Frontiers of Electrical and Electronic Engineering >

2006 , Vol. 1 >Issue 4: 367 - 370

DOI: https://doi.org/10.1007/s11460-006-0070-8

Digital controller for hybrid filter in HVDC based on approximate inverse system

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  • 1.Department of Electronic Engineering, Tsinghua University, Beijing 100084, China; 2.Electric Power Research Institute, Beijing 100085, China

Published date: 05 Dec 2006

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Abstract

In order to eliminate the characteristic harmonics in high voltage direct current (HVDC) transmission systems and to simplify the analog controller structure, this paper proposes a new digital controller by adopting an approximate inverse system control strategy according to the frequency response characteristic of the hybrid power filter. The proposed digital controller is implemented with a TMS320C32 DSP, including a series of parallel digital band-pass filters, phase shifters and amplifiers. The results of both simulations based on PSCAD and experiments on a 30 kVA HVDC system prove that the proposed digital control system is stable and efficient for eliminating the harmonics.

Cite this article

SU Ling, CHEN Jian-ye, WANG Zan-ji, ZHAO Dong-yuan . Digital controller for hybrid filter in HVDC based on approximate inverse system[J]. Frontiers of Electrical and Electronic Engineering, 2006 , 1(4) : 367 -370 . DOI: 10.1007/s11460-006-0070-8

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