EM-4. Comparison of technologies

Design drive train for a pump (head 50 m, flow 50 l/s, efficiency 82%, speed 1450 rpm).

Operational mode of the pump:

  • operation at 25% load 70% of time and at rated load - 30% of time

Try SCIM (IE2), SyRM, PMSM as the motor type. Calculate Life Cycle Cost (LCC) for each motor variant. Compare the variants on spider diagram. Consider strong and weak sides of the technologies.

  • Energy price - 0,2 Euro/kWh
  • Operational time – 8000 hours/year
  • Service life – 10 years

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