Control design of three-level voltage source inverter for SMES power conditioning system

This paper describes the control design of the power processing system for superconductive magnetic energy storage (SMES). The proposed SMES power-processing system consists of series connection of a three-level voltage source inverter and a three-level chopper. The control design enables stable high-bandwidth control of power transfer to and from the SMES coil. The issues of series connection of power converters are discussed. Theoretical analysis of the controller design and experimental results are presented.

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