Abstract
Multiport DC/DC converters (MPC) is becoming a promising configuration to integrate DC grids with different voltage levels. This paper presents a neutral-point clamped (NPC) converter-based MPC (NMPC), which is developed to interconnect medium voltage DC (MVDC) grid and low voltage DC (LVDC) grid. The circuit topology and operation principle of NMPC is first introduced. The soft-switching operation based on zero-voltage switching (ZVS) is developed to reduce switching loss. Simulation verification is implemented to validate the proposed MPC. The proposed NMPC may perform independent bidirectional power flow control among different ports without using decoupling algorithms. The proposed NMPC enables high voltage operation due to the application of 3-level converter. The power characterization of the NMPC is simple, which is beneficial to realize the decoupling power flow control among the interconnected DC ports.
| Original language | English |
|---|---|
| Title of host publication | 2021 IEEE Southern Power Electronics Conference, SPEC 2021 |
| Number of pages | 6 |
| Publication date | 2021 |
| Article number | 9709455 |
| ISBN (Print) | 978-1-6654-3624-3 |
| ISBN (Electronic) | 978-1-6654-3623-6 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | 2021 IEEE Southern Power Electronics Conference (SPEC) - Kigali, Rwanda Duration: 6 Dec 2021 → 9 Dec 2021 |
Conference
| Conference | 2021 IEEE Southern Power Electronics Conference (SPEC) |
|---|---|
| Country/Territory | Rwanda |
| City | Kigali |
| Period | 06/12/2021 → 09/12/2021 |
Keywords
- DC-DC converter
- MVDC grids
- LVDC grids
- Neutral-point clamped converter
- Multi-port dc-dc converter.