Imposed source current predictive control for battery charger applications with active damping
Küçük Resim Yok
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This paper presents an imposed source current control technique based on model predictivecontrol. This proposed control method can be used for battery charger applications fed fromthree-phase ac grid. The proposed MPC technique allows to charge the battery with a constantcurrent or voltage as what is required for cyclic charge process of batteries. The proposedtechnique ensures unity input power factor operation for grid side. The single-objective costfunction of the predictive control employs the error between supply current reference andsupply current prediction and the switching state that makes this user defined cost functionminimal is selected among the nine switching vector combinations of the current source rectifierso as to apply for next sampling interval. An active damping current term, that is predicted fromthe input filter capacitor voltage estimation is included in the cost function to alleviate theresonance phenomenon of input LC filter. The supply current references in phase with gridvoltages are generated from grid voltages and the amplitude of this reference currents aregenerated from the charging requirements of the battery. The input filter model is used to predictthe filter capacitor voltages at sampling intervals k and k+1 in order to eliminate sensorrequirement for them. The control performance of proposed predictive controller is validatedby simulation works in terms of steady-state behavior, dynamic response and supply currentTHD.
Açıklama
Anahtar Kelimeler
Kaynak
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
23
Sayı
5
