The strongest "net red" for PV sound Dong Mingzhu will enter the photovoltaic industry?

In recent days, people from all walks of life are paying attention to the two sessions, and representatives of the National People's Congress have also made suggestions for the development of the motherland. In the field of photovoltaics, most of the proposals concerning photovoltaics are concentrated in the focus of "photovoltaic taxes and fees" and "subsidy arrears", and all these problems are raised in the photovoltaic industry. One of the exceptions is that as the most popular "net red" in the home appliance industry and the most powerful entrepreneur in the online red world, Dong Mingzhu also voices for the photovoltaic industry. What did she say?

Dong Mingzhu speaks for the photovoltaic industry

In recent years, Dong Mingzhu has become a "net red" with extremely distinctive personality. Gree Electric has been flourishing under her leadership, and the household appliance industry has always been implicated in the photovoltaic industry. However, Dong Mingzhu has targeted this year's "two sessions". Suggestions for the photovoltaic industry, why? What suggestions did she make?

According to reports, Dong Mingzhu believes that the current national policies and standards for photovoltaic power generation are concentrated on the photovoltaic network and the online network, while ignoring the spontaneous use of photovoltaic DC power.

Photovoltaic DC power generation is self-sufficient for its direct use of photovoltaic direct current, with high energy utilization rate (up 6-8%), obvious energy saving advantages, less equipment investment, and short investment recovery period (saving inverter, transformer and other equipment) The advantages of saving equipment initial investment of about 10% have gradually become a new choice for photovoltaic power generation applications. However, the state's support policies and measurement standards for the spontaneous use of photovoltaic DC power generation are still blank, which directly leads to the difficulty of promoting this technology in China.

Therefore, Dong Mingzhu suggested: 1. Support the application and promotion of photovoltaic direct drive equipment, and formulate DC subsidy policies and measurement standards;

2. Create a fair and equitable market environment, give priority to supporting the application of domestic equipment and original technology, and financial investment projects should give priority to purchasing and using photovoltaic direct drive technology and products to support the application and development of new energy technologies.

Above we can find that the proposal proposed by Dong Mingzhu is mainly for the spontaneous use of photovoltaic DC power generation. As we all know, the initial power generated by photovoltaic power generation belongs to direct current. The current form of photovoltaic power generation is mainly based on power stations. The direct current generated by the photovoltaic power station is generally converted into alternating current by the inverter and incorporated into the national grid, and then utilized by the national grid. In the process of photovoltaic power generation from power generation to application, the power may be converted multiple times, and there is more or less energy loss.

If our photovoltaic power generation can pass the process of DC-to-AC, it will not only improve the utilization efficiency of photovoltaic power generation, but also reduce the cost of photovoltaic power generation. However, PV DC power generation has its own implementation difficulty.

In most cases in our daily life, DC is used. Why is our household PV power plant not directly connected to the load, but still need an inverter? This is mainly determined by the characteristics of photovoltaic power generation. First, the output voltage and current of the photovoltaic power station will change due to the intensity of sunlight, and the power generation of the photovoltaic power station is very small in cloudy, rainy, and evening time. This means that the electricity generated by the photovoltaic power station is very unstable. The disadvantage of such poor stability makes photovoltaic power generation difficult to directly use, and only through the existence of the inverter to solve.

That is to say, if the problem of stability cannot be solved, then the application mode of photovoltaic DC power generation for self-use will be difficult to promote in the application market.

The self-use mode of photovoltaic DC power generation proposed by Dong Mingzhu may mainly refer to a special application scenario. Yes, it is air conditioning.

For photovoltaic air conditioners

Dong Mingzhu has always been proud of her products, such as Gree air conditioners, such as Gree mobile phones, and Gree photovoltaic air conditioners.

Photovoltaic air conditioner is a unique product launched by Gree. In 2018, Dong Mingzhu once said that Gree has developed photovoltaic energy air conditioners, no need to consume energy, and even the Saudi prince also uses Gree air conditioners.

And time came to 2019, Gree photovoltaic air-conditioning to make persistent efforts to win the world's largest photovoltaic air-conditioning project. It is reported that the total cooling capacity of the project exceeds 4,200 tons of cold. It is currently the largest photovoltaic air-conditioning project in the United States and the world. It has more than 1,200 air-conditioning equipment and more than 6.7 megawatts of installed photovoltaic panels.

Surprisingly, according to reports, Gree PV air conditioners use photovoltaic direct drive technology. The air conditioning system directly uses the direct current generated by photovoltaics, which is the first in the industry. According to reports, compared to the traditional photovoltaic panel plus inverter use, PV direct drive technology saves at least 10% energy conversion loss.

In this way, we can understand why Dong Mingzhu will make recommendations on the application mode of photovoltaic DC power generation for self-use, and everything is “for photovoltaic air conditioners”. It is understood that Gree has already built 5,000 PV systems for 22 countries and regions around the world. At the same time, based on the PV air conditioning system, G-IEMS local energy Internet system has been developed.

Although popular in foreign countries, Gree PV air conditioners have not shown the competitiveness they deserve in China. If the national policy subsidizes the spontaneous use mode of photovoltaic DC power generation, then Gree's photovoltaic air conditioner is expected to be widely promoted in China, and then rewrite the future air-conditioning market structure.

This is why Dong Mingzhu called on national policies to support the application of photovoltaic direct drive equipment.

summary

Although Dong Mingzhu’s purpose for photovoltaics is mainly to promote their own PV air conditioners, it does not mean that the issue raised by her does not make sense. If photovoltaic power generation can be directly utilized without the inverter in a variety of application modes, then this application mode has the value of promotion. In addition to photovoltaic air conditioners, there are still many applications that can directly use photovoltaic power generation, and the development and promotion of these models require the support of Dong Mingzhu. It is believed that with the rapid development of photovoltaic power generation, this new form of energy will become more and more well known, and its potential will be discovered and eventually applied to all aspects of human life.

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