CN104767337A - Permanent-magnet synchronous traction motor for motor train - Google Patents
Permanent-magnet synchronous traction motor for motor train Download PDFInfo
- Publication number
- CN104767337A CN104767337A CN201510199233.3A CN201510199233A CN104767337A CN 104767337 A CN104767337 A CN 104767337A CN 201510199233 A CN201510199233 A CN 201510199233A CN 104767337 A CN104767337 A CN 104767337A
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- Prior art keywords
- motor
- rotor
- permanent magnet
- magnet synchronous
- permanent
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention relates to a motor, in particular to a permanent-magnet synchronous traction motor for a motor train. The permanent-magnet synchronous traction motor for the motor train solves the problem that an existing permanent-magnet synchronous motor is not suitable for being directly used as a permanent-magnet synchronous traction motor for a motor train due to structure defects. The motor adopts a novel rotor magnetic circuit structure punching plate, a high-integration compact type rotor structure, a detachable connecting box structure and a lead structure. A connecting box can be conveniently disassembled so that the motor can be installed easily. A U-shaped magnetic circuit permanent magnet structure of an inner rotor is adopted, the magnetic separation bridge and circular bead design is added, and therefore the start and overload capacity of the motor can be improved. A rotor pressing ring at the driving end integrates rotor core pressing, permanent magnet end face pressing, rotor dynamic balancing and an inner seal ring labyrinth seal structure into a whole, the advantages that the structure is compact, the axial occupied space is small, and the installation is convenient are achieved, and the motor can be widely applied in the field of locomotive trains. According to the research, development and the operation of the permanent-magnet synchronous traction motor for the motor train, realistic bases are supplied for the permanent-magnet motor to research and develop a permanent-magnet traction motor structure with higher power, higher rotation speed and higher power density.
Description
Technical field
The present invention relates to motor, be specially motor-car permanent magnet synchronous traction motor.
Background technology
Along with railway locomotive traction technique is by the transformation of DC Transmission to AC Drive, to come to an end to system compact, light-weighted requirement, from now on the basis of deepening miniaturization and technology, will towards high efficiency, low noise, low running costization development.Magneto drive system is more and more subject to the favor of user with energy-efficient, low noise, low maintenance, and the permanent magnet transmission system that exploitation is applicable to becomes rail traction technological development direction from now on.
The load of motor-car traction motor is a wider variable load, under this variable load occasion, requires can export high efficiency and High Power Factor under full load and underloaded various operating mode.And permanent magnet synchronous motor all having greater efficiency and power factor in 20% ~ 120% rated load ranges, make, during light running, there is significant energy-saving effect.Therefore permanent magnet transmission system is particularly suitable for the instructions for use of motor-car drive motors.But existing permanent magnet synchronous motor is due to reasons in structure, and be not suitable for directly as motor-car permanent magnet synchronous traction motor.
Accompanying drawing 1-4 is the structural representation of existing permanent magnet synchronous motor; Wherein, Fig. 1 is overall structure schematic diagram, and Fig. 2 is rotor punching structure schematic diagram, and Fig. 3 is junction box structure schematic diagram, and Fig. 4 is rotor structure schematic diagram.Its design feature is as follows:
A) the rotor punching magnetic structure of existing permanent magnet synchronous motor generally adopts V-type magnetic circuit (two magnet steel grooves of V-shaped distribution form a magnetic pole), magnet steel groove two ends seamlessly transit substantially, does not design every magnetic bridge hole without under obvious fillet design, every pole magnet steel groove.
B) existing terminal box generally adopts with support monoblock cast or welds, and becomes an entirety; Triple line enters terminal box respectively, insulate with rubber sleeve and support wall.Draw from terminal box respectively again, use cable joint fixing seal.
C) the rotor structure two ends of existing magneto compress rotor core by circular trim ring 8, need install permanent magnet baffle plate 10, permanent magnet baffle plate trim ring 9, balancing frame and internal sealed ring 7 successively, finally form rotor after permanent magnet assembling in both sides.
There is following shortcoming in existing permanent magnet synchronous motor:
A. its rotor magnetic circuit structural cause the startup of motor and speed adjusting performance poor, the magnetic flux often provided extremely is down limited, causes power of motor density little, permanent merit narrow range; Rotor magnetic steel groove edge stress is concentrated, and easily cause punching intensity local poor, punching damages; Rotor leakage coefficient is large simultaneously, and in air gap, harmonic content is high, and magnet steel utilance is low, causes capacity motor little.
B. its terminal box and support one, take up room large, in the confined space, can not better increase lead riser electric clearance; Terminal box cannot be dismantled simultaneously, easily collides with, installation difficulty is increased when motor is installed on locomotive.
C. its rotor pressing ring and contact area unshakable in one's determination little, easily cause tooth to rise; More the causing of axial installing component axially takes up room greatly, and manufacturing cost is high.
Summary of the invention
The present invention solves existing permanent magnet synchronous motor and is not suitable for the direct problem as motor-car permanent magnet synchronous traction motor due to fault of construction, provides a kind of motor-car permanent magnet synchronous traction motor.
The present invention adopts following technical scheme to realize: motor-car permanent magnet synchronous traction motor, comprises top and has the support of air inlet, stator core and stator coil, rotor assembling, terminal box; Rotor assembling comprises rotating shaft, the rotor core be overrided to form by rotor punching, rotor pressing ring, permanent magnet baffle plate, rotor punching has magnet steel groove, ventilation hole, is inserted with magnet steel in magnet steel groove; The rotor pressing ring of rotor assembling driving end has the rotor dynamic balancing groove of ring-type and is provided with internal sealed ring labyrinth seal structure, and the permanent magnet baffle plate of rotor assembling driving end to be placed in rotating shaft and to be compressed by rotor pressing ring.Rotor assembling driving end adopts and is highly integrated with rotor core compression, permanent magnet baffle plate compression, rotor dynamic balancing groove, internal sealed ring labyrinth seal structure in the rotor pressing ring of one, this structure has that integrated level is high, compact conformation, axially to take up room the advantage such as little, easy for installation, is particularly suitable for the extra high motor train unit motor of volume weight requirement.
Further, rotor punching is U-shaped magnetic structure, and three magnet steel grooves of the distribution that namely takes the shape of the letter U form a magnetic pole; In the scope that under each magnetic pole, namely three magnet steel grooves taking the shape of the letter U distribution enclose, have two every magnetic bridge hole, two inner side and rotor punching outer rims laying respectively at the both sides magnet steel groove (three the magnet steel grooves forming each magnetic pole be divided into both sides with centre) of each magnetic pole every magnetic bridge hole; Rotor punching and rotating shaft adopt interference fit; Magnet steel and rotor punching matched in clearance, gap, every section of magnet steel two ends adopts silicon rubber embedding.Adopt U-shaped magnetic circuit permanent-magnet structure, optimize magnetic circuit, improve startup and the overload capacity of motor, effectively reduce rotor weight, add electric efficiency and capacity.Increasing under each magnetic pole every magnetic bridge hole, not affecting under punching strength conditions, can leakage field be reduced, increase magnet steel utilance, improve capacity motor.Punching and rotating shaft adopt interference fit, while ensure that motor reliability, simplify rotor and laminate technique, reduce cost and manufacturing cycle.Gap, every section of magnet steel two ends adopts silicon rubber embedding, not only play the effect being completely fixed permanent magnet, and the elastomer after solidification can reduce magnet steel when motor runs and to withstand shocks vibration, guarantee effective sealing reliably and with long-term, serves good conductive force simultaneously.
Terminal box is removably connected on support, and the binding post in terminal box is slant arrangements; The three-phase lead-out wire of stator coil is drawn from the air inlet at support top and introduces terminal box; Insulation fixing plate for the three-phase lead-out wire of fixed stator coils and insulation line card is fixed with, with the colligation of insulated binding line between the three-phase lead-out wire of stator coil and insulation fixing plate in the air inlet at support top.Three-phase lead-out wire is introduced in support air inlet from stator core, and fixedly makes wiring specification with insulation fixing plate, insulation line card etc., effectively utilizes motor internal space, facilitates cable distribution fixing with installation.Terminal box is demountable structure, reduces the installation difficulty of motor on locomotive, eliminates the interference in terminal box position in motor and locomotive installation process.Binding post adopts slant arrangements design at junction box, increases the electric clearance between binding post when terminal box limited space.Increase the mutual distance of cable sealed joint, for the use of large scale seal nipple provides the useful space simultaneously.
For motor-car traction field, the invention provides the permanent magnetism traction motor of a kind of high efficiency, high power density, High Power Factor.This motor have employed the punching of a kind of novel rotor magnetic structure, the compact rotor structure that a kind of integrated level is high and detachably junction box structure and pin configuration.The present invention has following outstanding technique effect: 1) terminal box can be for convenience detach, and motor is easily installed.Lead-out wire wiring is integrated with support air inlet, can reduce motor and take up room, and reduces manufacturing cost.Binding post adopts oblique line or rounded projections arranged at terminal box installed surface, increases electric clearance between binding post and the mutual distance of cable sealed joint, facilitates wiring simultaneously.For the use of large scale seal nipple provides the useful space.Whole junction box structure is simple and practical, can meet all design of electrical motor needs, be widely used.2) adopt internal rotor U-shaped magnetic circuit permanent-magnet structure, increase every magnetic bridge and fillet design, improve startup and the overload capacity of motor, add electric efficiency and capacity.Be significantly increased in the anti-degaussing ability of motor, power density and magnet steel utilance, the performance of motor, reliability and life-span are increased, and cost lowers simultaneously.Embody that permanent magnet motor structure is simple, volume is little, lightweight, loss is little, efficiency advantages of higher to the full extent.3) rotor structure of the present invention has higher integrated level, driving end rotor pressing ring integrates rotor core compression, permanent magnet end compression, rotor dynamic balancing, internal sealed ring labyrinth seal structure, compact conformation, axially to take up room the advantage such as little, easy for installation, can be widely used in locomotive motor-car field, especially when higher to space requirement, advantage is remarkable.4) contrasting this permanent magnet synchronous motor all there is greater efficiency and power factor in 20% ~ 120% rated load ranges with asynchronous machine, when light running, there is significant energy-saving effect.Adopt permanent magnet transmission system, overall efficiency improvement reaches about 3%, if consume the circuit of 30000 degree of electricity, can save the electricity of about 1000 degree, remarkable in economical benefits.5) research and development of the present invention and operation, be more high-power, the higher rotating speed of magneto research and development, more the permanent magnet traction motor structure of high power density provides realistic basis.
Accompanying drawing explanation
Fig. 1 is existing permanent magnet synchronous motor overall structure schematic diagram;
Fig. 2 is existing permanent-magnet synchronous motor rotor lamination structure schematic diagram;
Fig. 3 is existing permanent magnet synchronous motor junction box structure schematic diagram;
Fig. 4 is existing rotor structure of permanent-magnet synchronous schematic diagram;
Fig. 5 is motor-car permanent magnet synchronous traction motor overall structure schematic diagram of the present invention;
Fig. 6 is motor-car permanent magnet synchronous traction motor rotor assembly structure schematic diagram of the present invention;
Fig. 7 is motor-car permanent magnet synchronous traction motor rotor punching structure schematic diagram of the present invention;
Fig. 8 is motor-car permanent magnet synchronous traction motor terminal box of the present invention and leading-out wire structure schematic diagram (support is wherein the vertical view of Fig. 5 support).
In figure: 1-rotating shaft, 2-driving end end cap, 3-bearing, 4-stator core, 5-bearing, 6-non-transmision end end cap, 7-balancing frame and internal sealed ring, 8-rotor pressing ring, 9-permanent magnet baffle plate trim ring, 10-permanent magnet baffle plate, 11-rotor core, 12-magnet steel, 13-fillet, 14-magnet steel groove, 15-is every magnetic bridge hole, 16-air inlet, 17-insulation fixing plate, 18-binding post, 19-terminal box, 20-insulated binding line, 21-insulate line card.
Embodiment
Motor-car permanent magnet synchronous traction motor, comprises top and has the support of air inlet 16, stator core 4 and stator coil, rotor assembling, terminal box 19; Rotor assembling comprises rotating shaft 1, the rotor core 11 be overrided to form by rotor punching, rotor pressing ring 8, permanent magnet baffle plate 10, rotor punching has magnet steel groove 14, ventilation hole, is inserted with magnet steel 12 in magnet steel groove; The rotor pressing ring 8 of rotor assembling driving end has the rotor dynamic balancing groove of ring-type and is provided with internal sealed ring labyrinth seal structure, and the permanent magnet baffle plate 10 of rotor assembling driving end to be placed in rotating shaft and to be compressed by rotor pressing ring 8.Rotor punching is U-shaped magnetic structure, and three magnet steel grooves of the distribution that namely takes the shape of the letter U form a magnetic pole; In the scope that under each magnetic pole, namely three magnet steel grooves taking the shape of the letter U distribution enclose, have two lay respectively at the both sides magnet steel groove (three the magnet steel grooves forming each magnetic pole be divided into both sides with centre) of each magnetic pole every magnetic bridge hole inner side and rotor punching outer rim every 15, two, magnetic bridge hole; Rotor punching and rotating shaft 1 adopt interference fit; Magnet steel 12 and rotor punching matched in clearance, gap, every section of magnet steel two ends (gap namely and between magnet steel groove) adopts silicon rubber embedding.Terminal box 19 is removably connected on support, and the binding post 18 in terminal box 19 is slant arrangements; The three-phase lead-out wire of stator coil is drawn from the air inlet 16 at support top and introduces terminal box 19; Insulation fixing plate 17 for the three-phase lead-out wire of fixed stator coils and insulation line card 21 is fixed with, with the colligation of insulated binding line 20 between the three-phase lead-out wire of stator coil and insulation fixing plate 17 in the air inlet at support top.
During concrete enforcement, magnet steel groove 14 two ends offer the fillet 13 for eliminating stress concentrated.Fillet design eliminates magnet steel groove edge stress concentration problem, increases motor stamping local strength.As long as understand that the object of fillet design eliminates stress concentrated, the particular location of fillet at magnet steel groove two ends and the concrete shape of fillet, known or easy design obtains to those skilled in the art.Ventilation hole is all opened under magnetic pole.Ventilation hole under each magnetic pole is five.Described every magnetic bridge hole 15 be kidney-shaped, to improve the effect that it reduces leakage field further.Rotor punching adopts the thick silicon steel sheet of 0.5mm to make.Magnet steel 12 adopts the rare-earth permanent magnet of elevated operating temperature, high energy product.
Claims (9)
1. a motor-car permanent magnet synchronous traction motor, comprises top and has the support of air inlet (16), stator core (4) and stator coil, rotor assembling, terminal box (19); Rotor assembling comprises rotating shaft (1), the rotor core (11) be overrided to form by rotor punching, rotor pressing ring (8), permanent magnet baffle plate (10), rotor punching has magnet steel groove (14), ventilation hole, is inserted with magnet steel (12) in magnet steel groove; The rotor pressing ring (8) that it is characterized in that rotor assembling driving end has the rotor dynamic balancing groove of ring-type and is provided with internal sealed ring labyrinth seal structure, and the permanent magnet baffle plate (10) of rotor assembling driving end to be placed in rotating shaft and to be compressed by rotor pressing ring (8).
2. motor-car permanent magnet synchronous traction motor according to claim 1, is characterized in that rotor punching is U-shaped magnetic structure, and three magnet steel grooves of the distribution that namely takes the shape of the letter U form a magnetic pole; In the scope that under each magnetic pole, namely three magnet steel grooves taking the shape of the letter U distribution enclose, have two every magnetic bridge hole (15), two inner side and rotor punching outer rims laying respectively at the both sides magnet steel groove of each magnetic pole every magnetic bridge hole.
3. motor-car permanent magnet synchronous traction motor according to claim 2, is characterized in that rotor punching and rotating shaft (1) adopt interference fit; Magnet steel (12) and rotor punching matched in clearance, gap, every section of magnet steel two ends adopts silicon rubber embedding.
4. the motor-car permanent magnet synchronous traction motor according to claim 1 or 2 or 3, is characterized in that terminal box (19) is removably connected on support, and the binding post (18) in terminal box (19) is slant arrangements; The three-phase lead-out wire of stator coil is drawn from the air inlet (16) at support top and introduces terminal box (19); Insulation fixing plate (17) for the three-phase lead-out wire of fixed stator coils and insulation line card (21) is fixed with, use insulated binding line (20) colligation between the three-phase lead-out wire of stator coil and insulation fixing plate (17) in the air inlet at support top.
5. the motor-car permanent magnet synchronous traction motor according to claim 1 or 2 or 3, is characterized in that magnet steel groove (14) two ends offer the fillet (13) for eliminating stress concentrated.
6. motor-car permanent magnet synchronous traction motor according to claim 4, is characterized in that magnet steel groove (14) two ends offer the fillet (13) for eliminating stress concentrated.
7. the motor-car permanent magnet synchronous traction motor according to claim 1 or 2 or 3, it is characterized in that ventilation hole is all opened under magnetic pole, the ventilation hole under each magnetic pole is five.
8. motor-car permanent magnet synchronous traction motor according to claim 2, is characterized in that every magnetic bridge hole (15) be kidney-shaped.
9. the motor-car permanent magnet synchronous traction motor according to claim 1 or 2 or 3, it is characterized in that rotor punching adopts the thick silicon steel sheet of 0.5mm to make, magnet steel (12) adopts the rare-earth permanent magnet of elevated operating temperature, high energy product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510199233.3A CN104767337B (en) | 2015-04-24 | 2015-04-24 | Motor-car permanent magnet synchronous traction motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510199233.3A CN104767337B (en) | 2015-04-24 | 2015-04-24 | Motor-car permanent magnet synchronous traction motor |
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| CN104767337A true CN104767337A (en) | 2015-07-08 |
| CN104767337B CN104767337B (en) | 2017-08-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787326A (en) * | 2016-12-15 | 2017-05-31 | 南通金驰机电有限公司 | High-speed electric expreess locomotive based on high rigidity rotor structure |
| CN108808920A (en) * | 2018-08-18 | 2018-11-13 | 上海崇林汽车电子有限公司 | A kind of electric vehicle permanent magnet motor low magnetism leakage highly stressed rotor punching |
| CN109149824A (en) * | 2017-06-27 | 2019-01-04 | 中电电机股份有限公司 | A kind of permanent magnet machine rotor |
| CN110601485A (en) * | 2019-09-23 | 2019-12-20 | 上海电气集团上海电机厂有限公司 | Self-starting permanent magnet motor |
| FR3086119A1 (en) * | 2018-09-14 | 2020-03-20 | Valeo Equipements Electriques Moteur | ROTATING ELECTRIC MACHINE WITH REDUCED INERTIA ROTOR |
| CN113346704A (en) * | 2021-06-07 | 2021-09-03 | 银川威马电机有限责任公司 | Permanent magnet synchronous motor and high-power electric mine car using same |
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| CN204046362U (en) * | 2014-09-14 | 2014-12-24 | 哈尔滨理工大学 | The online rotation-speed measuring device of electric motor built-in |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787326A (en) * | 2016-12-15 | 2017-05-31 | 南通金驰机电有限公司 | High-speed electric expreess locomotive based on high rigidity rotor structure |
| CN109149824A (en) * | 2017-06-27 | 2019-01-04 | 中电电机股份有限公司 | A kind of permanent magnet machine rotor |
| CN108808920A (en) * | 2018-08-18 | 2018-11-13 | 上海崇林汽车电子有限公司 | A kind of electric vehicle permanent magnet motor low magnetism leakage highly stressed rotor punching |
| FR3086119A1 (en) * | 2018-09-14 | 2020-03-20 | Valeo Equipements Electriques Moteur | ROTATING ELECTRIC MACHINE WITH REDUCED INERTIA ROTOR |
| CN110601485A (en) * | 2019-09-23 | 2019-12-20 | 上海电气集团上海电机厂有限公司 | Self-starting permanent magnet motor |
| CN113346704A (en) * | 2021-06-07 | 2021-09-03 | 银川威马电机有限责任公司 | Permanent magnet synchronous motor and high-power electric mine car using same |
| CN113346704B (en) * | 2021-06-07 | 2023-06-02 | 银川威马电机有限责任公司 | Permanent magnet synchronous motor and high-power electric mine car using same |
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| CN104767337B (en) | 2017-08-25 |
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Address after: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee after: CRRC YONGJI ELECTRIC CO., LTD. Address before: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee before: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. |