Elektronesch Komponente Fournisseur | Transformers, Induktoren, Inverters
Neglected photovoltaic core equipment
With the continuous explosive growth of global photovoltaic installed capacity in 2026, De Fokus vun der Industrie ass dacks op Moduler an Inverter, 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
| Komponent | Funktioun |
|---|---|
| PV Panels | Generate DC electricity |
| Inverter | Converts DC → AC |
| Step-Up Transformer | Raises voltage for grid |
| Switchgear | Controls and protects system |
| Grid Connection | Power distribution |
The main types of photovoltaic transformers
1.Ueleg Taucht Transformator
- Suitable for large ground power stations
- Excellent heat dissipation performance
- strong carrying capacity
2.Dréchen Typ transformer
- Commonly used in industrial and commercial rooftop photovoltaics
- High safety (oil-free)
- Niddereg Ënnerhaltskäschte
3.Box type transformer (pre installed)
- integrated design
- Einfach Installatioun
Comparison Table
| Typ | Effizienz | Ënnerhalt | Applikatioun |
|---|---|---|---|
| Ueleg ënnerdaach | ★★★★★ | Mëttelméisseg | Large solar farms |
| Dréchen-Typ | ★★★★ | Niddereg | Buildings |
| Pad-Mounted | ★★★★ | Niddereg | Distributed PV |
Analysis of Key Technical Parameters
When choosing a photovoltaic transformer, it is important to pay attention to:
| Parameter | Beschreiwung |
|---|---|
| Bewäert Kraaft (kVA/MVA) | Capacity of transformer |
| Spannungsverhältnis | Input vs output voltage |
| Vector Group | Phase displacement (z.B., Dyn 11) |
| Cooling Method | ONAN, AN OFF, etc. |
| Impedance | Impacts fault current |
2026 Technology Trends: Intelligent Transformers
1.AI predictive maintenance
- Real time monitoring of temperature, Ueleg Qualitéit, 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
| Parameter | Wäert |
|---|---|
| Kapazitéit | 100 MW |
| Transformer Type | Oil-immersed |
| Spannung | 0.8kV → 132kV |
| Ofkillung | ONAN/ONAF |
| Effizienz | >99% |
How to choose a suitable photovoltaic transformer?
Suggest evaluating from the following dimensions:
- Project scale (kW/MW)
- Installation environment
- Grid connection requirements
- Ofkillungsmethod
- Full lifecycle cost
Luoyang Datang Energy Technology Co., Ltd. ass eng High-Tech Entreprise déi R&D, Fabrikatioun a Versuergung vu Kraaftausrüstung wéi Transformatoren, nei Energiekomponenten, Verdeelung cabinets an inverters. Mat technologescher Innovatioun als Kär, mir konzentréieren op eng schafen héich-Zouverlässegkeet an héich-Performance Muecht Léisungen global Clienten ze déngen. Mat engem strenge Qualitéitskontrollsystem an international Standard Zertifizéierung, mir weider excellent Produiten eraus an erlaben Clienten sécher a stabil Muecht Systemer ze bauen.







