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Quantitative assessment of three phase supply voltage unbalance effects on induction motors

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Abstract

In this work, the performance of the induction motor under unbalanced three phase supply voltage conditions is assessed. This study compares the effects of scalar and complex modeling of voltage unbalance on the induction motor performance parameters such as torque, current, losses, efficiency and power factor. Different scenarios of unbalanced phase voltage magnitudes and angles are considered. It is found that the variation of the phase angles creates an unbalance and has an important effect on the induction motor performances which seems to be underestimated in the works reported in literature.

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Abbreviations

LVUR :

Line voltage unbalance ratio

PVUR :

Phase voltage unbalance ratio

VUF :

Voltage unbalance factor

CVUF :

Complex voltage unbalance factor

ω s :

Synchronous speed

f :

Frequency

ω r :

Rotor shaft speed

V s :

Stator voltage space vector

V p :

Positive sequence voltage

V n :

Negative sequence voltage

s p :

Positive sequence slip

s n :

Negative sequence slip

V sp :

Stator positive sequence voltage

V sn :

Stator negative sequence voltage

I sp :

Positive sequence current

V sn :

Negative sequence current

P sl :

Stator copper loss

V rl :

Rotor copper loss

P out :

Mechanical output power

S in :

Input apparent power

P in :

Input active power

Q in :

Input reactive power

η:

Efficiency

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Authors and Affiliations

  1. Laboratory Signals and Systems, Institute of Electrical and Electronic Engineering, University M’hamed Bougara of Boumerdes, Boumerdes, Algeria

    Fatma Zohra Dekhandji, Larbi Refoufi & Hamid Bentarzi

Authors
  1. Fatma Zohra Dekhandji
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  2. Larbi Refoufi
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  3. Hamid Bentarzi
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Correspondence to Fatma Zohra Dekhandji.

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Dekhandji, F.Z., Refoufi, L. & Bentarzi, H. Quantitative assessment of three phase supply voltage unbalance effects on induction motors. Int J Syst Assur Eng Manag 8 (Suppl 1), 393–406 (2017). https://doi.org/10.1007/s13198-015-0401-3

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  • DOI: https://doi.org/10.1007/s13198-015-0401-3

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