Plug-in repetitive control of single-phase grid-connected inverter for AC module applications
Yükleniyor...
Dosyalar
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inst Engineering Technology-Iet
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study presents two-stage inverter topology for single-phase grid-connected photovoltaic (PV) applications and its control implementations. The two-stage systems are reliable and work well. Typically, the second stage inverts solar power into AC power, whereas the first stage which is used to increase low PV panel voltage can achieve maximum power point tracking. In this configuration, a boost or a flyback type DC/DC converter topology is usually employed. However, such converters have major drawbacks such as low efficiency and limited voltage gain due to power losses. In the proposed topology, a low-voltage PV panel can be connected to power grid through solar inverter by using high-gain DC/DC converter which has unique features such as galvanic isolation and continuous current for AC module applications. Conventional controller results in poor control performance due to the finite gain at desired frequencies. Hence, a plug-in repetitive controller is proposed to obtain low total harmonic distortions (THDs). The performance of the proposed system is provided for the system which injects the PV panel current in the maximum power point voltage to a grid of 220 V-(rms) at a power range of 150-300 W with a unity power factor and a low input current THD.
Açıklama
WOS: 000393785200006
Anahtar Kelimeler
harmonic distortion, solar cell arrays, invertors, power grids, maximum power point trackers, power conversion harmonics, electric current control, AC module applications, single-phase grid-connected inverter, two-stage inverter topology, single-phase grid-connected photovoltaic applications, single-phase grid-connected PV applications, control implementations, solar into AC power inversion, low PV panel voltage enhancement, maximum power point tracking, flyback type DC-DC converter topology, solar inverter, power grid, high-gain DC-DC converter, AC module applications, low total harmonic distortions, low input current THD, plug-in repetitive current controller, voltage 220 V, power 150 W to 300 W
Kaynak
Iet Power Electronics
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
10
Sayı
1
