電子部品サプライヤー | トランスフォーマー, インダクタ, インバータ
Neglected photovoltaic core equipment
With the continuous explosive growth of global photovoltaic installed capacity in 2026, 業界ではモジュールとインバータに焦点が当てられることが多い, but a key equipment is often overlooked – solar transformers.
In modern photovoltaic systems, transformers not only undertake the basic function of voltage conversion, but also gradually evolve into intelligent, digital, and monitored key node devices, playing a core role in improving grid stability, system efficiency, and energy dispatch capabilities.
What is a photovoltaic transformer?
Photovoltaic transformers are mainly used for:
- Step up the low-voltage AC power (usually 400V-800V) output by the inverter
- Realize long-distance power transmission (such as 10kV-220kV)
- Ensure grid connection safety and electrical isolation
| 成分 | 関数 |
|---|---|
| PV Panels | Generate DC electricity |
| インバータ | Converts DC → AC |
| 昇圧トランス | Raises voltage for grid |
| 開閉装置 | Controls and protects system |
| 系統接続 | Power distribution |
The main types of photovoltaic transformers
1.油入変圧器
- Suitable for large ground power stations
- 優れた放熱性能
- strong carrying capacity
2.乾式変圧器
- Commonly used in industrial and commercial rooftop photovoltaics
- 高い安全性 (oil-free)
- 低いメンテナンスコスト
3.Box type transformer (pre installed)
- integrated design
- 簡単な取り付け
Comparison Table
| タイプ | 効率 | メンテナンス | 応用 |
|---|---|---|---|
| 油入 | ★★★★★ | 中くらい | Large solar farms |
| 乾式タイプ | ★★★★ | 低い | Buildings |
| Pad-Mounted | ★★★★ | 低い | Distributed PV |
Analysis of Key Technical Parameters
When choosing a photovoltaic transformer, it is important to pay attention to:
| パラメータ | 説明 |
|---|---|
| 定格電力 (kVA/付加価値税) | Capacity of transformer |
| 電圧比 | Input vs output voltage |
| ベクトルグループ | Phase displacement (例えば, ダイナ11) |
| 冷却方法 | オナン, オンオフ, 等. |
| インピーダンス | Impacts fault current |
2026 Technology Trends: Intelligent Transformers
1.AI predictive maintenance
- Real time monitoring of temperature, オイルの品質, and load
- Early warning of faults to reduce downtime risks
2.Integration of smart grid
- Realize dynamic load adjustment
- Automatic voltage optimization
3.Digital twin technology
- Building a virtual model
- Optimize operation and maintenance strategies
Design Challenges in Photovoltaic Applications
1.Strong output volatility
- Load instability caused by changes in lighting conditions
- High adaptability design is required
2.High temperature environment
- Regions such as the Middle East and Africa have extremely high temperatures
- Strict requirements for cooling system
3.Harmonic problems
- Inverter generates harmonics
- Affects the lifespan of transformers
Case analysis: 100MW photovoltaic power station
| パラメータ | 価値 |
|---|---|
| 容量 | 100 MW |
| トランスの種類 | Oil-immersed |
| 電圧 | 0.8kV → 132kV |
| 冷却 | オナン/オナフ |
| 効率 | >99% |
How to choose a suitable photovoltaic transformer?
Suggest evaluating from the following dimensions:
- Project scale (kW/MW)
- 設置環境
- Grid connection requirements
- 冷却方法
- Full lifecycle cost
洛陽大唐エネルギー技術有限公司. Rを統合したハイテク企業です&D, 変圧器などの電力機器の製造・供給, 新しいエネルギー成分, 配電盤とインバータ. 技術革新を核に, 私たちは、世界中の顧客にサービスを提供するために、高信頼性と高性能の電源ソリューションの開発に注力しています。. 厳格な品質管理システムと国際規格認証を取得しています。, これからも優れた製品を世に送り出し、お客様の安全・安定した電力システムの構築をお手伝いします.
