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Why 3 phase as motor are more efficient than single phase as motor

2011-1-11

With the development of technology achievements in the industrial field ,which means that many companies have to spend more money on technology rather than on the labor again. A company will choose what kind of products to increase the company's effectiveness? They usually choose low-cost, efficient, environmentally friendly and easy to use product. For some industrial companies, why not the three-phase induction motor is a good choice?

Why 3 phase as motors are more efficient than single phase motors? because compared with single-phase asynchronous motor, three-phase asynchronous motor running performance, and save a variety of materials. the most importangt reason is it is cheap.Rotor structure according to the different three-phase cage induction motor and the winding can be divided into two kinds. Cage rotor induction motor structure is simple, reliable, light weight, cheap, widely used.But Its main disadvantage is speed problems.