مورد المكونات الإلكترونية | محولات, المحاثات, العاكسون
Neglected photovoltaic core equipment
With the continuous explosive growth of global photovoltaic installed capacity in 2026, غالبًا ما ينصب تركيز الصناعة على الوحدات والعاكسات, 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
| عنصر | وظيفة |
|---|---|
| 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.محول مغمور بالزيت
- Suitable for large ground power stations
- أداء ممتاز لتبديد الحرارة
- strong carrying capacity
2.Dry type transformer
- Commonly used in industrial and commercial rooftop photovoltaics
- High safety (oil-free)
- Low maintenance cost
3.Box type transformer (pre installed)
- integrated design
- تركيب سهل
Comparison Table
| يكتب | Efficiency | Maintenance | طلب |
|---|---|---|---|
| مغمورة بالزيت | ★★★★★ | واسطة | Large solar farms |
| Dry-Type | ★★★★ | Low | Buildings |
| Pad-Mounted | ★★★★ | Low | Distributed PV |
Analysis of Key Technical Parameters
When choosing a photovoltaic transformer, it is important to pay attention to:
| Parameter | وصف |
|---|---|
| القوة المقدرة (kVA/MVA) | Capacity of transformer |
| Voltage Ratio | Input vs output voltage |
| مجموعة المتجهات | Phase displacement (على سبيل المثال, داين11) |
| Cooling Method | أونان, تشغيل إيقاف, إلخ. |
| Impedance | Impacts fault current |
2026 Technology Trends: Intelligent Transformers
1.AI predictive maintenance
- Real time monitoring of temperature, oil quality, 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 | Value |
|---|---|
| سعة | 100 MW |
| Transformer Type | Oil-immersed |
| الجهد االكهربى | 0.8kV → 132kV |
| Cooling | ONAN/ONAF |
| Efficiency | >99% |
How to choose a suitable photovoltaic transformer?
Suggest evaluating from the following dimensions:
- Project scale (kW/MW)
- Installation environment
- Grid connection requirements
- cooling method
- Full lifecycle cost
Luoyang Datang Energy Technology Co., Ltd. هي مؤسسة التكنولوجيا الفائقة دمج R&د, تصنيع وتوريد معدات الطاقة مثل المحولات, مكونات الطاقة الجديدة, خزائن التوزيع والعاكسات. With technological innovation as the core, we focus on creating high-reliability and high-performance power solutions to serve global customers. With a strict quality control system and international standard certification, we continue to output excellent products and enable customers to build safe and stable power systems.







