The impact of different stator and rotor slot number combinations on iron losses of a three-phase induction motor at no-load

Marčič, T.; Štumberger, B.; Štumberger, Gorazd; Hadžiselimović, Miralem; Zagradisnik, I.

doi:10.1016/j.jmmm.2008.04.059

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…Presented results show that the electromechanical characteristics of three phase induction motors, evaluated by values of no-load iron losses, shapes of torque-slip curves, shapes of torque per unit current versus slip curves and values of rated load efficiencies, are highly dependant on the used stator and rotor slot combination. Conclusions and observations from this paper and from [6] can assist induction motor designers in the improvement of induction motor efficiency.…”

Section: Introductionmentioning

confidence: 80%

“…The smaller the variation of the magnetic flux density (which is a consequence of the different slot combinations [6]), the smaller should be the motor's losses at no-load and load conditions. This above all includes iron losses [6] and additional losses [34][35][36][37][38], which are difficult to distinguish.…”

Section: Iron Losses At No-loadmentioning

confidence: 99%

“…This above all includes iron losses [6] and additional losses [34][35][36][37][38], which are difficult to distinguish. Thus, the analysis of peak values and distortions of magnetic flux density vectors should provide an initial indication which stator and rotor slot combination is suitable for a specific motor [6]. No-load tests were conducted on the experimental motors in order to determine their no-load iron losses.…”

Section: Iron Losses At No-loadmentioning

confidence: 99%

“…A previous study of the authors [6] indicates also that motors with higher number of slots may be more susceptible to effects of lamination punching [34,35] and inter-bar currents [36][37][38]. Namely, the punching of e.g.…”

Section: Iron Losses At No-loadmentioning

confidence: 99%

“…However, the aforementioned measures increase the motor per unit cost and might not be acceptable for manufacture of mid-size motors (few 10 kW). Therefore, this paper follows the work presented in [6] and focuses on the performance comparison of mid-size induction motors with different stator and rotor slot number combinations. The causes of differences in electromechanical characteristics of induction motors with different stator and rotor slot combinations are described.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of electromechanical characteristics of three phase induction motors with different pole and slot number combinations

Marčič

Štumberger

et al. 2009

JAE

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The comparison of electromechanical characteristics of a 4-pole and a 6-pole induction motor with 36 stator slots in combination with 28, 33, 34, 44 and 46 rotor slots is presented. A comparative analysis is performed by evaluating: the iron losses at no-load, the shapes of torque-slip curves, the shapes of torque per unit current vs. slip curves, and the efficiencies and over-temperatures in thermal equilibrium at rated load. The paper evidently shows that motors which exhibited low values of iron losses at no-load also exhibited superior line-starting performance, high values of torque per unit stator current and superior efficiency at rated load. Moreover, the paper shows the feasibility of using the same stator and rotor slot combination for a mid-size 4-pole and 6-pole induction motor.

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Section: Introductionmentioning

confidence: 80%