Cost of three phase and single phase induction motor

AI Thread Summary
Three-phase induction motors are generally more cost-effective than single-phase induction motors for the same power rating, RPM, and input specifications. Although single-phase motors can be "faked," they typically involve more components, leading to higher manufacturing costs. The sales volume of single-phase motors may offset some of these costs, but they still tend to be pricier overall. The complexity of single-phase motors contributes to their higher price point. Ultimately, three-phase induction motors are usually the more economical choice.
srinaath
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hi guys...
which will be costlier-single phase induction machine or three phase induction machine for same power rating, same rpm speed, same input voltage and current.?
 
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srinaath said:
hi guys...
which will be costlier-single phase induction machine or three phase induction machine for same power rating, same rpm speed, same input voltage and current.?
Strictly speaking, there is no such thing as a single phase induction motor, but you can "fake" it (see http://www.allaboutcircuits.com/textbook/alternating-current/chpt-13/single-phase-induction-motors/). Since it involves more components, it should be more expensive, but sales volume might tend to equalize the costs.
 
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