Selaus tekijän mukaan kokoelmassa "Aarniovuori, Lassi"Tieteelliset julkaisut

    • Advanced Uncertainty Calculation Method for Converter-Fed Motor Loss Determining 

      Kärkkäinen, Hannu; Aarniovuori, Lassi; Niemelä, Markku; Pyrhönen, Juha (IEEE, 05.08.2019)
      There is only a single practical method to determine the losses of converted-fed electrical machines. The method is based on mechanical output and electrical input power measurements. When this method is used, the loss ...
    • Analytical Evaluation of High-Efficiency Induction Motor Losses 

      Aarniovuori, Lassi; Lindh, Pia; Kärkkäinen, Hannu; Niemelä, Markku; Pyrhönen, Juha; Cao, Wenping (IEEE, 05.08.2019)
      An analytical motor design-based approach is used to evaluate the major loss components of a premium-efficiency (IE3)four-pole squirrel-cage induction machine. In the analytical approach, the geometry of the machine and ...
    • Experimental Investigation of a 75 kW Induction Motor Drive System Losses and Efficiency 

      Aarniovuori, Lassi; Kärkkäinen, Hannu; Niemelä, Markku; Cai, Kewei; Pyrhönen, Juha; Cao, Wenping (IEEE, 09.12.2019)
      The frequency converter driven IM can be used as a reference for the efficiency level of a drive system. In here, the losses and efficiency of a 75 kW IE3 -rated modern squirrel-cage induction motor are investigated ...
    • Measurement Accuracy Requirements for the Efficiency Classification of Converters and Motors 

      Aarniovuori, Lassi; Kärkkäinen, Hannu; Niemelä, Markku; Pyrhönen, Juha (IEEE, 28.11.2019)
      Electrical machines play a major role in the electrical energy consumption in the modern world; therefore, the efficiency of electrical machines has been regulated for a long time by different authorities. Recently, the ...
    • The Instrumentation Influence on the Motor Loss Determination Uncertainty 

      Kärkkäinen, Hannu; Aarniovuori, Lassi; Niemelä, Markku; Pyrhönen, Juha (IEEE, 09.12.2019)
      The input-output method is the most frequently used and, in practice, the only viable alternative to determine the losses of all electrical machines regardless of the supply type or motor technology. However, the losses ...