13.2 kV Class 3-Phase Solid State Transformer System Based on EtherCAT Communication

Autor: Dong-Keun Jeong, Hyeok-Jin Yun, Si-Ho Park, Myoung-Ho Kim, Myung-Hyo Ryu, Ju-Won Baek, Ho-Sung Kim
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Electronics; Volume 11; Issue 19; Pages: 3092
ISSN: 2079-9292
DOI: 10.3390/electronics11193092
Popis: This paper presents a 13.2 kV class 3-phase solid-state transformer (SST) based on EtherCAT communication. In general, when the structure of the unit module is determined, the number of high-frequency isolated transformers (HFIT) is also proportional to the number of modules. The structure most considered in SST is a 1:1 combination of AC/DC converter and DC/DC converter. To optimally implement a 3-phase SST, a topology for reducing passive elements such as switching elements and HFIT is proposed. It also describes the design of HFIT used in DC/DC converter. EtherCAT communication with high transmission speed and expandability is applied to control the SST composed of unit modules stably, and a multi-core microcontroller unit (MCU) is applied to achieve both a high-speed communication cycle and complicated control algorithm execution. The discussions are validated using a 300 kW 13.2 kV class 3-phase SST prototype in various conditions.
Databáze: OpenAIRE