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6. Z-Source-Converter-Based Power Conditioning System for Superconducting Magnetic Energy Storage System

Author

Liye Xiao, Chuang Zhao, Li Dafei, Wenyong Guo, and Cai Fuyu

Subjects
Computer science, 020208 electrical & electronic engineering, Magnetic storage, Topology (electrical circuits), 02 engineering and technology, Superconducting magnetic energy storage, AC power, Power (physics), law.invention, Duty cycle, law, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Equivalent circuit, Electrical and Electronic Engineering, Power control
Abstract

Power conditioning system (PCS) is the crucial component of superconducting magnetic storage system (SMES), which determines its power control performance and ability. This paper investigates the feasibility of applying Z source converter (ZSC) as the PCS for SMES. A ZSC-based PCS (ZSC-PCS) for SMES is presented, parameter design methods are analyzed, and a novel minimum power losses control scheme is proposed. By dynamically regulating open zero vector duty ratio to its minimum required level, the ZSC-PCS can enlarge both active and reactive power capability of SMES with lowest power losses. The feasibility of the proposed approach is verified by the experimental results on a kVA scale prototype.

Published
2019

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