Hybrid pulsewidth modulated single-phase quasi-Z-source grid-tie Photovoltaic power system

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

A hybrid pulsewidth modulated single-phase quasi-Z-source inverter (qZSI) based grid-tie Photovoltaic (PV) power system is proposed. The hybrid pulsewidth modulation (HPWM) conducts PWM when the required ac output voltage is lower than the dc source voltage, otherwise it performs pulse-amplitude modulation (PAM) for the single-phase qZSI. The low-frequency ripple voltage of dc link is utilized, resulting in reductions of quasi-Z-source inductance and capacitance, as well as power devices' switching actions. Control strategy of the proposed system is further presented to track the maximum power points of the PV panel and to inject the extracted PV power into grid. A grid-tie current controller, combining with the plug-in repetitive control and proportional-resonant regulator, is employed to achieve strong harmonic suppression, fast convergence, and zero tacking error. The system dynamic model is disclosed to design controllers. Simulation and experimental results demonstrate validity of the proposed system.

Original languageEnglish
Title of host publicationAPEC 2015 - 30th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1763-1767
Number of pages5
Volume2015-May
EditionMay
DOIs
Publication statusPublished - 8 May 2015
Event30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States
Duration: 15 Mar 201519 Mar 2015

Other

Other30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
CountryUnited States
CityCharlotte
Period15/3/1519/3/15

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Keywords

  • photovoltaic power conversion
  • pulsewidth modulation
  • quasi-Z-source inverter
  • single-phase grid-tie control

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Liu, Y., Abu-Rub, H., & Ge, B. (2015). Hybrid pulsewidth modulated single-phase quasi-Z-source grid-tie Photovoltaic power system. In APEC 2015 - 30th Annual IEEE Applied Power Electronics Conference and Exposition (May ed., Vol. 2015-May, pp. 1763-1767). [7104585] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2015.7104585