in FIG. 2 with respect to the power supply switching circuit 17 in FIG. It is also possible to adopt a configuration in which is added.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の趣旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。   Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

１０…無停電電源装置、１１…バイパス入力電源、１２…無瞬断切換回路、１３…交流入力電源、１４…コンバータ、１５…インバータ、１６…蓄電池、１７…電源切換回路、１８…可変速駆動回路、１９…吸気温度センサ、２０…コンバータヒートシンク温度センサ、２１…インバータヒートシンク温度センサ、２２…強制空冷用ファン、３０…無停電電源装置、３１…熱電交換部、３２…電力回生回路。   DESCRIPTION OF SYMBOLS 10 ... Uninterruptible power supply, 11 ... Bypass input power supply, 12 ... Uninterruptible switching circuit, 13 ... AC input power supply, 14 ... Converter, 15 ... Inverter, 16 ... Storage battery, 17 ... Power supply switching circuit, 18 ... Variable speed drive DESCRIPTION OF SYMBOLS 19 ... Intake air temperature sensor, 20 ... Converter heat sink temperature sensor, 21 ... Inverter heat sink temperature sensor, 22 ... Forced air cooling fan, 30 ... Uninterruptible power supply, 31 ... Thermoelectric exchange part, 32 ... Power regeneration circuit

Claims (2)

筐体内に収納された無停電電源装置であって、
交流電力を直流電力に変換するコンバータと、
前記コンバータの出力する直流電力の一部を蓄電する蓄電池と、
前記コンバータまたは蓄電池の出力する直流電力を交流電力に変換するインバータと、
前記筐体内を冷却する冷却ファンと、
前記コンバータ及び前記インバータの少なくとも一方の温度を検出する温度検出手段と、
前記温度検出手段で検出した結果に基づいて前記冷却ファンによる冷却負荷を制御するファン制御手段と
を具備したことを特徴とする無停電電源装置。 An uninterruptible power supply housed in a housing,
A converter that converts AC power into DC power;
A storage battery that stores part of the DC power output by the converter;
An inverter that converts the DC power output from the converter or the storage battery into AC power;
A cooling fan for cooling the inside of the housing;
Temperature detecting means for detecting the temperature of at least one of the converter and the inverter;
An uninterruptible power supply comprising: fan control means for controlling a cooling load by the cooling fan based on a result detected by the temperature detection means. 筐体内に収納された無停電電源装置であって、
交流電力を直流電力に変換するコンバータと、
前記コンバータの出力する直流電力の一部を蓄電する蓄電池と、
前記コンバータまたは蓄電池の出力する直流電力を交流電力に変換するインバータと、
前記筐体内を冷却する冷却ファンと、
前記コンバータ及び前記インバータの少なくとも一方で発生する熱を電力に変換する熱電変換手段と、
前記熱電変換手段で得た電力を前記冷却ファンに供給するファン駆動制御手段と
を具備したことを特徴とする無停電電源装置。 An uninterruptible power supply housed in a housing,
A converter that converts AC power into DC power;
A storage battery that stores part of the DC power output by the converter;
An inverter that converts the DC power output from the converter or the storage battery into AC power;
A cooling fan for cooling the inside of the housing;
Thermoelectric conversion means for converting heat generated in at least one of the converter and the inverter into electric power;
An uninterruptible power supply apparatus comprising fan drive control means for supplying electric power obtained by the thermoelectric conversion means to the cooling fan.
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