Photovoltaic inverter (PV inverter or solar inverter) can convert the variable DC voltage generated by photovoltaic (PV) solar panels into alternating current (AC) inverter with commercial frequency, which can be fed back to the commercial power transmission system, or supplied to the grid usage of the grid. Photovoltaic inverter is one of the important balance of system (BOS) in photovoltaic array system, which can be used with general AC power supply equipment. Solar inverters have special functions for photovoltaic arrays, such as maximum power point tracking and islanding protection.
Solar inverters can be divided into the following three categories:
- Stand-alone inverters: Used in independent systems, the photovoltaic array charges the battery, and the inverter uses the DC voltage of the battery as the energy source. Many stand-alone inverters also incorporate battery chargers that can charge the battery from AC power. Generally, such inverters do not touch the grid and therefore do not require islanding protection.
- Grid-tie inverters: The output voltage of the inverter can be returned to the commercial AC power supply, so the output sine wave needs to be the same as the phase, frequency and voltage of the power supply. The grid-connected inverter has a safety design that automatically turns off the output if it is not connected to the power supply.
- Battery backup inverters (Battery backup inverters) are special inverters that use batteries as their power source and cooperate with the battery charger to charge the batteries. If there is too much power, it will recharge to the AC power supply. This kind of inverter can provide AC power to the specified load when the grid power fails, so it needs to have the islanding effect protection function.
The production cost of photovoltaic inverters generally consists of three parts: direct materials, direct labor and manufacturing costs.
Raw materials are the main cost component of PV inverter production. It mainly includes radiators and inverter boxes, inductors, transistors, capacitors, IC devices, sensors and PCB boards.
Among them, direct materials accounted for 93%. Among the inverter raw materials, the radiator and inverter box are the parts with the highest purchase cost. Inductors, capacitors, and transistors account for more than 10% of the cost and are important raw materials for procurement.
The following is a review of 10 photovoltaic inverter companies in China:
Huawei is the world’s leading provider of ICT and network energy solutions. Huawei took the lead in integrating digital information technology accumulated over 30 years with photovoltaics, and launched the leading FusionSolar smart photovoltaic solution. On the power generation side, new ICT technologies such as AI and cloud will be further integrated with photovoltaics to create a smart photovoltaic power station with “efficient power generation, intelligent operation and maintenance, safety and reliability, and grid friendliness”, and help photovoltaic become the main energy source. , the United States, Asia Pacific and other global applications.
Huawei’s FusionSolar smart photovoltaic solution is based on the “string” as the basic management unit, and uses the 25-year power station system as a product to achieve the core values of efficient power generation, intelligent operation and maintenance, and safety and reliability. The whole process from power station design, construction to operation and maintenance is carried out Optimization and innovation, and ultimately maximize customer benefits.
Sungrow Power Co., Ltd. (stock code: 300274) focuses on the research and development, production, sales and service of new energy power equipment such as solar energy, wind energy, energy storage, hydrogen energy, and electric vehicles. The main products are photovoltaic inverters, wind power converters, energy storage systems, water surface photovoltaic systems, new energy vehicle drive systems, charging equipment, renewable energy hydrogen production systems, smart energy operation and maintenance services, etc., and are committed to providing world-class services. clean energy full life cycle solutions.
It is worth mentioning that the company has a full spectrum of photovoltaic inverters, covering the power range of 3kW-3MW, including large-scale centralized inverters, medium-power string inverters and household single-phase string inverters, which are exported More than 50 countries and regions in the world, it is one of the most popular Chinese photovoltaic inverter brands in the world.
Main products: SG8K-D, SG10/12RT-20, SG15/17RT-20, SG20/23/25RT-20, SG33/50CX-P2-CN, SG30/40CX-P2-CN, SG100CX, SG110CX-P2- CN, SG136TX
Sineng Electric Co., Ltd. (stock code: 300827) is a national high-tech enterprise focusing on the R&D, manufacturing and sales of power electronic products. Its business covers photovoltaic inverters, energy storage systems, power quality management, power station development, etc. field.
In the field of photovoltaics, Shangneng Electric provides full-scenario photovoltaic power generation solutions. The products cover centralized, string, and distributed inverters in various power segments from 8kW to 6800kW. They are widely used in large-scale ground, mountain, water, industrial and commercial roofs and User and other scenarios to meet the diverse needs of customers.
In the field of energy storage, Sineng Electric provides full-scenario energy storage system solutions, including a full range of 1000V/1500V energy storage converters and system integration products with a variety of centralized and string-type technical routes, targeting the power generation side and power grid. side, user side, microgrid and other multi-scenario applications.
Main products: SP-225K-H, SP-250K-H, SP-320K-H, SP-50K-L, SP-60K-L, SP-70K, SP-110K-BL, SP-136K, etc.
TBEA Xi’an Electric Technology Co., Ltd. is a subsidiary of TBEA Xinjiang New Energy Co., Ltd. The company has a group of professional R&D teams with doctors and masters as the core. It has successively undertaken more than 30 national scientific and technological research projects during the “Tenth Five-Year Plan” and provincial and ministerial scientific research projects, and has become a national 863 major project “Hundred megawatt photovoltaic power station system” Integration and Key Equipment Development” and “Photovoltaic Microgrid Bidirectional Converter Development and Key Technology Research” units.
The company independently develops a full range of 3kW-2500kW grid-connected inverters, a full range of 3kV-35kV/1-120Mvar high-voltage TSVG products and 400V-690V low-voltage power quality products. It has passed many authoritative certifications and tests at home and abroad such as CQC New Energy Standard, TUV, VDE, CE, G59, BDEW, SAA, UL, State Grid Zero Voltage Ride Through, etc. The global stable operation performance has exceeded 15GW.
Main products: TC3125KFT, TC3125KF
Shenzhen Growatt New Energy Co., Ltd. is a national high-tech enterprise specializing in providing solutions for photovoltaic inverters, photovoltaic energy storage systems and user-side intelligent energy management systems. The company’s product series can be widely used in various scenarios of photovoltaic power generation, including household photovoltaic power generation, industrial and commercial rooftop power generation, large-scale ground power stations and other grid-connected power generation systems, as well as photovoltaic off-grid power generation systems in areas without electricity, lack of electricity, and unstable power grids , Microgrid energy storage system applications, etc.
Growatt inverters are sold on a large scale to more than 100 countries and regions in Australia, Europe, America, Asia, Africa, and Latin America. Among them, the total shipments of household inverters have maintained the first place for many years in a row. Inverters are also leading the way.
Main products: MID 20-30KTL3-X2, MID 33-50KTL3-X2, MIN3000-6000TL-X, MOD 3000-6000TL3-X, etc.
Founded in 2005, Sanjing Electric provides professional distributed photovoltaic inverters, energy storage hybrid photovoltaic inverter products and monitoring solutions, general inverters, intelligent water pump inverters, and solar water pump systems.
Distributed photovoltaic inverters have been honored as China’s top ten distributed photovoltaic inverter brands for three consecutive years, and become the largest inverter gold supplier for civilian community photovoltaic projects in Belgium.
Main products: R5 series, R6 series Suntrio Plus series, H1 series, AS1 series
Jiangsu Goodway Power Technology Co., Ltd. is a new energy high-tech enterprise, which has been focusing on the research and development, production and sales of solar photovoltaic inverters and their monitoring products.
GoodWe product design originates from Germany, and the products cover the full power range of 1.0 to 75kW. Now we have developed and produced NS single-phase single-circuit, DNS single-phase double-circuit, SDT, DT three-phase double-circuit, MT three-phase four-circuit, HF high-frequency Frequency isolation, ES bidirectional energy storage, BP energy storage converter, H-ES energy storage integrated machine and other photovoltaic products, the power covers 1.0kW to 75kW. The company’s full series of photovoltaic inverter products have a maximum conversion efficiency of 98.8%, and MPP tracking efficiency of 99.9%, which has reached a world-class level. At the same time, the SEMS smart energy management system was launched to meet the diverse needs of different customers.
Main products: ES series, ET series, ESA series, Lynx Home U series, Lynx Home F series.
Jiangsu Megavolt Aisuo New Energy Co., Ltd. is a high-tech enterprise and software enterprise focusing on inverter R&D and manufacturing. In March 2013, it officially became a holding subsidiary of SMA Group, the world’s leading inverter manufacturer.
ZeverSolar has a full range of photovoltaic grid-connected inverter products from 1kW to 1MW, with a production capacity of 2GW; the centralized photovoltaic inverters produced by Megavolt Aesso have been widely used in large-scale photovoltaics in deserts, tidal flats, plateaus and other regions in China. power station system. String photovoltaic inverters have been sold in dozens of countries and regions overseas.
Main products: Zeverlution PV inverter, Zeverlution S PV inverter, Zeverlution SE PV inverter, Evershine TL PV inverter, etc.
Shanghai Trannergy Power Electronics Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales, and has a number of core technology invention patents. The company is mainly committed to the design and production of solar grid-connected inverters, photovoltaic monitoring systems and photovoltaic system solutions.
The photovoltaic inverter independently produced and developed by the company has the characteristics of high efficiency, high quality, easy installation and convenient after-sales service. It has been widely used in the United Kingdom, Australia, Germany, Denmark, the Netherlands, Austria, Italy, France, Ukraine, In tens of thousands of residential rooftop and commercial PV plants in regions such as Belgium, Mexico, Sri Lanka and Southeast Asia.
Main products: single-phase string inverter SGA series, single-phase string inverter SGN series, three-phase string inverter TRB series, three-phase string inverter TRI series, three-phase string inverter device TRM series.
Shenzhen Clou Electronic Technology Co., Ltd. was established in 1996 and listed on the Shenzhen Stock Exchange in March 2007. It is committed to providing overall solutions for smart grid, new energy applications, and automated logistics technology.
Up to now, Kelu Electronics has branches and marketing networks in more than 30 major cities in China, providing customers with one-stop service of “pre-sale, in-sale and after-sale”. At the same time, it has successfully entered India, Pakistan, Denmark, Italy, South Korea, Russia, Ecuador, Peru, Chile, Brazil, Bulgaria, Bangladesh, Thailand, Singapore, Indonesia, Taiwan and other markets in more than 60 countries and regions around the world.
Except above mentioned Top 10 inverter manufacturer in China. Hlcbattery has been corporating with brand solar inverter factories for the energy storage systems. Generally, they are divided into two models: rack system and home energy storage system(HESS). The system deploys advanced solar and storage power electronic technology, and integrates the premium solar panel, inverter and lithium battery supply chain, focusing on long and steady serve to customers. Please let me know us if any insterests.
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