A novel common‐ground switched‐capacitor five‐level inverter with adaptive hysteresis current control for grid‐connected applications

The aim of this paper is to present a new topology single-phase transformerless inverters, which can be tied the local grid as low-scaled ac module system. proposed offers common ground between neutral point and negative terminal dc supply, properly alleviate concern variable mode voltage leakage current problems. This promising feature acquired by both switched-capacitor charge pumped circuit cells. In order inject tightly controlled grid, an adaptive hysteresis controller scheme also presented, guarantee almost fixed switching frequency operation involved power switches. A complete theoretical analysis, comparative study, relevant experimental results are given confirm superior performance topology.