According to the energy sector statistics, the overall market size of the global PV inverter new and replacement in 2020 will reach about 136GW, and will remain in the next few years at an average growth rate of more than 20%. To 2025 the global PV inverter new and replacement of the overall market is expected to reach 400GW market.
As a key component of PV power generation system, the role of PV inverter is to convert the variable DC voltage generated by PV modules into utility frequency AC power, which directly affects the safe and reliable operation of the power grid. At present, the common inverters on the market are mainly centralized inverters, string inverters and micro inverters.
Figure 1: Comparison of various PV inverter structures
Micro-inverters are mainly used in grid-connected PV systems of less than 300W. Usually the number of micro-inverters is the same as the number of PV modules, and the AC/DC conversion and maximum power tracking functions of each module are carried out separately. When a panel is damaged or blocked, it does not affect the normal operation of other inverters.
In addition, micro inverters are designed to last up to 25 years, much longer than standard inverters, which makes them more profitable than conventional PV systems as well.
Under the background of double carbon, distributed PV has become an important grasp to expand the scale of PV power generation application in China. As one of the main technical solutions for distributed power generation systems, micro inverter is gradually becoming the preferred choice in distributed PV application scenarios by virtue of its safety, high efficiency, intelligence, reliability and convenience. It is expected by 2025 that the global micro-inverter market will grow to about 30 billion yuan, with a vast market space.
Global Micro Inverter Market Scale and Growth Rate
Figure 2: Source: Hua Jing Industry Research Institute（华经产业研究院）
MOSFET as the core components of the inverter, has also been able to further open up the market space with the continuous development of PV.
For PV market applications, WAYON's product portfolio includes a full range of power devices, specifically high voltage SJ-MOSFETs, medium voltage SGT MOSFETs and IGBT modules and third generation silicon carbide Schottky diodes SiC SBDs. In addition, WAYON can also provide AC/DC, DC/DC, LDO, protection devices and other products to achieve a complete system level solution.
Different inverters with different structures have different circuit frameworks, and figure 3 shows the micro-inverter topology architecture. The power device, as the key device of the whole circuit system, accounts for a relatively high amount.
Figure 3: Micro-Inverter Topology Architecture
With the rapid growth of global PV demand, WAYON accelerates the layout of PV industry business. In addition to micro-inverters, WAYON has products and solutions to support string inverters and energy storage converters and related BMS, which are niche areas with high future boom. To facilitate quick selection, the following table shows the common material specifications of WAYON in the inverter and energy storage applications.
Jump to the "Product Center" page for more information on WAYON MOSFET products: https://www.way-on.cn/Product-Center/293.html
