Abstract
Power converters have become a key participant within the modern grid, facilitating the grid's interaction with renewable energy sources and various loads, among others. These converters can also interact with each other, creating harmonics that were previously absent in the grid. While some previous research studies have focused on inter-converter interactions, not much focus has been on the role of pulse width modulators in these inter-converter interactions. This paper focuses on the issue and builds upon harmonic state-space modeling (HSS) to observe inter-converter harmonic interactions. A new modulator model is developed, and its implementation within HSS modeling to observe harmonic coupling between multiple inverters is highlighted. A simulation testbench is developed, and to verify the advantages and limitations of the proposed modeling approach, it is compared with two other traditional modeling methods: namely, average and switching models. The proposed method is shown to be significantly more accurate and informative than conventional average modeling methods and has considerably lower computation costs and simulation time than detailed switching models. The results are verified using extensive simulations on MATLAB.
Original language | English |
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Title of host publication | 2021 6th IEEE Workshop on the Electronic Grid, eGRID 2021 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781665449793 |
DOIs | |
State | Published - 2021 |
Event | 6th IEEE Workshop on the Electronic Grid, eGRID 2021 - New Orleans, United States Duration: Nov 8 2021 → Nov 10 2021 |
Publication series
Name | 2021 6th IEEE Workshop on the Electronic Grid, eGRID 2021 |
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Conference
Conference | 6th IEEE Workshop on the Electronic Grid, eGRID 2021 |
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Country/Territory | United States |
City | New Orleans |
Period | 11/8/21 → 11/10/21 |
Funding
This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
Keywords
- Harmonic Interaction
- Harmonic State Space
- Multi Converter Systems
- Pulse Width Modulator