Steady‐state operation of the brushless cascaded doubly fed machine: a survey

• Faïcal Jallali ^[1] ; Afef Bouchhima ^[1] ; Ahmed Masmoudi ^[1]
  1. [1] University of Sfax

     University of Sfax

     Túnez

     
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 30, Nº 1 (Special Issue: Selected papers from EVER’09), 2011, págs. 222-245
• Idioma: inglés
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• Resumen

  • Purpose – The purpose of this paper is to investigate the steady‐state stability and features of the brushless cascaded doubly fed machine (BCDFM), which is made up of two wound‐rotor induction machines: the power machine (PM) and the control one, with their rotors mechanically and electrically coupled.

    Design/methodology/approach – The machine modelling is first treated considering a Park reference frame linked to the rotating field of the PM. Then, a state representation related to small perturbations is established following the linearisation of the BCDFM model around a steady‐state operating point. This allows the investigation of BCDFM steady‐state stability, power flow and the torque‐speed characteristics.

    Findings – It has been found that the electrical variables of the control machine greatly affect the BCDFM steady‐state stability and characteristics.

    Research limitations/implications – The work should be extended considering a validation of the established results through experimental tests.

    Originality/value – The steady‐state small perturbation of the BCDFM model has been introduced for the first time, which is the key of the machine steady‐stability analysis and features investigation.