Title :
New Intelligent Semiconductor Transformer With Bidirectional Power-Flow Capability
Author :
Lee, Jonathan Y. ; Yoon, Y.D. ; Han, B.M.
Author_Institution :
Dept. of Electr. Eng., Myongji Univ., Yongin, South Korea
Abstract :
This letter proposes a new intelligent semiconductor transformer (IST) which consists of a bidirectional ac/dc resonant converter, dc/dc converter, and dc/ac converter. This structure provides good voltage-balancing performance on the high-voltage side and a simple control method for bidirectional power flow. The proposed IST was verified though building and testing a single-phase 2 kVA (1.9 kV rms/127 V rms) prototype. A three-phase transformer can be implemented with three units of the proposed IST.
Keywords :
AC-DC power convertors; DC-AC power convertors; DC-DC power convertors; load flow; power semiconductor devices; power transformers; DC-AC converter; DC-DC converter; IST; apparent power 2 kVA; bidirectional AC-DC resonant converter; bidirectional power flow; bidirectional power-flow capability; high-voltage side; intelligent semiconductor transformer; simple control method; three-phase transformer; voltage 1.9 kV; voltage 127 V; voltage-balancing performance; Buildings; Insulated gate bipolar transistors; MOSFET; Resonant frequency; Switches; Voltage control; Voltage fluctuations; AC/DC resonant converter; bidirectional power flow; hybrid switching; input voltage balancing; intelligent semiconductor transformer (IST);
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2013.2288025
