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Frequency-Domain Analysis and the Effect on Voltage Distribution of the HTS SMES

The high-frequency PWM pulse voltage of SMES power conditioning system (PCS) transmitted to the HTS magnet will influence the security of the magnet. Therefore, to analyze the dynamic response of the magnet with the interaction of the PWM pulse voltage is necessary for the SMES operation. This paper proposes a frequency-domain analysis method for the transient characteristic of the HTS magnet, which can be utilized to analyze the voltage distribution and the frequency response characteristic of the magnet. To evaluate the effectiveness of the proposed method, a sample HTS magnet is assembled to measure its voltage distribution characteristic. Furthermore, the results of amplitude-frequency characteristics coincide with the trend of magnet voltage variation.