Active Damping of LLCL Filters Using PR Control for Grid-Connected Three-Level T-Type Converters

Payam Alemi; Seon-Yeong Jeong; Dong-Choon Lee

Active Damping of LLCL Filters Using PR Control for Grid-Connected Three-Level T-Type Converters

Payam Alemi

Seon-Yeong Jeong

Dong-Choon Lee

Vol. 15, No. 3, pp. 786-795, May 2015

10.6113/JPE.2015.15.3.786

Active damping

Grid-connected converter

LLCL filters

PR control

PDF Full-Text

Abstract

In this paper, an active damping control scheme for LLCL filters based on the PR (proportional-resonant) regulator is proposed for grid-connected three-level T-type PWM converter systems. The PR controller gives an infinite gain at the resonance frequency. As a result, the oscillation can be suppressed at that frequency. In order to improve the stability of the system in the case of grid impedance variations, online grid impedance estimation is applied. Simulation and experimental results have verified the effectiveness of the proposed scheme for three-phase T-type AC/DC PWM converters.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

P. Alemi, S. Jeong, D. Lee, "Active Damping of LLCL Filters Using PR Control for Grid-Connected Three-Level T-Type Converters," Journal of Power Electronics, vol. 15, no. 3, pp. 786-795, 2015. DOI: 10.6113/JPE.2015.15.3.786.

[ACM Style]

Payam Alemi, Seon-Yeong Jeong, and Dong-Choon Lee. 2015. Active Damping of LLCL Filters Using PR Control for Grid-Connected Three-Level T-Type Converters. Journal of Power Electronics, 15, 3, (2015), 786-795. DOI: 10.6113/JPE.2015.15.3.786.