Hybrid Pulsewidth Modulated Single-Phase Quasi-Z-Source Grid-Tie Photovoltaic Power System

Yushan Liu, Baoming Ge, Haitham Abu-Rub, Hexu Sun

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

A hybrid pulsewidth modulated single-phase quasi-Z-source grid-tie photovoltaic (PV) power system is proposed. The hybrid pulse-width modulation (HPWM) combines the pulse-width modulation (PWM) and the pulse-amplitude modulation (PAM). The PWM works when the ac output voltage is lower than the dc source voltage; otherwise, the PAM operates the single-phase quasi-Z-source inverter (qZSI). The HPWM leads to the reduction of power loss, and the quasi-Z-source capacitance and inductance. An effective control strategy is proposed for the new PV power system to manage the maximum power point tracking (MPPT) of PV panel, grid-tie power injection, and dc-link voltage. A grid-tie current controller, combining a repetitive controller and a proportional-resonant regulator, achieves strong harmonic suppression, fast dynamic, and zero tracking error. A 500-W prototype is built to verify the new system. Power loss estimation and impedance design are detailed. Experimental tests validate the HPWM, new PV power system with higher efficiency, and the related control method.

Original languageEnglish
Article number7398056
Pages (from-to)621-632
Number of pages12
JournalIEEE Transactions on Industrial Informatics
Volume12
Issue number2
DOIs
Publication statusPublished - 1 Apr 2016

Fingerprint

Pulse width modulation
Pulse amplitude modulation
Electric potential
Controllers
Inductance
Capacitance

Keywords

  • photovoltaic power system
  • Pulse-width modulation
  • quasi-Z-source inverter
  • single-phase grid-tie control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Hybrid Pulsewidth Modulated Single-Phase Quasi-Z-Source Grid-Tie Photovoltaic Power System. / Liu, Yushan; Ge, Baoming; Abu-Rub, Haitham; Sun, Hexu.

In: IEEE Transactions on Industrial Informatics, Vol. 12, No. 2, 7398056, 01.04.2016, p. 621-632.

Research output: Contribution to journalArticle

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