The mainland's photovoltaic industry started nearly half a century later than the earliest developed countries, but now it can become an international leader. The reason why we can become a rising star is actually inseparable from the huge technological breakthrough made by Continental in photovoltaic inverter equipment.
So, why is the photovoltaic industry inseparable from inverters? What is the purpose of this device?
Don't look at quantity, look at quality
Small but big help? It turns out that photovoltaic inverters play an indispensable role in the operation of solar power generation equipment.
In daily life, in fact, there is a large number of demand to turn alternating current into direct current, because the state of direct current should be more stable, not easy to overload, and when the voltage is abnormal, it can also be automatically stopped for protection, safe and reliable.
And this process of changing AC to DC is called rectification. However, if the process is reversed and the direct current is turned into alternating current, this process is called inverter, and the photovoltaic inverter plays this role in the photovoltaic power generation process.
In fact, the function of the photovoltaic inverter is not only so simple, in addition to completing the daily work of DC to AC, it also bears the responsibility of protecting the photovoltaic power generation equipment from overload and controlling the photovoltaic to obtain the maximum operating power.
You must know that photovoltaic power generation is actually a new technology that uses professional equipment to convert light energy into electrical energy, and the whole process requires controllers, inverters and many solar cell plates, all three of which are indispensable.
Since the efficiency of the light emitted by the sun varies from day to day, the output power of solar panels is also constantly changing, and when its power reaches its maximum, the PV inverter will start to operate, taking on the role of supervision, preventing it from being too triumphant and overloading.
In addition, the efficiency of the solar panels in the process of photovoltaic power generation is also related to the temperature of its own chips, and the photovoltaic inverter can continuously follow up and check the operation efficiency of the entire system while protecting it from being overloaded.
When a certain amount of data is accumulated, the inverter can keep the panels at maximum output efficiency for a longer period of time.
To put it simply, the existence of the inverter is like the guardian of the photovoltaic power generation equipment, not only to take care of it from harm, but also to constantly ensure that it is running in the most perfect state at all times.
From the appearance, the photovoltaic inverter is actually very much like a large U disk, according to the type, it can be divided into independent inverter, grid-connected inverter, backup battery inverter, but no matter which one, in fact, it will not be able to operate perfectly because of its own material problems.
However, with the continuous increase in the development of inverter equipment around the world, the most advanced inverter can reach about 98% work efficiency, which is almost infinitely close to 100%.
The development of domestic inverters is slow but steady
The development of new technologies has a long history, but the pace of catching up is extremely difficult. When the latest generation of photovoltaic inverters are displayed in the mainland, many people ignore the many difficulties behind it.
Catching up with the tail of the first industrial revolution, France's Bacreel accidentally experienced the photogenerated volt effect in 1839, that is, the amount of current in light is greater than that in low light.
Then, in less than 40 years, British scientist William and his team extended this effect, that is, solid metal products can complete the work of converting light energy to electrical energy. Although it is very difficult to go from zero to one, it only takes time to go from one to hundred.
Since 1953, the United States, Australia, Mexico, Switzerland and other countries have successively launched the development of solar energy. By the end of the twentieth century, Germany, Japan, the United States and other countries also started the roof plan, so that photovoltaic power generation is no longer a high-tech industry, but let it enter the homes of ordinary people.
Since the conversion technology of photovoltaic energy and the development technology of inverters were the first to be industrialized by the United States, it is conceivable that the mainland did not have any possibility of "contamination" at the same time. So, in this case, we think of self-reliance.
First of all, we started to develop domestic inverters at the end of 2003, and we did two things at this stage, the first thing was to conduct a lot of experiments on domestic inverters, and improve the capabilities of domestic equipment by increasing the difficulty of interference.
With the smooth progress of the interference experiment, the domestic inverter is no longer something that people talk about and abandon, so that the attitude of domestic manufacturers towards domestic products has gradually changed, so it has become the second thing and established a reputation.
Ten years later, because the development soil of our domestic inverter is very fertile, many manufacturers have left the field, and this stage has become the golden age of domestic inverter production and research and development, not only the number is increasing, but the division of technical fields is also more refined and perfect.
By 2015, the development of domestic inverters has also changed from small saplings to dense trees, and through the intelligent optimization of inverter technology, the equipment has not only been reduced from nearly 20 square meters of land area, but also upgraded the voltage level to 1500V level.
Up to now, the development of domestic inverters has been inseparable from foreign products, but in order to seek another breakthrough, we are still tirelessly exploring ways to improve the conversion efficiency.
You know, in 2003, the efficiency conversion rate of the most advanced inverter has reached 98%, but now, the mainland's inverter is still hovering at 99%, and the last point left is an insurmountable gap between the mainland and foreign countries.
Domestic inverters are the international mainstream
The development of the inverter industry is not what it used to be, and the photovoltaic inverter equipment named after China has also become the unanimous choice of many domestic and foreign manufacturers.
At present, there are many manufacturers specializing in R&D of inverters in mainland China, such as Huawei, TBEA, GoodWe and dozens of others.
In recent years, Huawei has been looking for ways to link photovoltaic power generation systems with artificial intelligence technology and 5G.
With investment and R&D regardless of cost, Huawei's inverters have won the top spot in shipments for seven or eight consecutive years since 2015.
Today, it has carried out international cooperation with IKEA, Wal-Mart and other manufacturers, and has become a photovoltaic technology partner in many countries and regions.
Huawei's going out also shows that the mainland's inverter development has successfully passed that stage of deep doubt.
It is understood that in 2023 alone, the installed capacity of residential inverter equipment in mainland China will increase by 43.5GW, and the total amount will come to around 115.8GW. At the same time, domestic photovoltaic inverters have also become a hot commodity in overseas markets.
Since the beginning of 2021, in just three years, the international market share of domestic inverters has been close to 4%.
At the same time, in fact, the mainland exported 170GW of installed inverter capacity in 2023, which accounted for almost one-third of the global market that year.
China's photovoltaic industry can be well received in the international community because of our serious attitude towards technology research and development.
If we can achieve further breakthroughs in the operation efficiency of photovoltaic inverters in the future, it is expected that the international shipments of domestic photovoltaic inverters will reach a higher level.
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