High-Energy Density Capacitors for Electric Vehicle Traction Inverters

Conference · Mon Jun 01 04:00:00 EDT 2020

DOI:https://doi.org/10.1109/ITEC48692.2020.9161588· OSTI ID:1649202

Chowdhury, Shajjad ^[1]; Gurpinar, Emre ^[1]; Ozpineci, Burak ^[1]

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1. ORNL

DC bus capacitors take up substantial space in a traction inverter, limiting the traction drive power density. Thus, several commercial capacitor technologies, under consideration for use as DC bus capacitors for electric vehicle traction inverters, were reviewed for their ability to optimize the volume of traction inverters and are evaluated in this paper. Three promising capacitor technologies--film, ceramic, and PLZT have been selected for detailed experimental characterization. Experimental results for equivalent series resistance, equivalent series inductance, and effective capacitance with respect to DC bias voltage for various operating frequencies and temperatures are presented. The results reveal the superiority of the PLZT capacitor in terms of power density, current conduction capability, and redundancy.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1649202
• Country of Publication: United States
• Language: English