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Cited by 51Multilevel Inverters and ConvertersElectric and Hybrid Vehicle TechnologiesElectromagnetic Compatibility and Noise Suppression

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Battery Loss and Stress Mitigation in a Cascaded H-Bridge Multilevel Inverter for Vehicle Traction Applications by Filter Capacitors

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Kersten, Anton, Theliander, Oskar, Grunditz, Emma Arfa, Thiringer, Torbjorn, Bongiorno, Massimo·2019·IEEE Transactions on Transportation Electrification
DOI 10.1109/tte.2019.2921852
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Abstract

In this paper, two types of filter capacitors of varying capacity were connected to the battery packs of a cascaded H-Bridge single-star multilevel vehicle traction inverter, and their influence on the battery losses has been analyzed. The battery and capacitor simulation models used are experimentally verified in a downscaled system. Different capacitor configurations were simulated for four-drive cycle scenarios to determine the potentials for the mitigation of current pulse stresses and battery loss reduction with respect to the added weight. By adding capacitors corresponding to a weight of 4% of the initial battery storage, the peak current is reduced by 5%-20%, depending on the operating point from dc to a few kilohertz, and the battery losses are reduced by 10%. In comparison, it is demonstrated that adding supercapacitors is more beneficial for lower output frequencies, while adding electrolytic capacitors is better for higher output frequencies. Furthermore, the low-order voltage harmonics of the dc-rails between the converter and battery were reduced by 10%-30% for frequencies above 9 kHz, which decreases the potential of electromagnetic disturbances. In addition, during cold battery temperatures, when it is very important to avoid heavy cyclings, the loss reduction using the capacitors was 2.5 times larger than for nominal temperature.

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Metadata

Authors
Kersten, A., Theliander, O., Grunditz, E. A., Thiringer, T., & Bongiorno, M.
Affiliations
Chalmers University of Technology (SE)
ORCID
Venue
IEEE Transactions on Transportation Electrification
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published
2019-09
Volume
5
Issue
3
Pages
659-671
ISSN
  • 2332-7782 (ISSN-L)
  • 2372-2088
DOI
10.1109/tte.2019.2921852
OpenAlex
W2953190270
Cited by
51
References
0
Citations by year
2026: 4 · 2025: 6 · 2024: 3 · 2023: 4 · 2022: 8 · 2021: 14 · 2020: 7 · 2019: 5
FWCI
3.06
Type
journal article
Language
en
Open access
Licence
Locations
  • IEEE Transactions on Transportation Electrification (publishedVersion)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
Funders
Swedish Energy Agency is gratefully acknowledged
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Multilevel Inverters and Converters
  • Physical Sciences › Engineering › Automotive Engineering › Electric and Hybrid Vehicle Technologies
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electromagnetic Compatibility and Noise Suppression
Keywords
cascaded H-bridge inverter, filter capacitor, supercapacitors, electrolytic capacitors, electromagnetic perturbations, battery cycling, battery pack

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