High-Power High-Step-Up Ratio DC Solid-State Transformer Based on Medium-Frequency Inversion

2018 ◽  
Author(s):  
Jie Zhang ◽  
Fang Liu ◽  
Jinxin Deng ◽  
Zhe Zhang ◽  
Meng Wang
Keyword(s):  
Solid State ◽  
High Power ◽  
Solid State Transformer ◽  
Medium Frequency

scholarly journals Solid-State Transformers in Locomotives Fed through AC Lines: A Review and Future Developments

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4711 ◽  
Author(s):  
Stefano Farnesi ◽  
Mario Marchesoni ◽  
Massimiliano Passalacqua ◽  
Luis Vaccaro
Keyword(s):  
Solid State ◽  
High Power ◽  
Electrical Equipment ◽  
Input Voltage ◽  
Power Converter ◽  
Point Of View ◽  
Power Electronic ◽  
Medium Frequency ◽  
Technical Literature ◽  
Solid State Transformers

One of the most important innovation expectation in railway electrical equipment is the replacement of the on-board transformer with a high power converter. Since the transformer operates at line-frequency (i.e., 50 Hz or 16 2/3 Hz), it represents a critical component from weight point of view and, moreover, it is characterized by quite poor efficiency. High power converters for this application are characterized by a medium frequency inductive coupling and are commonly referred as Power Electronic Transformers (PET), Medium Frequency Topologies or Solid-State Transformers (SST). Many studies were carried out and various prototypes were realized until now, however, the realization of such a system has some difficulties, mainly related to the high input voltage (i.e., 25 kV for 50 Hz lines and 15 kV for 16 2/3 Hz lines) and the limited performance of available power electronic switches. The aim of this study is to present a survey on the main solutions proposed in the technical literature and, analyzing pros and cons of these studies, to introduce new possible circuit topologies for this application.

Solid-State Transformer for Grid Interface of High-Power Multipulse Rectifiers

2018 ◽  
Vol 54 (5) ◽  
pp. 5504-5511 ◽  
Author(s):  
Harish S. Krishnamoorthy ◽  
Prasad N. Enjeti ◽  
Jose J. Sandoval
Keyword(s):  
Solid State ◽  
High Power ◽  
Solid State Transformer ◽  
Grid Interface
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