Single Supply Quadruple Boost Nine-Level Switching Capacitor Inverter

Multilevel inverters (MLI) are an important category of power electronic converters, particularly suitable for medium and high voltage power supply applications. When the appropriate multilevel inverter topology is employed, these inverters ensure superior power quality. When designing MLI, it is necessary to consider the complex relationship between the number of components, the voltage stress on the semiconductor device, and the inverter boost capacity. A new single-source simplified element nine-level switching capacitor inverter is proposed in the market, which has a significant advantage. In this paper, On the basis of the proposed deposition pulse width modulation method, it is verified that the topology can still have 4 times the voltage boost function under the 16-cycle switching state, and can obtain continuous input current from DC power supply and self-voltage balance. MATLAB simulation was used to verify the conjecture. The simulation results verify the feasibility and effectiveness of the proposed control strategy, and demonstrate its practical application potential in high-performance power conversion systems.