A High-Gain and High-Efficiency Three-Port DC-DC Converter Featuring Coupled Inductor and Single Power Switch for Renewable Energy Applications
Ali Ndermohammadi, Pouya Abolhassani, Ali Seifi, Seyed Hossein Hosseini
Abstract
This study introduces an innovative configuration for a two-output high voltage DC-DC circuit. The merits of this circuit encompass diminished voltage stress on semiconductors, the availability of a common ground, and enhanced efficiency. By integrating a coupled inductor (CI), the need for a high-power switch duty cycle is eliminated, leading to diminished conduction losses and improved efficiency. Additionally, the diminished voltage stresses enable the utilize of lower-rated semiconductors, resulting in cost and volume savings. The proposed converter holds potential for power conversion applications to facilitate the immediate utilization of renewable energy sources. To validate the theoretical concepts, a practical implementation of a 240W converter functioning at a frequency of 50 kHz, with an input voltage of 20V, and load voltages of 160V and SOV, has been conducted in the laboratory.