CN201490790U - A Modular Pole Rotor Structure of High Power Permanent Magnet Synchronous Motor - Google Patents
A Modular Pole Rotor Structure of High Power Permanent Magnet Synchronous Motor Download PDFInfo
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- CN201490790U CN201490790U CN2009201401367U CN200920140136U CN201490790U CN 201490790 U CN201490790 U CN 201490790U CN 2009201401367 U CN2009201401367 U CN 2009201401367U CN 200920140136 U CN200920140136 U CN 200920140136U CN 201490790 U CN201490790 U CN 201490790U
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- permanent magnet
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Abstract
本实用新型提出了一种大功率永磁同步电机的模块式磁极转子结构，包括模块式磁极、转子支架和转轴，其中模块式磁极包括磁极铁心、永磁体、永磁体槽和极靴。转子的每个模块式磁极为一个单独整体，安装于转子支架的固定槽内，磁极之间的间隙为轴向通风道，极靴面向气隙的结构是优化的弧形结构。本实用新型的轴向通风道可以起到更好的通风冷却的效果，优化的弧形极靴结构使气隙磁密波形尽可能成正弦形分布，有利于减小电机的转矩脉动和谐波。另外，先对无磁性磁体进行安装，然后对整个模块式磁极进行充磁可以尽可能地缩短永磁体在磁体槽内与硅钢片之间的摩擦，减小对磁体镀层的破坏。此外，本实用新型的加工制造工艺可以实现简单方便组装、拆卸，易于大批量生产，特别适用于大功率永磁同步电机的制造。
The utility model proposes a modular magnetic pole rotor structure of a high-power permanent magnet synchronous motor, including a modular magnetic pole, a rotor bracket and a rotating shaft, wherein the modular magnetic pole includes a magnetic pole core, a permanent magnet, a permanent magnet slot and a pole shoe. Each modular magnetic pole of the rotor is an independent whole, installed in the fixed slot of the rotor bracket, the gap between the magnetic poles is an axial air passage, and the structure of the pole shoe facing the air gap is an optimized arc structure. The axial ventilation channel of the utility model can have a better effect of ventilation and cooling, and the optimized arc-shaped pole shoe structure makes the air-gap magnetic density waveform as sinusoidal as possible, which is beneficial to reduce the torque ripple of the motor and harmonize Wave. In addition, installing the non-magnetic magnet first, and then magnetizing the entire modular pole can shorten the friction between the permanent magnet in the magnet slot and the silicon steel sheet as much as possible, and reduce the damage to the magnet coating. In addition, the processing and manufacturing process of the utility model can realize simple and convenient assembly and disassembly, and is easy to produce in large quantities, and is especially suitable for the manufacture of high-power permanent magnet synchronous motors.
Description
Technical field
The utility model relates to a kind of modular magnetic pole rotor structure of high power permanent magnet synchronous motor, relates in particular to a kind of built-in type permanent-magnet rotor structure with axial ventilation road.
Technical background
Magneto has the characteristics of efficient and High Power Factor, and for permanent-magnetic wind driven generator, in order to reduce the degree electricity cost of wind power generation, wind-power market has strengthened the demand for high-power grade permanent-magnetic wind driven generator.Though magneto has higher efficient, along with the single-machine capacity of permanent magnet generator becomes increasing, the raising of air gap tangential force density, the loss of unit volume also increase thereupon, and this will cause the working temperature of each parts of motor higher relatively.For the design of high-power permanent magnet motor, require not only that the Electromagnetic Design parameter adheres to specification, reasonable in design, but also will have good ventilation cooling system.Because the permanent magnet of magneto is responsive especially to the relevant work temperature of its application scenario, higher working temperature might cause the reduction of permanent magnet magnetic performance, even under abominable working condition, may produce situations such as irreversible loss of excitation, thereby in the index of permanent process, need select rational ventilation cooling system and feasible process production techniques scheme for use, ensure the long-term stability and the safe and reliable operation of magneto.
Along with the increase of magneto power, the volume of single magnet also increases thereupon.Particularly high-power permanent magnet motor is in the application scenario of wind power generation, and on-the-spot environment for use is abominable relatively, temperature rise, and caloric value is big, particularly corrosion-resistant, the heat resistanceheat resistant loss of excitation of permanent magnetic material etc. is required particularly important.Because single magnet volume is bigger, magnetic attraction is stronger, causes magnetic pole assembling difficulty.Silicon steel sheet exists the unevenness degree problem when laminating, when between magnet and silicon steel sheet friction being arranged, the coating that surface anticorrosion is handled is drawn and bumped the probability increase, in case the top layer is destroyed, will directly influence the performance of magnet and the useful life of motor.
In general, the rotor structure of high-power permanent magnet motor is to be made of magnet, the punching of rotor full circle and rotor field spider etc.At present, for the design of high-power permanent magnet motor, based on to the consideration to influences such as permanent magnet performances of the protection of permanent magnet and armature reaction, adopt radial ducts, permanent magnet is built-in placement, multisection type rotor magnet structure more.Adopt the full circle punching as the rotor magnetic pole punching, magnetizing equipment is difficult in to be finished disposable integral to all magnets on the big pole lamination and magnetizes.Therefore, the installation method of magnet commonly used is: before magnet is installed, earlier magnet magnetized, and then in the magnet slot of the rotor punching of packing into, this magnetic magnet installation process complexity, and must use reliable and rational frock just might guarantee to finish smoothly the installation of magnet.In addition, magnet might produce and crashed or block problems such as magnet at the air duct place in push-on process.Thereby this kind rotor structure has the complexity and the irreversibility of mounting process, and in motor operation course, if a magnetic pole breaks down, will carry out demolition and replacement to whole rotor magnetic pole, brings inconvenience for follow-up maintenance work.
Summary of the invention
The technical problems to be solved in the utility model is the rotor ventilation cooling problem that exists at high power permanent magnet synchronous motor, magnet is anticorrosion and magnet mounting process complexity, be not easy to problems such as maintenance and dismounting, has proposed a kind of modular magnetic pole rotor structure and installation method of high power permanent magnet synchronous motor.
The technical scheme that the utility model proposes is: a kind of modular magnetic pole rotor structure of high power permanent magnet synchronous motor, comprise modular magnetic pole, rotor field spider and rotating shaft, and wherein the modular magnetic pole comprises pole core, permanent magnet, permanent magnet trough and pole shoe.Pole core is overrided to form by the convex pole lamination, and permanent magnet is positioned at permanent magnet trough, and permanent magnet has the pole shoe protection outward.The cylindrical of rotor field spider has holddown groove, and holddown groove is vertically and is evenly arranged evenly on rotor field spider along circumference.Each module type magnetic of rotor is an independent integral body very, is installed in the holddown groove of rotor field spider, and the gap between the magnetic pole is the axial ventilation road, and wedge is positioned at pole lamination and rotor field spider holddown groove, and pole-shoe face is the arcuate structure of optimizing to the structure of air gap.The holddown groove that uses that is connected between modular magnetic pole and the rotor field spider can be dovetail slot or T type groove.
During installation: at first, the convex pole lamination is laminated into pole core, in (forever) magnet slot of more longitudinally will (forever) magnet packing into, by the method for vacuum paint dipping or injecting glue the assemblage gap of (forever) magnet is filled, thereby permanent magnet is locked onto the relevant position; Then, whole modular magnetic pole is magnetized; Afterwards, adopt to import and press-fitting tool imports the modular magnetic pole in the holddown groove of rotor field spider, and the gap between adjacent two magnetic poles squeezes into wedge, thereby rotor field spider and modular magnetic pole are fixed into a unified integral body.
The beneficial effects of the utility model are:
The first, utilized the design feature of salient-pole synchronous generator rotor magnetic pole, make that the gap between per two magnetic poles forms the axial ventilation road.The axial ventilation road when stoping the leakage flux effect, thereby and the effect that plays the cooling of ventilating replaced the radial ducts and the multisection type rotor structure of conventional high-power permanent magnet motor, simplified the field structure of motor.
The second, the pole-shoe face of modular magnetic pole is an arc to the structure of air gap, and the pole shoe structure of optimization makes the air gap flux density waveform become sinusoid to distribute as far as possible, helps reducing the torque pulsation and the harmonic wave of motor.
The 3rd, adopt this kind module type magnetic electrode structure can realize earlier nonmagnetic magnet being installed, then whole modular magnetic pole is magnetized.Because the punching unevenness degree when there is burr in the pole core silicon steel sheet and laminates, adopt this installation method can shorten the friction of permanent magnet in magnet slot and between the silicon steel sheet as much as possible, reduce destruction, thereby increase the corrosion resistance of permanent magnet magnet coating.
The 4th, process for machining and manufacturing can be realized simple and convenient assembling, is suitable for production in enormous quantities, is specially adapted to the manufacturing of high power permanent magnet synchronous motor.
Below in conjunction with accompanying drawing most preferred embodiment is elaborated.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is a module type magnetic electrode structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, execution mode of the present utility model is done an explanation:
As shown in Figure 1 and Figure 2, a kind of modular magnetic pole rotor structure of high power permanent magnet synchronous motor comprises modular magnetic pole 1, rotor field spider 2 and rotating shaft 3.Wherein modular magnetic pole 1 comprises pole core 6, permanent magnet 7, permanent magnet trough 8 and pole shoe 9.Pole core 6 is overrided to form by the convex pole lamination, has permanent magnet trough 5 in every utmost point punching, and permanent magnet 7 is installed in the permanent magnet trough 8, and pole shoe 9 protections are arranged outside the permanent magnet 7.The rotor field spider cylindrical has holddown groove 4, and holddown groove 4 is vertically and is evenly arranged evenly on rotor field spider 2 along circumference.Each modular magnetic pole 1 is an integral body separately, is positioned at the holddown groove 4 of rotor field spider.Gap between per two magnetic poles is axial ventilation road 5, and pole shoe 9 is the arcuate structure of optimizing towards the structure of air gap.
During installation, at first the convex pole lamination is laminated into pole core 6, in the permanent magnet trough 8 of longitudinally magnet 7 being packed into again, and the method for vacuum paint dipping or injecting glue is filled the assemblage gap of (forever) magnet; Then whole modular magnetic pole 1 is magnetized, adopt importing and press-fitting tool modular magnetic pole 1 to be installed in the holddown groove 4 of rotor field spider 2 outsides again, gap between the two magnetic pole persons is filled by wedge 10, thereby rotor field spider and modular magnetic pole are fixed into a unified integral body.
Claims (5)
1. the modular magnetic pole rotor structure of a high power permanent magnet synchronous motor, comprise modular magnetic pole, rotor field spider and rotating shaft, wherein the modular magnetic pole comprises pole core, permanent magnet, permanent magnet trough and pole shoe, the gap that it is characterized by between two magnetic poles is the axial ventilation road, and pole-shoe face is the arcuate structure of optimizing to the structure of air gap.
2. the modular magnetic pole rotor structure of a kind of high power permanent magnet synchronous motor as claimed in claim 1, it is characterized by in the gap of adjacent two magnetic poles has wedge.
3. the modular magnetic pole rotor structure of a kind of high power permanent magnet synchronous motor as claimed in claim 1 or 2, it is characterized by described pole core is the convex pole lamination that laminates.
4. the modular magnetic pole rotor structure of a kind of high power permanent magnet synchronous motor as claimed in claim 1 or 2 is characterized by the modular magnetic pole and is dovetail slot with the holddown groove that uses that is connected between the rotor field spider.
5. the modular magnetic pole rotor structure of a kind of high power permanent magnet synchronous motor as claimed in claim 1 or 2 is characterized by the modular magnetic pole and is T type groove with the holddown groove that uses that is connected between the rotor field spider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201401367U CN201490790U (en) | 2009-05-06 | 2009-05-06 | A Modular Pole Rotor Structure of High Power Permanent Magnet Synchronous Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201401367U CN201490790U (en) | 2009-05-06 | 2009-05-06 | A Modular Pole Rotor Structure of High Power Permanent Magnet Synchronous Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490790U true CN201490790U (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201401367U Expired - Lifetime CN201490790U (en) | 2009-05-06 | 2009-05-06 | A Modular Pole Rotor Structure of High Power Permanent Magnet Synchronous Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490790U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103378664A (en) * | 2012-04-17 | 2013-10-30 | 西门子公司 | Pole shoe arrangement for a machine element of an electrical machine |
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN111600405A (en) * | 2019-02-21 | 2020-08-28 | 北京金风科创风电设备有限公司 | Magnetic pole module, rotor, rotor assembly method and motor |
-
2009
- 2009-05-06 CN CN2009201401367U patent/CN201490790U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103378664A (en) * | 2012-04-17 | 2013-10-30 | 西门子公司 | Pole shoe arrangement for a machine element of an electrical machine |
| CN103378664B (en) * | 2012-04-17 | 2017-08-25 | 西门子公司 | Pole shoe structure for the machine parts of motor |
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN111600405A (en) * | 2019-02-21 | 2020-08-28 | 北京金风科创风电设备有限公司 | Magnetic pole module, rotor, rotor assembly method and motor |
| CN111600405B (en) * | 2019-02-21 | 2023-09-22 | 北京金风科创风电设备有限公司 | Magnetic pole module, rotor, assembling method of rotor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING GOLDWIND SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XINJIANG JINFENG TECHNOLOGY CO., LTD. Effective date: 20100825 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 830026 NO.107, SHANGHAI ROAD, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, URUMQI CITY, XINJIANG UYGHUR AUTONOMOUS REGION TO: 100176 NO.19, KANGDING STREET, BEIJING ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100825 Address after: 100176 Beijing economic and Technological Development Zone, Kangding street, No. 19, No. Patentee after: Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd Address before: 830026 Urumqi economic and Technological Development Zone, Shanghai Road, No. 107, No. Patentee before: Xinjiang Jinfeng Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |