In recent years, driven by a series of favorable policies, China's PV industry has achieved a large-scale opening and directly stimulated the expansion of the inverter market.Many domestic inverter manufacturers have sprung up, and a large number of domestic excellent photovoltaic inverters The rapid rise of the inverter brand has gradually become a leader in the PV inverter industry. The domestic PV inverter has more advantages in the cost control day. The way of the subsidy allows the user to pay more attention to the power generation, After the sale put forward higher requirements.
Since 2016, the development of domestically-made inverters has been booming. The overseas inverters have been hard to find in the Chinese market. The share of domestically produced inverters in Southeast Asia, Australia, Africa and even Europe has been rising year by year. In many countries and regions, the share of inverters has surpassed that of the United States Europe and Japan brands.China-made inverters from the production point of speaking, is already the world's first.Many people are very optimistic that our country is already a strong inverter.
PV inverters are highly dependent on the development of power electronics and microelectronics, especially semiconductor switching devices and microprocessors. At present, some inverter components have indeed got rid of import dependency, but the core components (main control chip, IGBT Modules, etc.) are basically foreign products, many of the research and development of functional components are far behind the countries in Europe, Japan and the United States.Although many domestic new products and new technologies have emerged in recent years, but in the production and R & D of core components, And the gap between the international advanced level is still great.
1, the soul of the inverter - power electronic software technology
Power electronics software technology basically relies on foreign countries, such as the main circuit topology, soft-switching technology, multi-level structure and PWM digital control, almost no original in our country.
2, inverter brain - processor
Processors such as DSP, ARM, CPLD, etc., in addition to a Huawei HiSilicon chip, other are dependent on imports, the control chip on the inverter is basically the United States TI, NS, ST of Europe these few.
3, the heart of the inverter - power devices
Power devices such as MOSFET and IGBT, 100% rely on imports, from the market competition pattern, the United States power devices in a leading position in the world, with a number of globally influential manufacturers such as Fairchild, Linear, IR, ON Semiconductor, AOS and Vishay, etc. Manufacturers. Europe has three major global semiconductor manufacturers Infineon, ST and NXP, complete product line, both power IC or power separation devices have the leading strength.Japan power device manufacturers are Fuji Fuji, Mitsubishi Mitsubishi, Simon Kang semikron, Toshiba TOSHIBA However, the power semiconductor market in mainland China accounts for more than 50% of the world market. However, in the mainstream high-end MOSFET and IGBT market, 90% mainly rely on imports and are basically monopolized by foreign enterprises in Europe, the United States and Japan.
4, other products
High-end current sensors, cooling fans, light lotus root, driver chips, most of them are imported.
At present, the basic domestic component manufacturers, but also continue to work hard to catch up with the international advanced level.
