CN101984540B - Mixed concentric single and two-layer winding for servo permanent magnet synchronous motor - Google Patents

Mixed concentric single and two-layer winding for servo permanent magnet synchronous motor Download PDF

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Publication number
CN101984540B
CN101984540B CN201010568512XA CN201010568512A CN101984540B CN 101984540 B CN101984540 B CN 101984540B CN 201010568512X A CN201010568512X A CN 201010568512XA CN 201010568512 A CN201010568512 A CN 201010568512A CN 101984540 B CN101984540 B CN 101984540B
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winding
motor
concentric
groove
concentric type
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CN101984540A (en
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林政安
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Tellhow Sci Tech Co Ltd
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Tellhow Sci Tech Co Ltd
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Abstract

The invention relates to a mixed concentric single and two-layer winding for a servo permanent magnet synchronous motor. A motor stator winding is a single and two-layer winding formed by mixing two concentric windings, wherein the number of turns of the coil of each of the two concentric windings is 3, and the pitches and the numbers of turns of the two concentric windings are different. Compared with the short-pitch two-layer winding for the foreign similar motor, the formed mixed concentric single and two-layer winding has the advantages that the fundamental wave winding coefficient is improved by 2.08%, the phase belt harmonic waves are reduced by 45%, the magnetic potential sine property is better, the heating is small, the temperature rise is low, the vibration noise is small, the torque pulsation is small, the insulation between groove layers is reduced by 28.59%, the cost is reduced, the efficiency is improved, the operating quality of the motor is improved, and the machining precision is improved.

Description

Servo permanent magnet synchronous motor mixing concentric type list two layer winding
Technical field
The present invention relates to a kind of motor winding, especially a kind of servo permanent magnet synchronous motor mixing concentric type list two layer winding.
Background technology
In the servo principal axis motor, be mainly asynchronous interconnected cage motor in the past, during as spindle motor, little at low speed low frequency state; Torque is little, and heating is serious, for overcoming this emphasis defective; Researching and developing servo permanent magnet synchronous motor is a direction, but permanent magnet motor is for reducing slot effect, so majority is designed to mark groove motor; Fractional slot winding is designed to the short distance two layer winding traditionally, and some odd harmonic is still bigger in its facies tract the harmonics of magnetic force, and torque pulsation is bigger during the motor operation; Influence riding quality and workpiece machining accuracy, how to improve short distance two layer winding traditionally, make odd harmonics all in its facies tract the harmonics of magnetic force that bigger weakening all arranged; Study novel fractional slot winding, further improve the riding quality of servo permanent magnet synchronous motor, the real world applications meaning is arranged very much.
Summary of the invention
The object of the invention is exactly to fractional-slot tradition short distance two layer winding; Only some odd harmonic in the facies tract magnetic potential there is bigger weakening; And the situation of bigger weakening can not be arranged all to all odd harmonics simultaneously; A kind of servo permanent magnet synchronous motor mixing concentric type list two layer winding is provided, and this winding has bigger weakening to all odd harmonics in the magnetic potential, improves the sine property of facies tract mmf wave.
The present invention realizes that like this at a kind of stator 42 grooves, 8 utmost points are in the permanent magnet motor of 3 phases; Make the three-phase stator winding of motor form single two layer winding by two kinds of concentric type windings mixing, the wire circle of these two kinds of concentric type windings all is 3 circles, but its pitch and the number of turn are all inequality, the 1st kind of concentric type winding; Be made up of 3 concentric coils, its pitch is respectively 8,6,4 from the great circle to the ringlet; The number of turn of each coil is 1,3,2 from the great circle to the ringlet; The 2nd kind of concentric type winding also is made up of 3 concentric coils, and its pitch is respectively 7,5,3 from the great circle to the ringlet, and the number of turn of each coil is 2,4,2 from the great circle to the ringlet.The 1st kind of concentric type winding and the 2nd kind of concentric type winding mix forms 1, and every phase winding is composed in series by 2, and parallel branch is counted a=1;
3 phase windings constitute the symmetric winding of 120 ° of electrical degrees of three-phase mutual deviation, and 3 phase windings have 12 grooves in stator slot be the individual layer groove, and 30 grooves are double-deck groove, and the total number of turns in every groove equates that copper factor is balanced, the winding that constitutes like this, facies tract the harmonics of magnetic force 5; 7,11,13,17,19,23,29; 31,35,37 times all bigger weakening, the total content of these harmonic waves is merely 1.24%, and by traditional short distance two layer winding, facies tract the harmonics of magnetic force still content is bigger, for example a kind of external servo permanent magnet synchronous motor; Number of stator slots also is 42 grooves, and number of poles also is 8 utmost points, and the number of phases also is 3 phases, is 4 to constitute the short distance two layer winding by pitch, and this winding is only to 5,11,13; 23,29,31,37 subharmonic weaken bigger, and even so, these harmonic wave total contents just reach 1.44%; Just surpass 1.24%, and little to the weakening of 7,17,25,35 subharmonic, to making 5; 7,11,13,17,19,23; 29,31,35,37 subharmonic total contents reach 2.76%, during this external servo permanent magnet motor work torque pulsation bigger, influenced the machining accuracy of workpiece.
The present invention is a kind of mixing concentric type list two layer winding, and the harmonic wave total content is 1.24%, and than 2.76% much less, harmonic content reduces 45%, has improved facies tract magnetic potential ripple sine property.Reduce torque pulsation, improved the machining accuracy of workpiece.
Description of drawings
Fig. 1 is a three-phase mixing concentric type list two layer winding layout plan of the present invention.
Embodiment
As shown in Figure 1, the motor stator slot number is 42 grooves, and number of poles is 8 utmost points, the three-phase mixing concentric type list two layer winding of 3 phase motors, and the stator winding of motor is mixed by 2 kinds of concentric type windings and forms.A is made up of the AX winding, has 2 kinds of concentric type windings to mix, and the 1st kind of concentric type winding is made up of 3 ceoncentrically wound coils, and pitch is 8,6,4 from the great circle to the ringlet; The number of turn of each coil is 1,3,2 from the great circle to the ringlet; The 2nd kind of concentric type also is made up of 3 concentric coils, and its pitch is 7,5,3 from the great circle to the ringlet; The number of turn of each coil is 2,4,2 from the great circle to the ringlet;
The 1st kind of concentric type winding and the 2nd kind of concentric type winding mix forms one, and every phase winding is composed in series by 2, and parallel branch is counted a=1, and concrete layout is: A phase AX winding is by coil 6-14,7-13,8-12; 17-24,18-23,19-22; 27-35,28-34,29-33; 38-3,39-2,40-1; 12 coils are in series, and coil turn from left to right is 1,3,2; 2,4,2; 1,3,2; 2,4,2; Outlet is drawn from 1,6 groove, is labeled as A, X respectively.
B is by the BY winding, and C is made up of the CZ winding, BY, and CZ winding coil component law and AX are in full accord, are AX, BY; 120 ° of electrical degrees of CZ mutual deviation constitute three-phase symmetric winding, and it is the individual layer groove that 12 grooves are arranged in 42 grooves, and 30 grooves are double-deck groove, equal turn numbers in each groove, and copper factor is balanced; BY draws from the 15th, 20 groove, is labeled as B respectively, Y, and CZ draws from the 8th, 12 groove; Be labeled as C respectively, Z, and with X, Y, Z connects into common point; Do not draw outside the motor, an A, B, C is drawn out to outlet box, and three phase windings constitute star connection.
The advantage that the concentric type that constitutes like this mixes single two layer winding is:
1, to institute odd inferior 5,7,11,13,17,19; 23,29,31,35,37 times the facies tract the harmonics of magnetic force all has bigger weakening; The total content of these harmonic waves only 1.24% than external similar motor harmonic content 2.76%, reduces 45%, and motor magnetic potential sine property is good, and heating reduces; Temperature rise reduces, and vibration, noise reduce, and torque pulsation reduces, and has improved riding quality, and machining accuracy improves;
2, fundamental wave winding coefficient 0.9105, improves 2.08% than external similar motor fundamental wave winding coefficient 0.8897, and harmonic wave reduces 45%, so efficient improves;
The single two layer winding of the present invention is in 42 grooves 2,4,9,11; 16,18,23,25,30; 32,37,39 grooves are the individual layer groove, amount to 12 individual layer grooves, account for 28.57% of total groove number; Double-deck groove accounts for 30, accounts for 71.43% of total groove number, is that double-deck groove is saved groove interlayer dielectic 28.57% than external similar motor 100%, has lowered motor cost, lacks than external motor two layer winding end portions cross owing to concentric type list two layer winding end again; The end is shorter, so the winding overhang quality is improved, these advantages make the present invention reach the purpose of invention, have significant practical applications and dissemination.

Claims (1)

1. OnePlant servo permanent magnet synchronous motor mixing concentric type two layer winding, several 42 grooves of motor stator slot, number of poles 8 utmost points; The number of phases 3 phases, the stator winding of motor are mixed by two kinds of concentric type windings and are formed, and it is characterized in that A is made up of the AX winding; Have 2 kinds of concentric type windings to mix, the 1st kind of concentric type winding is made up of 3 ceoncentrically wound coils, and pitch is 8 from the great circle to the ringlet; 6,4; The number of turn of each coil is 1,3,2 from the great circle to the ringlet; The 2nd kind of concentric type also is made up of 3 concentric coils, and its pitch is 7,5,3 from the great circle to the ringlet, and the number of turn of each coil is 2,4,2 from the great circle to the ringlet; The 1st kind of concentric type winding and the 2nd kind of concentric type winding mix forms one, and every phase winding is composed in series by 2, and parallel branch is counted a=1, and concrete layout is: A phase AX winding is by coil 6-14,7-13,8-12; 17-24,18-23,19-22; 27-35,28-34,29-33; 38-3,39-2,40-1; 12 coils are in series, and coil turn from left to right is 1,3,2; 2,4,2; 1,3,2; 2,4,2; Outlet is drawn from 1,6 groove, is labeled as A, X respectively; B is by the BY winding, and C is made up of the CZ winding, BY, and CZ winding coil component law and AX are in full accord, are AX, BY, 120 ° of electrical degrees of CZ mutual deviation constitute three-phase symmetric winding; In 42 grooves 2,4,9,11,16,18,23,25; 30,32,37,39 grooves are the individual layer groove, amount to 12 individual layer grooves, and 30 grooves are double-deck groove, equal turn numbers in each groove, and copper factor is balanced; BY draws from the 15th, 20 groove, is labeled as B respectively, Y, and CZ draws from the 8th, 12 groove, is labeled as C, Z respectively; And with X, Y, Z connects into common point, do not draw outside the motor, an A, B, C is drawn out to outlet box, and three phase windings constitute star connection.
CN201010568512XA 2010-12-01 2010-12-01 Mixed concentric single and two-layer winding for servo permanent magnet synchronous motor Active CN101984540B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593978A (en) * 2012-02-27 2012-07-18 山东大学 Double-winding permanent-magnet brushless servo motor for servo press machine
CN103208875A (en) * 2012-12-17 2013-07-17 江苏大中电机股份有限公司 High-efficiency stator winding for motor
CN103414272A (en) * 2013-07-09 2013-11-27 郑州飞机装备有限责任公司 Asynchronous starting three-phase permanent magnet synchronous motor stator winding design method
CN105978202B (en) * 2016-06-21 2018-04-03 天津大学 A kind of pole three phase alternating current motor list double layered stator winding of 24 groove 2
CN112803633B (en) * 2021-01-22 2022-04-22 珠海格力电器股份有限公司 Motor stator and motor

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JP2004096940A (en) * 2002-09-03 2004-03-25 Mitsubishi Electric Corp Permanent magnet type synchronous motor
CN1458734A (en) * 2003-05-28 2003-11-26 刘硕成 Three phase AC permanent magnet synchronous motor
DE102004044697B4 (en) * 2004-09-15 2009-02-26 Siemens Ag synchronous machine
CN2805187Y (en) * 2005-05-19 2006-08-09 上海电器科学研究所(集团)有限公司 Double layer, concentric winding structure for large power electric motor
CN100405704C (en) * 2005-08-31 2008-07-23 北京中科三环高技术股份有限公司 Fractional slot winding for slow-run large torque moment permanent-magnet brushless motor
CN201860191U (en) * 2010-12-01 2011-06-08 泰豪科技股份有限公司 Mixed concentric single-double-layer winding of servo permanent magnet synchronous motor

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