Active damping of LCL filter without capacitor voltage sensors for three phase PWM inverter

Active damping of LCL filter without capacitor voltage sensors for three phase PWM inverter

In this paper, new sensorless active damping method of the grid-connected LCL filter for a three-phase PWM inverter is proposed. The resonance component of capacitor voltage of LCL filter is observed by a simple MRAS (Model Reference Adaptive System) observer without additional sensors or circuits....

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Bibliographische Detailangaben
Hauptverfasser: Byoung-Woong An, Hag-Wone Kim, Kwan-Yuhl Cho, Byung-Moon Han, Gyo-Bum Chung
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Active damping
Capacitors
Damping
Equations
Inverters
LCL filter
Mathematical model
MRAS(Model Reference Adaptive System) Observer
Power harmonic filters
Pulse width modulation
SVPWM Inverter
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Beschreibung
Zusammenfassung:In this paper, new sensorless active damping method of the grid-connected LCL filter for a three-phase PWM inverter is proposed. The resonance component of capacitor voltage of LCL filter is observed by a simple MRAS (Model Reference Adaptive System) observer without additional sensors or circuits. The active damping is implemented by feed-forward compensation of the observed capacitor voltage for current controller. The validity of the proposed method is verified by the simulation and experiment.
ISSN:1553-572X
DOI:10.1109/IECON.2013.6700317