情報

What Factors Affect The Output Power Of Solar Photovoltaic Modules


Solar modules are the core part of solar power systems.
Its function is to convert solar energy into electrical energy and send it to the battery for storage to facilitate the work of the load.
As an important part of photovoltaic modules, the output power of solar cables is very important.

それで, what factors will affect the maximum output power of solar modules?

1. Temperature characteristics of solar modules Photovoltaic modules generally have three temperature coefficients: open circuit voltage, short circuit current, and peak power.

When the temperature rises, the output power of PV modules will drop. The peak temperature coefficient of mainstream crystalline silicon photovoltaic modules on the market is about -0.38-0.44%/C, that is, for every degree of temperature increase, the power generation of photovoltaic modules decreases by about 0.38%.

The temperature coefficient of thin-film solar cells is much better. 例えば, the temperature coefficient of copper steel selenium (CIGS) is only -0.1-0.3%, and the temperature coefficient of cadmium (CdTe) is about -0.25%, which is better than that of crystalline silicon cells.

2. Module aging and attenuation In the long-term application of photovoltaic modules, there will be slow power attenuation. The maximum decay is about 3% in the first year, and the annual decay rate for the next 24 years is about 0.7%.

From this calculation, the actual power of photovoltaic modules can still reach about 80% of the initial power after 25 年.

3. Coverage of dust and rain Large-scale photovoltaic power plants are generally built in the Gobi area, where the wind and sand are relatively large and there is little precipitation. 同時に, the frequency of cleaning is not too high.

After long-term use, it will cause an efficiency loss of about 8%. Mismatched modules in series solar modules are mismatched when connected in series, which can be intuitively explained by the cask effect.

The amount of water in the barrel is limited by the shortest wooden board, and the output current of the photovoltaic module is limited by the lowest current in the series module.

実際には, there will be a certain power deviation between components, so component mismatch will cause a certain power loss.

The above three points are the main factors affecting the maximum output power of photovoltaic cell modules, which will cause long-term power loss.

したがって, the later operation and maintenance of photovoltaic power plants are very important, which can effectively reduce the loss of benefits caused by failures.

    zmswacables

    Recent Posts

    嵐と洪水! 防水ケーブルが電力を保護する方法?

    Introduction In recent years, heavy rainfall and flooding have become increasingly frequent worldwide, causing severe

    3 weeks ago

    循環経済におけるケーブル業界の役割と課題

    持続可能性が世界的な優先事項となるように、はじめに, industries across the spectrum are reevaluating their operations

    2 months ago

    ケーブル業界はグローバルなサプライチェーンの課題にどう対処できるか?

    グローバルサプライチェーンは、メーカーを接続する複雑で必須のネットワークです, ディストリビューター, 小売業者,…

    3 months ago

    再生可能エネルギーがケーブル需要に与える影響

    Introduction The global shift toward renewable energy has become a cornerstone of efforts to combat

    3 months ago

    世界のケーブル市場動向予測 2025

    世界のケーブル市場は幅広い業界にとって不可欠です, エネルギーも含めて, 電気通信,…

    3 months ago

    AIとブロックチェーン: ケーブルの製造と管理に革命を起こす

    ケーブル製造業, グローバルインフラストラクチャの基礎, 変革的なシフトを受けています. の…

    3 months ago