JPH10336916A - Power supply system for emergency - Google Patents
Power supply system for emergencyInfo
- Publication number
- JPH10336916A JPH10336916A JP9140137A JP14013797A JPH10336916A JP H10336916 A JPH10336916 A JP H10336916A JP 9140137 A JP9140137 A JP 9140137A JP 14013797 A JP14013797 A JP 14013797A JP H10336916 A JPH10336916 A JP H10336916A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- power
- solar cell
- charged
- switch
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は非常用電源システム
に関し、特に商用電力系統が停電したときに、太陽電池
もしくは蓄電池から自立負荷へ電力を供給するようにし
た非常用電源システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency power supply system, and more particularly, to an emergency power supply system that supplies power from a solar cell or a storage battery to a self-sustaining load when a commercial power system fails.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従来
の非常用電源システムを図２に示す。図２中、２１は太
陽電池、２２は蓄電池、２３は商用電力系統、２４は自
立負荷である。2. Description of the Related Art FIG. 2 shows a conventional emergency power supply system. In FIG. 2, reference numeral 21 denotes a solar cell, 22 denotes a storage battery, 23 denotes a commercial power system, and 24 denotes an independent load.
【０００３】自立負荷２４は、インバータ２７及び第１
のスイッチ２５を介して太陽電池２１に接続されてい
る。また、この自立負荷２４は、ＤＣ／ＤＣコンバータ
２８、インバータ２７、及び第１のスイッチ２５を介し
て蓄電池２２に接続されている。太陽電池２１は、イン
バータ２７、第３のスイッチ２８、および第２のスイッ
チ２６を介して商用電力系統２３に接続されている。太
陽電池２１と蓄電池２２は、ＤＣ／ＤＣコンバータ２８
を介して接続されており、太陽電池２１の出力電力がＤ
Ｃ／ＤＣコンバータ２８を介して蓄電池２２に充電され
る。The self-supporting load 24 includes an inverter 27 and a first
Is connected to the solar cell 21 via the switch 25. The self-supporting load 24 is connected to the storage battery 22 via a DC / DC converter 28, an inverter 27, and a first switch 25. The solar cell 21 is connected to a commercial power system 23 via an inverter 27, a third switch 28, and a second switch 26. The solar cell 21 and the storage battery 22 are a DC / DC converter 28
And the output power of the solar cell 21 is D
The storage battery 22 is charged via the C / DC converter 28.
【０００４】通常は、第２のスイッチ２６と第３のスイ
ッチ２９がオンして、太陽電池の出力をインバータ２７
で交流に変換して商用電力系統２３に逆潮流させる。商
用電力系統２３で停電などが発生した場合、第２のスイ
ッチ２６がオフすると共に、インバータ２７が駆動し、
太陽電池２１と蓄電池２２から自立負荷２４へ電力が供
給されて駆動される。Normally, the second switch 26 and the third switch 29 are turned on to output the output of the solar cell to the inverter 27.
And the reverse power flow to the commercial power system 23. When a power failure or the like occurs in the commercial power system 23, the second switch 26 is turned off, and the inverter 27 is driven.
Electric power is supplied from the solar cell 21 and the storage battery 22 to the independent load 24 to be driven.
【０００５】ところが、この従来の非常用電源システム
では、太陽電池２１の出力電力が蓄電池２２に充電され
るものの、太陽電池２１の出力電力は不安定であり、蓄
電池２２の充電制御が困難であると共に、雨などで発電
しない日は蓄電池２２を充電できないので、蓄電池２２
の容量を大きくする必要があり、コストが高く、広い設
置スペースが必要であるという問題があった。However, in this conventional emergency power supply system, although the output power of the solar cell 21 is charged to the storage battery 22, the output power of the solar cell 21 is unstable, and it is difficult to control the charging of the storage battery 22. At the same time, the storage battery 22 cannot be charged on days when power is not generated due to rain or the like.
However, there is a problem that it is necessary to increase the capacity of the device, the cost is high, and a large installation space is required.
【０００６】また、図３に示すように、商用電力系統３
３と自立負荷３４とを第１のスイッチ３５、第１のイン
バータ３８、逆流防止用ダイオード３７、第２のインバ
ータ３８、逆流防止用ダイオード４０、第３のスイッチ
４１、及び第２のスイッチ３９で接続すると共に、太陽
電池３１と自立負荷３４を第１のスイッチ３５、第１の
インバータ３６、及び逆流防止用ダイオード３７を介し
て接続し、太陽電池３１と蓄電池３２を逆流防止用ダイ
オード３７を介して接続した非常用電源システムもあっ
た。この従来の非常用電源システムでは、太陽電池３１
の出力電力を蓄電池３２に充電すると共に、自立負荷３
４に専用の第１のインバータ３６が接続されており、商
用電力系統３３が停電した場合に、太陽電池３１と蓄電
池３２からこの第１のインバータ３６を介して自立負荷
３４へ電力を供給するものである。Further, as shown in FIG.
The first switch 35, the first inverter 38, the backflow prevention diode 37, the second inverter 38, the backflow prevention diode 40, the third switch 41, and the second switch 39 At the same time, the solar cell 31 and the independent load 34 are connected via the first switch 35, the first inverter 36, and the diode 37 for preventing backflow, and the solar cell 31 and the storage battery 32 are connected via the diode 37 for backflow prevention. Some emergency power systems were connected. In this conventional emergency power supply system, the solar cell 31
Is charged into the storage battery 32 and the independent load 3
4 is connected to a dedicated first inverter 36, and supplies power from the solar battery 31 and the storage battery 32 to the self-supporting load 34 via the first inverter 36 when the commercial power system 33 loses power. It is.
【０００７】ところが、この従来の非常用電源システム
でも、太陽電池３１の出力電力が蓄電池３２に充電され
ることから、蓄電池３２の充電制御が困難であると共
に、雨などで発電しない日は蓄電池３２を充電できない
ので、蓄電池３２の容量を大きくする必要があり、コス
トが高く、広い設置スペースが必要であるという問題が
あった。さらに、この従来の非常用電源システムでは、
専用の第１のインバータ３６が必要でコストが高くな
り、また太陽電池３１から蓄電池３２へ充電し、第１の
インバータ３６を介して交流に変換して、自立負荷３４
へ電力を供給するので変換効率が悪いという問題もあっ
た。However, even in the conventional emergency power supply system, since the output power of the solar cell 31 is charged in the storage battery 32, it is difficult to control the charging of the storage battery 32, and when the power is not generated due to rain or the like, the storage battery 32 is not used. Therefore, there is a problem that the capacity of the storage battery 32 must be increased, the cost is high, and a large installation space is required. Furthermore, in this conventional emergency power supply system,
A dedicated first inverter 36 is required, which increases the cost. In addition, the solar battery 31 is charged into the storage battery 32 and is converted into an alternating current through the first inverter 36, so that the self-standing load 34
There is also a problem that the conversion efficiency is poor because power is supplied to the power supply.
【０００８】本発明に係る非常用電源システムは、この
ような従来装置の問題点に鑑みて発明されたものであ
り、蓄電池の充電制御が困難で、蓄電池の容量を大きく
する必要があり、コストが高く、広い設置スペースを必
要とするという問題点を解消すると共に、負荷を駆動す
るための専用のインバータが必要でコストが高くなり、
自立負荷へ電力を供給するのに変換効率が悪くなるとい
う問題点を解消した非常用電源システムを提供すること
を目的とする。The emergency power supply system according to the present invention has been developed in view of such a problem of the conventional apparatus, and it is difficult to control the charging of the storage battery, and it is necessary to increase the capacity of the storage battery. High cost and a large installation space are required, and a dedicated inverter for driving the load is required, increasing the cost.
It is an object of the present invention to provide an emergency power supply system that solves the problem that conversion efficiency deteriorates when supplying power to an independent load.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る非常用電源システムでは、商用電力系
統が停電したときに、太陽電池又は蓄電池から負荷へ電
力供給する非常用電源システムにおいて、前記蓄電池を
前記太陽電池又は商用電力系統のいずれかから選択的に
充電できるようにした。In order to achieve the above object, an emergency power supply system according to the present invention provides an emergency power supply system for supplying power from a solar battery or a storage battery to a load when a commercial power system fails. , The storage battery can be selectively charged from either the solar cell or the commercial power system.
【００１０】また、本発明に係る非常用電源システムで
は、前記太陽電池から前記負荷へ電力供給する場合にお
いて、前記太陽電池の出力電力量が前記負荷の消費電力
量よりも小さいときは、その不足電力を前記蓄電池から
前記負荷へ供給すると共に、前記太陽電池の出力電力量
が前記負荷の消費電力量よりも大きいときは、その余剰
電力を前記蓄電池へ充電することが望ましい。In the emergency power supply system according to the present invention, when power is supplied from the solar cell to the load, if the output power of the solar cell is smaller than the power consumption of the load, the shortage may occur. It is preferable that the power be supplied from the storage battery to the load, and that when the output power of the solar cell is larger than the power consumption of the load, the surplus power be charged to the storage battery.
【００１１】さらに、本発明に係る非常用電源システム
では、前記商用電力系統から前記蓄電池を充電する場
合、前記太陽電池の出力電力を前記商用電力系統に逆潮
流させることが望ましい。Further, in the emergency power supply system according to the present invention, when the storage battery is charged from the commercial power system, it is preferable that the output power of the solar cell is caused to flow backward to the commercial power system.
【００１２】さらにまた、本発明に係る非常用電源シス
テムでは、前記商用電力系統から前記蓄電池を充電する
場合、その深夜電力で前記蓄電池を充電することが望ま
しい。Further, in the emergency power supply system according to the present invention, when charging the storage battery from the commercial power system, it is desirable to charge the storage battery with the midnight power.
【００１３】[0013]
【発明の実施の形態】以下、本発明を添付図面に基づき
詳細に説明する。図１は本発明に係る非常用電源システ
ムの一実施形態を示す図であり、１は太陽電池、２は蓄
電池、３は商用電力系統、４は自立負荷である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing an embodiment of an emergency power supply system according to the present invention, wherein 1 is a solar cell, 2 is a storage battery, 3 is a commercial power system, and 4 is a self-supporting load.
【００１４】商用電力系統３は負荷１６に接続されてい
る。また、自立負荷４と太陽電池１は、インバータ７と
第１のスイッチ５を介して接続されている。なお、本シ
ステムにおいて、自立負荷４が商用電力系統３の電力で
直接駆動されることはない。The commercial power system 3 is connected to a load 16. In addition, the independent load 4 and the solar cell 1 are connected via the inverter 7 and the first switch 5. In this system, the independent load 4 is not directly driven by the electric power of the commercial power system 3.
【００１５】この太陽電池１とインバータ７との間から
分岐して蓄電池２が接続されている。この太陽電池１と
インバータ７とは、第３のスイッチ８と第４のスイッチ
９を介して接続されている。この第３のスイッチ８と第
４のスイッチ９部分には、逆流防止用ダイオード１０、
１１が隣接して接続されている。この第３のスイッチ８
と蓄電池２との間には、第５のスイッチ１２と充電器１
３を介して商用電力系統３が接続されている。また、こ
の充電器１３と蓄電池２との間には、制御回路１４が接
続されている。この制御回路１４には３点スイッチ１５
が接続されており、蓄電池２への充電モードが選択でき
るように構成されている。A storage battery 2 is connected to a branch from the solar cell 1 and the inverter 7. The solar cell 1 and the inverter 7 are connected via a third switch 8 and a fourth switch 9. The third switch 8 and the fourth switch 9 have a backflow prevention diode 10,
11 are connected adjacently. This third switch 8
A fifth switch 12 and a charger 1
The commercial power system 3 is connected via the power line 3. A control circuit 14 is connected between the charger 13 and the storage battery 2. The control circuit 14 includes a three-point switch 15
Are connected so that a charge mode for the storage battery 2 can be selected.
【００１６】本発明では、スイッチ１５で商用電力系統
３の電力で蓄電池２を充電するモードと太陽電池１で蓄
電池２を充電するモードとを選択できる。すなわち、ス
イッチ１５を例えば接点Ｓ1 側に接続すると商用電力系
統３から充電するモードになり、例えば接点Ｓ2 側に接
続すると太陽電池１で充電するモードになる。In the present invention, a mode in which the switch 15 charges the storage battery 2 with the power of the commercial power system 3 and a mode in which the storage battery 2 is charged with the solar cell 1 can be selected. That is, when connecting the switch 15, for example to the contact S 1 side becomes a mode for charging from the commercial power system 3, the mode of charging by the solar cell 1 when connected to, for example, the contact S 2 side.
【００１７】商用電力系統３の電力で蓄電池２を充電す
るモードの場合、深夜の電力料金が安い時間帯になると
タイマー（不図示）がカウントアップして第５のスイッ
チ１２がオンして蓄電池２へ充電されるようにすること
もできる。このモードの場合、太陽電池１の出力電力
は、蓄電池２に充電することなくインバータ７を介して
商用電力系統３へ逆潮流させて売電する。商用電力系統
３が停電した場合、インバータ７のインターロック解除
信号が出力され、蓄電池２の充放電が可能になり、第３
のスイッチ８と第４のスイッチ９がオンして、太陽電池
１と蓄電池２がインバータ７に接続される。このとき、
商用電力系統３が停電するために自立型となるように、
インバータ７の制御方式を電流制御型から電圧制御型に
変更し、自立負荷４へ供給する。この場合、自立負荷４
の消費電力が小さく、太陽電池１の出力電力が余った場
合は、その余剰電力は蓄電池２に充電する。自立負荷４
の消費電力が大きく、太陽電池１の出力電力では足りな
い場合は、蓄電池２の電力もインバータ７を介して自立
負荷４へ供給する。In the case of the mode in which the storage battery 2 is charged with the power of the commercial power system 3, a timer (not shown) counts up and the fifth switch 12 is turned on to turn on the storage battery 2 when the late night power rate is low. Can be charged. In this mode, the output power of the solar cell 1 is supplied to the commercial power system 3 via the inverter 7 in a reverse flow without charging the storage battery 2 to sell the power. When the commercial power system 3 is out of power, an interlock release signal of the inverter 7 is output, and the storage battery 2 can be charged and discharged.
The switch 8 and the fourth switch 9 are turned on, and the solar cell 1 and the storage battery 2 are connected to the inverter 7. At this time,
In order for the commercial power system 3 to be self-sustaining due to a power outage,
The control method of the inverter 7 is changed from the current control type to the voltage control type, and the inverter 7 is supplied to the independent load 4. In this case, the independent load 4
When the power consumption of the solar cell 1 is small and the output power of the solar cell 1 is surplus, the surplus power charges the storage battery 2. Independent load 4
If the power consumption of the storage battery 2 is large and the output power of the solar cell 1 is not enough, the power of the storage battery 2 is also supplied to the independent load 4 via the inverter 7.
【００１８】この商用電力系統３の電力で蓄電池２を充
電するモードの場合、不日照による太陽電池１の出力低
下など考慮せずに確実に蓄電池２に充電できることか
ら、蓄電池２と充電器１３の容量を小さくでき、設置ス
ペースとコストの削減を図ることができる。また、昼間
に太陽電池１で発電した電力は商用電力系統３に売電す
ると共に、蓄電池１の充電は電気料金の安い深夜に行う
ことから、ランニングコストの低減を図ることができ
る。In the case of the mode in which the storage battery 2 is charged with the electric power of the commercial power system 3, the storage battery 2 can be reliably charged without taking into consideration such as a decrease in the output of the solar cell 1 due to insolation. The capacity can be reduced, and the installation space and cost can be reduced. Further, the power generated by the solar cell 1 in the daytime is sold to the commercial power system 3 and the storage battery 1 is charged at midnight when the electricity rate is low, so that the running cost can be reduced.
【００１９】太陽電池１の出力電力で蓄電池２を充電す
るモードの場合、第５のスイッチ１２をオフすると共
に、第３のスイッチ８をオンにして、太陽電池１の出力
電力で蓄電池２を充電する。この場合において、商用電
力系統３が停電した場合、インバータ７のインターロッ
ク解除信号が出力され、第４のスイッチ９がオンして蓄
電池２の充放電が可能になり、太陽電池１がインバータ
７に接続される。このとき、商用電力系統３が停電する
ために自立型となるように、インバータ７の制御方式を
電流制御型から電圧制御型に変更し、自立負荷４へ供給
する。この場合、自立負荷４の消費電力量が小さく、太
陽電池１の出力電力が余った場合は、その余剰電力は蓄
電池２に充電する。自立負荷４の消費電力量が大きく、
太陽電池１の出力電力では足りない場合、蓄電池２の電
力もインバータ７を介して自立負荷４へ供給する。In the mode of charging the storage battery 2 with the output power of the solar cell 1, the fifth switch 12 is turned off and the third switch 8 is turned on to charge the storage battery 2 with the output power of the solar cell 1. I do. In this case, when the commercial power system 3 is out of power, an interlock release signal of the inverter 7 is output, the fourth switch 9 is turned on, and the storage battery 2 can be charged / discharged. Connected. At this time, the control method of the inverter 7 is changed from the current control type to the voltage control type so that the commercial power system 3 becomes a self-sustained type due to a power outage, and is supplied to the self-supporting load 4. In this case, when the power consumption of the independent load 4 is small and the output power of the solar cell 1 is left, the surplus power charges the storage battery 2. The power consumption of the independent load 4 is large,
When the output power of the solar cell 1 is not enough, the power of the storage battery 2 is also supplied to the independent load 4 via the inverter 7.
【００２０】この太陽電池１の出力電力で蓄電池２を充
電するモードは、太陽電池１の出力電力が小さくてイン
バータ７が動作せず、太陽電池１の出力電力を商用電力
系統３に逆潮流させることができない場合などに、太陽
電池１の出力電力を無駄にすることなく蓄電池２に充電
できて有効である。In the mode in which the storage battery 2 is charged with the output power of the solar cell 1, the output power of the solar cell 1 is small, the inverter 7 does not operate, and the output power of the solar cell 1 flows backward to the commercial power system 3. In the case where the storage battery 2 cannot be used, the storage battery 2 can be charged without wasting the output power of the solar cell 1, which is effective.
【００２１】なお、上述した各スイッチは、リレーの接
点で構成すればよい。Each of the above-mentioned switches may be constituted by a relay contact.
【００２２】[0022]
【発明の効果】以上のように、本発明に係る非常用電源
システムによれば、商用電力系統が停電したときに自立
負荷を駆動する蓄電池を太陽電池又は商用電力系統のい
ずれかから選択的に充電するようにしたことから、商用
電力系統の電力で蓄電池を充電する場合、不日照による
太陽電池の出力低下など考慮せずに確実に充電できるこ
とから、蓄電池と充電器の容量を小さくでき、設置スペ
ースとコストの削減を図ることができる。また、昼間に
太陽電池で発電した電力は商用電力系統に売電できると
共に、蓄電池の充電は電気料金の安い深夜に行うことが
でき、ランニングコストの低減を図ることができる。さ
らに、太陽電池の出力電力で蓄電池を充電する場合、太
陽電池の出力電力が小さくてインバータが動作せず、太
陽電池の出力電力を商用電力系統に売電できない場合な
どに、太陽電池の出力電力を無駄にすることなく蓄電池
に充電できて有効である。As described above, according to the emergency power supply system according to the present invention, the storage battery for driving the self-sustaining load when the commercial power system fails is selectively selected from either the solar battery or the commercial power system. When the storage battery is charged with the power from the commercial power system, the battery can be reliably charged without taking into account such factors as a decrease in the output of the solar cell due to insolation, so the capacities of the storage battery and the charger can be reduced. Space and cost can be reduced. Further, the power generated by the solar cells in the daytime can be sold to the commercial power system, and the storage battery can be charged at midnight when the electricity rate is low, so that the running cost can be reduced. Furthermore, when the storage battery is charged with the output power of the solar cell, the output power of the solar cell is low when the output power of the solar cell is too small to operate the inverter and the output power of the solar cell cannot be sold to the commercial power system. Is effective because the storage battery can be charged without wasting power.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る非常用電源システムの一実施形態
を示す図である。FIG. 1 is a diagram showing one embodiment of an emergency power supply system according to the present invention.
【図２】従来の非常用電源システムの一実施形態を示す
図である。FIG. 2 is a diagram showing one embodiment of a conventional emergency power supply system.
【図３】従来の非常用電源システムの一実施形態を示す
図である。FIG. 3 is a diagram showing one embodiment of a conventional emergency power supply system.
１………太陽電池、２………蓄電池、３………商用電力
系統、４………自立負荷1 ... solar cell, 2 ... storage battery, 3 ... commercial power system, 4 ... independent load
Claims (4)
池又は蓄電池から負荷へ電力供給する非常用電源システ
ムにおいて、前記蓄電池を前記太陽電池又は商用電力系
統のいずれかから選択的に充電できるようにしたことを
特徴とする非常用電源システム。1. An emergency power supply system for supplying power from a solar battery or a storage battery to a load when a commercial power system loses power so that the storage battery can be selectively charged from either the solar battery or the commercial power system. An emergency power supply system characterized in that:
る場合において、前記太陽電池の出力電力量が前記負荷
の消費電力量よりも小さいときは、その不足電力量を前
記蓄電池から供給すると共に、前記太陽電池の出力電力
量が前記負荷の消費電力量よりも大きいときは、その余
剰電力を前記蓄電池へ充電することを特徴とする請求項
１に記載の非常用電源システム。2. When power is supplied from the solar cell to the load, when the output power of the solar cell is smaller than the power consumption of the load, the power shortage is supplied from the storage battery, The emergency power supply system according to claim 1, wherein when the output power of the solar cell is larger than the power consumption of the load, the surplus power is charged to the storage battery.
する場合、前記太陽電池の出力電力を前記商用電力系統
に逆潮流させることを特徴とする非常用電源システム。3. An emergency power supply system, wherein when the storage battery is charged from the commercial power system, output power of the solar cell is caused to flow backward to the commercial power system.
する場合、その深夜電力で前記蓄電池を充電することを
特徴とする請求項１に記載の非常用電源システム。4. The emergency power supply system according to claim 1, wherein when charging the storage battery from the commercial power system, the storage battery is charged with the late-night power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9140137A JPH10336916A (en) | 1997-05-29 | 1997-05-29 | Power supply system for emergency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9140137A JPH10336916A (en) | 1997-05-29 | 1997-05-29 | Power supply system for emergency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10336916A true JPH10336916A (en) | 1998-12-18 |
Family
ID=15261750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9140137A Pending JPH10336916A (en) | 1997-05-29 | 1997-05-29 | Power supply system for emergency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10336916A (en) |
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| WO2012117838A1 (en) * | 2011-03-02 | 2012-09-07 | ソニー株式会社 | Charger, charging system, and charging method |
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| JP2015186427A (en) * | 2014-03-26 | 2015-10-22 | 大和ハウス工業株式会社 | power supply system |
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