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權營顔 부산대학교 공과대학 1988 硏究報告 Vol.35 No.-
Superconducting Magnet Energy Storage(SMES) has many advantages as energy storage system: high efficiency, fast response, relative easiness to site near load center, nonpolluting, satisfactory economies for large units, and low cost in operation and maintenance. This paper is a study on power control of SMESS. Superconducting magnet of 25 KJ is used and electrical system is composed of power converter part, control part, measuring part, firing part, interfacing part and protection part. Double Graetz bridge is used as a power converter between 3-phase source line and superconducting magnet, and IBM-PC is used for digital control of active and reactive power in control part. Power controls are performed well as shown in experimental results. Harmonics due to power converter is reduced by series transformer connection of delta-delta and wye-delta.