Comparative analysis of the effects of voltage unbalance on the performance of IE 4 electric motors

P. D. DONOLO; C. M. PEZZANI; E. QUISPE; C. H. DE ANGELO; G. R. BOSSIO

Roma

Congreso; Energy Efficiency in Motor Driven Systems (EEMODS'17); 2017

University of L'Aquila

In this paper, we study the behavior of line start permanent magnet synchronous motors (LSPMSM) and squirrel cage induction motors (IM) under different voltage unbalance levels and different load conditions. To this end, we carried out different tests on a 5.5 kW, 4 pole, 1500 rpm, IE4 efficiency LSPMSM and on a 5.5 kW, 4 pole, 1475 rpm, IE4 efficiency IM. We analyzed the behavior of currents and losses on the electric motors under different levels of unbalance. In addition, we present results about the effects of voltage unbalance on the power oscillations, estimated electromagnetic torque and mechanical vibrations.