The "biggest killer" of balcony photovoltaics - EMC testing

The "biggest killer" of balcony photovoltaics - EMC testing

As green energy becomes increasingly popular, balcony photovoltaics, as a new trend of green family life, are quietly entering thousands of households, bringing a touch of freshness and hope to our lives. However, behind this light and hope, a seemingly inconspicuous but crucial technical threshold - electromagnetic compatibility (EMC) testing, is quietly becoming a key yardstick for measuring the quality and safety of photovoltaic systems. In Europe, especially Germany, where photovoltaic technology leads the trend, EMC issues are not only related to the advancement of technology, but also directly affect the green power safety protection of every family. Today, let us explore in depth why when balcony photovoltaics become a normal part of life, EMC has become a threshold that cannot be ignored.

1. The importance of EMC

Invisible Guardian Under the Light of EuropeEMC specifically refers to electromagnetic compatibility. In short, it refers to the ability of electronic equipment to work normally in an electromagnetic environment without causing unacceptable electromagnetic interference to other devices in the environment. In the balcony photovoltaic system, the micro inverter is the core component, and its EMC performance is directly related to the stability, safety and harmonious coexistence of the entire system with other household appliances. Imagine if the photovoltaic system frequently interferes with the TV signal and wireless network at home due to EMC problems, and even causes safety hazards, then what is the original intention of this green energy? When it comes to EMC standards, Europe, especially Germany, is undoubtedly a leader in the world. Germany is famous for its rigorous technical standards and strict testing processes, and has extremely high requirements for the EMC performance of photovoltaic products. This is not only because of Germany's leading position in the field of renewable energy, but also because of its high attention to the quality of life of residents. In Germany, any photovoltaic product entering the market must pass strict EMC testing to ensure that it can still operate stably in a complex and changeable electromagnetic environment, without interfering with other equipment or being affected by external interference.

Case Study 1 In recent years, photovoltaic system failures caused by EMC problems are common. For example, a technical report published by the Indian Ministry of Renewable Energy (MNRE) on its official website, titled "Impact of EMC Issues in Photovoltaic Inverters on Grid Stability", mentioned that in a large photovoltaic power station project in India, some inverters did not meet EMC performance standards, resulting in harmonic pollution and voltage fluctuations in the power grid. These problems not only affected the power quality of the power grid, but also increased the burden on the power grid protection equipment and even caused instability in the local power grid.

Case Study 2 Solar2030E.v. Consulting website reported on April 6, 2024 that the German Federal Network Agency BNetzA announced that a company's 800W inverter product did not meet the EMC standard and was banned from distribution. The article explained that inverters may cause electromagnetic interference to electronic equipment and radio communications. This interference may cause unstable Internet connections or noise from neighboring radios. According to BNetzA, even the radio networks of police and rescue departments may be affected.

All these cases warn us that EMC issues should not be underestimated, as they are related to the vital interests of every user. Therefore, both manufacturers and consumers are paying more and more attention to the EMC performance of products. As the leader of photovoltaic technology in Europe and even the world, Germany's popular trends have a far-reaching impact on the global market. With the widespread popularity of balcony photovoltaics in German households, EMC issues have gradually become the focus of attention within and outside the industry. The high standards of the German market for EMC have not only promoted the continuous advancement of photovoltaic product technology, but also led the global photovoltaic industry to pay attention to EMC issues.

2. TSUN's EMC test

Pioneer and guardian in the EMC field

VED Laboratory

Among many photovoltaic brands, TSUN was the first in China to bring micro inverters to the Offenbach? VDE laboratory in Germany for EMC testing, which lasted for 9 months. On October 5, 2023, it successfully passed the rigorous new EMC (electromagnetic compatibility) test according to the EN 62920:2017 standard, setting an extraordinary industry milestone. The VDE Institute's testing and certification work is widely recognized internationally. Its testing laboratory is accredited by DIN EN ISO/IEC 17025 and is a recognized testing laboratory (CBTL) in the IECEE International Certification System (CB System). The VDE Institute performs EMC and radio testing in accordance with international directives, standards and laws, which strengthens TSUN's spirit of striving to strictly comply with and exceed industry safety standards.

EMC testing consists of three key assessments:

Evaluate the overall electromagnetic interference of the product.

AC side conducted interference test.

DC side conducted interference test.

The introduction of DC-side conducted interference testing in the 62920 standard sets a higher benchmark for product performance and reliability. With this successful test, TSUN has become the first brand in the world to meet this new standard, positioning itself at the forefront of EMC compliance. By 2024, the 62920 standard has been fully adopted across the industry, making TSUN's achievements even more prominent.

Test site

This achievement not only demonstrates TSUN's confidence in product quality, but also reflects its respect and compliance with international market rules. TSUN's G3 series products have passed the market test of large quantities of goods. Numerous user feedback has proved that TSUN's micro inverters have excellent EMC performance. Whether in complex electromagnetic environments or under extreme climatic conditions, they can maintain a stable operating state without interfering with other equipment or being affected by external interference. This series of successful cases has not only won TSUN a good market reputation, but also provided valuable experience for the research and development of its subsequent products.

EMC: The touchstone of micro inverter quality

Today, when balcony photovoltaics have entered thousands of households, EMC has become an important yardstick for measuring the quality and safety of photovoltaic systems. As a pioneer and guardian in the field of EMC, TSUN has won wide recognition in the market with its excellent product performance and strict quality control system. In the future, with the continuous deepening of green life and the continuous advancement of photovoltaic technology, we have reason to believe that TSUN will continue to shine in the field of micro-inverters and bring stable, safe and efficient green energy solutions to more families. Let us work together to welcome a greener, safer and better tomorrow!