Development of a High Frequency/Power Three-Port SST Suitable for Solar PV/Battery Interface

ÖZDEMİR Ş., ALTIN N., El Shafei A., Nasiri A.

38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023, Florida, Amerika Birleşik Devletleri, 19 - 23 Mart 2023, cilt.2023-March, ss.2313-2320 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 2023-March
  • Doi Numarası: 10.1109/apec43580.2023.10131450
  • Basıldığı Şehir: Florida
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.2313-2320
  • Anahtar Kelimeler: High frequency, high power, multi-port, solid state transformer, three-port
  • Gazi Üniversitesi Adresli: Evet

Özet

In this paper, a three-port Solid State Transformer (SST) is proposed to integrate solar PV and battery in a grid-tie arrangement. Unlike other SSTs, the proposed system has three active ports that are connected via H-bridge inverters allowing bidirectional power flow. Each port is galvanically isolated and power sharing action is achieved by a single high frequency transformer. Different power flow profiles can easily be achieved. The system offers reduced size, weight and cost. However, the transformer design and power control is more complicated in terms of parasitic capacitance, leakage inductance, winding placement and three-way power control. The transformer design steps, control structure, design process, simulation and experimental results are provided for a 100 kW SST system.