Novel dynamic conditioning unit for the reproduction of real driving conditions on a test bed
Tóm tắt
The importance of thermal management has increased with the advent of electrification and fuel cell. The dynamic response required from the thermal circuit has also increased and cannot be reproduced by today’s conditioning systems. This contribution describes a novel, considerably more powerful conditioning concept with three main characteristics:
The new conditioning concept is validated via simulation as well as by an application on a powertrain test bed. The system proved to be extremely robust in its function due to the consideration of all influencing parameters and, in addition, it is easy to use: no time-consuming configuration work is required prior to installation, nor when changing the test bed or the unit under test. The foundation for this is the model-based control that is based on a direct relationship between the temperature of the medium and the setpoint value. For the first time, temperature traces previously measured under real operation conditions can be reproduced and even temperature gradients of up to 60 K/s can be followed. The dynamic conditioning unit described here will be extended by a transient, real-time capable simulation model to a thermal emulator. This will enable future thermal management functions to be developed and optimized in ThermoLabs.
Tài liệu tham khảo
Beidl, C., Hipp, J., Hohenberg, G., Geneder, S.: RDE-thermal management - From road to rig. In: Bargende, M. (ed.) 19. Internationales Stuttgarter Symposium, pp. 855–875. Springer Vieweg, Wiesbaden (2019)
Höhn, P., Widdershoven, J., Stommel, P.: Simulation of a cooling fluid conditioning system for combustion engines using Simscape. In: 3rd Biennial International Conference on Powertrain Modelling and Control Testing, Mapping and Calibration. Loughborough, 7th–9th September 2016, pp. 1–12 (2016)
Paulweber, M., Lebert, K.: Mess- und Prüfstandstechnik. Springer Vieweg, Wiesbaden (2014)
Koller, A., Raiser, H., Mayr, C., Walcher, M., Ciglar, D.: ThermoLab for battery electric vehicle–thermal development on testbeds. In: Proceedings 8th International Symposium on Development Methodology. Wiesbaden (2019)
IVD: Verfahren und Einrichtung zur Regelung oder Steuerung der thermischen Bedingungen an einem Prüfstand. European patent specification. EP 3 293 504 B1, priority date 13.9.2016, publication date 3.4.2019 (2019)
Poruba, C., Seider, G., Kröner, M.: Energiebilanzierung im Entwicklungsprozess von Motoren. In: Steinberg, P. (ed.) Wärmemanagement des Kraftfahrzeuges V. Expert verlag, Renningen, pp. 54–80 (2006)
Mohtasebi, S.S., Shirazi, F.A., Javaheri, A., Nava, G.H.: Modeling and fuzzy control of the engine coolant conditioning system in an IC engine test bed. J. Mech. Sci. Technol. 24, 2323–2331 (2010)
Martyr, A., Plint, M.: Engine testing-Theory and Practice, 3rd edn. Elsevier, Oxford (2007)
Dellner, M.: Modellbasierte Applikation Thermomanagement. Dissertation, Karlsruher Institut für Technologie (2017)
Bernhard, F.: Handbuch der Technischen Temperaturmessung, 2nd edn. Springer, Berlin (2014)
Sarnes, B., Schrüfer, E.: Determination of the time behaviour of thermocouples for sensor speedup and medium supervision. Proc. Estonian Acad. Sci. Eng. 13, 295–310 (2007)
Augustin, S., Fröhlich, T.: Dynamisches Verhalten von Berührungsthermometern unter Berücksichtigung der Temperaturabhängigkeit der Materialdaten-Erweiterung der VDI/VDE-Richtlinie 3522. tm 83, 402–409 (2016)
Güther, T., Bänicke, H., Ament, C., Augustin, S., Fröhlich, T.: A model-based temperature estimator for improving sensor dynamics in vehicle exhaust systems. In: IECON 2013—39th Annual Conference of the IEEE Industrial Electronics Society. IEEE, Piscataway, pp. 3852–3857 (2013)
Kar, K., Roberts, S., Stone, R., Oldfield, M., French, B.: Instantaneous exhaust temperature measurements using thermocouple compensation techniques. J. Fuels Lubr. 113, 652–673 (2004)
Schaal, P., Mason, B., Filippou, S., Souflas, I., Cary, M.: Robust Methodology for Fast Crank Angle Based Temperature Measurement. SAE Technical Paper, No. 2016-01-1072 (2016)
Zimmerschied, R., Isermann, R.: Nonlinear time constant estimation and dynamic compensation of temperature sensors. Control Eng. Pract. 18, 300–310 (2010)
Spitzer, F.: Untersuchungen zur Darstellung RDE naher thermischer Bedingungen am Prüfstand. Preliminary Master Thesis, TU Graz (2020)
Bassiouny, M.K., Martin, H.: Flow distribution and pressure drop in plate heat exchangers–I. Chem. Eng. Sci. 39, 693–700 (1984)