Ultra-energy-saving 5500W six-pole three-phase asynchronous electric motor

Abstract

The invention relates to an ultra-energy-saving 5500wW six-pole three-phase asynchronous electric motor, which comprises a stator and a rotor. The inner diameter of the stator, the length of an iron core, the groove shape and the dimension of a stator punching sheet groove, the inner diameter and the outer diameter of the rotor, the length of the iron core and the groove shape and the dimension of a rotor punching sheet groove are optimized and reasonably designed, the consumption of a stator winding is only 277.4W, the consumption of a rotor winding is only 173.4W, and the consumption of the iron core is only 34.2W. On the premise that the output power is 5500W, the input power required by the existing similar products is 34.2kW, the energy conversion efficiency is 86.3 percent, while the input power required by the ultra-energy-saving 5500W six-pole three-phase asynchronous electric motor is only 6.087kW, the energy conversion efficiency is 90.4 percent, so the energy sources are greatly saved, the rotating speed is improved from 967r / min to 1164r / min, the speed acceleration is increased by 20.4 percent, meanwhile, the stator buckle sheet groove center line is designed to penetrate through a position between the two grooves of the stator punching sheet groove, the radial electromagnetic force waves in the air gap are weakened, the electromagnetic vibration is reduced, and the electromagnetic noise is reduced.

Description

technical field [0001] The invention relates to a motor, in particular to a super-energy-saving 5500-watt 6-pole three-phase asynchronous motor. Background technique [0002] The motor has a history of nearly 200 years since its inception, and the three-phase asynchronous motor has a history of more than 100 years. At present, it is widely used in various industries such as industry, agriculture, forestry, animal husbandry, and various fields of life. The necessary equipment in industrial production and people's life, but at the same time it has also become the electrical equipment that consumes the most energy in production and life, so how to make the motor energy-saving and environmentally friendly has become an important issue in front of people. China is the largest power consumer in Asia, and is also the developing country with the most serious power shortage in the world. Since 1992, China's annual power generation and power consumption have ranked second in the world...

AI Technical Summary

Problems solved by technology

[0003] At present, the Y2 series three-phase asynchronous motor is commonly used in the Chinese market. This motor includes two parts: the stator and the rotor. The stator core is made of stator punches made of silicon steel sheets. Stator windings are embedded in the slots, and rotor shafts are fitted with rotor poles made of laminated rotor punches made of silicon steel sheets. There are rotor windings on the rotor poles to form a closed loop; when the stator is fed with current, the generated magnetic lines of force pass through The rotor, and induce current in it, the current in the short-circuit ring hinders the change of magnetic flux, resulting in a phase difference between the magnetic flux generated by the short-circuit ring part and the non-short-circuit ring part, thus forming a rotating magnetic field; There is relative motion between the magnetic field and the induced electromotive force and current, and the rotating magnetic field and the rotor have a relative speed, and interact with the magnetic field to generate electromagnetic torque, which makes the rotor rotate and realizes the conversion of electrical energy and mechanical energy; under full load conditions Under normal circumstances, the efficiency of the motor is generally high, usually around 80%; however, once the load drops, the efficiency of the motor will drop significantly, because the selection of the motor is based on the power required by the maximum possible load and the worst working condition. Certainly, the load rate of most motors is 50% to 60% in most of the running time, so the efficiency in actual operation is relatively low

[0004] Most of the 5,500-watt 6-pole three-phase asynchronous motors currently on the market are IE1 grades, with an energy conversion efficiency of 83.1%, and a small amount of IE2 grades, whose energy conversion efficiency has risen to 86.0%, but their energy-saving effect is still not enough. Meet the current needs of developing a low-carbon economy

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