A Repetitive Control Scheme Aimed at Compensating the 6 k + 1 Harmonics for a Three-Phase Hybrid Active Filter

Zhaoxu Luo, Mei Su, Jian Yang, Yao Sun, Xiaochao Hou and Josep M. Guerrero
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Zhaoxu Luo: School of Information Science and Engineering, Central South University, Changsha 410083, China
Mei Su: School of Information Science and Engineering, Central South University, Changsha 410083, China
Jian Yang: School of Information Science and Engineering, Central South University, Changsha 410083, China
Yao Sun: School of Information Science and Engineering, Central South University, Changsha 410083, China
Xiaochao Hou: School of Information Science and Engineering, Central South University, Changsha 410083, China
Josep M. Guerrero: Department of Energy Technology, Aalborg University, Aalborg East DK-9220, Denmark

Energies, 2016, vol. 9, issue 10, 1-17

Abstract: The traditional repetitive controller has relatively worse stability and poor transient performance because it generates infinite gain at all the integer multiples of the fundamental frequency, and its control action is postponed by one fundamental period ( T 0 ). To improve these disadvantages, many repetitive controllers with reduced delay time have been proposed, which can selectively compensate the odd harmonics or 6 k ± 1 harmonics with delay time reduced to T 0 /2 and T 0 /3, respectively. To further study in this area, this paper proposes an improved repetitive scheme implemented in a stationary reference frame, which only compensates the 6 k + 1 harmonics (e.g., ?5, +7, ?11, +13) in three-phase systems and reduces the time delay to T 0 /6. Thus compared with the earlier reduced delay time repetitive controllers, the robustness and transient performance is further improved, the waste of control effort is reduced, and the possibility of amplifying and even injecting any harmonic noises into the system is avoided to a great extent. Moreover, the proposed repetitive scheme is used in the control of a three-phase hybrid active power filter. The experimental results validate the effectiveness of the proposed repetitive control scheme.

Keywords: repetitive control; hybrid active power filter; power quality; harmonic compensation (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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