Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter

Minghui Lu, Xiongfei Wang, Frede Blaabjerg, S.M. Muyeen, Ahmed Al-Durra, Siyu Leng

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21 Citationer (Scopus)

Abstract

For the grid-connected voltage source inverters, the feedforward scheme of grid voltage is commonly adopted to mitigate the current distortion caused by grid background voltages harmonics. This paper investigates the grid-voltage-feedforward active damping for grid connected inverter with LCL filter. It reveals that proportional feedforward control can not only fulfill the mitigation of grid disturbance, but also offer damping effects on the LCL filter resonance. Digital delays are intrinsic to digital controlled inverters; with these delays, the feedforward control can be equivalent to a damping resistor and a reactance paralleled with filter capacitor. The damping performance in different frequency regions are discussed through Bode diagrams. Compared to other widely used active damping strategies, no extra sensor is needed because the Point of Common Coupling (PCC) voltage is sampled for Phase Locked Loop (PLL). Simulation and experiment results are provided for verifying the theoretical analyses.
OriginalsprogEngelsk
TitelProceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Antal sider6
UdgivelsesstedLong Beach, CA, US
ForlagIEEE Press
Publikationsdatomar. 2016
Sider1941 - 1946
ISBN (Trykt)978-1-4673-8393-6 , 978-1-4673-9551-9
ISBN (Elektronisk)978-1-4673-9550-2
DOI
StatusUdgivet - mar. 2016
Begivenhed2016 IEEE Applied Power Electronics Conference and Exposition (APEC) - Long Beach Convention and Entertainment Center, Long Beach, USA
Varighed: 20 mar. 201624 mar. 2016
http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=32616

Konference

Konference2016 IEEE Applied Power Electronics Conference and Exposition (APEC)
LokationLong Beach Convention and Entertainment Center
Land/OmrådeUSA
ByLong Beach
Periode20/03/201624/03/2016
Internetadresse

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