In a significant stride toward enhancing renewable energy systems, researchers have developed a novel four-port, nonisolated bidirectional DC-DC converter that promises to revolutionize solar photovoltaic (PV) and grid-integrated energy systems. This innovation, led by Sivasankar Nallusamy from the Department of Electrical and Electronics Engineering, addresses the pressing need for flexible, reliable, and efficient power management in modern energy systems.
The converter, detailed in the journal *International Transactions on Electrical Energy Systems*, is designed to overcome the limitations of conventional two-port converter topologies, particularly in high-power applications exceeding 600 watts. “Traditional converters struggle with fluctuating input and load conditions,” explains Nallusamy. “Our four-port converter supports multiple operating modes, allowing adaptable power flow between solar PV, energy storage systems, and both DC and AC loads.”
One of the standout features of this converter is its use of an Arduino UNO microcontroller to govern the MOSFET-based switching system. This approach significantly reduces complexity, cost, and component count while improving switching efficiency. “By employing fewer switches, we minimize switching losses, enhancing overall performance for high-power applications,” Nallusamy adds.
The converter’s versatility is evident in its support for various operating modes, including Single Input Triple Output (SITO), Single Input Double Output (SIDO), Double Input Double Output (DIDO), and Single Input Single Output (SISO). This adaptability makes it well-suited for a range of applications, from solar PV-powered systems to energy storage integration and electric vehicle (EV) charging stations.
To validate their design, the researchers simulated the converter under both open-loop and closed-loop configurations using PSIM and Proteus software. They also developed a hardware prototype to test the system under real-world constraints, including switching losses, voltage drops, and parasitic effects. The comparative analysis revealed a 10% average deviation between simulation and hardware results, which is within acceptable limits for practical deployment.
The implications of this research are far-reaching. As the energy sector increasingly turns to renewable sources, the need for efficient and adaptable power management solutions becomes paramount. This four-port converter offers a scalable, cost-effective, and highly efficient solution that could shape the future of energy systems.
“Our goal is to provide a reliable and efficient power management system that can adapt to the dynamic needs of modern energy systems,” Nallusamy states. “This converter is a step toward achieving that goal, offering enhanced scalability, control simplicity, and energy transfer efficiency.”
As the world continues to transition toward renewable energy, innovations like this four-port converter will play a crucial role in ensuring stable and efficient power delivery. The research not only advances the field of electrical engineering but also paves the way for more sustainable and resilient energy systems.