Common mode voltage reduction of single-phase quasi-z-source inverter-based photovoltaic system

Yushan Liu, Baoming Ge, Xiao Li, Yaosuo Xue

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A common mode voltage (CMV) reduction method is proposed for the active power filter (APF) integrated single-phase quasi-Z-source inverter (qZSI) based photovoltaic (PV) power system. The APF integrated qZSI completely compensates the dc-side double-line-frequency ( 2ω ) ripple through the APF capacitor, while maintaining low qZS inductance and capacitance. The proposed method reduces the CMV amplitude to half of that using the traditional sinusoidal pulse width modulation (SPWM). The switching and conduction power losses are analyzed. Simulation and experimental results demonstrate the proposed method reduces CMV without comprising performance and efficiency of the APF integrated single-phase qZSI.

Original languageEnglish
Article number8880657
Pages (from-to)154572-154580
Number of pages9
JournalIEEE Access
Volume7
DOIs
StatePublished - 2019

Funding

This work was supported in part by the Fundamental Research Funds for the Central Universities, under Grant KG12089801, and in part by the Young Scientist Group Program of Beihang University (Group of Service-Oriented Smart Manufacturing), China.

Keywords

  • Common mode voltage
  • pulsewidth modulation
  • quasi-Z-source inverter
  • single-phase inverter

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