A New Approach to Evaluating Aging in Passive Networks of Traction Inverters via Impedance Variation
Year: 2025
Type: conference-paper
Abstract: Ensuring electromagnetic compatibility in electric vehicles is crucial, along with minimizing DC bus voltage ripple caused by inverter switching to maintain system stability and performance. The circuit consisting of the electromagnetic interference filter and the DC-link capacitor is a passive network that represents one of the most critical systems of the inverter in terms of reliability. This paper presents a novel method for the characterization of DC-link capacitor aging and detection of electromagnetic interference filter degradation using impedance response analysis. This method enables distinguishing between the aging of the electromagnetic interference filter and the DC-link capacitor through a single measurement, without the need to open the inverter, requiring access only to the high-voltage DC terminals.
Authors: Quirc Pérez Farré, Luis F. Gomez Rivera, Carlos Lopez Torres, Antoni García Espinosa, Alejandro Paredes Camacho
Institution: Universitat Politècnica de Catalunya
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4415968574