A Study on the development and operational
characteristics of PCS for 10kW class SMES system
Under the Direction of
Professor Yu, In Keun & Park, Minwon
A thesis submitted to the committee of the Graduate
School of Changwon National University in partial
fulfillment of the requirements for the degree of Master
of Science
December 2007
Superconducting magnetic energy storage (SMES) system is having increased attention in power system application because of its higher efficiency and faster response. This paper proposes a high quality power conditioning system (PCS) for the SMES system operation. The PCS consists of a voltage source converter using IGBT (Insulated Gate Bipolar Transistor). In order to compensate several problems such as voltage sag and harmonic current flowing into utility, active filter systems could be a good solution method. SMES is a promising source due to the high response time of charge and discharge. This paper presents a simulation technique for a decision making of the specification of the active filter system combined with SMES system. Through the results of several analyses and simulations carried out by PSCAD/EMTDC, this paper demonstrates the significant effect of SMES on the improvement of power system performance. Based on this simulation, the author developed a PCS connected to the utility system. It was shown that the developed PCS was well-designed and effective.
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