Resonance damping of LCL filter based grid-connected inverter

Three-phase PWM inverters are connected to the grid by an LC or an LCL filter. Although an LCL filter is more effective since it more efficiently attenuates the switching harmonics, but it causes stability problems. To enable a stable operation, either a damping resistor or an active damping algorit...

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Bibliographic Details
Main Authors: Sang-Hyub Han, Jong-Hyoung Park, Heung-Geun Kim, Honnyong Cha, Tae-Won Chun, Eui-Cheol Nho
Format: Conference Proceeding
Language:English
Subjects:
Active damping
control of three-phase pulse width modulated (PWM) inverter
Inductors
Inverters
LCL filter
Lead
Switches
Online Access:Request full text
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Summary:Three-phase PWM inverters are connected to the grid by an LC or an LCL filter. Although an LCL filter is more effective since it more efficiently attenuates the switching harmonics, but it causes stability problems. To enable a stable operation, either a damping resistor or an active damping algorithm has to be used. However, while a damping resistor causes additional losses, to avoid these disadvantages, this paper shows simulation results of a simple active damping solution which is suitable for industrial applications.
DOI:10.1109/IPEMC.2012.6258937