[attachment=6774]
Improved Controller for High Temperature Super
Conducting Magnetic Energy Storage (HTS-SMES)


M. V. Aware

D. Sutanto, Senior Member, IEEE,
School of Electrical, Computer
and Telecommunications Engineering
University of Wollongong
Wollongong, Australia

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Abstract—

This paper describes a novel controller for a High
Temperature Superconducting Magnetic Energy Storage (HTSSMES)
that can ensure (a) fast return of energy to the superconducting
coil under constant current mode and (b) a constant
and sinusoidal input supply current irrespective of the varying
load demand with and without harmonics. A special feature of
this controller is its ability to smoothly charge the
superconducting coil using constant current charging so that it
can be ready for the next discharging operation as soon as
possible. Analysis of the circuit operation under hysteresis
control is presented in details. Simulation and experimental
results are presented demonstrating the feasibility of the
proposed power conditioning system.