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A survey of shaft voltage reduction strategies for induction generators in wind energy applications

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  • Adabi, M. Ebrahim
  • Vahedi, Abolfazl

Abstract

Common mode voltage generated by PWM inverters and the parasitic couplings of the machine structure in high frequencies create a model for the system which leads to an induced voltage on the shaft. Shaft voltage became a dominant side effect of power electronic converters since they are widely used in wind turbine applications to prepare desirable frequency and suitable control on active and reactive power. This voltage is known as the main cause of many unwanted problems such as leakage current, ball-bearings damages and reduction of generator's life time. In this paper, pulse width modulation strategies have been presented for two-level and three-level back-to-back AC–DC–AC converters in order to reduce or eliminate common mode voltage of these converters for reduction or elimination of shaft voltage in squirrel cage and doubly fed induction generators. Applying these techniques lead to complete elimination of shaft voltage for squirrel cage Induction generator with back to back AC/DC/AC converter and a 66 percent reduction of the shaft voltage generation in the Doubly Fed Induction Generator. Simulation results and mathematical analysis have been presented to investigate proposed techniques.

Suggested Citation

  • Adabi, M. Ebrahim & Vahedi, Abolfazl, 2013. "A survey of shaft voltage reduction strategies for induction generators in wind energy applications," Renewable Energy, Elsevier, vol. 50(C), pages 177-187.
    • Handle: RePEc:eee:renene:v:50:y:2013:i:c:p:177-187
    DOI: 10.1016/j.renene.2012.06.026
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    Citations

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    Cited by:

    1. Atallah, Ahmed M. & El Tantawy, El Sayed F., 2015. "Direct torque control of machine side multilevel converter for variable speed wind turbines," Energy, Elsevier, vol. 90(P1), pages 1091-1099.
    2. Amr. S. Zalhaf & Mazen Abdel-Salam & Mahmoud Ahmed, 2019. "An Active Common-Mode Voltage Canceler for PWM Converters in Wind-Turbine Doubly-Fed Induction Generators," Energies, MDPI, vol. 12(4), pages 1-12, February.
    3. Ruifang Liu & Xin Ma & Xuejiao Ren & Junci Cao & Shuangxia Niu, 2018. "Comparative Analysis of Bearing Current in Wind Turbine Generators," Energies, MDPI, vol. 11(5), pages 1-13, May.
    4. Mahela, Om Prakash & Shaik, Abdul Gafoor, 2016. "Comprehensive overview of grid interfaced wind energy generation systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 260-281.
    5. Cardoso, J.G. & Casella, I.R.S. & Filho, A.J. Sguarezi & Costa, F.F. & Capovilla, C.E., 2016. "SCIG wind turbine wireless controlled using morphological filtering for power quality enhancement," Renewable Energy, Elsevier, vol. 92(C), pages 303-311.

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