Details
| Original language | English |
|---|---|
| Title of host publication | 2021 IEEE Energy Conversion Congress and Exposition (ECCE) |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 841-846 |
| Number of pages | 6 |
| ISBN (electronic) | 9781728151359 |
| ISBN (print) | 978-1-7281-5134-2, 978-1-7281-6128-0 |
| Publication status | Published - 2021 |
| Event | 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Virtual, Online, Canada Duration: 10 Oct 2021 → 14 Oct 2021 |
Publication series
| Name | IEEE Energy Conversion Congress and Exposition |
|---|---|
| ISSN (Print) | 2329-3721 |
| ISSN (electronic) | 2329-3748 |
Abstract
In single-phase photovoltaic (PV) power systems, parasitic module capacitances are a well-known issue, as these create a path for high-frequency leakage currents, which can cause electromagnetic interference (EMI) problems. A common method to achieve a limitation of these currents is the harmonization of the common-mode (cm) voltages generated by the modulation of the inverter. The objective of this paper is to provide an overview of the switching states and corresponding cm-voltage waveforms of unipolar modulation techniques for full-bridge (FB) inverters and to identify advantageous modulation schemes. The reactive power switching states are also considered. For the investigations, a modified output filter is used. Further optimization using symmetric half-bridges and asymmetric half-bridges, utilizing two different types of wide bandgap transistors, are discussed in terms of thermal performance and parasitic switching node capacitances. Inverter prototypes of both variants are used for verification and performance analysis.
Keywords
- leakage current, micro-inverter, modulation scheme, photovoltaic, reactive power, single-phase, transformerless, unipolar
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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2021 IEEE Energy Conversion Congress and Exposition (ECCE). Institute of Electrical and Electronics Engineers Inc., 2021. p. 841-846 (IEEE Energy Conversion Congress and Exposition).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Comparison of Modulation Techniques for a Single-Phase Full-Bridge Photovoltaic Micro-Inverter Considering Reactive Power Capability
AU - Brinker, Tobias
AU - Hoffmann, Lennart
AU - Friebe, Jens
N1 - Funding Information: Parts of this work were funded by the German Federal Ministry for Economic Affairs and Energy under Grant No. 03EE1057A (Voyager-PV) and also by the Ministry of Science and Culture of Lower Saxony and the Volkswagen Foundation. The authors are responsible for the content of this publication.
PY - 2021
Y1 - 2021
N2 - In single-phase photovoltaic (PV) power systems, parasitic module capacitances are a well-known issue, as these create a path for high-frequency leakage currents, which can cause electromagnetic interference (EMI) problems. A common method to achieve a limitation of these currents is the harmonization of the common-mode (cm) voltages generated by the modulation of the inverter. The objective of this paper is to provide an overview of the switching states and corresponding cm-voltage waveforms of unipolar modulation techniques for full-bridge (FB) inverters and to identify advantageous modulation schemes. The reactive power switching states are also considered. For the investigations, a modified output filter is used. Further optimization using symmetric half-bridges and asymmetric half-bridges, utilizing two different types of wide bandgap transistors, are discussed in terms of thermal performance and parasitic switching node capacitances. Inverter prototypes of both variants are used for verification and performance analysis.
AB - In single-phase photovoltaic (PV) power systems, parasitic module capacitances are a well-known issue, as these create a path for high-frequency leakage currents, which can cause electromagnetic interference (EMI) problems. A common method to achieve a limitation of these currents is the harmonization of the common-mode (cm) voltages generated by the modulation of the inverter. The objective of this paper is to provide an overview of the switching states and corresponding cm-voltage waveforms of unipolar modulation techniques for full-bridge (FB) inverters and to identify advantageous modulation schemes. The reactive power switching states are also considered. For the investigations, a modified output filter is used. Further optimization using symmetric half-bridges and asymmetric half-bridges, utilizing two different types of wide bandgap transistors, are discussed in terms of thermal performance and parasitic switching node capacitances. Inverter prototypes of both variants are used for verification and performance analysis.
KW - leakage current
KW - micro-inverter
KW - modulation scheme
KW - photovoltaic
KW - reactive power
KW - single-phase
KW - transformerless
KW - unipolar
UR - http://www.scopus.com/inward/record.url?scp=85123375321&partnerID=8YFLogxK
U2 - 10.1109/ecce47101.2021.9595845
DO - 10.1109/ecce47101.2021.9595845
M3 - Conference contribution
AN - SCOPUS:85123375321
SN - 978-1-7281-5134-2
SN - 978-1-7281-6128-0
T3 - IEEE Energy Conversion Congress and Exposition
SP - 841
EP - 846
BT - 2021 IEEE Energy Conversion Congress and Exposition (ECCE)
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Y2 - 10 October 2021 through 14 October 2021
ER -