Six leading photovoltaic companies issued an initiative on the application of photovoltaic module standards, which accelerated the standardization of photovoltaic modules and would bring significant benefits to the entire industry chain
Magnetic Components and Power Supply" learned that a few days ago, Canadian Solar Power Group, Risen Energy, TCL Zhonghuan, Trina Solar, Tongwei Co., Ltd., and Chint New Energy Technology Co., Ltd. issued a joint initiative.
The initiative points out that the standard design and application of 700W+ photovoltaic modules will be promoted: the design of 700W+ photovoltaic modules of each unit will continue the existing standard external dimensions and technical specifications of mounting holes (module dimensions of 2384mm 1303mm, and the distance between the long side mounting holes is 400mm and 1400mm), and the hole position of 790mm will be increasedAt the same time, the upstream and downstream of the industrial chain actively explore more efficient and leading technologies and application solutions to jointly promote the healthy development of the photovoltaic industry.
Photovoltaics put forward personalized requirements for electronic transformers and inductors.
Electronic transformers and inductor companies have been suffering for a long time.
In recent years, with the rapid development of the new energy industry, various shapes of magnetic cores, various types of electronic transformers, and inductors have sprung up. New energy terminal enterprises have put forward more requirements for the shape of inductors and electronic transformers, and the demand for non-standard products has gradually increased.
However, the reporter learned from Yu Zhenfeng, an electronic transformer and inductor engineer at Sungrow, that many inductor and electronic transformer manufacturers do not have a high degree of cooperation with non-standard products. On the one hand, because most of the electronic transformer and inductor manufacturers are standardized molds, presses and other production equipment, for manufacturers, the production of new equipment will obviously lead to an increase in man-hours and product costsOn the other hand, because a non-standard product may only be suitable for one enterprise, the market is small, resulting in high input costs in the early stage, which is easy to cause excessive pressure and risk.
Take the core as an example, if you want to improve the performance of the core, you need to optimize the core process, grind the powder particles finer and more rounded, and make better materials through these more refined processes. "But this actually wastes more electricity and produces less every day, so the product they make is good, but the cost is also high. ”
Yu Zhenfeng also mentioned: "We have requirements for shape, and now the products they produce can indeed meet the needs of our current use, but we can't meet the needs of further cost reduction." Even large magnetic material manufacturers have very little innovation in non-standard shapes. ”
At present, the degree of automation of electronic transformer and inductor enterprises is not high. Yu Zhenfeng said: "The requirements of new technologies in the terminal industry have actually brought about a decline in the automation of electronic transformers and inductors. "For electronic transformer manufacturers, the development of non-standard products needs to slowly bring up other manufacturers to do together, the first few years need a lot of running-in, research and development costs are higher.
As Yu Zhenfeng said, the development of the photovoltaic industry needs more abundant electronic transformers and inductor models to adapt, but for electronic transformers and inductor manufacturers, the cost of developing non-standard products is very high, so the development willingness is not strong, which causes the whole machine and industry enterprises to be in a dilemma.
Component standardization helps achieve scale.
In terms of cost, modules account for the largest proportion of cost and usage in the entire PV system. "The biggest difficulty is the components," says Yu Zhenfeng.
For a long time, photovoltaic modules have come in different sizes, and the models of silicon wafers alone include 156mm and 15675mm、158.75mm, 166mm, 182mm, 210mm, etc.
The main specifications of solar photovoltaic panels are 250W, 255W, 260W, 270W, 275W, 305W, 310W, 315W, and 320W. It should be noted that solar photovoltaic panels generally do not have fixed specifications, and they are mostly customized by manufacturers.
If 60 and 72 PV modules are combined, a module can be matched with 10 different output powers, which not only has many types, but also has a large power span, which will lead to different inverter powers.
Inverters of different power require different types of electronic transformers and inductors to adapt to the needs of photovoltaic modules of different power and size. This is also an important reason why photovoltaic companies put forward personalized requirements for electronic transformers and inductors.
The release of the PV module standard design proposal is expected to comprehensively promote the standardization of PV module products and the industrialization of ultra-high power and ultra-high efficiency modules, so that the upstream and downstream enterprises of the industrial chain can get tremendous development, accelerate the pace of scale of the entire industry, improve production efficiency, reduce the cost of the industrial chain, release the industrial value to a greater extent, reduce the cost of electricity, and promote the maximization of the value of the application side.
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