3-phase inverters - Efficient solution for larger solar systems

3-phase inverters are the preferred choice for larger solar installations, especially in commercial and industrial applications. They offer a more even power distribution and are capable of handling higher energy demands. These inverters enable higher efficiency and guarantee stable performance, even with larger amounts of energy. Ideal for systems with high energy demands, such as large rooftop installations or commercial solar systems, 3-phase inverters offer a reliable and efficient solution.

Leading brands for 3-phase inverters

Huawei offers advanced 3-phase inverters with high efficiency and innovative features. They integrate advanced monitoring solutions that allow easy control of system performance. Fronius is known for its durable and robust 3-phase inverters. They are characterized by high performance and flexibility and are ideal for medium to large solar systems. SolarEdge also manufactures powerful 3-phase inverters that offer excellent efficiency and innovative features to optimize solar system performance. Their user-friendly monitoring platform enables easy fault diagnosis.

3-phase inverters are the ideal choice for larger solar installations and ensure high efficiency for large energy demands.

What are 3-phase inverters?

3-phase inverters are devices that convert the direct current (DC) generated by solar modules into alternating current (AC), ensuring an even power distribution across three phases. These inverters are particularly suitable for larger solar installations that have higher energy requirements, such as commercial or industrial systems. They offer an efficient solution for energy conversion and are ideal for applications with high power requirements. A 3-phase inverter is typically used in systems with an output of over 10 kW.

How do 3-phase inverters work?

3-phase inverters convert the generated direct current into three separate alternating current phases, which are then fed into the power grid or used on site. This technology ensures an even distribution of the load, which increases efficiency and optimizes system performance. The conversion takes place efficiently so that large amounts of energy can be used reliably.

Advantages of 3-phase inverters

3-phase inverters offer numerous advantages and are particularly suitable for larger solar systems and commercial applications. Here is an overview of the most important advantages:

Higher efficiency and performance

3-phase inverters offer better efficiency when converting direct current into alternating current, which is particularly advantageous for larger solar systems with high energy requirements. They distribute the generated electricity evenly across three phases, resulting in a more stable and efficient power supply.

Optimum load distribution

By distributing the load evenly across three phases, a more stable power supply is ensured, especially with higher load requirements, which is crucial for commercial and industrial applications.

Better grid integration

In regions with 3-phase power supply, these inverters offer better integration into the grid and improve grid stability by feeding the generated energy more efficiently into the public grid.

Scalability

3-phase inverters make it easy to expand the solar system. As the energy demand grows, the system can be easily expanded with additional solar modules and power capacities.

Ideal for large systems

They are particularly suitable for larger solar systems in commercial applications or industrial plants, as they can process large amounts of energy efficiently and ensure a continuous energy supply.

Integration with storage solutions

3-phase inverters can be easily combined with energy storage systems to store surplus solar power and use it when needed, increasing the self-consumption rate.

Durability and low maintenance costs

These inverters are more robust and durable, resulting in lower maintenance costs and higher profitability over the lifetime of the solar system.

Disadvantages of 3-phase inverters

Although 3-phase inverters offer many advantages, there are also some disadvantages that should be considered when choosing the right inverter for a solar installation:

Higher purchase and installation costs

3-phase inverters are generally more expensive than 1-phase models. This applies to both the purchase and the installation, as installation requires more expertise and time. This can increase the overall cost of a solar installation, especially for smaller systems where the higher costs are not always justified.

More complex installation

Installing a 3-phase inverter requires a more complex electrical installation as the inverter needs to be matched to three phases. This means that it may not be able to be used directly in every home or on every property if a 3-phase power supply is not available.

Not required for small systems

For smaller solar systems, such as those found in single-family homes or small commercial operations, 3-phase inverters are often oversized. In such cases, 1-phase inverters offer a more cost-effective and simpler solution.

Increased space requirement

3-phase inverters are usually larger than their 1-phase counterparts, which requires more space for installation. This can be problematic in small installation rooms or where space is limited.

Increased maintenance costs

As 3-phase inverters are more complex, maintenance and repair costs can also be higher. Should a defect occur, the repair can be more expensive than with simpler single-phase inverters.

Higher demands on the grid supply

In regions or buildings with a single-phase power supply, the integration of a 3-phase inverter is difficult and may require conversion to a 3-phase grid supply, which can involve additional costs and effort.

Leading suppliers of 3-phase inverters on SolarTraders

Huawei offers 3-phase inverters with high efficiency and advanced technology. They are characterized by their reliability and user-friendly integration.
Fronius is known for its robust and durable 3-phase inverters. They offer high performance and excellent system stability.
SolarEdge convinces with innovative 3-phase inverters that offer optimal performance and user-friendly monitoring.
SMA offers 3-phase inverters that are known for their reliability and advanced technology. They are ideal for larger solar installations and commercial applications.
Goodwe manufactures cost-effective 3-phase inverters with high efficiency and easy installation process. They offer a good solution for medium to large systems.
Sungrow Power offers powerful 3-phase inverters that are known for their high efficiency and flexibility. They offer high performance and are ideal for large-scale solar installations.

Areas of application for 3-phase inverters

3-phase inverters are ideal for larger solar systems and applications where high performance is required. They are particularly suitable for:

Commercial applications: 3-phase inverters are perfect for large office buildings, factories or commercial solar projects.
Industrial solar plants: In large solar parks and industrial plants with high energy requirements, 3-phase inverters offer a stable and efficient solution.
Expandable systems: For projects that are to be expanded in the future, 3-phase inverters offer a flexible solution that can be easily adapted to increasing energy requirements.

Compatibility with different system architectures

Adaptability: 3-phase inverters are versatile and can be combined with different solar system configurations. They are particularly effective in combination with high-performance solar modules, but also in systems that use multiple strings (module groups).
Integration with energy storage systems: For solar systems that are combined with storage systems, 3-phase inverters offer the advantage of better load balancing and energy feeding into the storage systems, which increases the flexibility and efficiency of the entire system.

Learn more about 1-phase inverters

Single-phase inverters are the perfect choice for smaller solar systems in private households or smaller commercial applications. They efficiently convert the generated direct current into alternating current and are characterized by simple installation. These inverters offer a cost-effective solution for moderate energy requirements and are particularly advantageous in regions with a single-phase power supply. With low power consumption, they enable stable and efficient energy conversion.