CN109494905A - The adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole - Google Patents
The adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole Download PDFInfo
- Publication number
- CN109494905A CN109494905A CN201811627971.3A CN201811627971A CN109494905A CN 109494905 A CN109494905 A CN 109494905A CN 201811627971 A CN201811627971 A CN 201811627971A CN 109494905 A CN109494905 A CN 109494905A
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- permanent magnet
- low
- coercivity permanent
- coercivity
- permanent magnets
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Classifications
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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
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
- H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole, belongs to magneto field, and the present invention is to solve the problems, such as to exist using the motor of high-coercive force and low-coercivity permanent magnet combination field structure to inhibit High-coercivity Permanent Magnets demagnetizing effect.The present invention program: one V-arrangement High-coercivity Permanent Magnets slot of every extremely lower setting of rotor core；Rotor core it is every extremely it is lower be symmetrical arranged a pair of of rectangle, axially through low-coercivity permanent magnet trough, two notches of High-coercivity Permanent Magnets slot are connected to a low-coercivity permanent magnet trough respectively；Two low-coercivity permanent magnet troughs adjacent under homopolarity are not parallel；It is provided with High-coercivity Permanent Magnets in High-coercivity Permanent Magnets slot, one piece of low-coercivity permanent magnet is set in every straight trough of the low-coercivity permanent magnet trough of V-arrangement；Same pole is arranged with a pair of of arc magnetic barrier, and the arc magnetic barrier is arranged in every extremely lower two kinds of permanent magnet cusps positions, and adjacent two arc magnetic barrier is not in same on concave arc under homopolarity.
Description
Technical field
The invention belongs to magneto fields, are related to the wide range speed control technology of magneto.
Background technique
Permanent magnet synchronous motor becomes the common driving electricity of new-energy automobile because of its high power density, efficient advantage
Machine, but to have the shortcomings that when permanent magnetic field adjusts difficult, weak magnetism speed expansion efficiency low etc. for such motor.In view of the above-mentioned problems, scholar
Propose a kind of adjustable adjustable flux electric machine of permanent magnetic field, this motor can fill by applying d axis, demagnetizing current pulse
Change permanent magnet magnetization state, to reach the purpose of broadening electric machine speed regulation range.Compared to only with a kind of low-coercivity forever
The adjustable flux electric machine of magnet can effectively improve using the motor of high-coercive force and low-coercivity permanent magnet combination field structure
Power density.Flux electric machine that parallel connection type is adjustable is obtained because having many advantages, such as that demagnetizing current pulse is small, pole combination is various informative
Extensive research, but its High-coercivity Permanent Magnets makes low-coercivity permanent magnetism body running to the demagnetizing effect of low-coercivity permanent magnet
Stability is poor, and normal magnetization current amplitude needed for motor is larger, increases the burden of motor driver, therefore inhibit high-coercive force
Current impulse needed for permanent magnet demagnetizing effect, reduction normal magnetization is the research emphasis of the adjustable flux electric machine of parallel connection type.
Summary of the invention
The invention aims to solve to deposit using the motor of high-coercive force and low-coercivity permanent magnet combination field structure
The problem of inhibiting High-coercivity Permanent Magnets demagnetizing effect, providing a kind of magnetic circuit partition type V-type parallel combination magnetic pole can adjustable magnetic
Three-way motor, due to motor it is same extremely under two kinds of permanent magnet cusps above placed arc every magnetic magnetic hinder, motor high-coercive force
Permanent magnet is weakened the demagnetizing effect of low-coercivity permanent magnet, reduces the current impulse size that magnetizes needed for motor, reduces
Drive control device capacity needed for motor expands load adjustable magnetic multiple；Meanwhile arc magnetic hinders the magnetic flux generated to permanent magnetism magnetic pole
Play the role of redistributing, improves the fundamental voltage amplitude and sine degree of empty load of motor air gap flux density.
The adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole of the present invention, including stator core 1, stator around
Group 2, rotor core 3 and shaft 9；Rotor core 3 is fixed in shaft 9, and is located inside stator core 1, and stator winding 2 is arranged
In stator core 1；
It further include High-coercivity Permanent Magnets 4, High-coercivity Permanent Magnets slot 5, low-coercivity permanent magnet 6, low-coercivity permanent magnetism
Body slot 7 and arc magnetic barrier 8,
One V-arrangement of every extremely lower setting of rotor core 3, axially through High-coercivity Permanent Magnets slot 5, high-coercive force permanent magnetism
It is directed toward center of circle direction in the V-arrangement tip of body slot 5；Rotor core 3 it is every extremely it is lower be symmetrical arranged a pair of of rectangle, axially through low coercive
Two notches of power permanent magnet trough 7, High-coercivity Permanent Magnets slot 5 are connected to a low-coercivity permanent magnet trough 7 respectively；Not homopolarity
Under adjacent two low-coercivity permanent magnet troughs 7 it is parallel；
It is provided with High-coercivity Permanent Magnets 4 in High-coercivity Permanent Magnets slot 5, every of the low-coercivity permanent magnet trough 7 of V-arrangement
One piece of low-coercivity permanent magnet 6 is respectively set in straight trough, the High-coercivity Permanent Magnets 4 and low-coercivity permanent magnet 6 of slot connectivity part it
Between there are air gaps；
Same extremely lower two low-coercivity permanent magnet troughs 7 and High-coercivity Permanent Magnets slot 5 enclose in the rotor core 3 in region
It is symmetrically arranged with a pair of of arc magnetic barrier 8, the arc magnetic barrier 8 is arranged in every extremely lower two kinds of permanent magnet cusps positions, not under homopolarity
Adjacent two arc magnetic barrier 8 is on concave arc in same.
Preferably, the rectangle short side of low-coercivity permanent magnet 6 is located at the notch of low-coercivity permanent magnet trough 7.
Preferably, the magnetizing direction of low-coercivity permanent magnet 6 perpendicular to low-coercivity permanent magnet trough 7 rectangle long side, and
The magnetizing direction of two neighboring low-coercivity permanent magnet 6 is opposite；The magnetizing direction of High-coercivity Permanent Magnets 4 is perpendicular to high-coercive force
Every straight trough long side of permanent magnet trough 5, and two neighboring High-coercivity Permanent Magnets 4 magnetizing direction on the contrary, it is same extremely under, it is low
Coercivity permanent magnet 6 and High-coercivity Permanent Magnets 4 are all the pole N or the pole S.
Preferably, low-coercivity permanent magnet 6 is less than the permanent-magnet material of 250kA/m using coercivity；High-coercivity Permanent Magnets 4
It is greater than the permanent-magnet material of 800kA/m using coercivity.
Preferably, low-coercivity permanent magnet 6 and High-coercivity Permanent Magnets 4 are monolith permanent magnet, or along axial direction by muti-piece
Permanent magnet is constituted.
Preferably, arc magnetic barrier 8 be epoxy resin to be filled inside the arc empty slot axially penetrated through or slot or carbon fiber is non-leads
Non-conducting material is filled inside magnetic material or slot.
Beneficial effects of the present invention: the adjustable flux electric machine of told magnetic circuit partition type V-type parallel combination magnetic pole of the invention is just
Often when operation, the magnetic flux of high-coercive force and low-coercivity permanent magnet enters air gap jointly, and the two is parallel relationship, due at two kinds
It placed magnetic barrier between permanent magnet, increase the magnetic resistance that High-coercivity Permanent Magnets magnetic flux passes through low-coercivity magnetic circuit, cut
Weak demagnetizing effects of the High-coercivity Permanent Magnets to low-coercivity permanent magnet, improve low-coercivity Operating Point of Permanent Magnet, simultaneously
Reduce pulse current amplitude required when motor forward direction magnetizes；In addition, motor main magnetic circuit is divided into two parts by arc magnetic barrier,
A part of magnetic flux is provided by High-coercivity Permanent Magnets, and corresponding air gap flux density is higher, another part magnetic flux by low-coercivity forever
Magnet provides, and corresponding air gap flux density is lower, therefore the extremely lower air gap flux density of motor a pair is in the distribution of symmetrical ladder, sine
Air gap flux density compared with no magnetic barrier structural electromotor is more preferable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole of the present invention.
Fig. 2 is the adjustable flux electric machine zero load equivalent magnetic circuit figure of magnetic circuit partition type V-type parallel combination magnetic pole.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
The adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole, including stator core 1, stator winding 2, rotor iron
The heart 3 and shaft 9；Rotor core 3 is fixed in shaft 9, and is located inside stator core 1, and stator winding 2 is arranged in stator core
On 1；
It further include High-coercivity Permanent Magnets 4, High-coercivity Permanent Magnets slot 5, low-coercivity permanent magnet 6, low-coercivity permanent magnetism
Body slot 7 and arc magnetic barrier 8,
One V-arrangement of every extremely lower setting of rotor core 3, axially through High-coercivity Permanent Magnets slot 5, high-coercive force permanent magnetism
It is directed toward center of circle direction in the V-arrangement tip of body slot 5；Rotor core 3 it is every extremely it is lower be symmetrical arranged a pair of of rectangle, axially through low coercive
Two notches of power permanent magnet trough 7, High-coercivity Permanent Magnets slot 5 are connected to a low-coercivity permanent magnet trough 7 respectively；Not homopolarity
Under adjacent two low-coercivity permanent magnet troughs 7 it is parallel；
It is provided with High-coercivity Permanent Magnets 4 in High-coercivity Permanent Magnets slot 5, every of the low-coercivity permanent magnet trough 7 of V-arrangement
One piece of low-coercivity permanent magnet 6 is respectively set in straight trough, the High-coercivity Permanent Magnets 4 and low-coercivity permanent magnet 6 of slot connectivity part it
Between there are air gap, which is the irregular air gap of triangle.
Same extremely lower two low-coercivity permanent magnet troughs 7 and High-coercivity Permanent Magnets slot 5 enclose in the rotor core 3 in region
It is symmetrically arranged with a pair of of arc magnetic barrier 8, the arc magnetic barrier 8 is arranged in every extremely lower two kinds of permanent magnet cusps positions, not under homopolarity
Adjacent two arc magnetic barrier 8 is on concave arc in same.
The rectangle short side of low-coercivity permanent magnet 6 is located at the notch of low-coercivity permanent magnet trough 7.
The magnetizing direction of low-coercivity permanent magnet 6 perpendicular to low-coercivity permanent magnet trough 7 rectangle long side, and it is two neighboring
The magnetizing direction of low-coercivity permanent magnet 6 is opposite；The magnetizing direction of High-coercivity Permanent Magnets 4 is perpendicular to High-coercivity Permanent Magnets slot
5 every straight trough long side, and two neighboring High-coercivity Permanent Magnets 4 magnetizing direction on the contrary, it is same extremely under, low-coercivity is forever
Magnet 6 and High-coercivity Permanent Magnets 4 are all the pole N or the pole S.
Long side described in present embodiment, short side, rectangle, V-arrangement, triangle refer both in motor vertical profile shown in FIG. 1 section
Diagram be directed toward.
Low-coercivity permanent magnet 6 is less than the permanent-magnet material of 250kA/m using coercivity；High-coercivity Permanent Magnets 4 are using strong
Stupid power is greater than the permanent-magnet material of 800kA/m.
Low-coercivity permanent magnet 6 and High-coercivity Permanent Magnets 4 are monolith permanent magnet, or along axial direction by muti-piece permanent magnet structure
At.
Arc magnetic barrier 8 is filling epoxy resin or carbon fiber non-magnet material inside the arc empty slot axially penetrated through or slot,
Or non-conducting material is filled inside slot.
When motor of the present invention works normally, the magnetic flux of high-coercive force and low-coercivity permanent magnet enters air gap, the two jointly
High-coercivity Permanent Magnets magnetic flux is increased across low coercive due to placed magnetic barrier between two kinds of permanent magnets for parallel relationship
The magnetic resistance of power magnetic circuit weakens High-coercivity Permanent Magnets to the demagnetizing effect of low-coercivity permanent magnet, improves low rectify
Stupid power Operating Point of Permanent Magnet, while reducing pulse current amplitude required when motor forward direction magnetizes.
Electric machine rotor iron core 3 is divided into two parts by arc magnetic barrier 8, and a part is the iron core between two magnetic barrier, another portion
The iron core being divided between magnetic barrier and rotor outer circle hinders the effect of redistributing to motor magnetic circuit in order to illustrate magnetic, establishes such as Fig. 2 institute
The empty load of motor equivalent magnetic circuit figure shown: it is gentle that the permanent magnetism magnetic pole of motor is equivalent to sources of magnetic flux and magnetic resistance, electric machine iron core in parallel
Gap is equivalent to magnetic resistance, and motor main magnetic circuit is divided into two parts by arc magnetic barrier 8, wherein φNAnd RNFor high-coercive force permanent magnetism magnetic pole
Equivalent magnetic flux and magnetic resistance, φCAnd RCFor the equivalent magnetic flux and magnetic resistance of low-coercivity permanent magnetism magnetic pole, φNσAnd RNσForever for high-coercive force
The leakage magnetic flux of iron core and leakage field hinder between magnetic magnetic pole, φσAnd RσFor the leakage magnetic flux and leakage field of low-coercivity permanent magnetism magnetic pole top magnetic bridge
Resistance, φδ1For air-gap flux corresponding to high-coercive force permanent magnet flux, Rδ1And Rt1For gas corresponding to high-coercive force permanent magnet flux
Gap magnetic resistance and stator teeth magnetic resistance, φδ2For air-gap flux corresponding to low-coercivity permanent magnet flux, Rδ2And Rt2For low-coercivity
Air-gap reluctance corresponding to permanent magnet flux and stator teeth magnetic resistance, RyFor stator yoke magnetic resistance.
Two parts magnetic circuit is parallel relationship, a part of magnetic flux φδ1It is provided by High-coercivity Permanent Magnets 4, corresponding air gap
Flux density is higher, another part magnetic flux φδ2It is provided by low-coercivity permanent magnet 6, corresponding air gap flux density is lower, therefore motor one
It is a extremely under air gap flux density in ladder be distributed, present embodiment be reasonably arranged arc magnetic barrier 8 position, enable its be located at two kinds forever
The intersection position of magnet is to achieve the purpose that generate the smallest air-gap field distribution of aberration rate.
Although disclosed herein embodiment it is as above, the content is only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (6)
1. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole, including stator core (1), stator winding (2), rotor
Iron core (3) and shaft (9)；Rotor core (3) is fixed on shaft (9), and is located at stator core (1) inside, stator winding (2)
It is arranged on stator core (1)；
It is characterized in that, further include High-coercivity Permanent Magnets (4), High-coercivity Permanent Magnets slot (5), low-coercivity permanent magnet (6),
Low-coercivity permanent magnet trough (7) and arc magnetic barrier (8),
One V-arrangement of every extremely lower setting of rotor core (3), axially through High-coercivity Permanent Magnets slot (5), high-coercive force permanent magnetism
It is directed toward center of circle direction in the V-arrangement tip of body slot (5)；Rotor core (3) it is every extremely it is lower be symmetrical arranged a pair of of rectangle, axially through it is low
Coercivity permanent magnet trough (7), two notches of High-coercivity Permanent Magnets slot (5) respectively with a low-coercivity permanent magnet trough (7)
Connection；Two low-coercivity permanent magnet troughs (7) adjacent under homopolarity are not parallel；
Is provided with High-coercivity Permanent Magnets (4) in High-coercivity Permanent Magnets slot (5), the low-coercivity permanent magnet trough (7) of V-arrangement it is every
One piece of low-coercivity permanent magnet (6), the High-coercivity Permanent Magnets (4) and low-coercivity permanent magnetism of slot connectivity part are respectively set in straight trough
There are air gaps between body (6)；
Same extremely lower two low-coercivity permanent magnet troughs (7) and High-coercivity Permanent Magnets slot (5) enclose the rotor core (3) in region
It is inside symmetrically arranged with a pair of of arc magnetic barrier (8), the arc magnetic barrier (8) is arranged in every extremely lower two kinds of permanent magnet cusps positions, no
Adjacent two arc magnetic barrier (8) is in same on concave arc under homopolarity.
2. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole according to claim 1, which is characterized in that low to rectify
The rectangle short side of stupid power permanent magnet (6) is located at the notch of low-coercivity permanent magnet trough (7).
3. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole according to claim 2, which is characterized in that low to rectify
Rectangle long side of the magnetizing direction of stupid power permanent magnet (6) perpendicular to low-coercivity permanent magnet trough (7), and two neighboring low-coercivity
The magnetizing direction of permanent magnet (6) is opposite；The magnetizing direction of High-coercivity Permanent Magnets (4) is perpendicular to High-coercivity Permanent Magnets slot (5)
Every straight trough long side, and two neighboring High-coercivity Permanent Magnets (4) magnetizing direction on the contrary, it is same extremely under, low-coercivity
Permanent magnet (6) and High-coercivity Permanent Magnets (4) are all the pole N or the pole S.
4. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole according to claim 1, which is characterized in that low to rectify
Stupid power permanent magnet (6) is less than the permanent-magnet material of 250kA/m using coercivity；High-coercivity Permanent Magnets (4) are greater than using coercivity
The permanent-magnet material of 800kA/m.
5. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole according to claim 1, which is characterized in that low to rectify
Stupid power permanent magnet (6) and High-coercivity Permanent Magnets (4) are monolith permanent magnet, or are made of along axial direction muti-piece permanent magnet.
6. the adjustable flux electric machine of magnetic circuit partition type V-type parallel combination magnetic pole according to claim 1, which is characterized in that arc
Magnetic barrier (8) is to fill out inside filling epoxy resin or carbon fiber non-magnet material or slot inside the arc empty slot axially penetrated through or slot
Fill non-conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627971.3A CN109494905B (en) | 2018-12-28 | 2018-12-28 | Magnetic circuit split type V-shaped parallel combined magnetic pole adjustable flux motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627971.3A CN109494905B (en) | 2018-12-28 | 2018-12-28 | Magnetic circuit split type V-shaped parallel combined magnetic pole adjustable flux motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494905A true CN109494905A (en) | 2019-03-19 |
| CN109494905B CN109494905B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811627971.3A Active CN109494905B (en) | 2018-12-28 | 2018-12-28 | Magnetic circuit split type V-shaped parallel combined magnetic pole adjustable flux motor |
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| Country | Link |
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| CN (1) | CN109494905B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994835A (en) * | 2019-12-02 | 2020-04-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN113131640A (en) * | 2019-12-30 | 2021-07-16 | 安徽威灵汽车部件有限公司 | Rotor of motor, driving motor and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441592A (en) * | 2013-08-12 | 2013-12-11 | 浙江大学 | Novel magnetic flux adjustable permanent magnet synchronous motor |
| CN105914984A (en) * | 2016-05-05 | 2016-08-31 | 华中科技大学 | Various magnetic flux-strong magnetic type permanent magnet synchronous motor |
| CN107994703A (en) * | 2017-12-21 | 2018-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
-
2018
- 2018-12-28 CN CN201811627971.3A patent/CN109494905B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441592A (en) * | 2013-08-12 | 2013-12-11 | 浙江大学 | Novel magnetic flux adjustable permanent magnet synchronous motor |
| CN105914984A (en) * | 2016-05-05 | 2016-08-31 | 华中科技大学 | Various magnetic flux-strong magnetic type permanent magnet synchronous motor |
| CN107994703A (en) * | 2017-12-21 | 2018-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994835A (en) * | 2019-12-02 | 2020-04-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN110994835B (en) * | 2019-12-02 | 2021-09-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN113131640A (en) * | 2019-12-30 | 2021-07-16 | 安徽威灵汽车部件有限公司 | Rotor of motor, driving motor and vehicle |
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| CN109494905B (en) | 2021-03-02 |
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