An improved modulation method for low common-mode current non-isolated series simultaneous power supply dual-input inverters for new energy generation applications

Abstract

Abstract Multi-input power supply systems are mostly used in the field of combined power supply of multiple new energy sources, and multi-input inverters play an important role in multi-input power supply systems, but multi-input inverters have the problem of common mode currents. This paper proposes an improved modulation method for a non-isolated series simultaneous power supply type dual-input inverter with low common-mode current for new energy generation applications. The design of a simulation circuit based on the corresponding dual-input inverter shows that this type of inverter can suppress the common-mode current below 30mA and has the advantage of low switching stress, providing an effective single-stage inverter solution for the combined power supply of multiple new energy sources.