Ultra power efficient 3,000w bipolar three-phase asynchronous motor

Abstract

The invention discloses an ultra power efficient 3,000w bipolar three-phase asynchronous motor, which comprises a stator and a rotor. The internal diameter and core length of the stator, the slot shapes and dimensions of stator lamination slots, and the internal diameter, external diameter and core length of the rotor, and the slot shapes and dimensions of rotor lamination slots are optimized and rationally designed, so that stator winding loss is only 149.5w, rotor winding loss is only 107.4w, and core loss is only 27.5w; on the premise of the same output power of 3,000w, the conventional like product has a requirement for the input power of 3.611kw, and has energy conversion efficiency of 83.1 percent, while the ultra power efficient 3,000w bipolar three-phase asynchronous motor has the requirement for the input power of only 3.417kw, and has the energy conversion efficiency of 87.8 percent, so that energy is greatly saved, and the energy conversion efficiency is improved; and in addition, the centerline of each stator buckle slab slot is designed to penetrate through a part between two of the stator lamination slots, so that radial electromagnetic waves in air gaps are weakened, electromagnetic vibration is reduced, and electromagnetic noise is lowered.

Description

technical field [0001] The invention relates to a motor, in particular to a super-energy-saving 3000-watt 2-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] At present, most of the 3000 watt 2-pole three-phase asynchronous motors used in the market are of IE1 level, and their energy conversion efficiency is 81.5%. Meet the current needs of developing a low-carbon economy

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