Development of a DC-Side Direct Current Controlled Active Ripple Filter for Eliminating the Double-Line-Frequency Current Ripple in a Single-Phase DC/AC Conversion System

Ying-Chieh Chen, Liang-Rui Chen, Ching-Ming Lai, Yuan-Chih Lin and Ting-Jung Kuo
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Ying-Chieh Chen: Department of Electrical Engineering, National Changhua University of Education, Changhua 500, Taiwan
Liang-Rui Chen: Department of Electrical Engineering, National Changhua University of Education, Changhua 500, Taiwan
Ching-Ming Lai: Department of Electrical Engineering, National Chung Hsing University, Taichung 402, Taiwan
Yuan-Chih Lin: Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan
Ting-Jung Kuo: Department of Electrical Engineering, National Chung Hsing University, Taichung 402, Taiwan

Energies, 2020, vol. 13, issue 18, 1-16

Abstract: The objective of this paper is to propose an active ripple filter (ARF) using the patented DC-side direct current control for eliminating the double-line-frequency current ripple in a single-phase DC/AC conversion system. The proposed ARF and its control strategies can not only prolong the usage life of the DC energy source but also improve the DC/AC system performance. At first, the phenomena of double-line-frequency current ripple and the operation principle of the ARF are illustrated. Then, steady-state analysis, small-signal model, and control loop design of the ARF architecture are derived. The proposed control system includes: (1) a DC current control loop to provide the excellent ripple eliminating performance on the output of the DC energy source; (2) a voltage control loop for the high-side DC-bus voltage of the ARF to achieve good steady-state and transient-state responses; (3) a voltage feedforward loop for the low-side voltage of the ARF to cancel the voltage fluctuation caused by the instability of the DC energy source. Finally, the feasibility of the proposed concept can be verified by the system simulation, and the experimental results show that the nearly zero double-line-frequency current ripple on the DC-side in a single-phase DC/AC conversion system can be achieved.

Keywords: double-line-frequency current ripple; active ripple filter (ARF); single-phase DC/AC (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
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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