01 Photovoltaic Inverter Market Prospect
As the main intelligent equipment in photovoltaic system, photovoltaic inverter has the functions of maximum power point tracking ( MPPT ) and islanding protection, which directly affects the power generation efficiency, operation stability and service life. As an indispensable key device in the whole system, it is inseparable from the overall development of photovoltaic business.
In recent years, with the decline of national photovoltaic subsidies, the macro policy has shifted to the implementation of new energy power generation from the source of power generation, and household photovoltaics have begun to receive preferential support from subsidy policies. At the same time, according to the target requirements of China 's carbon peak and carbon neutralization, the domestic new energy installation volume needs to reach 75 % by 2050 ; in the global market, since 2019, China 's inverter output has continued to grow to more than 80 % of the world. Overall, the future development space of domestic photovoltaic inverters is broad, and the market capacity will continue to grow.
Chart of Global PV inverter market size projection
02 Future Technical Route of Photovoltaic Inverter
Photovoltaic inverters have a variety of classification methods. Here, they are classified by production-side technology and applicable places. They can be divided into centralized inverters, string inverters, and micro inverters. Combined with multi-party data evaluation, the current photovoltaic inverter market centralized accounted for about 35 %, string type accounted for more than 60 %, the other is the micro inverter.
With the increase of IGBT power density, the cost of string inverter is reduced. At present, the cost performance of high-power string inverter can compete with centralized inverter. In 2021, the proportion of string inverter in the bidding of central state-owned enterprises is as high as 88 %. In the future, high-power string inverter will continue to replace centralized inverter in the world. By 2024 the string type will reach a ratio of 70-80 %, while the centralized type will tend to be stable at a ratio of 20-30 % and around 5 % are micro inverters.
After 2025, with the decline of micro-inverter technology and cost threshold, both centralized and string inverters will decline, while the proportion of micro-inverters will rise. At the same time, there is a trend of combining micro-inverters and string inverters ( single-phase string inverters ). It is estimated that the micro inverter will account for about 30 %, string inverter decline stabilized accounted for 50 %. The remaining shares are single-phase string inverters, and DC optimized hybrid inverters.
03 Ainuo Instruments Helps the Development of Photovoltaic Industry
With the rapid development of the photovoltaic industry, the state has put forward more comprehensive and strict requirements for the product quality and testing standards of photovoltaic inverters. For example : PV inverter must meet the ' GB / T 37409-2019 grid-connected PV inverter detection technical specifications ' technical indicators.
The Ainuo AN87600(F) Multiple Channel Power Analyzer are designed for photovoltaics, household appliances, motors, and more. They are perfect for the performance testing of all types of PV inverters on the market.
Product features
l Six-channel simultaneous power analysis
l Basic accuracy: ±0.1%
l Measurement bandwidth: DC, 0.5Hz~100kHz
l Acquisition rate: 200kSps
l Maximum voltage: standard 1000V, optional 1500V
l Maximum current: 50A/20A (standard)/10A/5A/2A/1A, support combination, optional sensor
l LCD display: Full touch screen, custom display items, wave display
l Data storage: Custom storage items, export in CSV format
l Perfect size: Standard 3U height, suitable for integration
Product application
l Standby power consumption and power analysis of single-phase/three-phase household appliances and commercial appliances
l PV inverter power, efficiency, harmonic analysis.
l Electric vehicles, charging pile electrical performance test.
l Power electronics, transformers, generator power/harmonic analysis.
l Inverter, inverter motor power/harmonic analysis.
l Switching power supply power/harmonic/inrush current analysis.
l Lighting/LED power analysis
