Top 5 string inverter companies in China

As the cost of PV systems continues to fall, the traditional thinking that centralized inverters are more suitable for centralized power stations and string inverters are more suitable for distributed PV is changing. Leaner power plants tend to generate more power string inverters with more power generation benefits.

As a result, string inverters no longer stay at a few kilowatts or tens of kilowatts ten years ago, but have crossed the 100 kilowatt mark and reached more than 200 kilowatts and 300 kilowatts.

In this article, we introduce companies that are able to produce string inverters of more than 200KW. Here are the top 5 string inverter companies in China: Goodwe, Ginlong, Sungrow, Sineng and Growatt.

1. Best list of top 5 string inverter companies in China

① Goodwe

Goodwe's high-power PV inverters are widely used in distributed pv system and ground station projects such as mountain and hilly, agricultural, photonic, fishery and photovoltaic complementation.

With advanced topology and innovative inverter control technology, the maximum 12-channel MPPT achieves conversion efficiency of up to 99%. It supports 1.5x DC overprovisioning, allowing the maximum input current of each string to reach 20A, and is suitable for bifacial high efficiency modules, improving power generation and user investment returns.

At the same time, it also has the functions of string intelligence detection, IV curve scanning, and night SVG, which is intelligently empowered. It plays the role of reducing line loss, energy saving and consumption, and the DC side of communication technology supports the connection of two strings and one convergence, saving cable and construction costs.

② Ginlong

Ginlong three-phase string PV inverter, with 12-channel MPPT(Maximum Power Point Tracking) design, 1500V DC input and 800VAC output, supports more than 200% DC side over-configuration. At the same time, the maximum input current is increased to 15A, which is a perfect match for 500W+ 182/210 bifacial modules, which is the best partner for high power modules and bifacial modules.

The DC side supports "Y" type DC terminal connection, and the AC side supports access to large diameter aluminum alloy cable. At the same time, it is matched with PLC communication mode, which effectively reduces the investment cost of power stations.

The product can choose built-in anti-PID function and AFCI function, and choose non-fuse design, which is safe and maintenance-free. The whole machine reaches IP66 protection level and adapts to various complex environments.

③ Sungrow

As a traditional leader in central inverter, Sungrow is also a leader in the research and development of high-power string inverter products. Its SG 320HX has a rated output of 320 kW and a maximum output of 352 kW.

The maximum efficiency is 99.01%. Up to 16 MPPTs, increasing power generation in complex terrain. The maximum DC of a single string is 20A, and the open platform is interoperable with the tracking bracket data.

④ Sineng

Sineng began to introduce products into distributed PV, and the SP-320K-H is the most powerful string inverter on its website, with a rated output power of 320KW. SP-320K-H has a maximum efficiency of 99.02%, a 12-channel MPPT design, and a maximum input current of 45A.

Adapt to high power components and adapt to complex environments. Equipped with DC switches, safe operation and maintenance, intelligent and friendly. It supports more than 1.5 times the capacity-to-match ratio, and has strong grid adaptability.

⑤ Growatt

Growatt is suitable for large-scale ground power stations, hill power stations, surface power stations, etc. with 1500V system, with a grid-connected access voltage of 800V and conversion efficiency of up to 99%.

It can support up to 240 square meters of AC aluminum cable, saving AC cable investment, communication cable and laying costs. High-precision string monitoring, intelligent IV curve scanning, and support power grid dispatching.

2. Conclusion

The string photovoltaic inverter directly converts the direct current generated by the photovoltaic module into alternating current and then boosts the voltage and connects it to the grid.

Therefore, the power of the inverter is relatively small, and the string photovoltaic inverter below 50kW is generally used in photovoltaic power plants. It is based on a modular concept where each PV string (1-5kW) passes through an inverter.

Several panels form a string, with a power of several hundred watts to thousands of watts, and the access to the low-power single-phase inverter has the maximum power peak tracking at the DC end, and is connected to the grid in parallel at the AC end, which has become the most popular inverter now.

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