Name
Title | ||
|---|---|---|
Digital Low-Pass-Filter-Based Single-Loop Damping For Lcl-Filtered Grid-Tied Inverters |
Abstract | ||
|---|---|---|
Damping the LCL-filter resonance is an essential issue for grid-connected inverters. In most of the prior-art solutions, active damping focuses on a dual-loop architecture, e.g., using the capacitor-current to damp the resonance, thus complicating the entire control loop and/or increasing the cost. Digital filters (such as notch and all-pass filters) directly cascaded into the current controller, referred to as a single-loop scheme, are thus more economical, which feature no extra sensors and a simple open-loop scheme with easy parameter tuning. This paper proposes a practical single-loop damping method for grid-current feedback control (GCF) based on a first-order digital low-pass filter, which realizes damping by lagging the phase and meanwhile reducing the magnitude response for a sufficient gain margin. Simulations verify the proposed method. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/IECON.2018.8591089 | IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY |
Keywords | Field | DocType |
Digital low-pass filter, single-loop damping, GCF, grid-connected inverters, filter-based damping | Control theory,Digital filter,Frequency response,Control theory,Engineering,Control system,Gain margin,Resonance,Grid | Conference |
ISSN | Citations | PageRank |
1553-572X | 0 | 0.34 |
References | Authors | |
0 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Pei Cai | 1 | 0 | 0.68 |
| Xiaohua Wu | 2 | 2 | 2.43 |
| Yongheng Yang | 3 | 30 | 15.47 |
| Wenli Yao | 4 | 12 | 1.20 |
| Frede Blaabjerg | 5 | 1195 | 248.32 |