CN102185401B - High speed permanent magnet synchronous motor rotor - Google Patents
High speed permanent magnet synchronous motor rotor Download PDFInfo
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- CN102185401B CN102185401B CN 201110117459 CN201110117459A CN102185401B CN 102185401 B CN102185401 B CN 102185401B CN 201110117459 CN201110117459 CN 201110117459 CN 201110117459 A CN201110117459 A CN 201110117459A CN 102185401 B CN102185401 B CN 102185401B
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- permanent magnet
- magnetic pole
- rotor
- synchronous motor
- magnet synchronous
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Abstract
The invention discloses a high speed permanent magnet synchronous motor rotor, which relates to a permanent magnet synchronous motor rotor. The problem of overhigh rotor temperature in the running of a conventional high speed permanent magnet motor of which a rotor side is provided with a protective sleeve is arranged is solved. In the high speed permanent magnet synchronous motor rotor, a magnetic pole unit consists of 1 to 3 permanent magnets and a thermally conductive body; a pair of magnetic poles consists of 2 to 6 magnetic pole units; a magnetic pole ring consists of 1 or 2 pairs of magnetic poles; the magnetic pole ring is annularly sleeved on a hollow rotating shaft; and the protective sleeve of the rotor is sleeved outside the magnetic pole ring. In the novel high speed permanent magnet synchronous motor rotor adopting the structure, on one hand, heat produced in the permanent magnets is easier to transfer to the protective sleeve and an air gap by the thermally conductive body, and is brought away by stator radiation measures when the motor works; and on the other hand, the heat of the protective sleeve and the permanent magnets is effectively transferred to the rotating shaft by the thermally conductive body, and is dissipated by heat exchange between air in a hollow shaft hole and the outside. Therefore, the temperature of the permanent magnets of the rotor is greatly reduced when the high speed permanent magnet synchronous motor works, the running stability of the motor is improved, and the service life of the permanent magnets is prolonged.
Description
Technical field
The present invention relates to permanent-magnetic synchronous motor rotor.
Technical background
High-speed permanent magnet motor is because rotating speed is high, and the power density of motor is large, and its physical dimension is much smaller than the identical middle slowspeed machine of power output, therefore effective economical with materials; The high-speed electric expreess locomotive moment of inertia is less, and dynamic response is very fast, and can directly link to each other with prime mover or load, saves traditional mechanical variable speed device, has reduced noise, has improved transmission efficiency.Therefore high-speed permanent magnet motor is having broad application prospects aspect distributed power supply system, flywheel energy storage, high speed grinding machine, compressor, the aviation.
High-speed permanent magnet motor is generally operational in that per minute is tens thousand of to be turned even tens0000 fast states that turn, be in operation and produce series of problems, bear except rotor the mechanical problems such as centrifugal force is too high, rotating shaft serious wear, high frequency magnetic field causes that stator core supplementary load loss and rotor eddy current loss increase considerably in the motor, improve the temperature in the motor, reduced permanent magnet performance; If the rotor dispersing heat condition is bad, too high temperature may cause the permanent magnet irreversible demagnetization, thereby shortens electrical machinery life.
Summary of the invention
Technical problem to be solved by this invention is that eddy current loss is large and cause the solid rotor temperature rise too high when overcoming existing high speed permanent magnet motor rotor side and adding protective sleeve; reduced permanent magnet performance; even produce non-reversible high-temperature loss of excitation problem, a kind of speed permanent magnet synchronous motor rotor structure is provided.
The present invention solves the technical scheme of its technical problem:
A kind of speed permanent magnet synchronous motor rotor, this rotor comprises: rotating shaft, permanent magnet, heat carrier, rotor protection cover.
Rotating shaft is a hollow shaft;
N permanent magnet and a heat carrier consist of a magnetic pole unit;
M magnetic pole unit consists of a pair of magnetic pole;
1 or 2 pair of magnetic pole magnetic poles ring, the pole ring ring set is in rotating shaft, and the rotor protection cover is enclosed within the outside of pole ring;
Permanent magnet and heat carrier cross section are fan-shaped;
N is 1～3;
M is 2～6.
The material of described heat carrier adopts copper, aluminium or alloy.
Described heat carrier with the mating surface of rotating shaft on, three fan-shaped projections vertically evenly distribute;
The described rotating shaft scallop hole that evenly distributes vertically matches with fan-shaped projection on the heat carrier.
Described heat carrier and described rotor protection cover are processed into one by its shape.
The present invention is compared with existing technology the beneficial effect that has:
The novel high speed permanent-magnetic synchronous motor rotor structure that invention proposes, changed the hot road of conventional structure rotor, because heat carrier adopts preferably material of heat conductivility, the perhaps alloy material identical with sheath material, on the one hand, the inner heat that produces of permanent magnet can be by easier protective sleeve and the air gap of being delivered to of heat carrier during machine operation, and then takes away heat by the stator cooling measure; On the other hand, heat carrier can be delivered to rotating shaft effectively fast with the heat of sheath and permanent magnet, by air and heat exchange with outside in the hollow axis hole heat loss is fallen.Under this structure, the temperature of rotor permanent magnet reduces greatly during high-speed permanent magnetic synchronous motor work, not only improves the motor operation stability, and has prolonged the useful life of permanent magnet.
Description of drawings
Speed permanent magnet synchronous motor rotor tomograph when Fig. 1 is four magnetic pole units of a pair of magnetic pole.
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is the speed permanent magnet synchronous motor rotor tomograph during with four magnetic pole units of a pair of magnetic pole of three fan-shaped projections on the heat carrier.
Fig. 4 is the cross-sectional view of Fig. 3.
Fig. 5 is the pivot structure sectional view among Fig. 3.
Fig. 6 is the A-A profile of Fig. 5.
Fig. 7 is the front view of the heat carrier among Fig. 3.
Fig. 8 is the left view of heat carrier.
The speed permanent magnet synchronous motor rotor tomograph of four magnetic pole units of a pair of magnetic pole when Fig. 9 heat carrier and rotor protection cover are processed into one.
Figure 10 is the cross-sectional view of Fig. 9.
The speed permanent magnet synchronous motor rotor cross-sectional view of four magnetic pole units of a pair of magnetic pole when Figure 11 is two permanent magnets and a magnetic pole unit of a heat carrier formation.
The speed permanent magnet synchronous motor rotor cross-sectional view of four magnetic pole units of a pair of magnetic pole when Figure 12 is three permanent magnets and a magnetic pole unit of a heat carrier formation.
The speed permanent magnet synchronous motor rotor cross-sectional view of six magnetic pole units of a pair of magnetic pole when Figure 13 is a permanent magnet and a magnetic pole unit of a heat carrier formation.
The speed permanent magnet synchronous motor rotor cross-sectional view of eight magnetic pole units of a pair of magnetic pole when Figure 14 is two permanent magnets and a magnetic pole unit of a heat carrier formation.
The speed permanent magnet synchronous motor rotor cross-sectional view of four magnetic pole units of two pairs of magnetic poles when Figure 15 is two permanent magnets and a magnetic pole unit of a heat carrier formation.
The speed permanent magnet synchronous motor rotor cross-sectional view of eight magnetic pole units of two pairs of magnetic poles when Figure 16 is two permanent magnets and a magnetic pole unit of a heat carrier formation.
Embodiment
The invention will be further described by reference to the accompanying drawings.
Embodiment one:
A kind of speed permanent magnet synchronous motor rotor, as depicted in figs. 1 and 2, this rotor comprises: rotating shaft 4, permanent magnet 2, heat carrier 3, rotor protection cover 1.
A permanent magnet 2 and a heat carrier 3 consist of a magnetic pole unit;
Four magnetic pole units consist of a pair of magnetic pole;
A pair of magnetic pole magnetic poles ring, pole ring ring set are in rotating shaft 4, and rotor protection cover 1 is enclosed within the outside of pole ring;
The material of described heat carrier 3 adopts copper.
Embodiment two:
A kind of speed permanent magnet synchronous motor rotor, such as Fig. 3～shown in Figure 8, this rotor comprises: rotating shaft 4, permanent magnet 2, heat carrier 3, rotor protection cover 1.
Described rotating shaft 4 is a hollow shaft;
Described heat carrier 3 with the mating surface of rotating shaft 4 on, three fan-shaped projections vertically evenly distribute;
Described rotating shaft 4 scallop hole that evenly distributes vertically matches with fan-shaped projection on the heat carrier 3;
A permanent magnet 2 and a heat carrier 3 consist of a magnetic pole unit;
Four magnetic pole units consist of a pair of magnetic pole;
A pair of magnetic pole magnetic poles ring, pole ring ring set are in rotating shaft 4, and rotor protection cover 1 is enclosed within the outside of pole ring;
The material of described heat carrier 3 adopts aluminium.
Execution mode three:
A kind of speed permanent magnet synchronous motor rotor, as shown in Figure 9 and Figure 10, this rotor comprises: rotating shaft 4, permanent magnet 2, heat carrier 3, rotor protection cover 1.
Described rotating shaft 4 is a hollow shaft;
Described heat carrier 3 and described rotor protection cover 1 adopt same material integral body to be processed into integral member.
Described rotating shaft 4 is packed in the above-mentioned member, form field frame, press magnetic pole and distribute and described permanent magnet 2 is inserted in the field frames formation speed permanent magnet synchronous motor rotor.
Described integral member adopts the 50Mn18Cr5 alloy.
Claims (1)
1. speed permanent magnet synchronous motor rotor, this rotor comprises, rotating shaft, permanent magnetism magnetic pole, rotor protection cover, permanent magnetism magnetic pole is enclosed within the rotating shaft;
Rotating shaft (4) is a hollow shaft;
N permanent magnet (2) and a heat carrier (3) consist of a magnetic pole unit;
M magnetic pole unit consists of a pair of magnetic pole;
1 or 2 pair of magnetic pole magnetic poles ring, pole ring ring set are in rotating shaft (4), and rotor protection cover (1) is enclosed within the outside of pole ring;
Permanent magnet (2) and heat carrier (3) cross section are fan-shaped;
N is 1～3;
M is 2～6;
It is characterized in that:
Described heat carrier (3) with the mating surface of rotating shaft (4) on, three fan-shaped projections vertically evenly distribute;
Described rotating shaft (4) scallop hole that evenly distributes vertically matches with fan-shaped projection on the heat carrier (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117459 CN102185401B (en) | 2011-05-09 | 2011-05-09 | High speed permanent magnet synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117459 CN102185401B (en) | 2011-05-09 | 2011-05-09 | High speed permanent magnet synchronous motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102185401A CN102185401A (en) | 2011-09-14 |
| CN102185401B true CN102185401B (en) | 2013-02-27 |
Family
ID=44571494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110117459 Expired - Fee Related CN102185401B (en) | 2011-05-09 | 2011-05-09 | High speed permanent magnet synchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102185401B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151862A (en) * | 2013-03-15 | 2013-06-12 | 西安交通大学 | High-speed permanent magnetic synchronous motor rotor structure |
| CN204258576U (en) * | 2014-10-13 | 2015-04-08 | 广东威灵电机制造有限公司 | Motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189001A (en) * | 1997-01-21 | 1998-07-29 | 株式会社五十铃硅酸盐研究所 | Structure of generator amature and manufacture method of said amature |
| SG165140A1 (en) * | 2000-01-27 | 2010-10-28 | Mitsubishi Materials Corp | Excavation equipment |
| CN201066816Y (en) * | 2007-08-14 | 2008-05-28 | 任奕彪 | Direct drive permanent magnetic AC brushless digital control electromotor for industrial sewer |
| CN101604876A (en) * | 2009-06-23 | 2009-12-16 | 哈尔滨理工大学 | Fan-cooled rotor in shaft of high-speed permanent magnet motor |
| CN201750235U (en) * | 2010-07-08 | 2011-02-16 | 李胜然 | Light modularization combined wind driven generator |
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2011
- 2011-05-09 CN CN 201110117459 patent/CN102185401B/en not_active Expired - Fee Related
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| CN102185401A (en) | 2011-09-14 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130227 Termination date: 20140509 |