CN105743309A - Permanent magnet excitation electric generator - Google Patents

Permanent magnet excitation electric generator Download PDF

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Publication number
CN105743309A
CN105743309A CN201610256125.XA CN201610256125A CN105743309A CN 105743309 A CN105743309 A CN 105743309A CN 201610256125 A CN201610256125 A CN 201610256125A CN 105743309 A CN105743309 A CN 105743309A
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CN
China
Prior art keywords
permanent magnet
stator poles
stator
armature winding
phase
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
CN201610256125.XA
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Chinese (zh)
Inventor
史立伟
郭盈志
肖东
张学义
巩合聪
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.)
Shandong University of Technology
Original Assignee
Shandong 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 Shandong University of Technology filed Critical Shandong University of Technology
Priority to CN201610256125.XA priority Critical patent/CN105743309A/en
Publication of CN105743309A publication Critical patent/CN105743309A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/17Stator cores with permanent magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/24Rotor cores with salient poles ; Variable reluctance rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator
    • H02K16/04Machines with one rotor and two stators

Abstract

The invention provides a permanent magnet excitation electric generator, which comprises a shaft, a housing, first stator cores, first permanent magnets, first stator poles, armature windings, a rotor core, second stator poles, second permanent magnets and second stator cores, wherein the disc-type rotor core is fixed on the shaft; two end parts, in the axial direction, of the rotor core are provided with the rotor poles which protrude along the axial direction; one annular-sector first permanent magnet is arranged at the backs of every three first stator poles; an annular first stator core is arranged at the back of each first permanent magnet; one annular-sector second permanent magnet is arranged at the backs of every three second stator poles; one annular second stator core is arranged at the back of each second permanent magnet; and one centralized armature winding winds each first stator pole and each second stator pole. The permanent magnet excitation electric generator provided by the invention can be used as a generator and can work as a motor; the first stator poles and the second stator poles are staggered at a certain angle; and six phases of windings with complementary phase angles can be obtained, so that the power density and the torque density of the motor are effectively improved.

Description

The motor generator of permanent magnet excitation
Technical field
The present invention relates to the motor generator of a kind of permanent magnet excitation, belong to car electrics technical field.
Background technology
China's rare earth resources enriches, and exploitation application permanent-magnetic energy-saving electric machine has great strategic importance.Magneto has high efficiency, high power density, simple in construction and the plurality of advantages such as reliable.Therefore, magneto is applied widely in the fields such as industrial, civilian, military and Aero-Space.Owing to disc type electric machine belongs to motor in axial magnetic field, it is short that it has axial dimension, compact conformation, and light weight, volume are little, power density high, is therefore particularly suited for the motor volume such as wind-power electricity generation and electric automobile and has the occasion of particular/special requirement.
Traditional permanent magnet disc motor is to be placed in rotor core by permanent magnet, this mode can the advantage of comprehensively magneto and disc type electric machine, there is higher reliability and relatively low electrical loss simultaneously.But the fixing difficulty of permanent magnet that permanent magnet can cause in the rotor increases, it is necessary to permanent magnet is protected to prevent high speed rotating from permanent magnet is caused damage by special protective cover.Therefore, if invention permanent magnet and armature winding dispose motor generator in the stator, it is to avoid the problem of temperature rise of ventional disc magneto, reliability and the dynamic operation performance of motor are improved.
In close patent, application number is the application for a patent for invention of 201310277469.5: a kind of disc type electric machine, a kind of disc type electric machine of this application adopts single disc-type structure, its stator is fixed on electric machine casing, rotor is fixed on armature spindle, and permanent magnet is fixed on p-m rotor and relative with stator core.Although this structure combines disc type electric machine and permanent magnet motor structure is compact, power density advantages of higher, but there is the problem that air-gap field is difficult to regulate and still govern its development.
By the problem adopting the motor of double plate permanent-magnet structure can effectively improve the air-gap field adjustment difficulty that single disc-type magneto produces.In existing technology, existing related application mainly has the application number to be: the application for a patent for invention of 201510786946.X: stator permanent magnetic type double-salient-pole disc type electric machine, and the stator permanent magnetic type double-salient-pole disc type electric machine of this application is by two stators, one rotor, armature winding, permanent magnet, motor shaft forms.In this stator permanent magnetic type double-salient-pole disc type electric machine, permanent magnet is embedded in stator core, and permanent magnet along the circumferential direction magnetizes.The motor generator of a kind of permanent magnet excitation of the present invention adopts double plate structure, and two panels annular permanent magnet is fixed in stator core, has three stator poles on every permanent magnet.This structure of the present invention while reducing motor volume, can effectively improve power density and the torque density of motor.
Current applicant is through retrieval both at home and abroad, not yet retrieve the motor generator of a kind of permanent magnet excitation involved in the present invention, adopt double plate, circle ring sector magnet structure, and can not only be used for electromotor, also can as electric motor operation, by certain angle that the first stator poles and the second stator poles are staggered, it is possible to obtain six phase windings that phase angle is complementary, it is possible to be effectively improved power density and the torque density of motor.
Summary of the invention
In order to invent the motor generator of a kind of permanent magnet excitation so that it is there is simple in construction, be prone to cooling, air-gap field easy to adjust, the present invention adopts the following technical scheme that
A kind of motor generator of permanent magnet excitation, it is made up of axle (1), shell (2), the first stator core (3), the first permanent magnet (4), the first stator poles (5), armature winding, rotor core (9), the second stator poles (10), the second permanent magnet (14) and the second stator core (15), it is characterised in that:
Being fixed with the rotor core (9) of disc type on axle (1), under the effect of bearing, axle (1) can rotate by rotor driven (9) unshakable in one's determination;
Rotor core (9) has rotor pole protruding vertically at two axial end faces;
The axial both sides of rotor core (9) have the first stator poles (5) and the second stator poles (10), the first stator poles (5) and the second stator poles (10) all in circle ring sector respectively;There is first permanent magnet (4) of a piece of circle ring sector the behind of every three the first stator poles (5);First stator core (3) that behind is annular of the first permanent magnet (4);There is second permanent magnet (14) of a piece of circle ring sector the behind of every three the second stator poles (10);Second stator core (15) that behind is annular of the second permanent magnet (14);
The magnetizing direction of adjacent two panels the first permanent magnet (4) is contrary;
The shell (2) that first stator poles (5), the first permanent magnet (4) and the first stator core (3) are sequentially fixed at motor side is internal, and the shell (2) that the second stator poles (10), the second permanent magnet (14) and the second stator core (15) are sequentially fixed at motor opposite side is internal;
Each first stator poles (5) and the second stator poles (10) are all wound with a centralized armature coil, with armature coil corresponding to a piece of first permanent magnet (4) around to identical, with armature coil corresponding to a piece of second permanent magnet (14) around to identical;The armature coil of adjacent two panels the first permanent magnet (4) correspondence is around on the contrary, and the armature coil of adjacent two panels the second permanent magnet (14) correspondence is around on the contrary;Each armature coil serial or parallel connection composition armature winding.
The motor generator of permanent magnet excitation as above, it is characterised in that:
When rotor pole slips into the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding increases;When rotor pole skids off the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding reduces;
Prime mover band moving axis (1) rotates, and threephase armature winding induces three-phase alternating voltage, and the motor generator of permanent magnet excitation can as generator operation;
To the logical forward current of a phase armature winding that magnetic linkage rises, to the logical negative current of a phase armature winding that magnetic linkage declines, the motor generator of permanent magnet excitation just can as motor running, the torque that externally output is positive.
The motor generator of permanent magnet excitation as above, it is characterised in that:
A phase armature winding is formed after the series connection of synchronous armature coil;Armature winding in first stator core (3) can be divided into three-phase, and the armature winding in the second stator core (15) also can be divided into three-phase;
Stagger certain angle by the first stator poles (5) and the second stator poles (10), it is possible to obtains six phase windings that phase angle is complementary.
Beneficial effects of the present invention is as follows:
(1) motor generator of permanent magnet excitation of the present invention adopts permanent-magnet disk structure to have simple in construction, be prone to cooling and have the advantage that axial length is short, efficiency is high;
(2) motor generator of a kind of novel structure is disclosed, the axial both sides of rotor core have the first stator poles and the second stator poles respectively, the behind of stator poles has the permanent magnet of a piece of circle ring sector, this structure can be effectively improved power density and the torque density of motor;
(3) rectangular permanent magnet is fixed in stator core, and is embedded in rotor unlike ventional disc magneto permanent magnet, improve generator amature mechanical strength;
(4) present invention can not only be used for electromotor, it is possible to as electric motor operation, by the certain angle that the first stator poles and the second stator poles staggered, it is possible to obtains six phase windings that phase angle is complementary, it is possible to efficiently solve the problem that air-gap field is difficult to regulate.
Accompanying drawing explanation
Fig. 1 is the motor generator sectional side elevation of permanent magnet excitation of the present invention.Wherein: 1, axle, 2, shell, the 3, first stator core, the 4, first permanent magnet, the 5, first stator poles, 6, A phase armature winding, 9, rotor core, the 10, second stator poles, 11, D phase armature winding, the 14, second permanent magnet, 15 second stator cores.
Fig. 2 is the armature winding side view of motor generator first stator poles of permanent magnet excitation of the present invention.Wherein: 1, axle, the 3, first stator core, the 5, first stator poles, 6, A phase armature winding, 7, B phase armature winding, 8, C phase armature winding.
Fig. 3 is the armature winding side view of motor generator second stator poles of permanent magnet excitation of the present invention.Wherein: 1, axle, the 10, second stator poles, 11, D phase armature winding, 12, E phase armature winding, 13, F phase armature winding, the 15, second stator core.
Fig. 4 is the permanent magnet side view of motor generator first stator poles of permanent magnet excitation of the present invention.Wherein: 1, axle, the 4, first permanent magnet.
Fig. 5 is the dynamo-electric machine rotor side view of permanent magnet excitation of the present invention.Wherein: 1, axle, 9, rotor core, 16, rotor pole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention is described in further details.
Fig. 1 is the motor generator sectional side elevation of permanent magnet excitation of the present invention.The motor generator of permanent magnet excitation, is made up of axle (1), shell (2), the first stator core (3), the first permanent magnet (4), the first stator poles (5), armature winding, rotor core (9), the second stator poles (10), the second permanent magnet (14) and the second stator core (15).Being fixed with the rotor core (9) of disc type on axle (1), under the effect of bearing, axle (1) can rotate by rotor driven (9) unshakable in one's determination.Rotor core (9) has rotor pole protruding vertically at two axial end faces, and the axial both sides of rotor core (9) have the first stator poles (5) and the second stator poles (10) respectively.There is first permanent magnet (4) of a piece of circle ring sector the behind of every three the first stator poles (5), first stator core (3) that behind is annular of the first permanent magnet (4).There is second permanent magnet (14) of a piece of circle ring sector the behind of every three the second stator poles (10), second stator core (15) that behind is annular of the second permanent magnet (14).The shell (2) that first stator poles (5), the first permanent magnet (4) and the first stator core (3) are sequentially fixed at motor side is internal, and the shell (2) that the second stator poles (10), the second permanent magnet (14) and the second stator core (15) are sequentially fixed at motor opposite side is internal.Each first stator poles (5) and the second stator poles (10) are all wound with a centralized armature winding.
Fig. 2 is the armature winding side view of motor generator first stator poles of permanent magnet excitation of the present invention.Shown the first stator core (3) in annular has the first stator poles that 6 circle ring sectors are protruding.Having the armature coil that an edge is perpendicular to axis direction coiling in each first stator poles, form a phase armature winding after the series connection of synchronous armature coil, armature winding is centralized winding.There is first permanent magnet (4) of a piece of circle ring sector the behind of every three the first stator poles (5), with A phase armature winding (6) of a piece of first permanent magnet (4) correspondence, B phase armature winding (7), C phase armature winding (8) around to identical, the armature winding of adjacent two panels the first permanent magnet (4) correspondence is around on the contrary.
Fig. 3 is the armature winding side view of motor generator second stator poles of permanent magnet excitation of the present invention.
Fig. 4 is the permanent magnet side view of motor generator first stator poles of permanent magnet excitation of the present invention.As shown in the figure: in the first stator core (3), be fixed with first permanent magnet (4) of two circle ring sectors, and the magnetizing direction of adjacent two panels the first permanent magnet (4) is contrary.
Fig. 5 is the dynamo-electric machine rotor side view of permanent magnet excitation of the present invention.The rotor core (9) of shown disc type is fixed on axle (1), under the effect of bearing, axle (1) can rotate by rotor driven (9) unshakable in one's determination, and rotor core (9) has 4 protruding vertically rotor poles at two axial end faces.
Below the motor generator of the permanent magnet excitation that the present invention proposes is operated the explanation of principle.
As mentioned above in the motor generator of permanent magnet excitation of the present invention, the armature winding in the first stator core can be divided into three-phase, and the armature winding in the second stator core also can be divided into three-phase.Stagger certain angle by the first stator poles and the second stator poles, it is possible to obtains six phase windings that phase angle is complementary.When rotor pole slips into the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding increases;When rotor pole skids off the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding reduces.
When the motor generator of permanent magnet excitation of the present invention is as generator operation, prime mover band moving axis rotates, and threephase armature winding induces three-phase alternating voltage, and the motor generator of permanent magnet excitation can be used as generator operation.
When the motor generator of permanent magnet excitation of the present invention is as motor running, to the logical forward current of a phase armature winding that magnetic linkage rises, to the logical negative current of a phase armature winding that magnetic linkage declines, the motor generator of permanent magnet excitation just can as motor running, the torque that externally output is positive.
It is to be noted; the above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; the variations and alternatives that can readily occur in, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (3)

1. the motor generator of permanent magnet excitation, it is made up of axle (1), bearing, shell (2), the first stator core (3), the first permanent magnet (4), the first stator poles (5), armature winding, rotor core (9), the second stator poles (10), the second permanent magnet (14) and the second stator core (15), it is characterised in that:
Being fixed with the rotor core (9) of disc type on axle (1), under the effect of bearing, axle (1) can rotate by rotor driven (9) unshakable in one's determination;
Rotor core (9) has rotor pole protruding vertically at two axial end faces;
The axial both sides of rotor core (9) are that the first stator poles (5) and the second stator poles (10), the first stator poles (5) and the second stator poles (10) are all in circle ring sector respectively;There is first permanent magnet (4) of a piece of circle ring sector the behind of every three the first stator poles (5);First stator core (3) that behind is annular of the first permanent magnet (4);There is second permanent magnet (14) of a piece of circle ring sector the behind of every three the second stator poles (10);Second stator core (15) that behind is annular of the second permanent magnet (14);
Adjacent two panels the first permanent magnet (4) or the magnetizing direction of the second permanent magnet (14) are contrary;
The shell (2) that first stator poles (5), the first permanent magnet (4) and the first stator core (3) are sequentially fixed at described motor generator side is internal, and the shell (2) that the second stator poles (10), the second permanent magnet (14) and the second stator core (15) are sequentially fixed at described motor generator opposite side is internal;
Each first stator poles (5) and the second stator poles (10) are wound with a centralized armature coil respectively, with armature coil corresponding to a piece of first permanent magnet (4) around to identical, with armature coil corresponding to a piece of second permanent magnet (14) around to identical;The armature coil of adjacent two panels the first permanent magnet (4) correspondence is around on the contrary, and the armature coil of adjacent two panels the second permanent magnet (14) correspondence is around on the contrary;Each armature coil serial or parallel connection composition armature winding.
2. the motor generator of permanent magnet excitation as claimed in claim 1, it is characterised in that:
When rotor pole slips into the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding increases;When rotor pole skids off the stator poles at a phase armature winding place, the magnetic linkage of this phase armature winding reduces;
Prime mover band moving axis (1) rotates, and threephase armature winding induces three-phase alternating voltage, and the motor generator of permanent magnet excitation can as generator operation;
To the logical forward current of a phase armature winding that magnetic linkage rises, to the logical negative current of a phase armature winding that magnetic linkage declines, the motor generator of permanent magnet excitation just can as motor running, the torque that externally output is positive.
3. the motor generator of permanent magnet excitation as claimed in claim 1, it is characterised in that:
A phase armature winding is formed after the series connection of synchronous armature coil;Armature winding in first stator core (3) can be divided into three-phase, and the armature winding in the second stator core (15) also can be divided into three-phase;
Stagger in a circumferential direction certain angle by the first stator poles (5) and the second stator poles (10), it is possible to obtains six phase windings that phase angle is complementary.
CN201610256125.XA 2016-04-25 2016-04-25 Permanent magnet excitation electric generator Pending CN105743309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610256125.XA CN105743309A (en) 2016-04-25 2016-04-25 Permanent magnet excitation electric generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610256125.XA CN105743309A (en) 2016-04-25 2016-04-25 Permanent magnet excitation electric generator

Publications (1)

Publication Number Publication Date
CN105743309A true CN105743309A (en) 2016-07-06

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107528441A (en) * 2017-10-23 2017-12-29 史立伟 A kind of external rotor wind driven electric generator
CN107579640A (en) * 2017-10-23 2018-01-12 史立伟 A kind of permanent-magnet wind power motor of low rotor inertia
CN107579639A (en) * 2017-10-23 2018-01-12 史立伟 A kind of high temperature resistant permanent-magnet servo motor
CN107733118A (en) * 2017-10-23 2018-02-23 史立伟 A kind of low rotor inertia servomotor
CN111010009A (en) * 2019-11-26 2020-04-14 北京动力机械研究所 Multi-phase high-reliability permanent magnet disc type motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201107842Y (en) * 2006-12-04 2008-08-27 袁会文 Disc type switch reluctance motor
WO2015074919A2 (en) * 2013-11-22 2015-05-28 Mahle Behr Gerenciamento Térmico Brasil Ltda. Axial magnetic flux electric motor
CN105245073A (en) * 2015-11-16 2016-01-13 南京理工大学 Stator permanent-magnetic doubly salient disc-type motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201107842Y (en) * 2006-12-04 2008-08-27 袁会文 Disc type switch reluctance motor
WO2015074919A2 (en) * 2013-11-22 2015-05-28 Mahle Behr Gerenciamento Térmico Brasil Ltda. Axial magnetic flux electric motor
CN105245073A (en) * 2015-11-16 2016-01-13 南京理工大学 Stator permanent-magnetic doubly salient disc-type motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107528441A (en) * 2017-10-23 2017-12-29 史立伟 A kind of external rotor wind driven electric generator
CN107579640A (en) * 2017-10-23 2018-01-12 史立伟 A kind of permanent-magnet wind power motor of low rotor inertia
CN107579639A (en) * 2017-10-23 2018-01-12 史立伟 A kind of high temperature resistant permanent-magnet servo motor
CN107733118A (en) * 2017-10-23 2018-02-23 史立伟 A kind of low rotor inertia servomotor
CN107733118B (en) * 2017-10-23 2019-08-09 深圳供电局有限公司 A kind of low rotor inertia servo motor
CN107528441B (en) * 2017-10-23 2019-08-13 深圳供电局有限公司 A kind of external rotor wind driven electric generator
CN107579640B (en) * 2017-10-23 2019-11-29 徐州诚凯知识产权服务有限公司 A kind of permanent-magnet wind power motor of low rotor inertia
CN111010009A (en) * 2019-11-26 2020-04-14 北京动力机械研究所 Multi-phase high-reliability permanent magnet disc type motor

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