Abstract

This paper proposes two single closed-loop control methods to achieve unified control of active power filter (APF) and superconducting magnetic energy storage (SMES). For the DC-DC chopper circuit, this paper proposes a fuzzy logic control (FLC) method to achieve the stabilization of the DC link voltage and the charge and discharge control of the SMES coil. For the back-stage DC-AC converter circuit, hysteresis current method realizes tracking control of reference current. The control method enables the SMES device to not only implement active filtering but also to suppress the active power oscillation of the system caused by sudden load changes. The simulation model of the whole system was built by Matlab/Simulink for verification analysis.

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