A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications

M. Meraj, A. Iqbal, L. Brahim, R. Alammari, Haitham Abu-Rub

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

7 Citations (Scopus)

Abstract

Quazi Z-Source inverter (qZSI) is a promising inverter topology that can buck or boost input voltage without a DC-DC converter and hence can be used in transformerless configuration. This is a high efficiency solution because of single stage processing and conversion. In this paper a novel modified qZSI topology is proposed and new modulation technique is presented to reduce common mode leakage current that is generally present in non-isolated transformers feeding utility grid. The proposed inverter offers a, high efficiency and a high reliability solution in a single-phase solar photovoltaic system for grid integration. Presented topology, (1) uses phase-leg shoot through for boosting the DC voltage to the required level which eliminates the additional DC-DC converter, (2) eliminates the PWM dead-time and provides freewheeling through additional switches (smoothens output AC grid current), (3) minimizes leakage current, (4) avoids body diode conduction for main devices increasing the efficiency of the system because body diode have poor reverse recovery characteristics, (5) effectively utilizes magnetic components, (6) common mode leakage current will be reduced to 0.2% of the rated current which is negligibly small. Simulation and experimental results are verified for a 120V (peak), 15A (peak) at 0.99pf.

Original languageEnglish
Title of host publicationIECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4305-4310
Number of pages6
ISBN (Electronic)9781479917624
DOIs
Publication statusPublished - 25 Jan 2016
Event41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015 - Yokohama, Japan
Duration: 9 Nov 201512 Nov 2015

Other

Other41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015
CountryJapan
CityYokohama
Period9/11/1512/11/15

Fingerprint

Leakage currents
Topology
DC-DC converters
Diodes
Electric potential
Pulse width modulation
Switches
Modulation
Recovery
Processing

Keywords

  • common mode voltage
  • Inverters
  • quasi Impedance source inverters
  • Solar PV

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

Cite this

Meraj, M., Iqbal, A., Brahim, L., Alammari, R., & Abu-Rub, H. (2016). A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications. In IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society (pp. 4305-4310). [7392770] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2015.7392770

A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications. / Meraj, M.; Iqbal, A.; Brahim, L.; Alammari, R.; Abu-Rub, Haitham.

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2016. p. 4305-4310 7392770.

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

Meraj, M, Iqbal, A, Brahim, L, Alammari, R & Abu-Rub, H 2016, A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications. in IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society., 7392770, Institute of Electrical and Electronics Engineers Inc., pp. 4305-4310, 41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015, Yokohama, Japan, 9/11/15. https://doi.org/10.1109/IECON.2015.7392770
Meraj M, Iqbal A, Brahim L, Alammari R, Abu-Rub H. A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications. In IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc. 2016. p. 4305-4310. 7392770 https://doi.org/10.1109/IECON.2015.7392770
Meraj, M. ; Iqbal, A. ; Brahim, L. ; Alammari, R. ; Abu-Rub, Haitham. / A high efficiency and high reliability single-phase modified quasi Z-Source inverter for non-isolated grid-connected applications. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 4305-4310
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