CN101917072A - Winding stator core of medium variable frequency motor - Google Patents
Winding stator core of medium variable frequency motor Download PDFInfo
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- CN101917072A CN101917072A CN 201010213043 CN201010213043A CN101917072A CN 101917072 A CN101917072 A CN 101917072A CN 201010213043 CN201010213043 CN 201010213043 CN 201010213043 A CN201010213043 A CN 201010213043A CN 101917072 A CN101917072 A CN 101917072A
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- stator
- stator coil
- coil
- frequency motor
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Abstract
The invention discloses a winding stator core of a medium variable frequency motor. The winding stator core comprises stator punching sheets; the stator punching sheets are provided with grooves; the laminated stator punching sheets connect the grooves to form a mounting groove body; a stator coil is arranged in the mounting groove body; a groove body insulating layer matched with the shape of the groove cavity is arranged in the mounting groove body; a bottom mat is placed on the bottom layer of the cavity of the groove body insulating layer; a lower stator coil is placed on the bottom mat; a middle mat is placed on the lower stator coil; an upper stator coil is placed on the middle mat; an adjusting mat is placed on the upper stator coil; and a groove wedge is placed on the adjusting mat. The lower stator coil and the upper stator coil consist of left and right independent coils respectively. The stator punching sheets are semi-open groove stator punching sheets, the grooves of the stator punching sheets are semi-open grooves, and the width of the notches is the sum of half of the groove width and 0.7 millimeter. The winding stator core improves the power factor and efficiency of the motor, reduces the capacity of a frequency converter, has good insulating property between windings, and is easy to improve the dv/dt value of the motor so as to improve the reliability of the medium variable frequency motor.
Description
Technical field
The present invention relates to medium-sized high-power frequency conversion motor, be specifically related to be used for height of center and be 315～710mm the high-power frequency conversion motor the winding stator core arranged.
Background technology
Along with the application of the high speed development of domestic power industry and frequency control drive system efficiently more and more widely, exigence exploitation high-power frequency conversion speed governing threephase asynchronous more.General variable-frequency motor adopts the transistor inverter power supply, and transistor inverter adopts high-frequency pulse, and the pulse lifting time is very short, how to guarantee that winding insulation does not puncture the key point that becomes the variable-frequency motor reliability under the crest value of impulse voltage effect.In recent years, domestic high-power frequency conversion motor adopted mostly loose roll off the production line repeatedly around or winding with one heart, because power of motor is big, voltage is low, electric current is very big, turn-to-turn operating voltage height, the defective (as the damage of paint film in the manufacture processes such as winding the line, roll off the production line, the quality of dipping lacquer) that enamel insulated round copper wire itself under loosing exists pin hole and manufacturing process to cause, and first circle of the coil under loosing in groove and last circle are collided easily, shorted-turn fault often appears after operation a period of time, reduce the reliability of medium-sized variable-frequency motor, shortened the life-span of medium-sized variable-frequency motor.If then the power factor of motor is not high, iron loss is big, efficient is low, has increased the capacity of frequency converter to adopt open slot, moulding group.
Summary of the invention
Order of the present invention is to overcome above shortcomings in the prior art, provide a kind of medium-sized variable-frequency motor that the winding stator core is arranged, effective activity coefficient height of its groove, arrangements of conductors are neat, the first and last circle is difficult for colliding, levels coil and winding overhang also have certain clearance, can fully improve the proof voltage pulse ability of variable-frequency motor.
Technical scheme of the present invention is as follows:
A kind of medium-sized variable-frequency motor has the winding stator core, comprises stator punching, and stator punching is provided with groove, and stacked stator punching links to each other groove to form cell body is installed, and stator coil is installed in the described installation cell body, and the top end opening of cell body is installed; Be provided with the cell body insulating barrier that coincide with its vallecular cavity shape in the described installation cell body, place heelpiece at cell body insulating barrier inner chamber bottom, on heelpiece, place lower floor's stator coil, pad on lower floor's stator coil, placing, on middle pad, place the upper strata stator coil, on the stator coil of upper strata, place adjusting pad, on adjusting pad, place slot wedge.
Its further technical scheme is: described lower floor stator coil by about two independently coil constitute.Described upper strata stator coil by about two independently coil constitute.
And its further technical scheme is: described stator punching is the semi-open slot stator punching, and its groove is a semi-open slot.The width of rebate of described semi-open slot is that half of flute profile width adds 0.7mm again.
Useful technique effect of the present invention is:
The present invention is simple in structure, compact; Improved power factor, the efficient of motor, reduced the capacity of frequency converter, the turn-to-turn insulation performance is good, easily improve the dv/dt value of motor, guaranteed that winding insulation is difficult for puncturing under the crest value of impulse voltage effect, thereby improved the reliability of medium-sized variable-frequency motor.Adopted the semi-open slot stator punching, improved motor power factor, efficient also increases, and reduces the capacity of frequency converter.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the cutaway view along A-A line among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 1, Fig. 2 show structure of the present invention.As shown in Figure 1 and Figure 2, the present invention includes semi-open slot stator punching 2, semi-open slot stator punching 2 is provided with semi-open slot, and its width of rebate is that half of flute profile width adds the 0.7mm (see figure 2) again.Stacked semi-open slot stator punching 2 links to each other semi-open slot to form cell body 8 is installed, and stator coil 1 is installed in to be installed in the cell body 8, and the top end opening of cell body 8 is installed.See Fig. 2, install and be provided with the cell body insulating barrier 4 that coincide with its vallecular cavity shape in the cell body 8, place heelpiece 3 at cell body insulating barrier 4 inner chamber bottoms, on heelpiece 3, place lower floor's stator coil 9, fill up 5 on lower floor's stator coil 9, placing, on middle pad 5, place upper strata stator coil 10, on upper strata stator coil 10, place adjusting pad 6, on adjusting pad 6, place slot wedge 7.Lower floor's stator coil 9 by about two independently loop A, B constitute, upper strata stator coil 10 by about two independently coil C, D constitute, promptly whole stator coil 1 by 4 independently coil constitute.
During assembly unit, after laying cell body insulating barrier 4 in the installation cell body 8 of half opening, stator coil 1 is down packed into for per half, form lower floor's stator coil 9 and upper strata stator coil 10, pad 5 in being encased inside between lower floor's stator coil 9 and the upper strata stator coil 10, and below stator coil 1, be encased inside heelpiece 3, and the top is encased inside an amount of adjusting pad 6, and the notch position embedded groove wedge 7 that cell body 8 is installed is fixing.Referring to Fig. 2, stator coil 1 installation process more specifically is, at first loop A entered the left side of pusher in the groove by notch, and lower coil B again with itself and loop A side by side, forms lower floor's stator coil 9 jointly; Same, again coil C is entered the left side of pusher in the groove by notch, place the top of loop A, and then lower coil B, with itself and loop A side by side and place the top of coil B, form upper strata stator coil 10 jointly.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present invention and design, all should think to be included within protection scope of the present invention.
Claims (5)
1. a medium-sized variable-frequency motor has the winding stator core, comprise stator punching (2), stator punching (2) is provided with groove, and stacked stator punching (2) links to each other groove to form cell body (8) is installed, stator coil (1) is installed in the described installation cell body (8), and the top end opening of cell body (8) is installed; It is characterized in that: be provided with the cell body insulating barrier (4) that coincide with its vallecular cavity shape in the described installation cell body (8), place heelpiece (3) at cell body insulating barrier (4) inner chamber bottom, go up placement lower floor's stator coil (9) at heelpiece (3), go up pad (5) in the placement at lower floor's stator coil (9), go up placement upper strata stator coil (10) at middle pad (5), go up placement adjusting pad (6) at upper strata stator coil (10), go up at adjusting pad (6) and place slot wedge (7).
2. according to the described medium-sized variable-frequency motor of claim 1 the winding stator core is arranged, it is characterized in that: described lower floor stator coil (9) by about two independently coil constitute.
3. according to the described medium-sized variable-frequency motor of claim 1 the winding stator core is arranged, it is characterized in that: described upper strata stator coil (10) by about two independently coil constitute.
4. according to the described medium-sized variable-frequency motor of claim 1 the winding stator core is arranged, it is characterized in that: described stator punching (2) is the semi-open slot stator punching, and its groove is a semi-open slot.
5. according to the described medium-sized variable-frequency motor of claim 4 the winding stator core is arranged, it is characterized in that: the width of rebate of described semi-open slot is that half of flute profile width adds 0.7mm again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010213043 CN101917072A (en) | 2010-06-21 | 2010-06-21 | Winding stator core of medium variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010213043 CN101917072A (en) | 2010-06-21 | 2010-06-21 | Winding stator core of medium variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101917072A true CN101917072A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010213043 Pending CN101917072A (en) | 2010-06-21 | 2010-06-21 | Winding stator core of medium variable frequency motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN101917072A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314507Y (en) * | 1997-08-26 | 1999-04-14 | 湘潭电机集团有限公司 | 6000Hz conversion motor |
| CN1925264A (en) * | 2005-08-30 | 2007-03-07 | 乐金电子(天津)电器有限公司 | Electric motor using armature |
| CN201422032Y (en) * | 2009-04-20 | 2010-03-10 | 无锡市中达电机有限公司 | Motor stator part structure with magnetic slot wedge |
| CN101860096A (en) * | 2010-05-17 | 2010-10-13 | 无锡市中达电机有限公司 | Stator core with winding for medium-sized low-voltage variable-frequency motor |
| CN201682335U (en) * | 2010-05-17 | 2010-12-22 | 无锡市中达电机有限公司 | Stator iron core with windings for medium large-power variable-frequency motor |
| CN201726207U (en) * | 2010-06-21 | 2011-01-26 | 无锡哈电电机有限公司 | Winding stator core of medium-sized variable frequency motor |
-
2010
- 2010-06-21 CN CN 201010213043 patent/CN101917072A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314507Y (en) * | 1997-08-26 | 1999-04-14 | 湘潭电机集团有限公司 | 6000Hz conversion motor |
| CN1925264A (en) * | 2005-08-30 | 2007-03-07 | 乐金电子(天津)电器有限公司 | Electric motor using armature |
| CN201422032Y (en) * | 2009-04-20 | 2010-03-10 | 无锡市中达电机有限公司 | Motor stator part structure with magnetic slot wedge |
| CN101860096A (en) * | 2010-05-17 | 2010-10-13 | 无锡市中达电机有限公司 | Stator core with winding for medium-sized low-voltage variable-frequency motor |
| CN201682335U (en) * | 2010-05-17 | 2010-12-22 | 无锡市中达电机有限公司 | Stator iron core with windings for medium large-power variable-frequency motor |
| CN201726207U (en) * | 2010-06-21 | 2011-01-26 | 无锡哈电电机有限公司 | Winding stator core of medium-sized variable frequency motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 214131 No. 777 East high wave road Applicant after: SEC Electric Machinery Co., Ltd. Address before: 214131 No. 2, Da Tong Road, Binhu Development Zone, Jiangsu, Wuxi Applicant before: Wuxi HEC Electric Machinery Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUXI HEC ELECTRIC MACHINERY CO., LTD. TO: SEC ELECTRIC MACHINERY CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101215 |