Analysis and Design of Power Electronic Transformer for Medium Voltage Levels

One key component of the future automation is replacement of conventional distribution transformers by an all-solid-state (power-electronic) alternative. In this paper, the optimum design of a Power Electronic Transformer (PET) will be investigated. In the design process, the PFC and DC-DC converters have been integrated to achieve higher efficiency. The proposed PET performs typical functions and has advantages such as power factor correction, voltage regulation, voltage sag and swell elimination, voltage flicker reduction and protection capability in fault situations. In addition, it has other benefits such as light weight, low volume and no toxic dielectric coolants.

[1]  James L Brooks,et al.  Solid State Transformer Concept Development. , 1980 .

[2]  J. Sebastian,et al.  An overview of power factor correction in single-phase off-line power supply systems , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.

[3]  Prasad Enjeti,et al.  Analysis and design of electronic transformers for electric power distribution system , 1997 .

[4]  Giri Venkataramanan,et al.  Power electronic transformers for utility applications , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[5]  L. Heinemann,et al.  The universal power electronics based distribution transformer, an unified approach , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[6]  S. D. Sudhoff,et al.  A Power Electronic-Based Distribution Transformer , 2002, IEEE Power Engineering Review.

[7]  Lei Li,et al.  Phase-shifted controlled forward mode AC/AC converters with high frequency AC links , 2003, The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003..

[8]  Fan Zhang,et al.  Simple topologies of PWM AC-AC converters , 2003 .