CN100424967C - Radial magnet steel double salient-pole mixed excitation electric machine - Google Patents
Radial magnet steel double salient-pole mixed excitation electric machine Download PDFInfo
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- CN100424967C CN100424967C CNB2006100884417A CN200610088441A CN100424967C CN 100424967 C CN100424967 C CN 100424967C CN B2006100884417 A CNB2006100884417 A CN B2006100884417A CN 200610088441 A CN200610088441 A CN 200610088441A CN 100424967 C CN100424967 C CN 100424967C
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- 230000005284 excitation Effects 0.000 title claims abstract description 69
- 229910000831 Steel Inorganic materials 0.000 title claims description 34
- 239000010959 steel Substances 0.000 title claims description 34
- 230000005291 magnetic effect Effects 0.000 claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 241000239290 Araneae Species 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 3
- 229910000828 alnico Inorganic materials 0.000 abstract 2
- 230000005347 demagnetization Effects 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A radial alnico mixed excitation motor with double salient poles is composed of a stator including a stator back yoke, a tooth yoke, a radial magnetized magnet, an excitation winding and a pivot winding and a rotor including a shaft and a salient-pole rotor to constitute a radial alnico dual salient-pole mixed excitation motor, all of which are put in a case, which has no additional air gap, the magnet path and the excitation path act on different poles, so the leakage is small and the efficiency is high and easy to reach the maximum application and energy-saving effect, when the back yoke is not saturated, the magnet acts on the air gap of the magnetic pole and the excitation also acts on the gap of the excitation only to avoid the danger of demagnetization when the magnet of the ordinary magnet motor is weak.
Description
One, technical field
The radial magnet steel double salient-pole mixed excitation electric machine that the present invention relates to belongs to a kind of double-convex pole hybrid excitation motor.
Two, background technology
Moscow aeronautical engineering institute taught the structure that proposed magnetic potential mixed excitation synchronous generator in parallel in 1988 in Ba Lagunuo days.Stator is identical with common synchronous machine, and rotor is divided into two parts, and a part is a permanent magnet excitation, and another part is electric excitation.This motor characteristic feature: electric excitation division is divided into claw-pole structure, and additional air gap is many, axial magnetic circuit, and leakage field is big, and electric excitation function is restricted.
Japan doctor T.Mizuno etc. has proposed axial/radial magnetic circuit mixed excitation synchronous generator.The stator armature winding of this motor is common three-phase symmetric winding, and stator core is divided into two sections by stator ring DC excitation winding, and this two iron legs heart mechanically with on the magnetic is connected by its outer back of the body yoke (casing that is used for axial magnetic conduction); Rotor is separated into two parts also: N is extreme and S is extreme, and every interpole that is extremely formed by same polarity permanent-magnet pole and iron core is staggered, and the N at two ends, S permanent-magnet pole and interpole also are staggered.One solid flux sleeve letter (rotor back of the body yoke) is arranged between rotor core and rotating shaft, be used for the axial magnetic conduction of rotor.This motor characteristic feature: additional air gap is many, but is fixing air gap; Have the axial/radial magnetic circuit, electric machine structure optimization is tied.
Professor Lipo of Wisconsin-Madison university waits and has proposed a kind of axial magnetic field consequent pole mixed excitation electric machine structure.It is made of the annular stator core (wherein being embedded with the polyphase armature winding) of two flutings, two disk rotors, a DC excitation winding.At the rotor surface interpole that permanent-magnet pole and iron core form that is being staggered.This motor adds that the stator and rotor iron core all is divided into two sections owing to adopted interpole, and additional air gap is many, and power density and stock utilization are difficult to improve.
Also have a kind of double-convex pole hybrid excitation motor, it is to develop to come out on the basis of doubly salient permanent magnet motor, has kept whole advantages of doubly salient permanent magnet motor.This motor can be regulated air-gap field by the direction and the size of control exciting current.But electric energized circuit passes through permanent magnet, and electric excitation efficiency is low.
The old clear spring of Hong Kong University, professor Jiang Jianzhong of Shanghai Polytechnic Univ etc. have proposed a kind of Lundell hybrid exciting synchronous motor.The external stator of this motor and the stator of common electric machine are similar, are embedded with heterogeneous symmetric winding in the groove, and rotor adopts claw-pole structure, places permanent magnet between two adjacent pawl utmost points, is placed with annular DC excitation winding on internal stator.Because the DC excitation winding places in the formed zone, inside and outside unit by the pawl utmost point, space availability ratio height, compact conformation.But owing to there is axial magnetic circuit, electric excitation efficiency is low.
Three, summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art, a kind of motor of having cancelled axial magnetic circuit and additional air gap is provided.This motor permanent magnet excitation and electric energized circuit are separate, thus the excitation efficiency height, and be convenient to the optimal design of electric machine structure, to reach optimum energy-saving effect.
The formation of radial magnet steel double salient-pole mixed excitation electric machine of the present invention be on the stator except the original armature winding of common radial magnet steel double salient-pole magneto and a part of permanent magnetic steel are arranged, also be provided with excitation winding.Constitution principle is to guarantee to have the even number permanent magnetic steel, and has 1 pair of stator poles that excitation source is provided by electric excitation at least.The ratio of permanent magnetic steel number and electric excitation number of poles is big more, and the ratio that then electric excitation partly accounts for is more little, and exciting power is more little; Voltage-regulation scope as generator is more little; Output-constant operation district when moving as motor is also more little.
The concrete formation of this radial magnet steel double salient-pole mixed excitation electric machine, comprise casing, the stator of being made up of stator core, armature winding, excitation winding and radial permanent magnet magnet steel is housed in casing and rotating shaft is housed and place the radial magnet steel double salient-pole mixed excitation electric machine that rotor constituted in the stator by what rotor core was formed, be characterized in having the even number magnet steel, have 1 pair of stator poles that excitation source is provided by electric excitation at least.
Compared with prior art, this radial magnet steel double salient-pole mixed excitation electric machine has following characteristics:
(1), can select different magnet steel numbers and excitation winding number according to the application scenario.Be convenient to realize the optimal design of electric machine structure, reach best energy-saving effect.
(2) when obstructed exciting current, this motor is compared with common radial magnet steel double salient-pole motor and is in weak magnetic state.In addition, exciting current can two-wayly be controlled, and can adapt to wide speed of service requirement.
(3) compare with existing mixed excitation electric machine, do not have axial magnetic circuit and additional air gap, electric excitation efficiency height.
Four, description of drawings
Fig. 1 is 6 utmost point radial magnet steel double salient-pole mixed excitation electric machine sectional views.
Number in the figure title: 1, stator back of the body yoke; 2, permanent magnetic steel; 3, excitation winding; 4, stator tooth yoke; 5, field spider iron core; 6, armature winding; 7, casing; 8, rotating shaft.
Fig. 2 is a radial magnet steel double salient-pole mixed excitation electric machine equivalent magnetic circuit schematic diagram.
Number in the figure title: R
δBe the magnetic resistance of each extremely relative air gap and stator tooth yoke, rotor tooth portion, R
sBe the magnetic resistance of each extremely corresponding stator back of the body yoke, R
PMBe the magnetic resistance of permanent magnetic steel, E
PMBe the permanent magnetic steel magnetic potential, U is electric excitation magnetic potential, φ
1～φ
6Be air-gap flux.
Five, embodiment
As shown in Figure 1, the composition of radial magnet steel double salient-pole mixed excitation electric machine of the present invention is, by being made up of the permanent magnetic steel structure and the distinctive electric excitation structure of common radial magnet steel doubly salient permanent magnet motor on the stator.The i.e. stator of forming by armature winding 6, stator tooth yoke 4, stator back of the body yoke 1, permanent magnetic steel 2, excitation winding 3 and rotating shaft 8 is housed and by forming with field spider iron core 5 rotors of forming of common double salient pole machine same structure, said structure all is loaded in the casing 7.Wherein, must guarantee to have the even number permanent magnetic steel, and exist at least and a pair ofly provide the stator poles of excitation source, on this stator poles, be wound with excitation winding 3 by electric excitation.
In addition, can adjust the number of number of poles, permanent magnetic steel and the excitation winding of motor stator as required.The operation principle of radial magnet steel double salient-pole mixed excitation electric machine
Radial magnet steel double salient-pole mixed excitation electric machine both can be used as generator, also can be used as motor.Can analyze the operation principle of this motor according to equivalent magnetic circuit shown in Figure 2.
If the magnetic resistance of air gap that each is extremely relative and stator tooth yoke, rotor tooth portion is R
δ, the magnetic resistance of the stator back of the body yoke that each is extremely corresponding is labeled as R
sThe magnetic resistance of permanent magnet is labeled as R
PMThe magnetic potential that permanent magnet provides is E
PMThe magnetic potential that excitation winding provides is U.In the equivalent magnetic circuit, ignored the magnetic resistance of rotor yoke.The main magnetic circuit that excitation magnetic potential forms is not by permanent magnet, and it and permanent magnetic potential form relation in parallel in main air gap.
Usually, R is arranged
sMuch smaller than R
δAnd R
PM, for easy analysis can be ignored its influence, i.e. R
s=0.
Deriving 2,3,5,6 extremely relative air-gap fluxs easily from equivalent magnetic circuit is:
1,4 extremely relative air-gap flux is:
The extremely corresponding air-gap flux that permanent magnet is installed remains unchanged.When not applying exciting current, 2,3,5,6 utmost points are in 0 excited state.Apply the forward exciting current and can play and increase magnetic action, can make motor be in weak magnetic state if apply reciprocal exciting current.
Suitably design the physical dimension of motor, can be so that R
PM, R
δAnd R
sRational numerical is arranged.Change exciting current and can control the power of air-gap field effectively.
The advantage of radial magnet steel double salient-pole mixed excitation electric machine
(1) when not adding excitation, only under permanent magnetism magnetic pole, produces air-gap field. Can be by selecting different permanent magnet pole Number is regulated the ratio of electric excitation in the ratio of electric excitation number of poles, and can realize fully weak magnetic.
(2) because permanent magnet and electric magnetic excitation circuit are relatively independent, the magnetic circuit of Exciting Windings for Transverse Differential Protection does not pass permanent magnet, has eliminated forever The possibility that magnet is demagnetized.
(3) when adding the forward exciting current, the air-gap flux under the electric field pole of correspondence is all strengthened, and plays to increase magnetic Effect. And the field ampere-turns that needs when increasing magnetic is consistent with the common electrical excitation biconvex electrode electric machine, because the permanent magnet existence is arranged, Therefore the excitation electric energy requires still less; Compare doubly salient permanent magnet motor, excitation field is easy to regulate, and realizes easily wide accent The speed scope.
Claims (1)
1. radial magnet steel double salient-pole mixed excitation electric machine, comprise casing (7), the stator of being made up of stator back of the body yoke (1), stator diametrical magnetization permanent magnetic steel (2), stator tooth yoke (4) and armature winding (6) is housed in casing (7), and what rotating shaft (8) was housed places the interior rotor of stator by what field spider iron core (5) was formed; It is characterized in that described radial magnet steel double salient-pole mixed excitation electric machine has even number stator diametrical magnetization permanent magnetic steel, and exist at least and a pair ofly provide the stator poles of excitation source by electric excitation, on this stator poles, be wound with excitation winding (3) and do not have stator diametrical magnetization permanent magnetic steel in this stator poles simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100884417A CN100424967C (en) | 2006-08-23 | 2006-08-23 | Radial magnet steel double salient-pole mixed excitation electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100884417A CN100424967C (en) | 2006-08-23 | 2006-08-23 | Radial magnet steel double salient-pole mixed excitation electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1913290A CN1913290A (en) | 2007-02-14 |
| CN100424967C true CN100424967C (en) | 2008-10-08 |
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|---|---|---|---|
| CNB2006100884417A Expired - Fee Related CN100424967C (en) | 2006-08-23 | 2006-08-23 | Radial magnet steel double salient-pole mixed excitation electric machine |
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| CN101552497B (en) * | 2009-05-14 | 2011-04-27 | 浙江大学 | A mixed excitation biconvex pole motor T |
| CN102035274A (en) * | 2010-12-10 | 2011-04-27 | 上海电机学院 | Radial-structure magnetized outer rotor double-salient motor |
| CN102005835A (en) * | 2010-12-10 | 2011-04-06 | 上海电机学院 | Halbach outer rotor doubly salient motor |
| CN103490580A (en) * | 2013-10-11 | 2014-01-01 | 昆山市润苏物资有限公司 | Hybrid excitation doubly salient permanent magnet motor |
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| CN105811611B (en) * | 2016-04-25 | 2018-02-16 | 山东理工大学 | Reclaim the hybrid excitation generator of exhaust energy |
| CN105871119B (en) * | 2016-04-25 | 2018-11-06 | 山东理工大学 | A kind of band pump type permanent-magnet disk generator |
| CN105914946B (en) * | 2016-04-25 | 2018-06-08 | 山东理工大学 | Electrical excitation reluctance type generator of the light truck with vacuum pump |
| CN105896861A (en) * | 2016-04-25 | 2016-08-24 | 山东理工大学 | Hub-type axial excitation permanent magnetic motor |
| CN105790501B (en) * | 2016-04-25 | 2018-03-23 | 山东理工大学 | Magneto with warm-air drier |
| CN105958789A (en) * | 2016-06-13 | 2016-09-21 | 任立峰 | Generator |
| CN106655546B (en) * | 2016-10-31 | 2019-03-15 | 吴强 | A kind of brushless DC generator and electricity-generating method |
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|---|---|---|---|---|
| US4356379A (en) * | 1978-01-13 | 1982-10-26 | Burr-Brown Research Corporation | Integrated heating element and method for thermal testing and compensation of integrated circuits |
| US5825113A (en) * | 1995-07-05 | 1998-10-20 | Electric Power Research Institute, Inc. | Doubly salient permanent magnet machine with field weakening (or boosting) capability |
| JP2001258221A (en) * | 2000-03-10 | 2001-09-21 | Genesis:Kk | Self-starting synchronous motor |
| CN1545189A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Double salient pole mixed excitation motor |
| CN1560987A (en) * | 2004-02-23 | 2005-01-05 | 哈尔滨工业大学 | Mixed excitation switch reluctance motor |
-
2006
- 2006-08-23 CN CNB2006100884417A patent/CN100424967C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356379A (en) * | 1978-01-13 | 1982-10-26 | Burr-Brown Research Corporation | Integrated heating element and method for thermal testing and compensation of integrated circuits |
| US5825113A (en) * | 1995-07-05 | 1998-10-20 | Electric Power Research Institute, Inc. | Doubly salient permanent magnet machine with field weakening (or boosting) capability |
| JP2001258221A (en) * | 2000-03-10 | 2001-09-21 | Genesis:Kk | Self-starting synchronous motor |
| CN1545189A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Double salient pole mixed excitation motor |
| CN1560987A (en) * | 2004-02-23 | 2005-01-05 | 哈尔滨工业大学 | Mixed excitation switch reluctance motor |
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| CN1913290A (en) | 2007-02-14 |
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