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The solar energy market has increasingly seen the entry of high-power photovoltaic modules.
These modules, which typically have powers from 500 W, are manufactured with 182 mm or 210 mm cells, which are becoming a standard in the minigeneration and centralized generation market.
Read about high power modules
The main feature of these new modules is their higher output current. While a standard module has a short-circuit current of around 9 A, high-power modules already reach currents greater than 12 A.
This requires updating the inverters available on the market, so that they can adapt to this new reality. An example of an inverter already updated for high power modules is the KSG-250UH from Kstar.
This is an inverter designed for large-scale plants, with 24 MPPT inputs available. The inverter accepts input currents of up to 20 A per string, perfectly compatible with 182 mm and 210 mm modules.
According to the manufacturer Kstar, among the advantages of the KSG-250UH inverter is the possibility of reducing the LCOE (levelized cost of energy) in large solar plants due to the greater number of direct current inputs.
Each input can receive up to two strings, without the need for fuses, which reduces the complexity and cost of installations.
Furthermore, with this extended range of input current, the inverters become compatible with bifacial modules, which have higher output power due to radiation reflected by the ground, in addition to being suitable for projects with oversizing of photovoltaic modules.
The equipment can receive strings with power twice as high as the nominal input power of the inverter (100% oversizing).
Read about bifacial modules It is oversizing of photovoltaic modules
From an efficiency point of view, the KSG-250UH inverter also has important features. According to the manufacturer Kstar, the equipment reaches a maximum efficiency of 99.03%, which also contributes to minimizing LCOE in photovoltaic projects.
Regarding system safety, this new generation already incorporates a DC switch, has internal class II DPS devices and constantly monitors the DC voltage generated by string via software, identifying possible faults, which can help in preventing and diagnosing problems. , bringing significant gains to the installation.
Other characteristics of the equipment are the IP66 degree of protection and the ability to operate in a stable and long-lasting manner, according to the manufacturer, in environments with temperatures of up to 60 °C.
