High Frequency Resonance Damping Method for Voltage Source Converter Based on Voltage Feedforward Control

Bo Pang, Feng Li, Hui Dai and Heng Nian
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Bo Pang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Feng Li: State Grid Huaian Power Supply Company, Huaian 223002, China
Hui Dai: State Grid Huaian Power Supply Company, Huaian 223002, China
Heng Nian: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2020, vol. 13, issue 7, 1-16

Abstract: High frequency resonance (HFR) is a subsistent problem which affects the operation of the voltage source converter (VSC) connected to the parallel compensated grid. The appearance of HFR introduces a significant high frequency component in the grid voltage, thereby the operation of VSC system will be seriously affected. For enhancing the operation capability of VSC system, an HFR damping method based on the voltage feedforward control is proposed in this paper, which can reshape the VSC system impedance effectively in a wideband range. Besides, different with the existing HFR damping methods, the proposed method introduces a correction factor instead of the series virtual impedance with fixed value, so that the effect of impedance reshaping is irrelevant to the parameters of controlled object. In addition, this paper analyzes the fundamental control performance of VSC system after equipping the proposed method, for verifying that the proposed method will not worsen the fundamental control. Experimental results are given to validate the effectiveness of the proposed damping method.

Keywords: damping control; high frequency resonance; parallel compensated grid; voltage source converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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