CN101420160A - Permanent magnet synchronous motor of sine pole width modulation - Google Patents
Permanent magnet synchronous motor of sine pole width modulation Download PDFInfo
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- CN101420160A CN101420160A CNA2007101575970A CN200710157597A CN101420160A CN 101420160 A CN101420160 A CN 101420160A CN A2007101575970 A CNA2007101575970 A CN A2007101575970A CN 200710157597 A CN200710157597 A CN 200710157597A CN 101420160 A CN101420160 A CN 101420160A
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- utmost point
- permanent magnet
- synchronous motor
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Abstract
The invention relates to a permanent magnet synchronous motor of sinusoidal pole width modulation, belonging to the technical field of motors. The motor comprises a rotation shaft (1), a bearing (2) which is matched with the rotation shaft (1), an end cover (3), a stator core (5) and a rotor core (6) which is matched with the rotation shaft (1); the motor is characterized in that n distribution-typed permanent magnetic pole (7), with unequal widths and intermittent spacings, are fixed at the circumference of the rotor core (6); the central line of the distribution-typed permanent magnet of No. i (i is equal to 1, 2, 3,..., n) and the central line of a magnetic pole have an electric angle of Theta which is equal to (2i-1)*pi/(2n); the width arc angle Alpha of the distribution-typed magnetic pole of No. i is equal to cos((i-1)*pi/n-cos(i*pi/n)); a squirrel cage rotor (8) is arranged outside the rotor core (6) and carries out circumference separation and circumferential positioning on the distribution-typed permanent magnetic pole (7). The invention has the advantages of high work efficiency, stable and reliable operation and obvious energy-saving characteristic.
Description
Technical field
The invention belongs to the motor technology field, relate in particular to the permanent magnet synchronous motor of the extremely wide modulation of a kind of sine.
Background technology
A kind of permanent magnet synchronous motor has lightness, high performance, characteristics such as energy-efficient, the market space is widely arranged, but the permanent magnet synchronous motor quantity proportion of actual motion is very few.The existing p-m rotor especially air-gap field of veneered construction foundation is a non-sinusoidal waveform, wherein has a large amount of harmonic waves, thereby makes copper loss, iron loss, the assorted consumption of motor increase, and decrease in efficiency, temperature rise raise, and the power savings advantages of permanent magnet synchronous motor can't embody; In addition, also can produce the pulsating electromagnetic torque and cause speed oscillation, influence operation stability and reliability, directly limit and used and promote.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and a kind of high efficiency is provided, and is stable, reliable, the permanent magnet synchronous motor of the significantly sinusoidal extremely wide modulation of power savings advantages.
For solving the problems of the technologies described above, the present invention is achieved in that
The permanent magnet synchronous motor of sinusoidal extremely wide modulation comprises rotating shaft, bearing, end cap, the stator core that connects with described rotating shaft and the rotor core that fixedly connects with described rotating shaft; Circumferentially fixedly be furnished with n the distributed permanent utmost point at described rotor core; The width of the described distributed permanent utmost point does not wait, and interval width does not wait yet; I distributed permanent utmost point center line is apart from big pole center line θ
i=(2i-1) electrical degree of π/(2n); The width arc angle of i distribution magnetic pole is α
i=cos[-1) π/n]-cos (electrical degree of i π/n).
As a kind of preferred version, the present invention can be furnished with the rotor mouse cage outside described rotor core; Described rotor mouse cage carries out the circumference separation to the distributed permanent utmost point and circumferentially locatees.
The width of the distributed permanent utmost point of the present invention can adopt sinusoidal wave area equivalent principle to determine, also can adopt triangular wave or SPWM modulation system to determine.
As another kind of preferred version, the present invention can be furnished with the starting sliver between the described distributed permanent utmost point; Described starting sliver and end ring fixedly connect the formation cage rotor.
As other the third preferred version, in described end cap, can be furnished with cooling fan.
The present invention places the distributed permanent utmost point on the rotor core surface, the width of each distributed permanent utmost point does not wait, interval width between the distributed permanent utmost point is also unequal, thereby form the permanent magnet rotor structure of the extremely wide modulation of a kind of sine, the field waveform that the feasible extremely wide modulation system rotor that is made of the distributed permanent utmost point produces is more near sinusoidal wave, overcome the deficiency of p-m rotor field structure, realized high efficiency and High Power Factor.Space between the distribution for permanent magnetic utmost point is used for being provided with the starting sliver, with realization self-starting and damping function, thereby has improved the stability and the reliability of the present invention's operation.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention will not only be confined to the statement of following content.
Fig. 1 is the permanent-magnet synchronous motor rotor punching structural representation of the extremely wide modulation of sine of the present invention;
Fig. 2 is the permanent magnet synchronous motor partial structurtes schematic diagram of the extremely wide modulation of sine of the present invention;
Fig. 3 is a pole span size relationship of the permanent-magnet synchronous motor rotor punching figure of the extremely wide modulation of sine of the present invention.
Embodiment
The permanent magnet synchronous motor of sinusoidal extremely wide modulation comprises rotating shaft 1, bearing 2, end cap 3, the stator core 5 that connects with described rotating shaft 1 and the rotor core 6 that connects with described rotating shaft 1; It is characterized in that: circumferentially fixedly be furnished with n the distributed permanent utmost point 7 at described rotor core 6; The width of the described distributed permanent utmost point 7 does not wait, and interval width does not wait yet; I distributed permanent utmost point center line is apart from big pole center line θ
i=(2i-1) electrical degree of π/(2n); The width arc angle of i distribution magnetic pole is α
i=cos[-1) π/n]-cos (electrical degree of i π/n).Outside described rotor core 6, is furnished with rotor mouse cage 8; 8 pairs of distributed permanent utmost points of described rotor mouse cage 7 carry out the circumference separation and circumferentially locate.The width of the described distributed permanent utmost point 7 adopts sinusoidal wave area equivalent principle to determine.The width of the described distributed permanent utmost point 7 also can adopt triangular wave or SPWM modulation system to determine.Between the described distributed permanent utmost point 7, is furnished with starting sliver 12; Described starting sliver 12 passes through casting simultaneously with the end ring that is positioned at rotor core 6 two ends or welding manner constitutes rotor mouse cage 8.In described end cap 3, can be furnished with cooling fan 9.
The working temperature of permanent magnetic material used herein satisfies the requirement of operating temperature, in order to avoid the heat demagnetization.When design of electrical motor, the maximum degaussing working point of permanent magnet should be when used permanent magnetic material maximum operation temperature and maximum demagnetization magnetic potential more than the demagnetization curve flex point, and leaves certain surplus.
As shown in Figure 1, the distributed permanent utmost point 7 that carries out extremely wide modulation by sine wave is housed on the permanent-magnet synchronous motor rotor iron core of the present invention, the distribution for permanent magnetic utmost point 7 carries out circumference by rotor mouse cage 8 to be separated and circumferential location, and all the other structures are identical with squirrel-cage asynchronous motor.As shown in Figure 2, the present invention includes rotating shaft 1, bearing 2, end cap 3, support 4, stator core 5, rotor core 6, permanent-magnet pole 7, rotor mouse cage 8 and/or cooling fan 9, fan housing 11 and key 10.Stator core 5 is embedded with stator winding and links to each other with electrical source of power, produces rotating magnetic field; Be provided with starting sliver 12 between rotor core 6 lip-deep distribution magnetic poles, starting sliver 12 is made of cast aluminium and/or copper, links to each other with end ring to form loop formation rotor mouse cage 8, to produce starting torque and damping torque, realizes self-starting and high stability.
Place the distributed permanent utmost point on the rotor core surface, the width of the distributed permanent utmost point does not wait, and interval width is also unequal.The width of the distributed permanent utmost point can be determined according to the principle of sinusoidal wave area equivalent, also can design with triangular wave or other SPWM modulator approaches.The distributed permanent utmost point 7 of sinusoidal extremely wide modulation is set on rotor core 6 surfaces, and embodiment illustrated in fig. 3 is bipolar motor; Its rotor magnetic pole constitutes i (i=1,2, Λ, n) the big pole center line of individual distribution pole center line-spacing θ by n little permanent-magnet pole 7 that distributes
i=(2i-1) electrical degree of π/(2n), the width arc angle of i distribution magnetic pole is α
i=cos[(i-1) π/n]-cos (electrical degree of i π/n).The field waveform that the extremely wide modulation system rotor magnetic pole that the distributed permanent utmost point constitutes produces near sinusoidal wave, is realized high efficiency and High Power Factor more.
Between rotor core 6 surface distributed formula permanent-magnet poles 7, starting sliver 12 is set and constitutes cage rotor 8 with end ring, simultaneously the distributed permanent utmost point 7 being carried out circumference separates and circumferential location, the magnet steel of distribution magnetic pole utilizes glue and/or mechanical system to be fixed on the rotor core outside, laggard action balance check and correction.
The distributed permanent utmost point that carries out extremely wide modulation by sine wave disclosed in this invention can be used for magneto alternator equally.
Claims (4)
1, the permanent magnet synchronous motor of sinusoidal extremely wide modulation comprises rotating shaft (1), bearing (2), end cap (3), the stator core (5) that connects with described rotating shaft (1) and the rotor core (6) that fixedly connects with described rotating shaft (1); It is characterized in that: circumferentially fixedly be furnished with n the distributed permanent utmost point (7) at described rotor core (6); The width of the described distributed permanent utmost point (7) does not wait, and interval width does not wait yet; I distributed permanent utmost point center line is apart from the electrical degree of the π of big pole center line θ=(2i-1)/(2n); The width arc angle of i distribution magnetic pole is α
i=cos[(i-1) π/n]-cos (electrical degree of i π/n).
2, the permanent magnet synchronous motor of the extremely wide modulation of sine according to claim 1 is characterized in that: be furnished with outside described rotor core (6) the distributed permanent utmost point (7) is carried out the rotor mouse cage (8) that circumference is separated and circumferentially located.
3, the permanent magnet synchronous motor of the extremely wide modulation of sine according to claim 1 and 2 is characterized in that: be furnished with starting sliver (12) between the described distributed permanent utmost point (7); Described starting sliver (12) fixedly connects with the end ring that is positioned at rotor core (6) two ends and constitutes rotor mouse cage (8).
4, the permanent magnet synchronous motor of the extremely wide modulation of sine according to claim 3 is characterized in that: be furnished with cooling fan (9) in described end cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101575970A CN101420160B (en) | 2007-10-22 | 2007-10-22 | Permanent magnet synchronous motor of sine pole width modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101575970A CN101420160B (en) | 2007-10-22 | 2007-10-22 | Permanent magnet synchronous motor of sine pole width modulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101420160A true CN101420160A (en) | 2009-04-29 |
| CN101420160B CN101420160B (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101575970A Expired - Fee Related CN101420160B (en) | 2007-10-22 | 2007-10-22 | Permanent magnet synchronous motor of sine pole width modulation |
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| CN (1) | CN101420160B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138416A (en) * | 2011-12-02 | 2013-06-05 | 财团法人工业技术研究院 | multilayer microstructure magnet |
| CN103178656A (en) * | 2011-12-22 | 2013-06-26 | 襄阳南车电机技术有限公司 | Steel rail grinding wagon electric motor |
| CN104539129A (en) * | 2015-01-08 | 2015-04-22 | 江西东江机电有限公司 | Asynchronous starting permanent-magnet synchronous motor and asynchronous motor transformation method |
| CN105119452A (en) * | 2015-09-02 | 2015-12-02 | 浙江创美机电有限公司 | Centrifugal pump of asynchronous-starting permanent-magnet-synchronous motor |
| CN105576869A (en) * | 2016-02-18 | 2016-05-11 | 华南理工大学 | Surface inlaid self-starting permanent-magnet synchronous motor rotor |
| CN105604136A (en) * | 2015-10-08 | 2016-05-25 | 浙江创美机电有限公司 | Constant-pressure non-negative pressure water supplying unit adopting permanent magnet synchronous motors |
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| CN107070031A (en) * | 2017-05-15 | 2017-08-18 | 华中科技大学 | A kind of rotor, stator and many work harmonic wave magnetoes |
| EP3496237A1 (en) * | 2017-12-08 | 2019-06-12 | Valeo Systèmes d'Essuyage | Brushless direct current electric motor for a motor vehicle wiping system |
| WO2022170894A1 (en) * | 2021-02-10 | 2022-08-18 | 株洲中车时代电气股份有限公司 | Permanent magnet arrangement method for electric motor |
Family Cites Families (3)
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| CN1199336C (en) * | 2001-12-14 | 2005-04-27 | 株式会社东芝 | Permanent-magnetic motor and elevator device |
| CN2850109Y (en) * | 2005-11-11 | 2006-12-20 | 沈阳工业大学 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
| CN201107841Y (en) * | 2007-10-22 | 2008-08-27 | 沈阳工业大学 | Permanent magnet synchronous motor of sine pole width modulation |
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2007
- 2007-10-22 CN CN2007101575970A patent/CN101420160B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138416A (en) * | 2011-12-02 | 2013-06-05 | 财团法人工业技术研究院 | multilayer microstructure magnet |
| CN103178656A (en) * | 2011-12-22 | 2013-06-26 | 襄阳南车电机技术有限公司 | Steel rail grinding wagon electric motor |
| CN104539129A (en) * | 2015-01-08 | 2015-04-22 | 江西东江机电有限公司 | Asynchronous starting permanent-magnet synchronous motor and asynchronous motor transformation method |
| CN105119452A (en) * | 2015-09-02 | 2015-12-02 | 浙江创美机电有限公司 | Centrifugal pump of asynchronous-starting permanent-magnet-synchronous motor |
| CN105604136A (en) * | 2015-10-08 | 2016-05-25 | 浙江创美机电有限公司 | Constant-pressure non-negative pressure water supplying unit adopting permanent magnet synchronous motors |
| CN105576869A (en) * | 2016-02-18 | 2016-05-11 | 华南理工大学 | Surface inlaid self-starting permanent-magnet synchronous motor rotor |
| CN107070031B (en) * | 2017-05-15 | 2020-07-14 | 华中科技大学 | Rotor, stator and multi-working harmonic permanent magnet motor |
| CN107070031A (en) * | 2017-05-15 | 2017-08-18 | 华中科技大学 | A kind of rotor, stator and many work harmonic wave magnetoes |
| WO2018209738A1 (en) * | 2017-05-15 | 2018-11-22 | 华中科技大学 | Rotor, stator, and multi-working harmonic permanent magnet motor |
| US11356005B2 (en) | 2017-05-15 | 2022-06-07 | Huazhong University Of Science And Technology | Rotor, stator and multi-working-harmonic permanent magnet motor |
| CN106961175A (en) * | 2017-05-26 | 2017-07-18 | 江西清华泰豪三波电机有限公司 | Magneto outer rotor and the magneto for adjusting magnetic shoe shape |
| FR3074979A1 (en) * | 2017-12-08 | 2019-06-14 | Valeo Systemes D'essuyage | BRUSHLESS DIRECT CURRENT ELECTRIC MOTOR FOR A MOTOR VEHICLE WIPING SYSTEM |
| US20190181704A1 (en) * | 2017-12-08 | 2019-06-13 | Valeo Systèmes d'Essuyage | Brushless dc electric motor for automotive vehicle wiper system |
| EP3496237A1 (en) * | 2017-12-08 | 2019-06-12 | Valeo Systèmes d'Essuyage | Brushless direct current electric motor for a motor vehicle wiping system |
| WO2022170894A1 (en) * | 2021-02-10 | 2022-08-18 | 株洲中车时代电气股份有限公司 | Permanent magnet arrangement method for electric motor |
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| CN101420160B (en) | 2010-11-24 |
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Owner name: XUZHOU CURRENCY MAGNETOELECTRICITY CO., LTD. Free format text: FORMER OWNER: SHENYANG UNIVERSITY OF TECHNOLOGY Effective date: 20150317 |
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Free format text: CORRECT: ADDRESS; FROM: 110023 SHENYANG, LIAONING PROVINCE TO: 221100 XUZHOU, JIANGSU PROVINCE |
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Effective date of registration: 20150317 Address after: 221100 Jiangsu Province, Xuzhou city Jiawang District qingshanquan Chun Industrial Park Patentee after: Xuzhou Currency Magnetoelectricity Co., Ltd. Address before: 110023 Tiexi, Liaoning Province Xinghua South Street, No. 58, No. Patentee before: Shenyang University of Technology |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20101124 Termination date: 20161022 |