A Family of High-Gain Single-Switch DC-DC Converters for High-Intensity Discharge Lamps

Abstract

This research paper presents a novel series of high-gain DC-DC converters developed explicitly to power High-Intensity Discharge (HID) lamps. The suggested configurations utilize Voltage Multiplier Cells (VMCs) and incorporate a diode to achieve ground separation. The inclusion of a diode improves voltage gains while ensuring compatibility with the requirements of HID lamps. The modified boost topology maintains a continuous input current and minimizes stress on the input filter capacitors. This study introduces the concepts of Small Signal Modelling and Bode diagrams in the context of controller design. Additionally, open-loop and closed-loop tests are conducted to observe and analyze steady-state and transient responses. The performance of the proposed topologies is analyzed under both ideal and non-ideal operating conditions. The simulation and experimental results are presented for comparison. The benefits of the proposed solutions are underscored by efficiency calculations and a comparative analysis with recently proposed topologies. The experimental findings provide empirical evidence supporting the theoretical conjectures, showcasing an efficiency of more than 93 % for a 60W prototype. Furthermore, these results affirm a strong concurrence among the simulation, experimental, and analytical approaches.

Keywords

• DC-DC converters
• high gain converters
• non-isolated converters