Comparative feasibility study of partial power converter for interfacing battery energy storage into power system of future circular collider

Abstract

The recent appearance of partial power converters has shown their potential to significantly improve the efficiency and power density of power electronic systems. However, their feasibility in different applications is not sufficiently studied. This paper examines a partial power converter based on the dual active bridge topology regarding its feasibility and performance for battery integration into the cells of a modular multilevel converter that feeds particle accelerator magnets. The simulation results prove that the given partial power converter can reject grid­frequency ripple on the battery side and control current with sufficient dynamics. Its comparison with typical DC­-DC topologies reveals its acceptable cost, high efficiency, and power density. The findings are based on the numerical simulation in the MATLAB/Simulink environment and virtual prototyping based on available off­the­shelf components.

Keywords

• power electronics
• dc­dc converter
• energy conversion efficiency
• power density
• particle accelerator