Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/151247
Title: Passivity Enhancement of Grid-Tied Converters by Series LC-Filtered Active Damper
Authors: Haofeng Bai;Xiongfei Wang;Poh Chiang Loh;Frede Blaabjerg
Year: 2017
Publisher: IEEE
Abstract: The series LC-filtered active damper can be used for stabilizing a grid converter tied to the nonideal grid. Its operation principle is to mimic a damping resistance at the resonance frequencies appearing in the grid. However, the selection of the damping resistance has not been fully analyzed in the literature. Its effect with parasitic capacitance present in the grid has also usually been ignored, even though it may bring new challenges to the active damper. To address these issues, passivity is applied to study the grid converter stability before the understanding gained is used for formulating a damping resistance selection method. The method formulated can further be improved by admittance shaping so that system stability can always be ensured even when considering grid parasitic capacitance and control imperfection. Experimental results obtained have verified the expectations, and, hence, the suitability of the presented methods for the series LC-filtered active damper.
URI: http://localhost/handle/Hannan/151247
volume: 64
issue: 1
More Information: 369,
379
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7464845.pdf2.71 MBAdobe PDF
Title: Passivity Enhancement of Grid-Tied Converters by Series LC-Filtered Active Damper
Authors: Haofeng Bai;Xiongfei Wang;Poh Chiang Loh;Frede Blaabjerg
Year: 2017
Publisher: IEEE
Abstract: The series LC-filtered active damper can be used for stabilizing a grid converter tied to the nonideal grid. Its operation principle is to mimic a damping resistance at the resonance frequencies appearing in the grid. However, the selection of the damping resistance has not been fully analyzed in the literature. Its effect with parasitic capacitance present in the grid has also usually been ignored, even though it may bring new challenges to the active damper. To address these issues, passivity is applied to study the grid converter stability before the understanding gained is used for formulating a damping resistance selection method. The method formulated can further be improved by admittance shaping so that system stability can always be ensured even when considering grid parasitic capacitance and control imperfection. Experimental results obtained have verified the expectations, and, hence, the suitability of the presented methods for the series LC-filtered active damper.
URI: http://localhost/handle/Hannan/151247
volume: 64
issue: 1
More Information: 369,
379
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7464845.pdf2.71 MBAdobe PDF
Title: Passivity Enhancement of Grid-Tied Converters by Series LC-Filtered Active Damper
Authors: Haofeng Bai;Xiongfei Wang;Poh Chiang Loh;Frede Blaabjerg
Year: 2017
Publisher: IEEE
Abstract: The series LC-filtered active damper can be used for stabilizing a grid converter tied to the nonideal grid. Its operation principle is to mimic a damping resistance at the resonance frequencies appearing in the grid. However, the selection of the damping resistance has not been fully analyzed in the literature. Its effect with parasitic capacitance present in the grid has also usually been ignored, even though it may bring new challenges to the active damper. To address these issues, passivity is applied to study the grid converter stability before the understanding gained is used for formulating a damping resistance selection method. The method formulated can further be improved by admittance shaping so that system stability can always be ensured even when considering grid parasitic capacitance and control imperfection. Experimental results obtained have verified the expectations, and, hence, the suitability of the presented methods for the series LC-filtered active damper.
URI: http://localhost/handle/Hannan/151247
volume: 64
issue: 1
More Information: 369,
379
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7464845.pdf2.71 MBAdobe PDF