If you are wondering about the difference between 3 phase vs single phase AC motors, just remember this. Single phase AC motors usually operate on a single phase source of power while 3 phase AC motors operate on a three phase source of power. The single phase alternating current is the most common source of power used by most households and non industrial businesses. It is the power that is used to light homes and power TVs in North America. Today, most commercial buildings in the US use the 3 phase alternating current motors because of its flexibility an power density. The 3 phase AC motor is particularly common in large businesses including in the manufacturing and industrial businesses.
Data centers today have become power intensive, so that they can be able to offer storage and computing capabilities. This has led to the growth in demand of power supply to meet the needs of these data centers. The single phase alternating current power motor can no longer meet the power needs of these data centers since it requires expensive rewiring. Three phase alternating current power motor is economical to supply power to data center since it requires less conductor material to supply electricity. This explains why 3 phase alternating current motor is used in electric transmission, generation and distribution in most countries worldwide. The single phase alternating current motor is less reliable and more expensive to be used in a national electricity grid compared to 3 phase alternating current motor.
Both 3 phase and single phase ac motors consist of two parts, namely the rotor and stator. The stator is the part of the motor, which is stationary while the rotor is simply the rotating part of the motor.