Application of high current sensor in current test of large capacity photovoltaic inverter

As one of the main sources of renewable energy, photovoltaic power generation has been widely used and developed rapidly around the world in recent years.
With the development of the photovoltaic industry, the application of high-voltage photovoltaic systems is becoming more and more extensive. This development trend is mainly due to the consideration of improving system efficiency, reducing line loss, reducing system cost and meeting the needs of large-scale photovoltaic power plants. Higher voltage levels can increase the efficiency of photovoltaic cell modules, reduce energy loss, reduce resistive losses, reduce material usage, simplify power system design, and improve overall economics.

Photovoltaic inverters play an important role in photovoltaic power generation systems and can directly affect the power generation efficiency of solar photovoltaic systems.Its main function is to convert the direct current generated by the solar panel module into an electronic device with adjustable frequency alternating current, which can be fed back to the commercial power transmission system or used by the off-grid system. In order to ensure the quality and performance stability of photovoltaic inverters, factory testing is an essential. In high-voltage photovoltaic systems, due to the higher voltage and power requirements, a large-capacity inverter is usually required to convert the direct current generated by the solar photovoltaic panels into alternating current. Since the AC current output by a large-capacity inverter may be very large, in order to ensure the safety and stability of the system, a high-current sensor is required for current testing.