CN102751830A

CN102751830A - Ultra-high-efficiency 3000-watt dipolar three-phase asynchronous motor

Info

Publication number: CN102751830A
Application number: CN2012102517954A
Authority: CN
Inventors: 吕三元
Original assignee: CHONGQING LEERJIA MACHINERY Co Ltd
Current assignee: CHONGQING LEERJIA MACHINERY Co Ltd
Priority date: 2012-07-20
Filing date: 2012-07-20
Publication date: 2012-10-24

Abstract

An ultra-high-efficiency 3000-watt dipolar three-phase asynchronous motor comprises a stator and a rotor. The external diameter and the internal diameter of each of the stator and the rotor, the core length and the number, the shape and the size of punching sheet slots are optimized and reasonably designed to enable loss of a stator winding, a rotor winding and a core to be greatly reduced, and with the 3000-watt output power, compared with the existing like products, the ultra-high-efficiency 3000-watt dipolar three-phase asynchronous motor has the advantages that rotational speed is increased from 2868r/min to 2920r/min; total electric energy loss is decreased from 619.2w to 384.1w, and energy is saved by 37.97%; energy conversion efficiency is greatly increased from 82.9% to 88.7%, is increased by 5.8% and is 1.6% higher than the highest international grade standard of 87.1%; and since a central line of a stator cramp slot is designed to penetrate through the middles of two of the stator punching sheet slots, radial electromagnetic force waves in air gaps are weakened, electromagnetic vibration is reduced, and electromagnetic noise is reduced.

Description

3000 watt of 2 pole three phase asynchronous motor of ultra high efficiency

Technical field

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

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 made from silicon steel sheet that is overrided to form by rotor punching in the rotating shaft of rotor, the closed-loop path that has the rotor winding to form 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 carried out efficient design; Through comprehensive reduction stator winding, rotor winding and running wastage unshakable in one's determination, reach the purpose that produces 3000 watts power output with input power still less.

For solving the problems of the technologies described above, the technical scheme that the present invention adopted is 3000 watt of 2 pole three phase asynchronous motor of a kind of ultra high efficiency, 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 stator outer diameter is 18.00cm, and diameter of stator bore is 9.70cm, and the length of stator core is 12.00cm; The quantity of described stator punching groove is 24 and evenly distributes in the form of a ring that the flute profile of stator punching groove is tiltedly to take on round bottomed vessel, and wherein bottom radius is 5.30mm; Groove top is 11.70mm deeply, and groove shoulder height degree is 0.878mm, and groove shoulder breadth degree is 7.825mm; Width of rebate is 3.00mm, and the notch height is 0.80mm, and described stator cramp groove center line passes in the middle of two grooves of stator punching groove; Described rotor diameter is 9.63cm, and the rotor internal diameter is 3.20cm, and the length of rotor core is 12.00cm; The quantity of described rotor punching groove is 20 and evenly distributes in the form of a ring that the flute profile of rotor punching groove is the two cage grooves of dome round bottom, and wherein the notch height is 0.60mm; Last groove radius is 2.50mm, and following slot opening is 1.00mm, and following notch height is 1.50mm; Following groove top radius is 2.60mm, and following slot part is 7.00mm deeply, and following bottom radius is 1.50mm.

The invention has the beneficial effects as follows that because quantity, flute profile and the size of external diameter, internal diameter, core length and the punching groove of stator and rotor have been carried out the optimization appropriate design make the stator winding loss have only 99.4W, the rotor winding loss has only 85.8W; Core loss has only 23.1W, comprises stray loss 75.0W, mechanical loss 100.7W; Its power total losses amount is 384.1W, and the loss of existing 3000 watt of 2 pole three phase asynchronous motor stator winding has 259.1W, and the rotor winding loss has 146.0W; Core loss has 82.1W; Comprise stray loss 75.0W, mechanical loss 57.1W, its power total losses amount is 619.2W; The amount of power dissipation of wanting required for the present invention has reduced 37.97%, has practiced thrift the energy greatly; Under the same conditions; Existing like product needs the input power of 3.619kW could produce 3000 watts power output; Energy conversion efficiency is 82.9%, and the present invention only needs the input power of 3.384kW just can produce 3000 watts power output, and energy conversion efficiency has reached 88.7%; Improved 5.8%; Improved energy conversion efficiency greatly, with the highest ranking IE3 of international motor efficiency classification standard the efficiency standard requirement 87.1% of 3000 watt of 2 pole three phase asynchronous motor has been compared, energy conversion efficiency of the present invention has surpassed international highest ranking standard 1.6%; Simultaneously, the stator phase current has also dropped to 5.63A from 6.19A, and rotating speed has also been brought up to 2920r/min from 2868r/min; In addition,, 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 3000 watt of 2 pole three phase asynchronous motor of ultra high efficiency 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. the rotor internal diameter, 12. stator outer diameters, 61. bottom radius, 62. groove tops are dark, 63. groove shoulder height degree; 64. groove shoulder breadth degree, 65. width of rebate, 66. notch height, 71. notch height, groove radius on 72.; 73. following slot opening, 74. times notch height, 75. times groove top radiuses, 76. times slot part is dark, 77. times bottom radius.

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 stator outer diameter is made 18.00cm, and diameter of stator bore 8 is made 9.70cm, and the quantity of stator punching groove 6 is 24 and evenly distributes in the form of a ring; The flute profile of stator punching groove 6 is made oblique shoulder round bottomed vessel, and wherein bottom radius 61 is made 5.30mm, and 11.70mm is made on groove top dark 62; Groove shoulder height degree 63 is made 0.878mm, and groove shoulder breadth degree 64 is made 7.825mm, and width of rebate 65 is made 3.00mm; Notch height 66 is made 0.80mm; 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 12.00cm; Again rotor diameter 10 is made 9.63cm, rotor internal diameter 11 is made 3.20cm, the quantity of rotor punching groove 7 is 20 and evenly distributes in the form of a ring; The flute profile of rotor punching groove 7 is made the two cage grooves of dome round bottom, and wherein notch height 71 is made 0.60mm, and last groove radius 72 is made 2.50mm; Following slot opening 73 is made 1.00mm; Following notch high 74 is made 1.50mm, and following groove top radius 75 is made 2.60mm, and following slot part dark 76 is made 7.00mm; Following bottom radius 77 is made 1.50mm, then the length of rotor core 5 is made 12.00cm; Other part is made 3000 watt of 2 pole three phase asynchronous motor according to commonsense method, promptly accomplishes the making of 3000 watt of 2 pole three phase asynchronous motor of ultra high efficiency.

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

Figure 2012102517954100002DEST_PATH_IMAGE001

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

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 the stator phase current has dropped to 5.63A from 6.19A, has reduced by 9.05%; Rotating speed has been increased to 2920r/min from 2868r/min, has increased 52r/min; Needed input power has dropped to 3.384kW from 3.619kW, and power total losses amount has dropped to 384.1W from 619.2W, has reduced 37.97%, has practiced thrift the energy greatly.

The present invention makes the energy conversion efficiency of 3000 watt of 2 pole three phase asynchronous motor bring up to 88.7% from 82.9%; Improved 5.8%; With the highest ranking IE3 of international motor efficiency classification standard the efficiency standard requirement 87.1% of 3000 watt of 2 pole three phase asynchronous motor is compared; Energy conversion efficiency has exceeded standard 1.6%, has improved energy conversion efficiency greatly.

Claims

1. 3000 watt of 2 pole three phase asynchronous motor of ultra high efficiency; 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 stator outer diameter (12) is 18.00cm, and diameter of stator bore (8) is 9.70cm, and the length of stator core (4) is 12.00cm;

The quantity of described stator punching groove (6) is 24 and evenly distributes in the form of a ring; The flute profile of stator punching groove (6) is tiltedly to take on round bottomed vessel, and wherein bottom radius (61) is 5.30mm, and groove top dark (62) are 11.70mm; Groove shoulder height degree (63) is 0.878mm; Groove shoulder breadth degree (64) is 7.825mm, and width of rebate (65) is 3.00mm, and notch height (66) is 0.80mm;

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

Described rotor diameter (10) is 9.63cm, and rotor internal diameter (11) is 3.20cm, and the length of rotor core (5) is 12.00cm;

The quantity of described rotor punching groove (7) is 20 and evenly distributes in the form of a ring that the flute profile of rotor punching groove (7) is the two cage grooves of dome round bottom, and wherein notch height (71) is 0.60mm; Last groove radius (72) is 2.50mm; Following slot opening (73) is 1.00mm, and following notch high (74) is 1.50mm, and following groove top radius (75) is 2.60mm; Following slot part dark (76) is 7.00mm, and following bottom radius (77) is 1.50mm.