CN205945292U - PMSM rotor is utmost point structure to one side - Google Patents

PMSM rotor is utmost point structure to one side Download PDF

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Publication number
CN205945292U
CN205945292U CN201620910713.6U CN201620910713U CN205945292U CN 205945292 U CN205945292 U CN 205945292U CN 201620910713 U CN201620910713 U CN 201620910713U CN 205945292 U CN205945292 U CN 205945292U
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China
Prior art keywords
keyway
rotor
punching
rotor punching
synchronous motor
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CN201620910713.6U
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Chinese (zh)
Inventor
付冠东
蒋海云
许攀羽
王宇雨
刘超
王军
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Anhui Ankai Automobile Co Ltd
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Anhui Ankai Automobile Co Ltd
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Abstract

The utility model provides a PMSM rotor is utmost point structure to one side, relates to permanent magnet synchronous motor technical field, rotor to one side utmost point structure is four sections rotors together being formed by four rotor punchings stacks utmost point structures to one side, be equipped with magnet steel slot, first keyway and second keyway on the rotor punching, magnet steel slot arranges in pairs, and evenly distributed is inboard at the rotor punching external diameter, first keyway and second keyway set up on the internal diameter of rotor punching asymmetricly. This structure realizes can reducing the tooth's socket torque by to a great extent by four sections oblique utmost points of rotor through the first keyway of four rotor punchings, the cooperation of second keyway, improves motor control accuracy, the structure of four rotor punchings is identical, adopts the production of same mould, can reduce the input of mould, effectual saving production manufacturing cost.

Description

A kind of permanent-magnetic synchronous motor rotor oblique pole structure
Technical field
This utility model is related to permasyn morot technical field, more particularly relates to a kind of permanent-magnetic synchronous motor rotor Tiltedly pole structure.
Background technology
Electric drive system for electric vehicles is to realize the key of car load driveability.PMSM Control System is high with it Effect, high control precision, high torque density and good torque balance, and the feature of low vibration, noise is by domestic dispatch from foreign news agency The great attention of electrical automobile circle, is the ideal chose of electric drive system for electric vehicles.Yet with slot effect and magnetic field anon-normal The impact of string, permagnetic synchronous motor is often accompanied by larger tooth-harmonic emf, cogging torque and torque pulsation, shadow significantly Ring the control accuracy of motor.
In order to improve the control accuracy of motor, the main method adopting is skewed stator slot and skewed-rotor, and skewed-rotor is big Body is divided into continuous oblique pole and step skewed pole two class, and the wherein oblique pole of rotor segment enjoys because of its inexpensive, suitable production in enormous quantities Concern.Existing step skewed pole is broadly divided into two kinds:One kind is two sections of oblique poles, and this step skewed pole can reduce cogging torque, But due to only having two sections of oblique poles, the reducing effect of cogging torque is unsatisfactory;Another kind is the product of the oblique pole of multistage magnetic pole, this The product of multistage oblique pole has that punching shape is many, mould and frock input are many, it is complicated to assemble.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of permanent-magnetic synchronous motor rotor oblique pole structure, this knot Structure solves two sections of oblique extremely undesirable to the reducing effect of cogging torque and multistage oblique pole product molds and puts into many, manufacturing cost height Problem.
Technical problem to be solved in the utility model employs the following technical solutions to realize.
A kind of permanent-magnetic synchronous motor rotor oblique pole structure, described skewed-rotor structure is to be superimposed upon one by four rotor punchings Act the four sections of skewed-rotor structures being formed, described rotor punching is provided with magnet steel groove, the first keyway and the second keyway, described magnet steel Groove arranges in pairs, is evenly distributed on inside rotor punching external diameter, and described first keyway and the second keyway are asymmetricly arranged on and turn On the internal diameter of sub- punching.
Further, described four rotor punchings are to be overlapped together by keyway cooperation, the order of described keyway cooperation according to Secondary is the second keyway, the first keyway, the first keyway, the second keyway.
Further, in first rotor punching and the 4th rotor punching, one face-up, and a reverse side is upward;The In two rotor punchings and the 3rd rotor punching, one face-up, and a reverse side is upward.
Further, the centrage of the axis of symmetry, the axis of symmetry of the second keyway and rotor punching of described first keyway this three Two between straight line not parallel.
The beneficial effects of the utility model are:This structure is by the first keyway of four rotor punchings, the joining of the second keyway The oblique pole of four sections of rotor is realized in conjunction, can largely reduce cogging torque, improves motor control precision;Four rotor punchings Structure is identical, is produced using same mould, it is possible to reduce the input of mould, effectively saves manufacturing cost.
Brief description
Fig. 1 is rotor punching structure schematic diagram;
Fig. 2 is that this punching laminates schematic diagram.
Wherein, 1- rotor punching, 2- magnet steel groove, 31- first keyway, 32- second keyway, 4- armature spindle, 5- centrage.
Specific embodiment
In order that technological means of the present utility model, creation characteristic, reached purpose and effect are easy to understand, tie below Conjunction is specifically illustrating, and this utility model is expanded on further.
Shown in Fig. 1, Fig. 2, a kind of permanent-magnetic synchronous motor rotor oblique pole structure, described skewed-rotor structure is by four rotors Punching 1 is superimposed, and is nested in the four sections of skewed-rotor structures formed on armature spindle 4.Described rotor punching 1 is provided with magnet steel Groove 2, the first keyway 31 and the second keyway 32, described magnet steel groove 2 arranges in pairs, is evenly distributed on inside rotor punching 1 external diameter, institute State the first keyway 31 and the second keyway 32 is asymmetricly arranged on the internal diameter of rotor punching 1.
Described four rotor punchings 1 are overlapped together by keyway cooperation, and the order of described keyway cooperation is followed successively by Second keyway 32, the first keyway 31, the first keyway 31, the second keyway 32.First rotor punching 1 and the 4th rotor punching 1 In, one is face-up, and a reverse side is upward;In second rotor punching 1 and the 3rd rotor punching 1, one is face-up, One reverse side is upward.The angle, θ of one fixation of symmetrical axle offset of the centrage 5 of described rotor punching 1 and the first keyway 31, institute The first keyway 31 stated and the angle φ of one fixation of symmetrical axle offset of the second keyway 32, preferred version φ=3 θ.
When four rotor punchings 1 are superimposed, make the second keyway 32 of four rotor punchings 1, the first keyway 31, Together with one keyway 31 is completely superposed with the second keyway 32, four rotor punchings 1 are made to fold by inserting a key into aforementioned four keyway Force together.If φ=3 θ, between first rotor punching 1 and second rotor punching 1, the 3rd rotor punching 1 and the 4th Respectively offset angular 3 θ between rotor punching 1, whole skewed-rotor structure staggers 6 θ.
Of the present utility model ultimate principle, principal character and advantage have been shown and described above.The technical staff of the industry It should be appreciated that this utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally The principle of utility model, on the premise of without departing from this utility model spirit and scope, this utility model also has various change And improvement, these changes and improvements both fall within the range of claimed this utility model.This utility model claims scope By appending claims and its equivalent thereof.

Claims (6)

1. a kind of permanent-magnetic synchronous motor rotor oblique pole structure, described skewed-rotor structure is to be superimposed by four rotor punchings Formed it is characterised in that:Described rotor punching is provided with the first keyway and the second keyway, described first keyway and the second keyway Asymmetricly it is arranged on the internal diameter of rotor punching.
2. a kind of permanent-magnetic synchronous motor rotor oblique pole structure according to claim 1 it is characterised in that:Described four rotors Punching is overlapped together by keyway cooperation, the order of described keyway cooperation be followed successively by the second keyway, the first keyway, first Keyway, the second keyway.
3. a kind of permanent-magnetic synchronous motor rotor oblique pole structure according to claim 2 it is characterised in that:First rotor punching In piece and the 4th rotor punching, one face-up, and a reverse side is upward;Second rotor punching and the 3rd rotor punching In, one is face-up, and a reverse side is upward.
4. a kind of permanent-magnetic synchronous motor rotor oblique pole structure according to claim 1 it is characterised in that:Described first keyway This three straight lines of centrage of axis of symmetry, the axis of symmetry of the second keyway and rotor punching between two not parallel.
5. a kind of permanent-magnetic synchronous motor rotor oblique pole structure according to claim 1 it is characterised in that:Described rotor punching It is provided with magnet steel groove, described magnet steel groove is distributed in inside the external diameter of rotor punching.
6. a kind of permanent-magnetic synchronous motor rotor oblique pole structure according to claim 5 it is characterised in that:Described magnet steel groove exists It is equally distributed inside the external diameter of rotor punching.
CN201620910713.6U 2016-08-21 2016-08-21 PMSM rotor is utmost point structure to one side Active CN205945292U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620910713.6U CN205945292U (en) 2016-08-21 2016-08-21 PMSM rotor is utmost point structure to one side

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620910713.6U CN205945292U (en) 2016-08-21 2016-08-21 PMSM rotor is utmost point structure to one side

Publications (1)

Publication Number Publication Date
CN205945292U true CN205945292U (en) 2017-02-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107171468A (en) * 2017-06-02 2017-09-15 杨文波 A kind of design method of permanent magnet machine rotor segmentation
CN108551218A (en) * 2018-03-30 2018-09-18 北京航天万鸿高科技有限公司 A kind of rotor core and its application with side set structure
CN109617277A (en) * 2018-12-21 2019-04-12 重庆赛力盟电机有限责任公司 The oblique pole method of permanent magnet machine rotor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107171468A (en) * 2017-06-02 2017-09-15 杨文波 A kind of design method of permanent magnet machine rotor segmentation
CN108551218A (en) * 2018-03-30 2018-09-18 北京航天万鸿高科技有限公司 A kind of rotor core and its application with side set structure
CN109617277A (en) * 2018-12-21 2019-04-12 重庆赛力盟电机有限责任公司 The oblique pole method of permanent magnet machine rotor

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