CN101373917A - Multi-disc type permanent magnet synchronous motor - Google Patents

Multi-disc type permanent magnet synchronous motor Download PDF

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Publication number
CN101373917A
CN101373917A CNA2008102281201A CN200810228120A CN101373917A CN 101373917 A CN101373917 A CN 101373917A CN A2008102281201 A CNA2008102281201 A CN A2008102281201A CN 200810228120 A CN200810228120 A CN 200810228120A CN 101373917 A CN101373917 A CN 101373917A
Authority
CN
China
Prior art keywords
motor
stator discs
stator
permanent magnet
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2008102281201A
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Chinese (zh)
Inventor
唐任远
韩雪岩
杨菲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang University of Technology
Original Assignee
Shenyang University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang University of Technology filed Critical Shenyang University of Technology
Priority to CNA2008102281201A priority Critical patent/CN101373917A/en
Publication of CN101373917A publication Critical patent/CN101373917A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a multidisc permasyn motor, which comprises a stand, an end housing, a rotating shaft, a bearing, a rotor disc and stator discs. At least a set of disc-type structure composed of a single rotor disc and double stator discs installed on two sides of the single rotor disc is arranged on the motor, wherein, the axial distance between the stator discs and the rotor disc is the gas length of the motor; the stator discs are formed by a silicon plate which is winded into a circular ring-shaped cylinder body; stator slots are evenly distributed on the stator discs. The multidisc permasyn motor has the advantages of short axial dimensions, compact structure, low rotor eddy current loss, small electromechanical time constant, low speed, smooth operation, high utilization ratio of the silicon plate, no lamination and riveting working procedures, convenient taking-off, high torque density and small processional moment, and is suitable for a high-torque direct drive device.

Description

Multi-disc type permanent magnet synchronous motor
Technical field
The present invention relates to technical field of motors, particularly a kind of multi-disc type permanent magnet synchronous motor.
Background technology
Along with the development of motor, people recognize that there are some weakness in common cylinder formula motor, and are low etc. as cooling difficulty and rotor core utilance, so disc type electric machine has been subjected to attention.Disc type permasyn motor combines the characteristics of magneto and motor in axial magnetic field as a kind of permanent magnet synchronous motor of special construction.With respect to traditional radial motor, disc type electric machine silicon steel sheet utilance height, stator are reeled by silicon steel sheet and are formed, and eddy current loss is little, and the motor axial dimension is short, helps improving the torque density of motor, and its shortcoming is not to be suitable for high-torque direct to connect drive unit.And multi-disc type permanent magnet synchronous motor adopts the polydisc structure can increase the torque of disc-type permanent magnet motor, is suitable for high-torque direct and connects drive unit.In addition, the multi-disc type motor can be by various the constituting of motor stator rotor disk body, and the motor after the combination strengthened reliability, and even wherein one group of motor breaks down, and all the other motor still can work on, the unlikely paralysis that causes system.
Summary of the invention
The shortcoming that the present invention is directed to the existence of common cylinder formula motor and disc type electric machine provides a kind of multi-disc type permanent magnet synchronous motor.
This motor is provided with one group of tray type structure of being made up of single rotor dish and the two stator discs that are located at these rotor disk both sides at least, wherein the axial distance between stator discs and the rotor disk is the gas length of motor, comprise support, end cap, rotating shaft, bearing, rotor disk, stator discs, promptly a stator discs is fixed on the front end housing, front end housing and rear end cap and support are fixed, be connected by deep groove ball bearing between the front end housing of motor and rear end cap and the motor rotary shaft and fixing, rotor disk is fixed on the motor rotary shaft, another stator discs is fixedly on the rear end cap, two stator discs are positioned at the rotor disk both sides and directly are connected with the cooling that is beneficial to the motor stator dish with end cap, radiating effect is better, can improve the bulk density of motor.Wherein stator discs is that silicon steel sheet is wound into the annular cylinder, and even distribution stator slot above the stator discs so both can improve the utilance of silicon steel sheet, and simplification technology can reduce generator loss again.
After the motor energising, by the stator winding of the terminal box electric current inflow motor on the support, the permanent magnet axial magnetized of motor, thus in air gap, produce multipole axial magnetic field.In axial air-gap magnetic field, the stator winding of motor is subjected to tangential electromagnetic force to produce electromagnetic torque, makes the rotor rotation of motor export torque from axle head, realizes the conversion from the electric energy to mechanical energy.
Advantage of the present invention is that axial dimension is short, compact conformation, and rotor eddy current loss is little, electro mechanic time constant is little, low cruise is steady, silicon steel sheet utilance height, does not have lamination, riveting operation, roll off the production line convenience, torque density height, and moment of inertia is little etc.This motor can further improve torque after making many air gaps fabricated structure, is particularly suitable for high-torque direct and connects drive unit.
One, description of drawings
Fig. 1 is the overall structure schematic diagram of this invention motor;
Fig. 2 is the overall structure schematic diagram of this invention motor (two groups);
Fig. 3 is the air gap flux density waveform of motor of the present invention, and wherein abscissa is angle (unit: °), and ordinate is an air gap flux density B (unit: T).
Among Fig. 1: 1 rotating shaft, 2 deep groove ball bearings, 3 screws, 4 front end housings, 5 water cooling plants, 6 suspension ring, 7 supports, 8 rear end caps, 9 rotor disks, 10 stator discs, 11 stator winding, 12 seams.
Two, embodiment
Further narrate content of the present invention below in conjunction with drawings and Examples:
Mechanical structure of the present invention as shown in Figure 1.What installed in the outside of support 7 is water cooling plant 5, the stator discs 10 in the inboard of support 7 is fixed on the front end housing 4 by screw 3, front end housing 4 and rear end cap 8 are fixing with support 7 by seam 12 and screw 3, behind the stator winding installation, are all irritating heat-conducting glue around the stator winding 11.Be connected by deep groove ball bearing 2 between the front end housing 4 of motor and rear end cap 8 and the motor rotary shaft and fixing.Rotor disk 9 utilizes screw 3 to be fixed on the motor rotary shaft 1, and fixedly on the rear end cap 8, the axial distance between the rotor dish is the gas length of motor to another stator discs 10 by screw 3.
Have suspension ring 6 on the support 7, in the motor hoisting process, use.The magnetic structure of rotor is to adopt every extremely following 2 permanent magnets, and resulting air gap flux density waveform as shown in Figure 3.
Fig. 2 is the electric motor structure schematic diagram after the motor shown in two picture groups 1 is formed, and the structure of each group motor is identical with above-mentioned electric motor structure, establishes cooling device between two groups of motor, and two end caps are fixing by screw 3.
The torque density of this invention motor has improved 20% than traditional radial permanent magnet motor, improves about 50% than asynchronous motor.For example, 200kW disc-type electric motor torque density is 11.2kNm -2, general permanent magnet motor torque density radially is 6.2kNm -2, the torque density of asynchronous motor is 8.7kNm -2
In conjunction with Fig. 1 and Fig. 2, such multi-disc type motor can continue lengthening and strengthen combination in any.And the motor after the combination has strengthened reliability, and even wherein one group of motor breaks down, and all the other motor still can work on, the unlikely paralysis that causes system.

Claims (3)

1. multi-disc type permanent magnet synchronous motor, comprise support, front end housing, rear end cap, rotating shaft, bearing, rotor disk, stator discs, it is characterized in that: this motor is provided with one group of tray type structure of being made up of single rotor dish and the two stator discs that are located at these rotor disk both sides at least, and wherein the axial distance between stator discs and the rotor disk is the gas length of motor.
2. multi-disc type permanent magnet synchronous motor according to claim 1, it is characterized in that a stator discs is fixed on the front end housing in every group on this motor, front end housing and rear end cap and support are fixed, be connected by bearing between the front end housing of motor and rear end cap and the motor rotary shaft and fixing, rotor disk is fixed on the motor rotary shaft, and another stator discs is fixedly on the rear end cap.
3. multi-disc type permanent magnet synchronous motor according to claim 1 is characterized in that stator discs is that silicon steel sheet is wound into the annular cylinder, even distribution stator slot above the stator discs.
CNA2008102281201A 2008-10-17 2008-10-17 Multi-disc type permanent magnet synchronous motor Pending CN101373917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2008102281201A CN101373917A (en) 2008-10-17 2008-10-17 Multi-disc type permanent magnet synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008102281201A CN101373917A (en) 2008-10-17 2008-10-17 Multi-disc type permanent magnet synchronous motor

Publications (1)

Publication Number Publication Date
CN101373917A true CN101373917A (en) 2009-02-25

Family

ID=40447908

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2008102281201A Pending CN101373917A (en) 2008-10-17 2008-10-17 Multi-disc type permanent magnet synchronous motor

Country Status (1)

Country Link
CN (1) CN101373917A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105429404A (en) * 2015-12-24 2016-03-23 韩汶冀 Power generation device
CN109075685A (en) * 2016-01-18 2018-12-21 托马斯·塔德乌什·皮斯科日 synchronous generator
CN111509939A (en) * 2020-04-20 2020-08-07 北京理工大学 Integrated axial magnetic flux disc type generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105429404A (en) * 2015-12-24 2016-03-23 韩汶冀 Power generation device
CN109075685A (en) * 2016-01-18 2018-12-21 托马斯·塔德乌什·皮斯科日 synchronous generator
CN111509939A (en) * 2020-04-20 2020-08-07 北京理工大学 Integrated axial magnetic flux disc type generator

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WD01 Invention patent application deemed withdrawn after publication

Open date: 20090225

C02 Deemed withdrawal of patent application after publication (patent law 2001)