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Power Compensation and Power Quality Improvement Based on Multiple-Channel Current Source Converter Fed HT SMES

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5 Author(s)
Zheng Wang ; Sch. of Electr. Eng., Southeast Univ., Nanjing, China ; Chau, K.T. ; Bo Yuwen ; Zhen Zhang
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The purpose of this paper is to propose the high-performance modulation strategy, power control and current regulation schemes for a multiple-channel current source converter (CSC) fed high temperature (HT) superconducting magnetic energy storage (SMES), which can in turn function as the frequency stabilizer and active power filter for the distributed generation system. The key is to design and implement the interleaved space vector modulation technique to suppress the switching harmonics, the dynamic capacitor voltage control to damp LC resonance as well as regulate grid currents accurately, and the DC current balancing strategy to avoid the circulating currents. The multiple-channel CSC fed HT SMES with the proposed control scheme is verified to provide good performance in power compensation and power quality improvement.

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Applied Superconductivity, IEEE Transactions on  (Volume:22 ,  Issue: 3 )