Electric Drive System Efficiency Modeling Based on Polynomial Functions

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Electric Drive System Efficiency Modeling Based on Polynomial Functions

Decker, Lukas / Timmann, Michael / Inderka, Robert / Doppelbauer, Martin

During the dimensioning process of hybrid electric propulsion systems, engineers are confronted with a large variety of possible components. A key influence on overall system efficiency is the electric drive system (EDS). Usually, the comparison of different EDS is limited to comparing loss maps and visualizing their differences. Since loss maps are not easy to handle, a simple model of the efficiency characteristics can be helpful to identify the best component for the specific application. This paper proposes a simplified physics-based approach to model the loss characteristics of an EDS based on polynomial functions. The EDS consists of a permanent magnet synchronous machine (PMSM) and an inverter (INV). The developed model achieves good accuracy for both, the base-speed region and the field-weakening region. The modeled losses are dependent on DC-bus voltage in motor as well as in generator mode. The proposed method allows the description of the EDS efficiency characteristic by only few scalar coefficients and increases thereby the comparability of different EDS.

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Dokumentinformationen

Titel :

Electric Drive System Efficiency Modeling Based on Polynomial Functions

Weitere Titelangaben:

Proceedings

Beteiligte:

Bargende, Michael (Herausgeber:in) / Reuss, Hans-Christian (Herausgeber:in) / Wagner, Andreas (Herausgeber:in) / Decker, Lukas (Autor:in) / Timmann, Michael (Autor:in) / Inderka, Robert (Autor:in) / Doppelbauer, Martin (Autor:in)

Erschienen in:

21. Internationales Stuttgarter Symposium ; Kapitel : 6 ; 74-88

Proceedings

Erscheinungsdatum :

2021-05-14

Format / Umfang :

15 pages

ISBN :

978-3-658-33466-6 , 978-3-658-33465-9

ISSN :

2198-7440 , 2198-7432

DOI :