Pulsed Power Generation Circuit Based on Parallel Hybrid Energy Storage

Hybrid energy storage (HES) is a new approach that combines capacitive energy storage (CES) and inductive energy storage (IES), and parallel HES (P-HES) is one of the most basic structures of the HES method. As the name suggests, P-HES refers to that a capacitor and an inductor are connected in parallel to discharge. Its operation is controlled by power devices, so due to the controllability, the adjustability of P-HES circuits can be achieved. In this study, we first elucidated the principles and basic characteristics through the simulation on one P-HES module. Then, a P-HES experimental platform was built based on SiC MOSFETs and the feasibility of its operation was verified through experiments. After that, we proposed two superimposed topologies, which can achieve voltage adding, one is modular circuit and the other is a simplified circuit. As a result, the feasibility of these two superimposed circuit structures is experimentally demonstrated, and their output consistency is also evident. In addition, the miniaturization of the simplified three-stage circuit has been achieved through the three-series design of the switching unit.