access icon openaccess Design of a 100 kHz wide bandgap inverter for motor applications with active damped sine wave filter

In this study, a three-phase motor inverter with sinusoidal output voltages based on the application of gallium nitride transistors and advanced control is analysed. In comparison to standard silicon-insulated gate bipolar transistors much higher feasible switching frequencies of 100 kHz and above are possible and reduce the output sine filter component size such that the filter can be directly included into the inverter. This considerably improves the electromagnetic interference (EMI) behaviour of the drive system as well as the acoustic noise, eases the inverter-to-motor wiring and protects the motor isolation against high du/dt rates. The study describes the dimensioning and design of the used two-stage LC filter including motor current control based on proportional-integral-type phase current controllers. The LC filter damping is performed actively by capacitor current feedback. Using this active damping scheme avoids additional losses of conventional sine filters and guarantees high system efficiency up to 98%. Finally, experimental results of a laboratory prototype verify the proper behaviour of the proposed concept.

Inspec keywords: capacitors; motor drives; electric current control; gallium compounds; insulated gate bipolar transistors; PWM invertors; invertors; power filters; damping; machine control; power convertors; electromagnetic interference

Other keywords: three-phase motor inverter; sinusoidal output voltages; conventional sine filters; 100 kHz wide bandgap inverter; two-stage LC filter including motor current control; output sine filter component size; LC filter damping; frequency 100.0 kHz; motor applications; gallium nitride transistors; advanced control; active damped sine wave filter; EMI behaviour; proportional-integral-type phase current controllers; capacitor current feedback; active damping scheme; inverter-to-motor wiring; motor isolation; standard silicon-insulated gate bipolar transistors; drive system; higher feasible switching frequencies; guarantees high system efficiency

Subjects: Drives; Other power apparatus and electric machines; Control of electric power systems; Power electronics, supply and supervisory circuits; Electromagnetic compatibility and interference; Power convertors and power supplies to apparatus; Capacitors; Current control

References

    1. 1)
      • 9. Astrom, K., Wittenmark, B.: ‘Computer controlled systems: theory and design’ (Prentice-Hall, New Jersey, USA, 1990, 2nd edn.).
    2. 2)
      • 3. Nussbaumer, P., Zoeller, C., Wolbank, T.M., et al: ‘Transient distribution of voltages in induction machine stator windings resulting from switching of power electronics’. IECON 2013 – 39th Annual Conf. of the IEEE Industrial Electronics Society, Vienna, 2013, pp. 1893194.
    3. 3)
      • 6. Maislinger, F., Ertl, H., Stojcic, G., et al: ‘Control loop design for closed-loop class-d amplifiers with 4th order output filter’. Int. Exhibition and Conf. Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2017, Nuremberg, Germany, May 2017.
    4. 4)
      • 8. Parker, S., McGrath, B., Holmes, D.: ‘Regions of active damping control for LCL filters’, IEEE Trans. Ind. Appl., 2014, 50, pp. 424432.
    5. 5)
      • 1. Lidow, A., Strydom, J., de Rooij, M., et al: ‘GaN transistors for efficient power conversion’ (John Wiley & Sons, El Segundo, CA, 2015, 2nd edn.).
    6. 6)
      • 7. Boillat, D., Friedli, T., Mühlethaler, J., et al: ‘Analysis of the design space of single-stage and two-stage LC output filters of switched-mode AC power sources’. Proc. IEEE Power and Energy Conf. (PECI), Illinois, USA, 24–25 February 2012.
    7. 7)
      • 4. Cortes, P., Boillat, D.O., Ertl, H., et al: ‘Comparative evaluation of multi-loop control schemes for a high-bandwidth AC power source with a two-stage LC output filter’. Proc. Int. Conf. Renewable Energy Research and Applications (ICRERA 2012), Nagasaki, Japan, 11–14 November 2012.
    8. 8)
      • 5. Stubenrauch, F., Seliger, N., Schitt-Landsiedel, D.: ‘Design and performance of a 200 kHz GaN motor inverter with sine wave filter’. Int. Exhibition and Conf. Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2017, Nuremberg, Germany, May 2017.
    9. 9)
      • 2. Shirabe, K., Swamy, M., Kang, J.K., et al: ‘Advantages of high frequency PWM in AC motor drive applications’. Energy Conversion Congress and Exposition (ECCE 2012), Raleigh, North Carolina, USA, September 2012.
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