CN201975280U - Operation mechanism of linear permanent magnet motor - Google Patents
Operation mechanism of linear permanent magnet motor Download PDFInfo
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- CN201975280U CN201975280U CN2011201171019U CN201120117101U CN201975280U CN 201975280 U CN201975280 U CN 201975280U CN 2011201171019 U CN2011201171019 U CN 2011201171019U CN 201120117101 U CN201120117101 U CN 201120117101U CN 201975280 U CN201975280 U CN 201975280U
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- iron core
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- mover
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Abstract
The utility model relates to an operation mechanism of a linear permanent magnet motor, which comprises a stator iron core, a rotor iron core, a driving rod, and permanent magnets, wherein the stator iron core is a box body; the rotor iron core is arranged in the stator iron core; the driving rod which is arranged on the two ends of the rotor iron core penetrates through an upper end shell body and a lower end shell body of the stator iron core and can move up and down; the permanent magnets are arranged on side walls of the stator iron core; the two adjacent permanent magnets which are respectively arranged at the upper part and the lower part have opposite polarities; the permanent magnets which are respectively arranged on the left side and the right side of the box body are the same polarity arrangement direction; stator salient poles of which the number is an integral multiple of a phase number are arranged between the two adjacent permanent magnets on an internal wall of the stator iron core; armature coils are arranged on the stator salient poles; rotor salient poles are arranged on an external wall of the rotor iron core; when the rotor iron core is located at the top, the stator salient poles which are arranged at the topmost end of the stator iron core are over against the rotor salient poles; and when the rotor iron core is located at the bottom, the stator salient poles which are arranged at the lowest end of the stator iron core are over against the rotor salient poles.
Description
Technical field
The utility model belongs to switchgear technical field in the electro-engineering, is specifically related to a kind of linear permanent-magnet motor operation mechanism.
Background technology
The operating mechanism of traditional primary cut-out configuration mainly contains hydraulic mechanism, pneumatic mechanism, spring mechanism and electromagnetic mechanism.Hydraulic operating mechanism has a series of advantages such as energy intensity is big, reaction speed is fast, noise is low, reliable in action, and pneumatic operating mechanism utilizes compressed air to produce thrust as the energy, does not need powerful DC power supply, does not also need to lay control cable.Pneumatic, hydraulic system can satisfy long stroke, powerful operational requirements, be mainly used in the higher primary cut-out of electric pressure, but system complex, reliability is not high enough, the hydraulic operating mechanism processing technology requires high, if make or assemble bad easy generation seepage oil, its speed characteristics are subject to the influence of ambient temperature, compressed-air actuated quality is to the reliability important influence of pneumatic operating mechanism work, and a denier air makes moist and can make piston and casing surface corrosion.Spring operating mechanism is to rely on the spring energy stored to discharge to make breaker closing, be not subjected to the influence of Changes in weather and change in voltage its operate time, guaranteed the reliability of combined floodgate performance, working stability and closing speed are very fast, but the power output characteristic cooperates relatively poor with the circuit breaker load characteristic, parts are many, and the manufacturing process complexity causes mechanical breakdown easily.Electromagnetic operating mechanism is simple in structure, and response speed is fast, but exists driving power bigger, and contact force is less and cause problem such as contact bounce when closing a floodgate easily.Primary cut-out operational requirements high-power, long stroke that spring and electromagnetic operating mechanism also can't satisfy is mainly used in the mesolow circuit breaker at present.
Yan Zhi permanent-magnet operating mechanism is to be provided by electronically controlled solenoid to close a floodgate or the required energy complete operation of separating brake, and utilizes the permanent magnet magnetic force of excellent performance to make switch remain on combined floodgate or separating brake position in recent years.Because simple in structure, amount of parts is few, reliability is high, operation lifetime is long, action dispersiveness is little, the load characteristic of power producing characteristics and vacuum interrupter is complementary etc., the permanent magnetic actuator vacuum circuit breaker technology has obtained development at full speed in recent years, now has been widely used on the vacuum circuit-breaker of 12kV, 24kV and 40.5kV electric pressure.Though permanent-magnet manipulating mechanism has obtained popularization in the vacuum circuit-breaker of middle low-voltage grade, but 72.5kV that produces and the above equal adapted traditional operation of high-pressure vacuum breaker mechanism do not see the application of relevant voltage levels permanent-magnet operating mechanism both at home and abroad as yet and report both at home and abroad.The high voltage vacuum interrupter clearance between open contacts is big, and the moving contact movement travel is long, needs higher separating brake and closing speed.For permanent-magnet operating mechanism, if the movement travel of armature is long, then need bigger operating work, this needs more jumbo energy storage capacitor and more powerful power electronic device.On structure, the separating brake of permanent-magnet operating mechanism and closing coil are placed in respectively near separating brake and the combined floodgate working gas gap.In the separating brake process, moving iron core is positioned at closing position at first, and separating brake side air-gap reluctance is big, and switching winding can not play a role effectively.When moving iron core moved to the separating brake position, the action effect of switching winding was the strongest, and the collision impact when moving iron core is closed is big.Making process is also like this.Movement travel is long more, and it is outstanding further that the pick-up current that this excitation mode brought increases, contact transfer time increases drawbacks such as the collision impact that reaches when moving the iron core closure is big.
At present, rise to national strategy along with building intelligent grid strong, high flexible, the reliability of raising vacuum circuit-breaker, the demand of controllability become more urgent.Therefore, reforming the operating mechanism of vacuum circuit-breaker, further improve the performance of permanent-magnet operating mechanism, promote the application of permanent-magnet operating mechanism in intelligent vacuum circuit-breaker, is an important goal of switch industry.
The utility model content
Technical problem:The utility model is shorter at traditional electromagnetism, spring and permanent magnet mechanism stroke, be difficult to satisfy the long stroke breaking-closing operating requirement of primary cut-out, the problem that reliable breaking-closing operating is difficult to guarantee, a kind of linear permanent-magnet motor operation mechanism of long stroke is provided, under the condition of the certain electromagnetism actuating force of output, satisfy the breaking-closing operating requirement of long stroke primary cut-out.
Technical scheme:Linear permanent-magnet motor operation of the present utility model mechanism, comprise stator core, mover iron core, drive rod, permanent magnet, described stator core is a casing, described mover iron core places stator core, and the drive rod that is arranged at mover iron core two ends passes stator core two ends housing and can moving up and down up and down, and the stator core sidewall is provided with permanent magnet, the polarity of two adjacent permanent magnets is relative up and down, and the permanent magnet polarity arranged direction of casing the right and left is identical; On the madial wall of stator core, be provided with the stator salient poles that quantity is the integral multiple of number of phases between the two adjacent permanent magnets, described stator salient poles is provided with armature coil; Mover iron core lateral wall is provided with the mover salient pole, when the mover iron core is in highest order, stator core topmost stator salient poles and the mover salient pole over against, when the mover iron core is in lowest order, stator core bottom stator salient poles and the mover salient pole over against.
The electromagnetic force that the utility model produces by armature coil realizes the motion of mover iron core, and when the mover iron core was in highest order or lowest order, the location torque that produces by permanent magnet was realized the location of mover iron core and spacing.
Armature coil of the present utility model is centralized armature coil.Described armature coil is composed in series the polyphase armature winding, about being specially two over against armature coil series connection be one group, when number of phases is three, the armature coil of each group series connection is connected with another group coil of two stator salient poles of being separated by, when number of phases was four, the armature coil of each group series connection was connected with another group coil of three stator salient poles of being separated by.
Described armature coil can be electrically connected with inverter, by inverter regulating winding electric current, thus control divide-shut brake speed.
Described stator core, mover iron core adopt permeability magnetic material to make, and drive rod adopts non-magnet material to make.
Beneficial effect:The utility model is arranged at permanent magnet and armature coil on the stator core simultaneously, place the mover iron core with traditional way as armature coil being placed stator core, permanent magnet, perhaps permanent magnet is placed stator core, armature coil to place the mover iron core to compare, the mover core structure is simple, firm, there are not permanent magnet, no winding, no slip ring on the mover, mover torque ratio of inertias is big, reaction is fast, is beneficial to quick acting switching-off and the arc extinguishing of realizing vacuum circuit-breaker.
Do not have permanent magnet on the mover iron core of the present utility model, reduced permanent magnet and impacted the risk that causes irreversible demagnetization, improve the reliability and the working life of operating mechanism because of motion.
Permanent magnet of the present utility model is positioned at the stator core sidewall, lays centralized armature coil on the stator salient poles, and a plurality of armature coils are formed the polyphase armature winding after connecting, thereby obtains output torque comparatively stably.
The heterogeneous biconvex electrode structure of the utility model permanent-magnetism linear motor has poly-magnetic effect, has increased the magnetic density of machine operation air gap, thereby has effectively improved the torque density of motor operation mechanism.
The utility model adopts centralized armature coil to reduce tip lengths, helps reducing armature resistance, improves the efficient of motor operation mechanism.
Armature coil of the present utility model can be electrically connected with inverter, can be according to the spring load characteristic of primary cut-out, by inverter regulating winding electric current, control the divide-shut brake speed characteristics targetedly, comprise the control of divide-shut brake end of a period stage deceleration, the control of quick branch just etc., thereby improve the controllability of primary cut-out.
Permanent-magnetism linear motor operating mechanism stroke of the present utility model is big, can satisfy the operating characteristic requirement of high-pressure vacuum breaker to the full extent, reaches closing rebound and minimizes, and improves the operating mechanism overall mechanical properties.
Description of drawings
Fig. 1 is a planar structure schematic diagram of the present utility model, and Fig. 2 is a three-dimensional structure diagram of the present utility model, and Fig. 3 is a closing position schematic diagram of the present utility model, and Fig. 4 is a separating brake position view of the present utility model.
Have among the figure: armature coil 1, permanent magnet 2, mover iron core 3, stator core 4, stator salient poles 5, mover salient pole 6, drive rod 7, stator core sidewall 9.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As seen from Figure 1, a kind of linear permanent-magnet motor operation mechanism, comprise stator core 4, mover iron core 3, drive rod 7, permanent magnet 2, described stator core 4 is a casing, described mover iron core 3 places stator core 4, the drive rod 7 that is arranged at mover iron core 3 two ends passes stator core 4 two ends housings and also can move up and down, stator core 4 sidewalls are provided with permanent magnet 2, and the polarity of two adjacent permanent magnets is relative up and down, and the polarity of the face that promptly neighbouring permanent magnet is relative is identical, as shown in fig. 1, the N of neighbouring permanent magnet is extremely to the N utmost point, and S is extremely to the S utmost point, and the permanent magnet polarity arranged direction of casing the right and left is identical.The polarity of permanent magnet can be shown in Figure 1 putting in order in the utility model, and promptly Zui Shangduan a permanent magnet N utmost point also can be put in order opposite with Fig. 1 upwards, and promptly the S utmost point makes progress, as long as the polarity of two adjacent permanent magnets relatively about satisfying.On the madial wall of stator core 4, being provided with quantity between the two adjacent permanent magnets is the stator salient poles 5 of the integral multiple of number of phases, described stator salient poles is provided with centralized armature coil 1, as shown in the figure, lay 12 centralized armature coils on 12 stator salient poles altogether, 4 coils of every phase are formed the threephase armature winding after connecting, be specially: about two over against armature coil series connection be one group, when number of phases is three, the armature coil of each group series connection is connected with another group coil of two stator salient poles of being separated by, when number of phases was four, the armature coil of each group series connection was connected with another group coil of three stator salient poles of being separated by.Mover iron core 3 lateral walls are provided with the mover salient pole, when the utility model is in closing position, the mover iron core is positioned at the top in stator core space, stator salient poles topmost and mover salient pole fully over against, the static confining force maximum that this moment, permanent magnet produced makes the mover iron core remain on closing position; When the utility model was in the separating brake position, the mover iron core was positioned at the stator core space bottom, stator salient poles bottom and mover salient pole fully over against, the static confining force maximum that this moment, permanent magnet produced makes the mover iron core remain on the separating brake position.
Claims (3)
1. linear permanent-magnet motor operation mechanism, it is characterized in that, this operating mechanism comprises stator core (4), mover iron core (3), drive rod (7), permanent magnet (2), described stator core (4) is a casing, described mover iron core (3) places stator core (4), the drive rod (7) that is arranged at mover iron core (3) two ends passes stator core (4) two ends housing and can moving up and down up and down, stator core (4) sidewall is provided with permanent magnet (2), the polarity of two adjacent permanent magnets is relative up and down, and the permanent magnet polarity arranged direction of casing the right and left is identical; On the madial wall of stator core (4), be provided with the stator salient poles that quantity is the integral multiple of number of phases (5) between the two adjacent permanent magnets, described stator salient poles is provided with armature coil (1); Mover iron core (3) lateral wall is provided with the mover salient pole, when the mover iron core is in highest order, stator core (4) topmost stator salient poles and the mover salient pole over against, when the mover iron core is in lowest order, stator core (4) bottom stator salient poles and the mover salient pole over against.
2. linear permanent-magnet motor operation according to claim 1 mechanism is characterized in that described armature coil is centralized armature coil, and described armature coil is composed in series the polyphase armature winding.
3. linear permanent-magnet motor operation according to claim 2 mechanism is characterized in that, described stator core (4), mover iron core (3) adopt permeability magnetic material to make, and drive rod (7) adopts non-magnet material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201171019U CN201975280U (en) | 2011-04-20 | 2011-04-20 | Operation mechanism of linear permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201171019U CN201975280U (en) | 2011-04-20 | 2011-04-20 | Operation mechanism of linear permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975280U true CN201975280U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201171019U Expired - Lifetime CN201975280U (en) | 2011-04-20 | 2011-04-20 | Operation mechanism of linear permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975280U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157310A (en) * | 2011-04-20 | 2011-08-17 | 东南大学 | Linear permanent magnet motor operating mechanism of high-voltage circuit breaker |
| CN103929041A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Magnetic levitation permanent magnet linear motor |
| CN105610262A (en) * | 2016-01-22 | 2016-05-25 | 山东理工大学 | Two-phase electro-magnetic doubly-salient power sunroof drive motor |
| CN106451990A (en) * | 2016-11-02 | 2017-02-22 | 深圳市兆业电子科技有限公司 | Permanent magnet linear motor and linear vibrator |
| CN107947522A (en) * | 2017-12-14 | 2018-04-20 | 南京工业大学 | Cylindrical double-salient-pole permanent magnet linear motor |
| CN111033669A (en) * | 2017-08-21 | 2020-04-17 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
-
2011
- 2011-04-20 CN CN2011201171019U patent/CN201975280U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157310A (en) * | 2011-04-20 | 2011-08-17 | 东南大学 | Linear permanent magnet motor operating mechanism of high-voltage circuit breaker |
| CN103929041A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Magnetic levitation permanent magnet linear motor |
| CN105610262A (en) * | 2016-01-22 | 2016-05-25 | 山东理工大学 | Two-phase electro-magnetic doubly-salient power sunroof drive motor |
| CN105610262B (en) * | 2016-01-22 | 2018-01-16 | 山东理工大学 | Two-phase electric excitation biconvex electrode power sunroof motor |
| CN106451990A (en) * | 2016-11-02 | 2017-02-22 | 深圳市兆业电子科技有限公司 | Permanent magnet linear motor and linear vibrator |
| CN111033669A (en) * | 2017-08-21 | 2020-04-17 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
| CN111033669B (en) * | 2017-08-21 | 2021-11-09 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
| CN107947522A (en) * | 2017-12-14 | 2018-04-20 | 南京工业大学 | Cylindrical double-salient-pole permanent magnet linear motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20130403 |
|
| RGAV | Abandon patent right to avoid regrant |