3 MJ/750 kVA SMES System for Improving Power Quality

Authors :: Jeonwook Cho
E.Y. Lee
Seon-Won Kim
Ki-Chul Seong
Seog-Whan Kim
Kideok Sim
H.J. Kim
Joon-Han Bae
Kyung-Woo Ryu
Source :: IEEE Transactions on Applied Superconductivity. 16:574-577
Publication Year :: 2006
Publisher :: Institute of Electrical and Electronics Engineers (IEEE), 2006.
Abstract: The purpose of this study is to develop a superconducting magnet energy storage system (SMES), which protects sensitive loads on the power system, when an interruption or voltage sag occurs. Industries have many sensitive machines, and keeping the power in a good condition is very important for nonmilitary machines also. Korea Electrotechnology Research Institute (KERI) has developed a 3 MJ/750 kVA SMES system to improve power quality in sensitive electric loads. It consists of an IGBT based power converter, NbTi mixed matrix Rutherford cable superconducting magnet, and a cryostat with HTS current leads. The operating current of the 3 MJ SMES magnet was 1000 A. The SMES system is tested under short time power interrupt to verify the feasibility of the SMES system as a 750 kVA power converter