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

Title
Active Damping of LLCL Filters Using PR Control for Grid-Connected Three-Level T-Type Converters
Author(s)
이동춘알레미파얌정선영
Keywords
LCL-FILTER; STABILITY ANALYSIS; PWM RECTIFIERS; TIED INVERTER; POWER FILTER; DESIGN; IMPLEMENTATION; IMPEDANCE; RESISTOR
Issue Date
201505
Publisher
KOREAN INST POWER ELECTRONICS
Citation
JOURNAL OF POWER ELECTRONICS, v.15, no.3, pp.786 - 795
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.
URI
http://hdl.handle.net/YU.REPOSITORY/32534http://dx.doi.org/10.6113/JPE.2015.15.3.786
ISSN
1598-2092
Appears in Collections:
공과대학 > 전기공학과 > Articles
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