CN102684431A

CN102684431A - Ultra power efficient 3,000w bipolar three-phase asynchronous motor

Info

Publication number: CN102684431A
Application number: CN 201210188132
Authority: CN
Inventors: 吕三元
Original assignee: CHONGQING LEERJIA MACHINERY Co Ltd
Current assignee: CHONGQING LEERJIA MACHINERY Co Ltd
Priority date: 2012-06-08
Filing date: 2012-06-08
Publication date: 2012-09-19

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

Ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor

Technical field

The present invention relates to a kind of motor, particularly a kind of ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor.

Background technology

Motor has had nearly two one-hundred-year histories so far from coming out; Threephase asynchronous also has more than 100 year history; Be widely used in all trades and professions such as each worker, farming, woods, animal husbandry at present, and various fields in life, the essential equipment in commercial production and the people's lives become; But also become the maximum electric equipment of power consumption in production and the life simultaneously, so how to make the energy saving motor environmental protection just become people's important topic in front.China is Asia first power consumption state; Also be the present in the world the most serious developing country of short of electricity, from the annual energy output and the power consumption Jun Ju second place of the world of China in 1992, the energy shortage of China is because of energy waste mostly and utilizes improper institute to cause; China's industrial energy consumption accounts for 70% of total energy consumption at present; Wherein energy consumption of electrical machinery accounts for 60% ~ 70% of industrial total energy consumption, and therefore, the raising of motor energy efficiency level is for China's energy conservation, environmental protection and promote economic development significant; According to investigation, China IE1 (international motor efficiency classification standard)The motor use amount of grade still accounts for more than 90% of total use amount, and the above high-efficiency energy-saving motor usage ratio of IE2 only accounts for 8% of total use amount, can reach the use phoenix feathers and unicorn horns especially of the ultra high efficiency energy-saving motor of IE3 grade; This situation has produced great waste to entire society's resource, is the serious resistance of development low-carbon economy, so the research and development high-efficiency electric motor is one of important measures that improve energy utilization rate, meets the needs of China and development of world economy.

At present general on the China market is Y2 series threephase asynchronous; This motor comprises stator and rotor two large divisions; Its stator core is to be overrided to form by the stator punching that silicon steel sheet is made, and some grooves are arranged in the punching, inlays stator winding in the groove; Be set with the rotor magnetic pole that the rotor punching made with silicon steel sheet is overrided to form in the rotating shaft of rotor, have the rotor winding to form a closed-loop path on the rotor magnetic pole; After stator fed electric current, the magnetic line of force of generation was through rotor, and produced induced current therein, and the electric current in the short-circuited conducting sleeve hinders the variation of magnetic flux, and the magnetic flux that causes short-circuited conducting sleeve part and short-circuited conducting sleeve not partly to produce has had phase difference, thereby forms rotating magnetic field; After energising starts, the rotor winding because of and magnetic field between exist relative motion induced electromotive force and electric current, there are relative rotation speed in rotating magnetic field and rotor, and produce electromagnetic torque with magnetic field interaction, rotor are rotated, the conversion of realization electric energy and mechanical energy; Under the full load working condition, the efficient of motor is generally higher, usually about 80%; Yet; In case load descends, efficiency of motor just significantly descends thereupon, because be by maximum possible load and the required power of the worst operating mode and fixed during motor selection; Most motors in the load factor of most of running time all 50%～60%, so the efficient during actual motion is all lower.

3000 watt of 2 pole three phase asynchronous motor overwhelming majority using in the market is the IE1 grade; Its energy conversion efficiency is 81.5%; A small amount of IE2 grade is also arranged, and its energy conversion efficiency has risen to 84.6%, but its energy-saving effect still can't satisfy the needs of current development low-carbon economy.

Summary of the invention

Technical problem to be solved by this invention provides the method that a kind of stator to 3000 watt of 2 pole three phase asynchronous motor, rotor and iron core, flute profile and size are optimized design; Through its running wastage of comprehensive reduction; Reach and guaranteeing that power output is under 3000 watts the prerequisite, reduces the input power purpose to a greater extent.

For solving the problems of the technologies described above, the technical scheme that the present invention adopted is a kind of ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor, comprises stator and rotor, and stator comprises stator core, stator punching groove and stator cramp groove; Rotor comprises rotor core and rotor punching groove, it is characterized in that described diameter of stator bore is 8.7cm, and the length of stator core is 13.0cm, and the flute profile of described stator punching groove is a dovetail groove; Wherein width of rebate is 2.50mm, and the notch height is 0.80mm, and groove top is 15.50mm deeply; Groove shoulder breadth degree is 5.50mm, and groove shoulder height degree is 0.98mm, and the bottom land width is 6.80mm; Described stator cramp groove center line passes in the middle of two grooves of stator punching groove, and described rotor diameter is 8.64cm, and the rotor internal diameter is 3.0cm; The length of rotor core is 13.0cm, and the flute profile of described rotor punching groove is the totally-enclosed groove of dome round bottom, and wherein the notch height is 0.7mm; Groove top radius is 2.4mm, and groove top is 7.0mm deeply, and bottom radius is 2.40mm.

The invention has the beneficial effects as follows because the flute profile and the size of internal diameter, external diameter, core length and the rotor punching groove of the flute profile of internal diameter, core length and the stator punching groove of stator and size and rotor have been carried out the optimization appropriate design; Make the stator winding loss have only 149.6w; The rotor winding loss has only 107.4w, and core loss has only 27.5w, and the loss of existing 3000 watt of 2 pole three phase asynchronous motor stator winding has 249.8w; The rotor winding loss has 146.4w, and core loss has 82.5w; Be all in power output under 3000 watts the prerequisite, the input power that existing like product needs is 3.611kw, and energy conversion efficiency is 83.1%, and input power required for the present invention is merely 3.417kw, and energy conversion efficiency is 87.8%, has practiced thrift the energy greatly; Simultaneously,, weakened the radial electromagnetic force ripple in the air gap, reduced electric and magnetic oscillation, reduced electromagnetic noise because stator cramp groove center line is designed in the middle of two grooves of stator punching groove, pass.

Description of drawings

Fig. 1 is the sectional structure sketch map of ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor of the present invention.

Fig. 2 is a stator laminating structure sketch map of the present invention.

Fig. 3 is a stator punching groove structural representation of the present invention.

Fig. 4 is a rotor punching structural representation of the present invention.

Fig. 5 is a rotor punching groove structural representation of the present invention.

Among the figure: 1. stator, 2. rotor, 3. stator cramp groove, 4. stator core, 5. rotor core, 6. stator punching groove; 7. rotor punching groove, 8. diameter of stator bore, 9. stator cramp groove center line, 10. rotor diameter, 11. rotor internal diameters; 61. the bottom land width, 62. groove tops are dark, 63. groove shoulder height degree, 64. groove shoulder breadth degree, 65. width of rebate; 66. the notch height, 71. notch height, 72. groove top radiuses, 73. bottom radius, 74. groove tops are dark.

Embodiment

Below in conjunction with embodiment the present invention is described further.

As shown in Figure 1, the present invention includes stator 1 and 2 two major parts of rotor, stock, structure and manufacture method are identical with common 3000 watt of 2 pole three phase asynchronous motor; Different places is that diameter of stator bore 8 is made 8.7cm, and the flute profile of stator punching groove 6 is made dovetail groove, and wherein width of rebate 65 is made 2.50mm; Notch height 66 is made 0.80mm, and 15.50mm is made on groove top dark 62, and groove shoulder breadth degree 64 is made 5.50mm; Groove shoulder height degree 63 is made 0.98mm, and bottom land width 61 is made 6.80mm, and stator cramp groove center line 9 is passed in the middle of two grooves of stator punching groove 6; Be assembled into stator core 4 then, the length of stator core 4 is made 13.0cm; Again rotor diameter 10 is made 8.64cm; Rotor internal diameter 11 is made 3.0cm, the flute profile of rotor punching groove 7 is made the totally-enclosed groove of dome round bottom, wherein notch height 71 is made 0.7mm; Groove top radius 72 is made 2.4mm; 7.0mm is made on groove top dark 74, and bottom radius 71 is made 2.40mm, then the length of rotor core 5 is made 13.0cm; Other part is made 3000 watt of 2 pole three phase asynchronous motor according to commonsense method, promptly accomplishes the making of ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor.

Through check, the present invention compares with existing general 3000 watt of 2 pole three phase asynchronous motor of Y2-100L type, draws contrast difference such as following table.

The structure and the performance difference comparison sheet of the present invention and traditional 3000 watt of 2 pole three phase asynchronous motor.

Figure 2012101881322100002DEST_PATH_IMAGE003

From showing and can find out, the present invention compares with existing general 3000 watt of 2 pole three phase asynchronous motor of Y2-100L type, and energy conversion efficiency has brought up to 87.8% from 83.1%, and needed input power has dropped to 3.417kw from 3.611kw, and energy-conservation 5.68%; Rotating speed has been increased to 2900r/min from 2868r/min.

The present invention compares the efficiency standard requirement 87.1% of 3000 watt of 2 pole three phase asynchronous motor with the highest ranking IE3 of international motor efficiency classification standard, and energy conversion efficiency has improved 0.7%.

Claims

1. ultra energy-conservation 3000 watt of 2 pole three phase asynchronous motor; Comprise stator (1) and rotor (2); Stator (1) comprises stator core (4), stator punching groove (6) and stator cramp groove (3), and rotor (2) comprises rotor core (5) and rotor punching groove (7), it is characterized in that:

Described diameter of stator bore (8) is 8.7cm, and the length of stator core (4) is 13.0cm;

The flute profile of described stator punching groove (6) is a dovetail groove; Wherein width of rebate (65) is 2.50mm; Notch height (66) is 0.80mm, and groove top dark (62) are 15.50mm, and groove shoulder breadth degree (64) is 5.50mm; Groove shoulder height degree (63) is 0.98mm, and bottom land width (61) is 6.80mm;

Described stator cramp groove center line (9) passes in the middle of two grooves of stator punching groove (6);

Described rotor diameter (10) is 8.64cm, and rotor internal diameter (11) is 3.0cm, and the length of rotor core (5) is 13.0cm;

The flute profile of described rotor punching groove (7) is the totally-enclosed groove of dome round bottom, and wherein notch height (71) is 0.7mm, and groove top radius (72) is 2.4mm, and groove top dark (74) are 7.0mm, and bottom radius (73) is 2.40mm.