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Comparison of Output Current Ripple in Single and Dual Three-Phase Inverters for Electric Vehicle Motor Drives

Author

Listed:
  • Jelena Loncarski

    (Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Box 534, S-751 21 Uppsala, Sweden)

  • Mats Leijon

    (Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Box 534, S-751 21 Uppsala, Sweden)

  • Milan Srndovic

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Claudio Rossi

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Gabriele Grandi

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

Abstract

The standard solution for the traction system in battery powered electric vehicles (EVs) is a two-level (2L) inverter feeding a three-phase motor. A simple and effective way to achieve a three-level (3L) inverter in battery-supplied electric vehicles consists of using two standard three-phase 2L inverters with the open-end winding connection of standard three-phase ac motors. The 3L inverter solution can be usefully adopted in EVs since it combines several benefits such as current ripple reduction, increment of phase motor voltage with limited voltage ratings of the two battery banks, improvement in system reliability, etc . The reduction in current ripple amplitude is particularly relevant since it is a source of electromagnetic interference and audio noise from the inverter-motor power connection cables and from the motor itself. By increasing the inverter switching frequency the ripple amplitude is reduced, but the drive efficiency decreases due to the proportionally increased switching losses. In this paper the peak-to-peak ripple amplitude of the dual-2L inverter is evaluated and compared with the corresponding ripple of the single-2L inverter, considering the same voltage and power motor ratings. The ripple analysis is carried out as a function of the modulation index to cover the whole modulation range of the inverter, and the theoretical results are verified with experimental tests carried out by an inverter-motor drive prototype.

Suggested Citation

  • Jelena Loncarski & Mats Leijon & Milan Srndovic & Claudio Rossi & Gabriele Grandi, 2015. "Comparison of Output Current Ripple in Single and Dual Three-Phase Inverters for Electric Vehicle Motor Drives," Energies, MDPI, vol. 8(5), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:5:p:3832-3848:d:49028
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    References listed on IDEAS

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    1. Gabriele Grandi & Jelena Loncarski, 2013. "Analysis of Peak-to-Peak Current Ripple Amplitude in Seven-Phase PWM Voltage Source Inverters," Energies, MDPI, vol. 6(9), pages 1-19, August.
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    Cited by:

    1. Shailendra Rajput & Eliyahu Farber & Moshe Averbukh, 2021. "Optimal Selection of Asynchronous Motor-Gearhead Couple Fed by VFD for Electrified Vehicle Propulsion," Energies, MDPI, vol. 14(14), pages 1-20, July.
    2. Syed Sabir Hussain Bukhari & Shahid Atiq & Byung-il Kwon, 2016. "Elimination of the Inrush Current Phenomenon Associated with Single-Phase Offline UPS Systems," Energies, MDPI, vol. 9(2), pages 1-16, February.
    3. Md Ragib Ahssan & Mehran Ektesabi & Saman Gorji, 2020. "Gear Ratio Optimization along with a Novel Gearshift Scheduling Strategy for a Two-Speed Transmission System in Electric Vehicle," Energies, MDPI, vol. 13(19), pages 1-24, September.
    4. Borzou Yousefi & Soodabeh Soleymani & Babak Mozafari & Seid Asghar Gholamian, 2017. "Speed Control of Matrix Converter-Fed Five-Phase Permanent Magnet Synchronous Motors under Unbalanced Voltages," Energies, MDPI, vol. 10(10), pages 1-21, September.
    5. Liang Chu & Yi-fan Jia & Dong-sheng Chen & Nan Xu & Yan-wei Wang & Xin Tang & Zhe Xu, 2017. "Research on Control Strategies of an Open-End Winding Permanent Magnet Synchronous Driving Motor (OW-PMSM)-Equipped Dual Inverter with a Switchable Winding Mode for Electric Vehicles," Energies, MDPI, vol. 10(5), pages 1-22, May.
    6. Gabriele Grandi & Jelena Loncarski & Milan Srndovic, 2016. "Analysis and Minimization of Output Current Ripple for Discontinuous Pulse-Width Modulation Techniques in Three-Phase Inverters," Energies, MDPI, vol. 9(5), pages 1-23, May.

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