Characterization of High Voltage Power Net in Heavy Duty Fuel Cell Truck with Focus on Current Ripples
Conference: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/09/2023 - 05/11/2023 at Nürnberg, Germany
doi:10.30420/566091136
Proceedings: PCIM Europe 2023
Pages: 8Language: englishTyp: PDF
Authors:
Guerlek, Yavuz; Ackerl, Martin; Dold, Roland (Daimler Truck AG, Germany)
Basler, Thomas (Chemnitz University of Technology, Germany)
Neuburger, Martin (Esslingen University of Applied Sciences, Germany)
Xu, Hongyu (Daimler Truck, China)
Abstract:
Heavy-duty fuel cell trucks (HDFCT) have complex High Voltage (HV) power net architectures. This work focuses on characterization of an entire HDFCT HV power net architecture with the help of a frequency analysis. Since there are several sub inverters with variable switching frequencies connected to a common DC-bus, the whole system becomes complex with respect to control and overlaying effects. Dominant frequencies and currents are analyzed by real measurements at a prototype truck. As the switching of inverters generate current ripples, a simulation model based on impedance measurements and a tool chain to analyze different driving modes of the truck is set up-like acceleration and braking. The impact of these driving modes on the characterized HV power net is explained, and validated in this publication.