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Application of five-phase PM synchronous machines in electrical traction drive systems

Einsatz von fünfphasigen PM-Synchronmaschinen in elektrischen Traktionsantriebssystemen

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Abstract

Three-phase electrical machines in traction applications on electrified passenger cars are operated in inverter-fed operation over wide speed ranges. With a high dynamic e-machine control and the operation with inverter switching frequencies above 10 kHz, high performance requirements can be achieved in terms of high drive dynamics, optimum operating points (⇒ system efficiency optimizations), satisfying torque accuracies and low parasitic effects (e.g., current ripple, harmonic losses, pulsating torques and magnetic noise). For these applications five-phase permanent magnet synchronous machines with a dual frequency operation can be drawn into account for an increase of the cost-benefit ratio on drive system level and further system benefits. In this contribution some base considerations regarding e-machine design and motor control are presented. The application of a third harmonic injection and the gained benefit is shown for a built-up and measured e-machine sample.

Zusammenfassung

Dreiphasige Elektromaschinen in Traktionsanwendungen auf elektrifizierten PKWs werden über weite Drehzahlbereiche am Umrichter betrieben. Mit einer hochdynamischen Elektromaschinenregelung und dem Betrieb mit Umrichterschaltfrequenzen über 10 kHz können hohe Leistungsanforderungen erfüllt werden, etwa hohe Antriebsdynamik, optimale Betriebspunkte (⇒ Systemwirkungsgradoptimierungen), ausreichende Drehmomentgenauigkeiten und geringe parasitäre Effekte (wie z. B. Stromwelligkeiten, Oberschwingungsverluste, Pendeldrehmomente und magnetische Geräusche). Für diese Anwendungen können auch fünfphasige permanenterregte Synchronmaschinen mit einer Zweifrequenzspeisung in Betracht gezogen werden – für eine Steigerung des Kosten-Nutzen-Verhältnisses des gesamten Antriebssystems und weiterer Systemvorteile. In diesem Beitrag werden einige Basisbetrachtungen hinsichtlich E-Maschinen-Design und Motorregelung präsentiert. Das Injizieren einer dritten Harmonischen wird anhand von Messungen an einem Muster dargestellt.

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Authors and Affiliations

  1. Vitesco Technologies, Sickingenstr. 42-46, 10553, Berlin, Germany

    Wilhelm Hackmann & Sachar Spas

  2. Vitesco Technologies, Siemensstr. 12, 93055, Regensburg, Germany

    Sebastian Kowarschik, Josef Laumer & Michael Wiesinger

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  1. Wilhelm Hackmann
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  2. Sachar Spas
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  3. Sebastian Kowarschik
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  4. Josef Laumer
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  5. Michael Wiesinger
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Correspondence to Wilhelm Hackmann.

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Hackmann, W., Spas, S., Kowarschik, S. et al. Application of five-phase PM synchronous machines in electrical traction drive systems. Elektrotech. Inftech. 137, 250–257 (2020). https://doi.org/10.1007/s00502-020-00813-w

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  • DOI: https://doi.org/10.1007/s00502-020-00813-w

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