CN1233876A - Brushless DC electric lift motor structure having rare-earth permanent-manget - Google Patents
Brushless DC electric lift motor structure having rare-earth permanent-manget Download PDFInfo
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- CN1233876A CN1233876A CN 98113039 CN98113039A CN1233876A CN 1233876 A CN1233876 A CN 1233876A CN 98113039 CN98113039 CN 98113039 CN 98113039 A CN98113039 A CN 98113039A CN 1233876 A CN1233876 A CN 1233876A
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- armature reaction
- earth permanent
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The characteristic is to equip an antiquadrature axis armature reaction trough in the magnetic pole center of radial excitation structure and to use long screw bolts which are several times more than the number of magnetic poles to fasten fan end plates at two sides of motor rotor. It not only improves the magnetic field aberration produced by motor quadrature-axis armature reaction but also the insufficient motor rotor strength caused by antiquadrature-axis armature reaction trough. The antiquadrature-axis armature reaction trough fit at magnetic pole center improves the torque undulation of motor output obviously and reduces working noise.
Description
The present invention relates to a kind of elevator rare earth special permanent magnet brushless DC motor structure.
At present, the use rare-earth permanent-magnet electric machine succeeded in developing of the whole world has two classes as the technology of vertical lift elevator dragging motor: first rare earth permanent magnet ac synchronous motor; It two is rare earth permanent magnet brushless direct current motors.No matter be any rare-earth permanent-magnet electric machine, comparing with traditional AC induction motor all has the advantage of a lot of uniquenesses, for example, energy-efficient, volume is small and exquisite, it is comfortable to operate steadily, precise control, security reliability height.These advantages are impelled rare-earth permanent-magnet electric machine to drag in the field in the elevator special use to be developed rapidly.Undoubtedly, rare-earth permanent-magnet electric machine brings new vitality will for the development of elevator technology, and consequent economic results in society also will be huge.Introduction of the present invention be second type of rare earth permanent magnet elevator motor, promptly rare permanent magnet brushless dc ladder motor of going up relates to a kind of special construction that is applicable to that elevator uses.
Rare earth permanent magnet brushless direct current motor is applied to elevator and drags, and can not will solve the difficult problem of this armature reaction inhibition technology with avoiding, and is little in the hope of reaching the motor output torque fluctuation, and the technical indicator that running noises is little is not only steady but also quiet when making elevator work.Hence one can see that, and armature reaction inhibition technology is that can rare earth permanent magnet brushless direct current motor successfully be applied to one of key technology that elevator drags.
The objective of the invention is to propose a kind of special motor magnetic circuit structure, suppress the quadrature axis component in the armature reaction effectively, weaken the distortion of field.
The present invention is directed to the radially motor magnetic circuit characteristics of excitation mode, proposition solves the distortion of field that quadrature axis armature reaction causes in the mode (showing as Fig. 2) that pole center is provided with anti-quadrature axis armature reaction groove, Distribution of Magnetic Field (showing) when improving the motor operation effectively as Fig. 3, and then realize the steady and noise reduction of motor output torque.
In order to improve the assembly technology problem in the motor production, there is anti-this fact of quadrature axis armature reaction groove in the present invention in conjunction with pole center, adopt multiple in the stay bolt of magnetic pole number with the fastening method (showing) of rotor both sides fan end plate as Fig. 1, promptly having solved rotor influences the problem of rotor intensity because of anti-quadrature axis armature reaction groove, also add for rotor verification dynamic balancing provides simultaneously, loss of weight amount point, kill two birds with one stone.
Fig. 1 is a rotor assembly structure figure of the present invention.
Fan end plate 1,9, fastening bolt, nut, insulation cushion 2,3,4, rare earth permanent magnet magnet 5, non-magnet material lining 6, motor shaft 7, motor rotor punching sheet 8.
Fig. 2 is a motor rotor construction schematic diagram of the present invention.
Motor rotor punching sheet 1, rare earth permanent magnet magnet 2, anti-quadrature axis armature reaction groove 3, fastening bolt 4, non-magnet material lining 5, motor shaft 6.
Fig. 3 is that motor-field of the present invention is improved the effect schematic diagram.
Distribution of Magnetic Field profile 1 when not adding the anti-quadrature axis armature reaction groove of pole center, the Distribution of Magnetic Field profile 2 when increasing the anti-quadrature axis armature reaction groove of pole center.
The embodiment of the invention is the elevator rare earth special permanent-magnet brushless DC electric machine that a power is 18.5kW, and maximum speed is 1500 rev/mins, and speed ratio is 1: 1500.After being applied to elevator, the torque ripple amount that motor when operation armature reaction causes less than 3%, noise level reached 62dB (A), satisfied the requirement of elevator to its dragging system fully, now dropped into batch process.
The present invention improves performance index for rare earth permanent magnet brushless direct current motor and has tangible applicability, the special use occasion that higher torque fluctuation requirement and noise requirements are arranged had practicality, by this inventive principle, motor can manufacture the structure of various magnetic pole numbers easily, as 4 utmost points, 6 utmost points, 8 utmost points or the like.
Claims (2)
1. brushless DC electric lift motor structure having rare-earth permanent-manget is characterized in that at the pole center of excitatory structure radially an anti-quadrature axis armature reaction groove being set, and adopts multiple fastening with rotor both sides fan end plate in the stay bolt of magnetic pole number.
2. brushless DC electric lift motor structure having rare-earth permanent-manget according to claim 1, the flute profile of anti-quadrature axis armature reaction groove that it is characterized in that motor rotor punching sheet is with to put the flute profile physical dimension of rare-earth permanent magnet close, both are close apart from the axle center range distribution, this groove can opening on the rotor surface according to actual needs, also can seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113039 CN1233876A (en) | 1998-12-09 | 1998-12-09 | Brushless DC electric lift motor structure having rare-earth permanent-manget |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113039 CN1233876A (en) | 1998-12-09 | 1998-12-09 | Brushless DC electric lift motor structure having rare-earth permanent-manget |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1233876A true CN1233876A (en) | 1999-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98113039 Pending CN1233876A (en) | 1998-12-09 | 1998-12-09 | Brushless DC electric lift motor structure having rare-earth permanent-manget |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233876A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004091071A1 (en) * | 2003-04-09 | 2004-10-21 | Zhengfeng Zhu | Permanent magnetic bias magnetic type reluctance motor |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| CN104426314A (en) * | 2013-08-29 | 2015-03-18 | 株式会社日立产机*** | Permanent magnet rotary electric machine and elevator provided with same |
| CN105281521A (en) * | 2015-03-04 | 2016-01-27 | 江苏王牌电机制造有限公司 | Wide-speed-range direct-axis field enhanced type permanent magnet brushless motor for vehicle and division magnetic field regulating control thereof |
| CN105896772A (en) * | 2016-05-05 | 2016-08-24 | 华中科技大学 | Rotor core of magnetic-flux variable permanent magnet synchronous motor |
-
1998
- 1998-12-09 CN CN 98113039 patent/CN1233876A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004091071A1 (en) * | 2003-04-09 | 2004-10-21 | Zhengfeng Zhu | Permanent magnetic bias magnetic type reluctance motor |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| CN101944788B (en) * | 2010-07-06 | 2013-03-13 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| CN104426314A (en) * | 2013-08-29 | 2015-03-18 | 株式会社日立产机*** | Permanent magnet rotary electric machine and elevator provided with same |
| CN104426314B (en) * | 2013-08-29 | 2017-09-29 | 株式会社日立产机*** | Rotary type permanent-magnet motor and use its elevator gear |
| CN105281521A (en) * | 2015-03-04 | 2016-01-27 | 江苏王牌电机制造有限公司 | Wide-speed-range direct-axis field enhanced type permanent magnet brushless motor for vehicle and division magnetic field regulating control thereof |
| CN105281521B (en) * | 2015-03-04 | 2017-11-14 | 江苏王牌电机制造有限公司 | Automobile-used wide range speed control d-axis magnetic-field-enhanced permanent-magnetic brushless electric machine and its subregion adjustable magnetic control |
| CN105896772A (en) * | 2016-05-05 | 2016-08-24 | 华中科技大学 | Rotor core of magnetic-flux variable permanent magnet synchronous motor |
| CN105896772B (en) * | 2016-05-05 | 2019-01-04 | 华中科技大学 | A kind of rotor core becoming flux permanent magnet synchronous motor |
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Addressee: Sun Dequan Document name: Notice of first review |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |