@article {10.3844/ajassp.2011.393.399,
article_type = {journal},
title = {On the Influence of Stator Slot shape on the Energy Conservation Associated with the Submersible Induction Motors},
author = {Sundaram, M. and Navaneethan, P.},
volume = {8},
year = {2011},
month = {Apr},
pages = {393-399},
doi = {10.3844/ajassp.2011.393.399},
url = {https://thescipub.com/abstract/ajassp.2011.393.399},
abstract = {Problem statement: A good design of Submersible Induction Motor is required to maintain
maximum efficiency level. This can be achieved in one way by optimum design of magnetic circuit.
The magnetic circuit of an Induction Motor is formed by the combination of Stator core, Rotor core
and air gap. In applications like Submersible Motor Pumps, the air gap cannot be minimized beyond
0.5 mm, because of the machining tolerance required, due to large core length. Now a day, the
efficiency of such motor is improved by die-cast copper rotor. But the cost of such motor is more and
sometimes the rotor core properties are getting changed due to high temperature during die- casting
process. Approach: A new stator slot shape is proposed based on the results obtained from the
iterations with Rotational Machine Expert (RMxprt) software and the performance is compared with
that of the existing stator slot shape, for a 3-phase, 5 hp, 380 V, 2-pole motor The motor with both the
stator slot shapes have been analyzed with the Rotational Machine Expert (RMxprt) software. Results:
The magnetizing current of new design is 3.25 A, compared to the existing design of 4.67 A. The
overall efficiency of the Submersible Induction Motor pump set is 5% more than that of the existing
one. The discharge of the pump set has increased by about 80 liters per minute. Conclusion: The
proposed stator slot dimension is suitable for more efficiency, less magnetizing current and a good
power factor. This design modification does not require much cost and needs no complex
manufacturing process.},
journal = {American Journal of Applied Sciences},
publisher = {Science Publications}
}