If you are wondering about the difference between 3 phase vs single stage AC motors, just remember this. Single phase AC motors usually are powered by a single phase way to obtain power while 3 phase AC motors operate on a three phase way to obtain power. The single stage alternating current is the most typical source of power utilized by the majority of households and non commercial businesses. It is the power that can be used to light homes and power TVs in North America. Today, most commercial structures in the US use the 3 phase alternating current motors because of its versatility an power density. The 3 phase AC motor is specially common in large businesses 
which includes in the production and industrial businesses.
Data centers today have grown to be power intensive, to ensure that they can be able to offer storage space and computing capabilities. It has resulted in the growth popular of power supply to meet the needs of these data centers. The one phase alternating electric current power motor can no longer meet up with the power needs of the data centers since it requires costly rewiring. Three stage alternating current power engine is economical to supply power to data center because it requires less conductor material to supply electricity. This explains why 3 stage alternating current motor is used in electric transmission, generation and distribution generally in most countries worldwide. The single phase alternating current motor is much less reliable and more expensive to be utilized in a national electrical power grid in comparison to 3 phase alternating current motor.
Both 3 phase and one phase ac motors contain two parts, namely the rotor and stator. The stator is the part of the engine, which is stationary as the rotor is merely the rotating section of the motor.