A study introduces a novel solution for photovoltaic (PV) applications, addressing the challenges posed by the cascaded H-bridge multilevel inverter (CMI). Authored in collaboration with researcher Hosseini from Near East University, the study proposes a switched-capacitor (SC)-based cascaded half-bridge multilevel inverter to overcome limitations associated with traditional CMIs.
The proposed topology offers significant advantages over conventional CMIs by requiring only one DC source and minimizing the number of switches. By utilizing half-bridge cells and charging capacitors through a specialized charging unit comprising a charging inductor, a DC source, and multiple diodes, the system achieves spontaneous capacitor charging, voltage boosting, and continuous input current. Additionally, the topology effectively eliminates intermodule leakage currents, enhancing overall efficiency and reliability.
Key features of the proposed topology include self-balancing and boosting capabilities, enabling smooth and continuous current flow from the DC side. With its ability to accommodate unidirectional power flow, the proposed solution emerges as a versatile converter for PV applications.
Simulation and experimental tests validate the feasibility and effectiveness of the proposed topology, confirming its potential to revolutionize PV energy conversion systems. By reducing complexity, improving efficiency, and ensuring reliable operation, this innovative approach holds promise for advancing renewable energy technologies.
More Information:
https://ieeexplore.ieee.org/abstract/document/8735794
