Now showing items 1-3 of 3

    • Terens, Lucien; Grgic, Andrej (Texas A&M University. Turbomachinery Laboratories, 1996)
      Today, the variable speed drive with AC motor and static frequency converter is an outstanding solution to control the speed of turbomachines in the power range up to 100 MW and more. A wide selection of variable speed ...
    • Frei, Arno; Grgic, Andrej; Heil, Werner; Luzi, Armin (Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1986)
      With converter-fed variable speed electric motors, pulsating torques inevitably occur in the air gap and can cause torsional oscillation in the whole shaft line. The origin and behavior of these torques and how to calculate ...
    • Grgic, Andrej; Heil, Werner; Prenner, Herbert (Texas A&M University. Turbomachinery Laboratories, 1992)
      Converter-fed adjustable speed electric motors are now finding increasing use for driving turbomachinery in the power range from 1.0 to 20 (50) MW. The most important properties of these drives are explained, with the main ...