Projekter pr. år
Abstrakt
This paper investigates the active damping of LCLfilter resonance within singleloop grid current control of gridconnected voltage source converters. First, the basic analysis in the continuous sdomain reveals that the gridcurrentfeedback active damping forms a virtual impedance across the gridside inductor, and the use of a highpass filter with a negative sign shapes the virtual impedance by an RL damper paralleled by a negative inductance. It is further found that such a negative virtual inductance plays a critical role in mitigating the phase lag caused by the time delay in a digital control system. The instability induced by the negative virtual resistance, which is commonly experienced in the feedbacktype active damping, can thus be avoided. A systematic design method of the highpass filter is also proposed by the help of root locus analysis in the discrete zdomain. Lastly, experimental tests are presented to validate the theoretical analysis.
Originalsprog  Engelsk 

Titel  Proceedings of the 2014 IEEE Energy Conversion Congress and Exposition (ECCE) 
Antal sider  8 
Forlag  IEEE Press 
Publikationsdato  sep. 2014 
Sider  373380 
ISBN (Trykt)  9781479957767 
DOI  
Status  Udgivet  sep. 2014 
Begivenhed  2014 IEEE Energy Conversion Congress and Exposition (ECCE)  Pittsburgh, Pittsburgh, USA Varighed: 14 sep. 2014 → 18 sep. 2014 
Konference
Konference  2014 IEEE Energy Conversion Congress and Exposition (ECCE) 

Lokation  Pittsburgh 
Land  USA 
By  Pittsburgh 
Periode  14/09/2014 → 18/09/2014 
Fingeraftryk Dyk ned i forskningsemnerne om 'Analysis and design of gridcurrentfeedback active damping for LCL resonance in gridconnected voltage source converters'. Sammen danner de et unikt fingeraftryk.
Projekter
 1 Afsluttet

HARMONY: HARMONY  Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
01/02/2013 → 28/02/2018
Projekter: Projekt › Forskning