The string inverter is the core equipment in the solar power system, which undertakes the task of converting the direct current generated by the solar panel into alternating current to meet the needs of grid usage or battery storage. Compared to traditional single-circuit inverters, string inverters offer higher system efficiency, flexibility, and reliability because it allows multiple solar panels to be connected in series to the same inverter.
The key considerations when deciding how many modules should be connected in a string are: First, we must be clear about the power rating of the string inverter used. This is the maximum processing capacity of the inverter, usually measured in kilowatts. This power rating determines the maximum power that the inverter is capable of handling. Second, we need to look at the power rating and voltage of each solar panel. Power ratings are usually measured in watts, while voltage ratings are measured in volts. These parameters are essential to determine the number of tandem panels. Furthermore, when we connect multiple solar panels in series, the total voltage of the strings must be kept within the processing range of the inverter. The total voltage is the product of the rated voltage of each panel and the number of tandem plates. Similarly, the total power of the strings must comply with the power limits of the inverter, which is determined by the product of the power rating of each panel and the number of tandem plates. In addition, we need to pay attention to the maximum input voltage and current of the inverter. We must ensure that the total voltage and current of the string do not exceed the maximum allowable value of the inverter, otherwise it may lead to degraded performance or damage to the equipment. Combining the above factors, the steps to determine the appropriate number of series components in a string are as follows:1Determine the power rating of the string inverter. 2.Study the technical specifications of the solar panel, including its power rating and voltage. 3.Calculate the total voltage and total power of each string to ensure that they are within the processing range of the inverter. 4.Check whether the total voltage and total current of the string are within the maximum input voltage and current range of the inverter. 5.Adjust the number of solar panels in series until all the requirements of the inverter are met. By following these steps, we can determine exactly how many modules should be connected in series in a string, thus ensuring the stable operation and high efficiency of the solar power system.
Okay, let's dive into how to string solar panels reasonably for two 120kw inverters. First of all, we need to understand the maximum input voltage and current of each inverter, and these key parameters are usually clearly given in the technical specifications of the inverter. Suppose the maximum input voltage of each inverter is 1000V and the maximum input current is 250A. Next, let's determine the number of solar panels that each inverter can handle. First of all, we allocate the total power of 120kw to each inverter, so that the usable power of each inverter is 60kw. Then, we want to calculate the total voltage for each string. This voltage is the product of the rated voltage of each solar panel and the number of panels. Assuming the number of boards we choose is n, then the total voltage is 40V*N. At this stage, we want to make sure that the total voltage and current of each string are within the acceptable range of the inverter. For example, if we set the total voltage to be between 800V and 1000V, then we can meet this condition by adjusting the number of boards n. At the same time, we also need to calculate the total current, which can be achieved by dividing the rated power of each board by the rated voltage and multiplying it by the number of boards n. Finally, we need to adjust the number of boards n to ensure that the total voltage and current of each string is within the specifications of the inverter. Such an adjustment can not only maximize the capacity of the inverter, but also ensure the stability and safety of the entire solar power system. Throughout the process, we need to have a deep understanding of the inverter's data and precise calculations to achieve the optimal string configuration. February** Dynamic Incentive Program