Voltage regulation of the Y-source boost DC-DC converter considering effects of leakage inductances based on cascaded sliding-mode control

Soheil Ahmadzadeh, Gholamreza Arab Markadeh*, Frede Blaabjerg

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

14 Citations (Scopus)

Abstract

In this study, a sliding mode-based controller is designed for regulating the output voltage of a high step-up DC-DC converter with three coupled inductors called Y-source impedance network. As Y-source converter can provide a very high boost at a lower shoot-through duty cycle of the switch and it has one more degree of freedom to achieve voltage boost. In order to accurately analyse the converter operation, the leakage inductance impact on diodes function in addition to other parasitic elements has been modelled. Hence, four different time intervals corresponding to switch and diode conduction have been considered. Also, an exposition of a variable structure control approach is mentioned. The method employs cascaded slidingmode control (CSMC) to output voltage regulation of the converter. The stability and robustness of the CSMC against the variation of reference voltages and the uncertainties of the load demands have been explained. Simulation and experimental results confirm the capability and effectiveness of the proposed control method.
Original languageEnglish
JournalIET Power Electronics
Volume10
Issue number11
Pages (from-to)1333-1343
Number of pages11
ISSN1755-4535
DOIs
Publication statusPublished - Sep 2017

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