System Parameter Design Method Based on a Serial-Shunt Type Soft Normally Open Point

The soft normally-open point (SNOP) has been proposed as a solution to address issues stemming from new energy generation and other factors. One of the primary topologies for implementing SNOP is the back-to-back voltage converter (BTB-VSC). However, this approach suffers from several drawbacks, including low efficiency, a large volume, and limited control freedom degrees. To overcome these limitations, we propose a new serial-shunt type soft normally open point (SS-SNOP). To achieve better regulation capability, it is crucial to develop a parameter design method related to system parameters. In this paper, a design method is presented for a set of necessary parameters, such as inductors, capacitors, power devices, and so on. Simulation results confirm the effectiveness of the proposed system parameter design method. Overall, the SS-SNOP topology and the proposed parameter design method offer a promising solution for addressing issues related to new energy generation and other factors.