A Digitally Controlled Solid-State Transformer Architecture for Smart Grid-Oriented Low-Voltage DC Distribution Systems
2026 14th International Conference on Smart Grid (icSmartGrid), Suceava, Romanya, 6 - 09 Temmuz 2026, ss.304-308, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/icsmartgrid70882.2026.11680883
- Basıldığı Şehir: Suceava
- Basıldığı Ülke: Romanya
- Sayfa Sayıları: ss.304-308
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Gazi Üniversitesi Adresli: Evet
Özet
Solid-state transformers (SSTs) have emerged as an alternative to conventional transformers by integrating high-frequency power electronic converters and advanced digital control. This paper presents the design and simulation of a one-kilowatt microcontroller-based solid-state transformer prototype. This SST design consists of a two-stage architecture: an AC-DC boost power factor correction (PFC) circuit and a DC-DC phase-shifted full-bridge (PSFB) circuit. An STM32 microcontroller is employed to execute the PI control algorithm. Simulation studies in PLECS software show a total harmonic distortion (THD) of 3.68 percent in the input current, a power factor of 0.9954, and an output voltage ripple of 2.1 percent. The system achieves an overall efficiency of 93.94 percent. These results confirm that the design complies with industrial power quality standards, offering a highly efficient and flexible solution for smart grids, renewable energy systems, and electric vehicle (EV) charging infrastructures.