【0001】[0001]
【発明の属する技術分野】本発明は複数の太陽電池素子
(セル)を直列又は直並列に接続して成る太陽電池モジ
ュールの発電電力を出力できるようにした太陽電池装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell device capable of outputting power generated by a solar cell module comprising a plurality of solar cell elements (cells) connected in series or in series / parallel.
【0002】[0002]
【従来技術とその課題】現在、太陽電池の直流出力をイ
ンバータにて交流に変換し、これを商用電力系統と連系
するいわゆる系統連系システムが実用化されている。例
えば、図5に示すように、この種の系統連系システム1
は、一枚のガラス板などに複数のセルを直列または直並
列接続させて貼り付けて成る太陽電池モジュール2を直
列接続し、これら太陽電池モジュール2の発電により得
た直流出力は、インバータ3にて例えば100Vの交流
に変換され、商用電力系統4と連系させていた。2. Description of the Related Art At present, a so-called system interconnection system for converting a DC output of a solar cell into an AC by an inverter and interconnecting the AC with a commercial power system has been put to practical use. For example, as shown in FIG.
Connects a plurality of cells in series or series-parallel to a single glass plate or the like and connects the solar cell modules 2 in series, and a DC output obtained by power generation of these solar cell modules 2 is supplied to an inverter 3. For example, it is converted to an AC of 100 V, and is connected to the commercial power system 4.
【0003】このような系統連系システム1では、イン
バータ3を起動させるための直流入力電圧が150V以
上は必要であるので、複数の太陽電池モジュール2が直
列に接続されて使用されている。In such a system interconnection system 1, since a DC input voltage of 150 V or more for starting the inverter 3 is required, a plurality of solar cell modules 2 are used in series.
【0004】このため、太陽電池モジュール2の必要最
低直列数に制限が生じ、小さな容量のシステムが構成出
来ないという問題があった。[0004] For this reason, the required minimum number of solar cell modules 2 in series is limited, and there is a problem that a system having a small capacity cannot be configured.
【0005】また、1枚の太陽電池モジュール2が何ら
かの原因により故障したり、太陽電池モジュール2の受
光面が何かの影になった場合には、直列に接続されてい
る太陽電池モジュール2の全てが使用出来なくなった
り、発電効率が低下するという問題があった。If one solar cell module 2 fails for some reason or the light receiving surface of the solar cell module 2 is shaded, the solar cell module 2 connected in series will be damaged. There has been a problem that all of them cannot be used or the power generation efficiency decreases.
【0006】さらに、太陽電池モジュール2は太陽光等
の光が照射されることにより発電する特性であるため
に、例えばインバータ3との接続工事等の際には高電圧
が発生している場合が多く、感電等の危険があった。Further, since the solar cell module 2 has a characteristic of generating power when irradiated with light such as sunlight, a high voltage may be generated, for example, at the time of connection work with the inverter 3 or the like. There were many dangers such as electric shock.
【0007】本発明は上述した従来の問題点に鑑みてな
されたものであり、太陽電池モジュールの発電電力を有
効に利用できるとともに、工事等の際の安全性に優れた
太陽電池装置を提供することを目的とするものである。The present invention has been made in view of the above-mentioned conventional problems, and provides a solar cell device which can effectively utilize the power generated by a solar cell module and which is excellent in safety during construction and the like. The purpose is to do so.
【0008】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明の太陽電池モジュールは、複数の太陽電池素
子から成る太陽電池モジュールと該太陽電池モジュール
の直流出力を昇圧して出力するコンバータとを備え、該
コンバータが該太陽電池モジュールの非受光面側に配置
されることを特徴とする。In order to achieve the above object, a solar cell module according to the present invention comprises a solar cell module comprising a plurality of solar cell elements and a converter for boosting and outputting a DC output of the solar cell module. Wherein the converter is disposed on the non-light-receiving surface side of the solar cell module.
【0009】この手段によれば、太陽電池モジュールの
非受光面側に太陽電池の出力を昇圧させるコンバータを
備えるため、太陽電池モジュールを直列に接続すること
なく任意の直流出力を得ることが可能となる。According to this means, since a converter for increasing the output of the solar cell is provided on the non-light-receiving surface side of the solar cell module, it is possible to obtain an arbitrary DC output without connecting the solar cell modules in series. Become.
【0010】また、本発明においては太陽電池装置の出
力電圧を例えば150V以上とすることにより、系統連
系システムにおいて、一枚の太陽電池装置の出力を直接
インバータに入力可能となり、また太陽電池装置は並列
に接続して使用されるため、影の影響を受けにくくなる
ものである。Further, in the present invention, by setting the output voltage of the solar cell device to, for example, 150 V or more, the output of one solar cell device can be directly input to the inverter in the system interconnection system. Are connected in parallel, and are therefore less susceptible to shadows.
【0011】また、太陽電池装置は、コンバータに接続
される外部機器からの起動信号を受信することにより、
コンバータの出力を開始することを特徴とする。これに
より接続工事等の際には太陽電池装置からの出力は無
く、工事作業時の安全が図れるものである。Further, the solar cell device receives a start signal from an external device connected to the converter,
The output of the converter is started. As a result, there is no output from the solar cell device during connection work or the like, and safety during the work can be achieved.
【0012】さらに起動信号の通信をコンバータの出力
線にて行うことを特徴とする。これにより通信のための
専用線が不要となり、コストダウン、配線作業の簡素化
が図れるものである。Further, the communication of the start signal is performed by the output line of the converter. This eliminates the need for a dedicated line for communication, thereby reducing costs and simplifying wiring work.
【0013】[0013]
【発明の実施の形態】以下に、本発明の太陽電池装置に
ついて、図面に基づき詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a solar cell device according to the present invention will be described in detail with reference to the drawings.
【0014】図1(a),(b)に示すように、透光性
を有するガラスやプラスチックス等の基板に、複数のセ
ル(太陽電池素子)6を直並列に接続して貼り付けて構
成した太陽電池モジュール2の裏面に、太陽電池モジュ
ール2の出力を所定電圧に昇圧するコンバータ5を、太
陽電池モジュールの出力端子に接続している。As shown in FIGS. 1 (a) and 1 (b), a plurality of cells (solar cell elements) 6 are connected in series and parallel to a light-transmitting substrate such as glass or plastics. A converter 5 that boosts the output of the solar cell module 2 to a predetermined voltage is connected to an output terminal of the solar cell module 2 on the back surface of the configured solar cell module 2.
【0015】太陽電池モジュール2による出力電圧は1
0〜50V程度であり、この出力電力は数十W〜200
W程度となるが、本発明においてはコンバータ5からの
出力電圧を150V以上になるように構成すると良い。The output voltage of the solar cell module 2 is 1
0 to 50 V, and the output power is several tens of W to 200
Although it is about W, it is preferable in the present invention that the output voltage from the converter 5 be 150 V or more.
【0016】図2に示すように、太陽電池装置7の直流
出力をインバータ3にて交流に変換し、商用電力系統4
に連系させて系統連系システム1を構成している。ここ
で、太陽電池装置7の出力を150V以上とすることに
より、太陽電池装置7の出力を直接インバータ3に入力
することが可能であり、1枚の太陽電池モジュール単位
での系統連系が可能となる。As shown in FIG. 2, the DC output of the solar cell device 7 is converted into AC by the inverter 3 and
To form a system interconnection system 1. Here, by setting the output of the solar cell device 7 to 150 V or more, the output of the solar cell device 7 can be directly input to the inverter 3, and system interconnection can be performed in units of one solar cell module. Becomes
【0017】また、太陽電池装置7の出力端子を並列接
続とすることにより、数十W〜数十kWの系統連系シス
テムを構成できるが、複数の太陽電池装置7の一部が影
になったり故障した場合においても、並列接続であるた
めに、影の部分の太陽電池装置7のみ出力が低下し、シ
ステム全体の出力を効率よく取り出すことが可能とな
り、影の影響を受けにくい系統連系システムを提供でき
るものである。Further, by connecting the output terminals of the solar cell devices 7 in parallel, a system interconnection system of several tens of watts to several tens of kW can be constructed, but some of the plurality of solar cell devices 7 are shaded. Even in the case of a failure, the output is reduced only in the solar cell device 7 in the shaded portion due to the parallel connection, and the output of the entire system can be efficiently taken out. A system can be provided.
【0018】また、図3に示すように、コンバータ5に
接続されるインバータ3等の外部機器の起動信号送信機
8からの矢印Aの起動信号を受けることにより、コンバ
ータ5からの矢印Bの出力を開始するように構成すると
よい。As shown in FIG. 3, when an activation signal of an arrow A is received from an activation signal transmitter 8 of an external device such as an inverter 3 connected to the converter 5, an output of an arrow B from the converter 5 is received. May be configured to start.
【0019】太陽電池モジュールは太陽光等の光を受光
して発電するが、本発明の太陽電池装置においては、コ
ンバータの出力側に接続されるインバータ等から発信さ
れる起動信号を受信するまでコンバータの動作を停止さ
せ、無出力状態に保つよう制御されている。そのため、
接続工事等の取扱時においては無出力状態にあり、取扱
者に対しての安全が確実に図れる。The solar cell module receives light, such as sunlight, and generates power. In the solar cell device of the present invention, the converter operates until a start signal transmitted from an inverter or the like connected to the output side of the converter is received. Is stopped so that no output is maintained. for that reason,
During handling such as connection work, there is no output, and safety for the operator can be ensured.
【0020】また、図4に示すように、起動信号の受信
はコンバータ5の出力線を使用することも可能であり、
すなわち、出力線を信号線としても使用するようにして
もよく、これにより、例えば搬送波による通信を行う方
式を採用することができる。ここで、図中矢印Aが起動
信号の流れであり、矢印Bが出力を示す。As shown in FIG. 4, the start signal can be received by using the output line of the converter 5.
That is, the output line may be used also as a signal line, and thereby, for example, a method of performing communication using a carrier wave can be adopted. Here, the arrow A in the figure indicates the flow of the activation signal, and the arrow B indicates the output.
【0021】この方式にて通信を行うことにより、コン
バータ5とインバータ3等の外部機器との間において、
通信用の専用線を設ける必要がなく、またコンバータ5
の運転中においても、太陽電池の発電量等のデータ通信
を行うことも可能となる。By performing communication in this manner, between the converter 5 and an external device such as the inverter 3,
There is no need to provide a dedicated line for communication, and the converter 5
It is also possible to perform data communication such as the amount of power generated by the solar cell during the operation of.
【0022】[0022]
【発明の効果】以上詳述したように、本発明の太陽電池
装置によれば、複数の太陽電池素子から成る太陽電池モ
ジュールと該太陽電池モジュールの直流出力を昇圧して
出力するコンバータとを備え、コンバータが太陽電池モ
ジュールの非受光面側に配置されるため、太陽電池装置
全体を小型にすることができる上に、太陽電池モジュー
ルを直列に接続することなく任意の直流出力を得ること
が可能となる。特に、太陽電池装置の出力電圧を150
V以上とすることにより、太陽電池装置の出力を直接イ
ンバータ等に入力可能となり、また太陽電池装置は並列
に接続して使用されるため、影の影響を受けにくくな
る。As described above in detail, according to the solar cell device of the present invention, a solar cell module comprising a plurality of solar cell elements and a converter for boosting and outputting a DC output of the solar cell module are provided. Since the converter is arranged on the non-light-receiving side of the solar cell module, the entire solar cell device can be downsized, and any DC output can be obtained without connecting the solar cell modules in series. Becomes In particular, the output voltage of the solar cell device is set to 150
By setting the voltage to V or more, the output of the solar cell device can be directly input to an inverter or the like, and since the solar cell devices are connected and used in parallel, they are less affected by shadows.
【0023】また、コンバータに接続される外部機器か
らの信号を受信することにより、コンバータの出力を開
始することとしたため、接続工事等の際には太陽電池装
置からの出力は無く、工事作業時の安全が図れる。Also, since the output of the converter is started by receiving a signal from an external device connected to the converter, there is no output from the solar battery device at the time of connection work or the like. Safety can be achieved.
【0024】さらに、起動信号の通信はコンバータの出
力線にて行うこととしたため、通信のための専用線が不
要となり、配線作業の簡素化が図れる。Further, since the communication of the start signal is performed through the output line of the converter, a dedicated line for communication is not required, and the wiring work can be simplified.
【0025】以上により、太陽電池モジュールの発電電
力を有効に利用できるとともに、工事等の際の安全性に
優れ、配線が簡単で小型の優れた太陽電池装置を提供す
ることができる。As described above, it is possible to provide a small-sized solar cell device which can effectively utilize the power generated by the solar cell module, is excellent in safety at the time of construction, etc., is simple in wiring, and is small in size.
【図1】本発明に係る太陽電池装置の実施の形態を模式
的に説明する図であり、(a)は太陽電池装置の受光面
側の様子を示す斜視図、(b)は太陽電池装置の非受光
面側の様子を示す斜視図である。1A and 1B are diagrams schematically illustrating an embodiment of a solar cell device according to the present invention, wherein FIG. 1A is a perspective view illustrating a state on a light receiving surface side of the solar cell device, and FIG. FIG. 3 is a perspective view showing a state on the non-light receiving surface side of FIG.
【図2】本発明に係る太陽電池装置の一実施形態の回路
構成図である。FIG. 2 is a circuit configuration diagram of one embodiment of a solar cell device according to the present invention.
【図3】本発明に係る太陽電池装置の他の実施形態の回
路構成図である。FIG. 3 is a circuit configuration diagram of another embodiment of the solar cell device according to the present invention.
【図4】本発明に係る太陽電池装置の他の実施形態の回
路構成図である。FIG. 4 is a circuit configuration diagram of another embodiment of the solar cell device according to the present invention.
【図5】従来の太陽電池を利用した系統連系システムの
形態を示す回路構成図である。FIG. 5 is a circuit configuration diagram showing a form of a system interconnection system using a conventional solar cell.
1:系統連系システム 2:太陽電池モジュール 3:インバータ 4:商用電力系統 5:コンバータ 6:太陽電池素子 7:太陽電池装置 8:起動信号送信機 1: System interconnection system 2: Solar cell module 3: Inverter 4: Commercial power system 5: Converter 6: Solar cell element 7: Solar cell device 8: Start signal transmitter
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37165199AJP2001189476A (en) | 1999-12-27 | 1999-12-27 | Solar cell equipment |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37165199AJP2001189476A (en) | 1999-12-27 | 1999-12-27 | Solar cell equipment |
| Publication Number | Publication Date |
|---|---|
| JP2001189476Atrue JP2001189476A (en) | 2001-07-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37165199AWithdrawnJP2001189476A (en) | 1999-12-27 | 1999-12-27 | Solar cell equipment |
| Country | Link |
|---|---|
| JP (1) | JP2001189476A (en) |
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