In 2020, the grid-connected capacity of wind power in my country will exceed 70GW, and the increase in the sales of wind power hosts will bring about the performance growth of the entire industry chain. In the 2020 annual report released by the veteran wind power company Sungrow, the wind power converter business as one of the core components has been greatly improved.

On April 27, Sungrow’s latest annual report showed that in 2020, Sungrow’s wind power converter shipment volume was 16GW, a year-on-year increase of 351%, and sales were 1.41 billion yuan, a year-on-year increase of 381.6%. It is at the top of the industry.

In the field of wind power converters, Sungrow can be called a "veteran". In 2004, Sungrow started to engage in the research and development of wind power converters. In 2006, it was the first domestic manufacturer to successfully independently develop high-power wind power converters. It participated in the undertaking of two major projects in the "Eleventh Five-Year" National Science and Technology Support Plan. The first manufacturer to obtain CE certification for wind power converters and presided over the drafting of 2 national standards for wind power converters, and became the drafting unit of national converter standards. In 2012, it became a nationally recognized enterprise technology center and undertook the "Twelfth Five-Year" national science and technology support plan Major project-7MW offshore wind power project. In 2013, the 2MW full-power wind power converter was awarded the national key new product. In 2018, it was the first to launch the 950V/1140V three-level wind power converter. Up to now, Sungrow Power Converter and the top ten domestic complete machine manufacturers have achieved batch shipment and application of onshore and offshore wind power converters, and as a representative of domestic converters, the products have been shipped to Application in overseas wind farms.

It can be said that from the early market mainly occupied by foreign brands, to the full localization of today, Sungrow Power and other old-brand converter manufacturers have played a vital role.

Different from other industries, wind power converters are one of the core components of wind power. Due to the high technical barriers and strict requirements for quality innovation, this industry has rarely seen new players in the domestic development in the past two decades. .

These barriers lie in the complexity and particularity of wind power operation itself. For wind power converters, one of the important manufacturing difficulties is to design the control system according to the characteristics of wind power operation. This requires manufacturers to understand the characteristics of wind power operation. Have a deeper understanding of the environment. At the same time, due to the 20-life standard of wind turbines, higher requirements are imposed on the reliability of wind power converters, and the adaptability and continuity of the system grid.

So when we look back, Sungrow's persistence has become particularly valuable. Relying on the strong genes developed by the group in the field of power electronic conversion, strict quality management system, efficient delivery platform, and perfect customer service system, following the IPD product development process, Sungrow’s wind power converters are in design selection, device certification, and system All links such as type testing, batch production verification and client product management are fully controlled to enhance the competitiveness of products in an all-round way to meet the application design requirements in various complex environments.

At the same time, for the key components in the converter, Sungrow will carry out extreme simulation tests and uninterrupted batch sampling verification for device reliability to ensure the reliability of batch products and provide converter products with reliable and stable quality. From the past to the present, Sungrow's wind power converter shipments have steadily ranked first in the industry. Behind the achievements are continuous technological breakthroughs and innovations. As one of the earliest pioneers in the wind power converter industry, Sungrow's wind power converters have been used in the national key research and development program "Grid-friendly control technology for large-capacity wind turbines", successfully achieving long-term grid-connected and stable operation.

In 2020, Sungrow’s 5MW air-cooled converter successfully passed the type test, which will target the parity, large-megawatt market and enter the stage of full-scale production.

The strong R&D team of Sungrow is also the cornerstone to support future corporate development. It is understood that Sungrow’s R&D team accounts for 40% of the total number of employees. In 2020, the R&D investment of 806 million has become a strong guarantee for corporate strategic planning. In the future, my country’s newly installed wind power capacity will reach 50 million kilowatts per year. This will undoubtedly be a huge market opportunity. With the large-scale application of high-power converters in onshore and offshore wind power, Sungrow will show more in this field. As an outstanding advantage.

Almost at the same time, Sungrow’s wind energy business unit is also relying on its deep accumulation and application advantages in the field of wind power conversion, intending to turn its operation and maintenance business into another "wind power business card".

A few days ago, the National Energy Administration issued the "Notice on Matters Concerning the Development and Construction of Wind Power and Photovoltaic Power Generation in 2021 (Draft for Solicitation of Comments)", which mentioned for the first time the technical renovation and upgrading of old wind power projects. In the course of the development of wind power in my country, there are many units located in high-quality wind resource areas with equipment operating for more than 10 years. At present, these equipments are facing a series of pain points that affect the availability of units and the production efficiency of wind farms, such as equipment aging and high operating failures.

From this perspective, no matter how prosperous the industry is, aftermarket services must be the "foundation" that supports the healthy and sustainable development of the industry. Under the current market demand for cost reduction and efficiency enhancement, the reduction of wind power costs is a process of continuous optimization based on technological upgrading and industrial maturity. The wind power companies involved should also start from their advantages, focus on the vertical business system, and promote the entire life cycle of a certain field from the links of the industrial chain to reduce costs and increase efficiency.

Wind power converters play an important role in generating power with a wide range of wind speeds, promoting smooth and efficient control of the unit transmission chain, and improving unit conversion efficiency. The high technical difficulty and maintenance difficulty directly raise the threshold for the operation and maintenance of the equipment.

But this is where Sungrow’s advantage lies. It is understood that Sungrow is currently focusing on wind power converters and their surrounding technology upgrades and efficiency enhancements, focusing on the increasingly complex power grid environment and application environment to provide the industry with more professional, Operation and maintenance products and services throughout the life cycle.

According to the North Star Wind Power Network, with the proposal of the central government to build a "new power system" and the important positioning of energy storage in the future power system, Sungrow has been actively deploying wind power storage business. In the process of constructing a new power system, energy storage is considered to be an important means to solve the fluctuation of renewable energy power generation and improve the level of renewable energy power generation and consumption. Building a power generation model with "new energy + energy storage" as the main body will become the future An important way to support the security of the power grid and the absorption of wind and wind.

The above is also an important reason for Sungrow's wind energy division to increase wind storage. At present, Sungrow’s wind power storage business covers wind farms’ centralized energy storage and distributed wind turbines’ stand-alone energy storage, which realizes the controllability and adjustment of the wind power source and greatly improves the friendly performance level of wind power access to the grid.

With the increasingly fierce market competition, Sungrow Power Wind Energy is relying on its own advantages to deeply integrate and vertically expand the three fields of converter equipment, operation and maintenance technical transformation, and wind power storage. This company, which has been quietly developing for more than ten years in the field of wind power segmentation, is focusing on the development of wind power with three major businesses as the carrier.

Judging from the 17 years of persisting in the wind power industry, this down-to-earth Sungrow is called a "craftsman" and deserves its name. In the past 17 years, Sungrow’s wind energy business has been following the development of my country’s wind power industry, gradually rising and entering the high-end market. From the improvement of the power level of wind turbines, the innovation of offshore high-power wind power conversion technology, the innovation of efficiency improvement, and the innovation of wind power conversion, it has always been powered by technological innovation, leading the development and innovation of products and technologies.

In the process of building a clean, low-carbon, safe and efficient energy system in my country, technological innovation and development have always been in an unshakable supporting position. Focusing on the dual-carbon goal, the future development of new energy will profoundly affect and change the operation mode and characteristics of the power system from quantitative to qualitative. We will wait and see that those companies that continue to innovate will drive renewable energy into the next new era of building a new power system. Editor/Baohongying