|
Título:
|
On the stability of discrete-time active damping methods for VSI converters with a LCL input filter
|
|
Autor/a:
|
Orellana Barceló, Marcos; Griñó Cubero, Robert
|
|
Otros autores:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Universitat Politècnica de Catalunya. ACES - Control Avançat de Sistemes d'Energia |
|
Abstract:
|
The use of LCL filters with VSI converters is interesting since they present good attenuation of current ripple at high frequencies. Nevertheless, they also present a high resonance peak which can cause undesired oscillations, and even instability
problems. Passive and Active Damping are methods which try to reduce those resonance effects. In this paper, Passive Damping
is briefly reviewed and Active Damping is formally analyzed in continuous-time and, specially, in discrete-time. It will be
shown that the one period delay included in sampled-data control systems and the grid impedance play a very important role in
stability conditions. The presented results are useful to design discrete-time Active Damping controllers. Moreover, important implications for higher level controls can be deduced since the Active Damping is the first control loop in the power converter's controller. |
|
Materia(s):
|
-Àrees temàtiques de la UPC::Informàtica::Automàtica i control
-Automatic control
-Control automàtic |
|
Derechos:
|
|
|
Tipo de documento:
|
Artículo - Versión publicada
Objeto de conferencia |
|
Compartir:
|
|
