This paper mainly focuses on low power inverter of low voltage in industry, and research on current detection and protection strategy. After analyzing some of the common detection methods and all the current protection methods, based on the feasibility and protection strategy about IGBT three down bridge with shunt detection. Refer to software implementation and hardware implementation, and the considerations of current protection strategy and hardware solutions. After testing the sample, analyzing and summarizing the advantages and disadvantages of the detection scheme and protection strategy.
Keywords: Inverter, IGBT, Shunt, Current detection, Current protection.