JP2001068706A - Solar cell device - Google Patents
Solar cell deviceInfo
- Publication number
- JP2001068706A JP2001068706A JP23897699A JP23897699A JP2001068706A JP 2001068706 A JP2001068706 A JP 2001068706A JP 23897699 A JP23897699 A JP 23897699A JP 23897699 A JP23897699 A JP 23897699A JP 2001068706 A JP2001068706 A JP 2001068706A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- detecting
- failure
- voltage
- backflow prevention
- 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
- 238000001514 detection method Methods 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 17
- 230000003449 preventive effect Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 description 10
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- 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
- Y02B10/10—Photovoltaic [PV]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Photovoltaic Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、太陽電池モジュ
ールの動作状態を簡単に検出可能な太陽電池装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell device capable of easily detecting the operating state of a solar cell module.
【０００２】[0002]
【従来の技術】近年、地球環境問題から屋外に設置して
光起電力を発生させる太陽電池装置が注目されており、
屋根などに太陽電池装置を設置し、その発電電力により
日中の消費電力を賄うようにした太陽光発電システムが
実用化されている。2. Description of the Related Art In recent years, solar cell devices that are installed outdoors to generate photovoltaic power have been receiving attention due to global environmental problems.
2. Description of the Related Art A photovoltaic power generation system in which a solar cell device is installed on a roof or the like and the power generated by the photovoltaic device covers daytime power consumption has been put to practical use.
【０００３】一般に太陽電池装置は、製造を容易にした
り、設置箇所への輸送を容易にしたりするために適当な
大きさの太陽電池モジュールとして形成され、この太陽
電池モジュールを直並列に配線し、架台上に所定数の太
陽電池モジュールを設置している。この太陽電池モジュ
ールには、複数の太陽電池素子が直列に接続され、所定
の電圧を出力するように構成されている。[0003] In general, a solar cell device is formed as a solar cell module of an appropriate size for facilitating manufacture and transport to an installation location, and the solar cell modules are wired in series and parallel. A predetermined number of solar cell modules are installed on a gantry. In this solar cell module, a plurality of solar cell elements are connected in series, and are configured to output a predetermined voltage.
【０００４】上記太陽電池モジュールは接続箱内等で互
いに並列に接続され、その電力がインバータ装置に与え
られる。太陽電池装置で発電された電力は直流電力であ
るので、家庭用電源に用いるため、インバータ装置によ
り直流電力が交流電力に変換して用いられる。[0004] The solar cell modules are connected in parallel in a junction box or the like, and the electric power is supplied to an inverter device. Since the power generated by the solar cell device is DC power, the DC power is converted into AC power by an inverter device for use in a home power supply, and is used.
【０００５】ところで、上記した太陽電池装置におい
て、太陽電池モジュールが故障して、出力が異常になっ
た場合、故障場所を検出し、修理などを行うことが必要
となる。In the above-described solar cell device, when the solar cell module fails and the output becomes abnormal, it is necessary to detect the location of the failure and perform repair or the like.
【０００６】この太陽電池モジュールの動作状態を検出
する装置が特開平６−１２５１０５号公報に開示されて
いる。この装置は、図２に示すように、太陽電池モジュ
ール１００内部に、複数の太陽電池セル１０１、バイパ
スダイオード１０２及び磁力発生手段１０３が設けれて
いる。An apparatus for detecting the operation state of the solar cell module is disclosed in Japanese Patent Application Laid-Open No. Hei 6-125105. In this device, as shown in FIG. 2, a plurality of solar cells 101, a bypass diode 102, and a magnetic force generating means 103 are provided inside a solar cell module 100.
【０００７】このように構成された太陽電池モジュール
１００を複数台直列に接続した太陽電池アレイにおい
て、太陽電池セル１０１が故障し、太陽電池セルの電圧
が低下すると、外部よりバイパスダイオード１０２に太
陽電池アレイの出力電流が流れる。この電流が磁力発生
手段３に流れることにより磁界が発生する。太陽電池セ
ルが故障していなければ、磁力発生手段１０３には電流
が流れず、磁界が発生しないので、太陽電池モジュール
の外部からこの磁界を検出することにより、発電状態ま
たは故障状態を検出することができる。In a solar cell array in which a plurality of solar cell modules 100 configured as described above are connected in series, when the solar cell 101 fails and the voltage of the solar cell decreases, the solar cell is externally supplied to the bypass diode 102. The output current of the array flows. When this current flows through the magnetic force generating means 3, a magnetic field is generated. If the photovoltaic cell has not failed, no current flows through the magnetic force generating means 103 and no magnetic field is generated. Therefore, by detecting this magnetic field from outside the photovoltaic module, it is possible to detect the power generation state or the failure state. Can be.
【０００８】[0008]
【発明が解決しようとする課題】上記した方法によれ
ば、電流に応じて磁界が発生し、その磁界を検出するこ
とにより、太陽電池モジュールが正常に発電している
か、または故障しているか検出することができる。According to the above-mentioned method, a magnetic field is generated in response to an electric current, and by detecting the magnetic field, it is determined whether the solar cell module is generating power normally or has failed. can do.
【０００９】しかしながら、上記した方法では、磁界を
検出するために、磁針などを用いて太陽電池モジュール
の近くにて検針する必要があり、屋根などに太陽電池装
置が設置されている場合には、その場所まで検査保守要
員が行く必要があり、故障検出作業が煩わしいという難
点があった。However, in the above-described method, it is necessary to detect a magnetic field near a solar cell module using a magnetic needle or the like in order to detect a magnetic field. When a solar cell device is installed on a roof or the like, Inspection and maintenance personnel have to go to that location, and there is a problem that trouble detection work is troublesome.
【００１０】この発明は、屋根や壁面に設置された太陽
電池モジュールの故障及びその故障モジュールを容易に
検出することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to easily detect a failure of a solar cell module installed on a roof or a wall and the failure module.
【００１１】[0011]
【課題を解決するための手段】この発明は、複数の太陽
電池モジュールを逆流防止ダイオードを介して接続した
太陽電池装置において、前記逆流防止ダイオードの両端
電圧を検出する手段と、この検出手段からの出力に応じ
てオンオフするスイッチング手段と、スイッチング手段
の出力に応じて故障の有無を検出する故障検出手段と、
を備えたことを特徴とする。SUMMARY OF THE INVENTION The present invention relates to a solar cell device in which a plurality of solar cell modules are connected via a backflow prevention diode, means for detecting a voltage between both ends of the backflow prevention diode, Switching means for turning on and off according to the output, failure detection means for detecting the presence or absence of a failure according to the output of the switching means,
It is characterized by having.
【００１２】前記故障検出手段は、前記スイッチング手
段の出力に応じて電流が供給される発振手段と、この発
振手段の周波数を検出して故障の有無を判別する手段
と、を備えるように構成するとよい。The fault detecting means may include an oscillating means to which a current is supplied according to the output of the switching means, and means for detecting the frequency of the oscillating means to determine the presence or absence of a fault. Good.
【００１３】太陽電池モジュールの故障が発生すると、
太陽電池モジュールから逆流防止ダイオードへは電力が
供給されない。このため、逆流防止ダイオードの両端電
圧が０になる。また、太陽電池モジュールの一部が影に
なった時のように、太陽電池モジュールの出力電圧が著
しく低下した時は、逆流防止ダイオードの両端電圧の極
性が逆転する。両端電圧が０になったり極性が逆転した
ことを電圧検出手段が検出すると、その検出結果により
スイッチング手段はオンになり、発振手段がケーブルに
接続され、発振ノイズがケーブルに重畳される。この発
振ノイズを検出することで、故障を判別できる。When a failure of a solar cell module occurs,
No power is supplied from the solar cell module to the backflow prevention diode. Therefore, the voltage across the backflow prevention diode becomes zero. Also, when the output voltage of the solar cell module drops significantly, such as when a part of the solar cell module is shaded, the polarity of the voltage across the backflow prevention diode is reversed. When the voltage detecting means detects that the voltage at both ends has become zero or the polarity has been reversed, the switching means is turned on by the detection result, the oscillating means is connected to the cable, and oscillation noise is superimposed on the cable. A failure can be determined by detecting this oscillation noise.
【００１４】前記発振手段は、一つの逆流防止ダイオー
ドに接続されている太陽電池モジュール毎に異なる周波
数を発振するように構成するとよい。The oscillating means may be configured to oscillate a different frequency for each solar cell module connected to one backflow prevention diode.
【００１５】発振周波数を変えることで、どの太陽電池
モジュールが故障したか容易に判断できる。By changing the oscillation frequency, it is possible to easily determine which solar cell module has failed.
【００１６】[0016]
【発明の実施の形態】以下、この発明の実施の形態につ
き図面を参照して説明する。図１に示すように、太陽電
池モジュール１０は、内部に単結晶シリコン、多結晶シ
リコン、非晶質シリコンなどで構成された太陽電池セル
を複数個直列に接続されて構成されている。また、各太
陽電池モジュール１０にはバイパスダイオード１１が設
けられている。太陽電池モジュール１０を複数個直列に
接続したものが太陽電池ストリング１である。尚、一個
の太陽電池モジュール１０で所定の電圧が得られる場合
には、１つの太陽電池モジュール１０が太陽電池ストリ
ング１となる。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the solar cell module 10 is configured by connecting a plurality of solar cells, each of which is made of single crystal silicon, polycrystalline silicon, amorphous silicon, or the like, in series. Each solar cell module 10 is provided with a bypass diode 11. The solar cell string 1 is formed by connecting a plurality of solar cell modules 10 in series. When a predetermined voltage is obtained with one solar cell module 10, one solar cell module 10 becomes the solar cell string 1.
【００１７】前記太陽電池ストリング１は、ケーブルに
より複数個並列に接続され、直流電力を交流電力へ変換
するためのインバータ装置２に接続される。各太陽電池
ストリング１からの一方のケーブルは、接続箱３内でそ
れぞれ逆流防止ダイオード４を介して互いに並列接続さ
れ、インバータ装置２の一方の端子に接続されている。
また、太陽電池ストリング１の逆流防止ダイオード４の
出力側には発振回路を備えた発振手段５の一端が接続さ
れ、この発振手段５の他端はスイッチ手段６を介して太
陽電池ストリング１の他方のケーブルに接続されてい
る。A plurality of solar cell strings 1 are connected in parallel by a cable, and connected to an inverter device 2 for converting DC power into AC power. One cable from each solar cell string 1 is connected in parallel to each other via a backflow prevention diode 4 in the connection box 3, and is connected to one terminal of the inverter device 2.
One end of an oscillating means 5 having an oscillating circuit is connected to the output side of the backflow prevention diode 4 of the solar cell string 1, and the other end of the oscillating means 5 is connected to the other end of the solar cell string 1 via a switch means 6. Connected to the cable.
【００１８】逆流防止ダイオード４の両端には、逆流防
止ダイオード４の両端電圧を検出すための電圧検出手段
７が設けられ、この検出手段７からの出力により、前記
スイッチ手段６がオン／オフする。このスイッチング手
段６は、電圧検出手段７が所定電圧を検出しているとき
にはオフになり、両端電圧が０または極性が逆転したこ
とを検出したときにオンになる。At both ends of the backflow prevention diode 4, voltage detection means 7 for detecting the voltage between both ends of the backflow prevention diode 4 is provided, and the output from the detection means 7 turns on / off the switch means 6. . The switching means 6 is turned off when the voltage detecting means 7 is detecting a predetermined voltage, and is turned on when it is detected that the voltage at both ends is 0 or the polarity is reversed.
【００１９】太陽電池ストリング１からインバータ装置
２へ接続されるケーブルに検出回路装置８が取り付けら
れ、この検出回路装置８からの出力に応じて、表示装置
９が各太陽電池ストリング１…が正常に運転にしている
か、故障などの不具合があるかを表示する。この表示装
置９は、屋内など表示内容が容易に見られるところに設
置すればよい。A detection circuit device 8 is attached to a cable connected from the solar cell string 1 to the inverter device 2, and according to the output from the detection circuit device 8, the display device 9 causes each of the solar cell strings 1 to operate normally. Displays whether the vehicle is in operation or has a malfunction such as a failure. The display device 9 may be installed in a place where display contents can be easily seen, such as indoors.
【００２０】太陽電池ストリング１に接続される逆流防
止ダイオード４の両端電圧を検出する電圧検出手段７
は、太陽電池ストリング１の発電状態による電圧を検出
することになる。即ち、太陽電池ストリング１に含まれ
る太陽電池モジュール１０の故障が発生すると、太陽電
池ストリング１から逆流防止ダイオード４へは電力が供
給されない。このため、逆流防止ダイオード４の両端電
圧が０または負になる。両端電圧が０または極性が逆転
したことを電圧検出手段７が検出すると、その検出結果
によりスイッチング手段６はオンになり、発振手段５が
ケーブルに接続される。Voltage detecting means 7 for detecting the voltage across the backflow preventing diode 4 connected to the solar cell string 1
Means to detect the voltage due to the power generation state of the solar cell string 1. That is, when the failure of the solar cell module 10 included in the solar cell string 1 occurs, power is not supplied from the solar cell string 1 to the backflow prevention diode 4. For this reason, the voltage across the backflow prevention diode 4 becomes 0 or negative. When the voltage detecting means 7 detects that the voltage at both ends is 0 or the polarity is reversed, the switching means 6 is turned on by the detection result, and the oscillating means 5 is connected to the cable.
【００２１】電圧が０または極性が逆転して、スイッチ
ング手段６がオンになると、並列に接続された他の太陽
電池ストリング１から発振手段５に電源が供給され、発
振手段５が発振する。発振手段５から発振された発振ノ
イズはケーブルに重畳される。検出回路装置８はケーブ
ルに重畳された発振ノイズを検出することで、太陽電池
ストリング１に含まれる太陽電池モジュール１０に故障
が発生したことを検出できる。When the voltage is 0 or the polarity is reversed and the switching means 6 is turned on, power is supplied to the oscillating means 5 from another solar cell string 1 connected in parallel, and the oscillating means 5 oscillates. The oscillation noise oscillated from the oscillating means 5 is superimposed on the cable. The detection circuit device 8 can detect that a failure has occurred in the solar cell module 10 included in the solar cell string 1 by detecting the oscillation noise superimposed on the cable.
【００２２】そして、各太陽電池ストリング１…に設置
する発振手段５の発振周波数をそれぞれ変えておくこと
で、どの太陽電池ストリング１…が故障したかを検出回
路装置８は判別できる。By changing the oscillation frequency of the oscillating means 5 installed in each of the solar cell strings 1, the detection circuit device 8 can determine which of the solar cell strings 1 has failed.
【００２３】なお、複数の太陽電池ストリング１…が同
時に故障した場合には、複数の発振手段５からの発振ノ
イズがケーブルに重畳されることになるが、検出回路装
置８内にそれぞれの発振周波数に応じたバンドパスフィ
ルタ等を設け、そのフィルタからの出力を監視するよう
に構成することで、どの太陽電池ストリング１…が故障
したかを判別することができる。If a plurality of solar cell strings 1 fail at the same time, oscillation noise from the plurality of oscillating means 5 will be superimposed on the cable. Is provided and the output from the filter is monitored so that it is possible to determine which of the solar cell strings 1 has failed.
【００２４】また、上記した実施の形態においては、発
振手段５を設けているが、スイッチング手段６のオン／
オフに応じて検出回路装置８にそのオン／オフ信号を与
えるように構成すれば、発振手段５を設けなくても故障
を検出することが可能となる。ただ、発振手段５からの
信号をケーブルに重畳させる構成であれば、検出回路装
置８までのケーブルをインバータ装置２間での電力ケー
ブルと兼用できるが、スイッチング手段６から検出回路
装置８へ直接信号を与えるためには、検出回路装置８ま
での配線等が必要になる。In the above embodiment, the oscillating means 5 is provided.
If the ON / OFF signal is provided to the detection circuit device 8 in response to the OFF, the failure can be detected without providing the oscillation means 5. However, if the signal from the oscillating means 5 is superimposed on the cable, the cable up to the detection circuit device 8 can also be used as the power cable between the inverter devices 2. In this case, wiring to the detection circuit device 8 and the like are required.
【００２５】[0025]
【発明の効果】以上説明したように、この発明によれ
ば、逆流防止ダイオードの両端電圧を検出し、その検出
結果に応じてスイッチング手段がオン／オフする。この
スイッチング手段のオン／オフ動作に基づき、故障の有
無を判断することで、容易に太陽電池モジュールの故障
を判別できる。そして、スイッチング手段がオンしたと
き発振手段を他の太陽電池モジュールからの電力により
駆動し、ケーブルに重畳された発振ノイズを判別するこ
とで、太陽電池モジュールの故障を判別でき、故障判別
等の保守が容易に行える。As described above, according to the present invention, the voltage across the backflow prevention diode is detected, and the switching means is turned on / off in accordance with the detection result. By determining the presence or absence of a failure based on the on / off operation of the switching means, the failure of the solar cell module can be easily determined. When the switching means is turned on, the oscillating means is driven by the power from another solar cell module, and by determining the oscillation noise superimposed on the cable, the failure of the solar cell module can be determined, and maintenance such as failure determination can be performed. Can be easily performed.
【図１】この発明にかかる太陽電池装置の一実施の形態
を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of a solar cell device according to the present invention.
【図２】従来の太陽電池装置の構成を示すブロック図で
ある。FIG. 2 is a block diagram showing a configuration of a conventional solar cell device.
１ 太陽電池ストリング ２ インバータ装置 ３ 接続箱 ４ 逆流防止ダイオード ５ 発振手段 ６ スイッチング手段 ７ 電圧検出手段 ８ 検出回路装置 ９ 表示装置 １０太陽電池モジュール DESCRIPTION OF SYMBOLS 1 Solar cell string 2 Inverter device 3 Connection box 4 Backflow prevention diode 5 Oscillation means 6 Switching means 7 Voltage detection means 8 Detection circuit device 9 Display device 10 Solar cell module
Claims (3)
イオードを介して接続した太陽電池装置において、前記
逆流防止ダイオードの両端電圧を検出する手段と、この
検出手段からの出力に応じてオンオフするスイッチング
手段と、スイッチング手段の出力に応じて故障の有無を
検出する故障検出手段と、を備えたことを特徴とする太
陽電池装置。In a solar cell device in which a plurality of solar cell modules are connected via a backflow prevention diode, means for detecting a voltage between both ends of the backflow prevention diode, and switching means for turning on / off in response to an output from the detection means. And a failure detecting means for detecting the presence or absence of a failure according to the output of the switching means.
手段の出力に応じて電流が供給される発振手段と、この
発振手段の周波数を検出して故障の有無を判別する手段
と、を備えることを特徴とする請求項１に記載の太陽電
池装置。2. The fault detecting means includes: an oscillating means to which a current is supplied according to an output of the switching means; and a means for detecting a frequency of the oscillating means to determine the presence or absence of a fault. The solar cell device according to claim 1, wherein:
ードに接続されている太陽電池モジュール毎に異なる周
波数を発振することを特徴とする請求項２に記載の太陽
電池装置。3. The solar cell device according to claim 2, wherein the oscillating unit oscillates a different frequency for each solar cell module connected to one backflow prevention diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23897699A JP2001068706A (en) | 1999-08-25 | 1999-08-25 | Solar cell device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23897699A JP2001068706A (en) | 1999-08-25 | 1999-08-25 | Solar cell device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001068706A true JP2001068706A (en) | 2001-03-16 |
Family
ID=17038097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23897699A Pending JP2001068706A (en) | 1999-08-25 | 1999-08-25 | Solar cell device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001068706A (en) |
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