The difference between a solar inverter and a solar string inverter
With the rapid development of solar technology, solar inverters are increasingly widely used in home and commercial fields. There are two central solar inverters: solar inverters and string solar inverters. There are unavoidable differences between these two types of inverters regarding circuit structure, working principle and application scenarios. We will detail the differences between these two types of inverters to help you better understand their characteristics and applications.
Circuit structure and working principle
1) solar inverter
The solar inverter is a standard solar inverter. Its circuit structure includes an input circuit, inverter circuit and output circuit. The input circuit receives the DC power output from the solar panel, converts the DC power into AC power through the inverter circuit, and finally supplies it for home or commercial use through the output circuit. The solar inverter adopts a parallel circuit structure. Multiple panels are connected. The current output by each panel is summed together and then converted into alternating current through the inverter.
2) Solar string inverter
The solar string inverter is a particular type of inverter that uses a series circuit to connect multiple solar panels one by one, and the current output by each panel is converted through the inverter in turn. Unlike traditional parallel inverters, string inverters have an optimized circuit structure that allows multiple panels to work together more efficiently.
Performance and reliability
solar inverter
Solar inverters have high stability and reliability; under normal operating conditions, their conversion efficiency can reach more than 90%. In addition, solar inverters have a wide input voltage range and are suitable for different types and specifications of solar panels. However, due to the parallel structure of solar inverters, failure of one conference may affect the operation of the entire system.
Solar string inverter
The solar string inverter adopts a series circuit structure. Even if one of the panels fails, it will not affect the entire system's operation, so it has higher stability. In addition, string inverters also have higher conversion efficiency, usually more than 10% higher than solar inverters. Due to the compact structure, small size, and light weight of the string inverter, it is easier to install and maintain.
Application scenarios and scope of application
solar inverter
Solar inverters are suitable for various types of solar panels, including monocrystalline silicon, polycrystalline silicon and thin film cells. Due to their wide input voltage range and high conversion efficiency, solar inverters are widely used in domestic, commercial and industrial areas. In addition, solar inverters also have diversified output power levels to meet the needs of different subscribers.
Solar string inverter
Solar string inverters are suitable for large photovoltaic power stations, industrial parks, public facilities and other fields. In these scenarios, many solar panels usually need to be connected, and the series circuit structure of the solar string inverter can better meet this demand. In addition, the intelligent control function of string inverters also makes them more suitable for constructing and managing smart grids.
Summary and Outlook
There are unavoidable differences between solar and solar string inverters regarding circuit structure, working principle, performance and reliability. Solar inverters have high stability and reliability and are suitable for various solar panels, while string solar inverters have higher conversion efficiency and a more comprehensive range of applications. When selecting an appropriate inverter, broad considerations must be made based on actual application scenarios and needs. In the future, with the continuous advancement of power electronics technology and control algorithms and the development of smart grids, the performance and functions of solar inverters will continue to be improved and improved, making more remarkable contributions to the development and application of renewable energy.
Supplier
PDDN Photoelectron Technology Co., Ltd. is one of the leading enterprises in the Home Accessory and Solar Power System, which is fully involved in developing the power industry, intelligent operation and maintenance management of power plants, solar panels, and related solar products manufacturing. We will be committed to providing users with high-quality, efficient products and considerate service.
It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want a high-quality solar string inverter, please send us inquiries; we will be here to help you.