Proportional multi-resonant-based controller design method enhanced with a lead compensator for stand-alone mode three-level three-phase four-leg advanced T-NPC inverter system
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inst Engineering Technology-Iet
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study presents an inverter current sampled double-loop proportional multi-resonant (PMR)-based control technique for three-level (3L) three-phase four-leg (3P4L) advanced T-type neutral point clamped (AT-NPC) stand-alone mode inverter. Apart from the conventional linear controller the PMR controller has the ability to track a sinusoidal reference and does not require any axis transformation. Therefore, the main advantage of the proposed control technique for a 3P4L inverter is to independently control the output phase voltages when feeding a single phase and/or three phase loads. This is achieved by the inverter current sampled double-loop controller with a lead compensator in order to increase the control system phase margin unlike the capacitor current sampled controller. Thus, the harmonic compensation capability of the controller is increased which strengthens the controller against highly non-linear load types. The design procedures of the controller for the system are analytically explained. Then, the steady-state and dynamic performance of the controller is tested in a 3L 3P4L AT-NPC inverter system through many simulations and experimental studies. The results verify the fast-dynamic performance and the achievement of the low total harmonic distortion with a maximum of 2.89% for the 3L 3P4L AT-NPC inverter system even under serious non-linear load type.
Açıklama
Anahtar Kelimeler
PWM invertors, invertors, control system synthesis, electric current control, power grids, harmonic distortion, proportional multiresonant-based controller design method, lead compensator, stand-alone mode three-level, four-leg advanced T-NPC inverter system, inverter current, double-loop proportional multiresonant-based control technique, mode inverter, conventional linear controller, proportional-integral, PMR controller, output phase voltages, phase loads, double-loop controller, control system phase margin, capacitor current sampled controller, harmonic compensation capability, nonlinear load type, AT-NPC inverter system, load types, Voltage Control, Filter, Frame
Kaynak
Iet Power Electronics
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
13
Sayı
4
