Influence of the Battery Inductance and Battery Resistance on the DC-link Voltage Ripple in Battery-fed PWM Inverter Systems: A Detailed Normalized Investigation

Conference: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07/07/2020 - 07/08/2020 at Deutschland

Proceedings: PCIM Europe digital days 2020

Pages: 8Language: englishTyp: PDF

Mantzanas, Panagiotis; Kuebrich, Daniel; Duerbaum, Thomas (Electromagnetic Fields, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Germany)
Bucher, Alexander; Pawellek, Alexander; Hasenohr, Christian; Hofmann, Harald (Valeo Siemens eAutomotive Germany GmbH, Germany)

In battery-fed pulse-width modulated inverters, the DC-link capacitor represents a limiting factor in terms of power density. A proper DC-link capacitor design requires an accurate prediction of its voltage and current ripple. Parasitic elements such as the battery/cable resistance and inductance affect the DC-link voltage and current ripple. Unfortunately, only a small number of papers incorporates such parasitic elements. Thus, this paper studies the influence of the battery/cable resistance and inductance on the DC-link voltage ripple. The results of this study are presented in a normalized form. Thus, they can be easily applied to any battery-fed pulse-width modulated inverter application.