Reinjection Five Level Current Source Converters for Individual Parallel-bridge Power Decoupling

Reinjection Multilevel Current Source Converters are high-power converters that combine harmonic reinjection, soft switching, and multilevel technology to ensure improved performance in terms of capacity, efficiency, and control flexibility. However, achieving power decoupling control often requires the use of a double parallel-bridge structure, which significantly increases costs and reduces competitiveness. This paper investigates a reinjection five level current source converter (RFCSC) for individual parallel-bridge power decoupling. This topology introduces a degree of freedom (duty cycle) by connecting a diode in parallel to the branch inductor of the reinjected bridge, enabling individual parallel-bridge power decoupling control. Additionally, the new topology has been verified using a simulation platform, and the simulation results demonstrate a comprehensive investigation of the converter.