CN1870385A - Mixing excitation permanent magnetic synchro generator - Google Patents
Mixing excitation permanent magnetic synchro generator Download PDFInfo
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- CN1870385A CN1870385A CNA2006100470337A CN200610047033A CN1870385A CN 1870385 A CN1870385 A CN 1870385A CN A2006100470337 A CNA2006100470337 A CN A2006100470337A CN 200610047033 A CN200610047033 A CN 200610047033A CN 1870385 A CN1870385 A CN 1870385A
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Abstract
A mixed excitation permanent synchronous generator includes a shell, a stator core, a DC excitation winding, a rotor core, a shaft, a stator armature winding and a magnet, in which, the stator and the rotor cores are divided into two sections along the shaft, the segmented stator cores are connected with the shell and a ring DC excitation winding is set between them, the stator armature winding is a three-phase symmetric winding set in the core slots, a solid magnetic sleeve is set on the shaft between the segmented rotor cores, magnet blocks, magnets and ferromagnetic pole combined blocks are distributed in interleaving along the circles of the cores, the polarities of the adjacent magnets are opposite, the magnets and the ferromagnetic poles are arrayed axially in space along the two sections of the rotor cores, namely, the magnet-ferromagnetic pole-magnet and the polarities of the arrayed magnets in space are the same.
Description
Technical field
The invention belongs to technical field of generators, particularly relate to a kind of mixing excitation permanent magnetic synchro generator.
Technical background
The magneto alternator structure mainly contains series excitation formula, shunt excitation formula and composite type mixed excitation electric machine structure at present.Because permanent magnet generator is by permanent magnet excitation, motor is just unadjustable once making magnetic field, and the generating voltage of generator will change along with load and variations in temperature, therefore is difficult to guarantee voltage constant when loaded work piece.People such as G.Hennneberger have proposed a kind of motor of series excitation formula structure, the electric excitation winding of this motor be placed in rotor permanent magnet below, do not need to take additional space, therefore simple in structure, volume is less.But it is brush that the introducing of this construction rotor exciting current employing has, and reliability reduces.The magnetic circuit of this dispatch from foreign news agency excitation is through permanent magnet, and the magnetic permeability of permanent magnet is near the magnetic permeability of air, so the magnetic resistance of magnetic circuit is big, in order to regulate air-gap flux, must feed very big exciting current, and copper loss increases.Simultaneously, electric excitation magnetomotive force directly acts on permanent magnet, and irreversible demagnetization takes place easily.
A kind of shunt excitation formula mixing excitation permanent magnetic synchro generator that Japan scholar Nobuyuki Naoe and Tadashi Fukami propose: its structure can be thought the compound of general permanent magnet generator and electric excitation generator.The magnetic flux of each autoexcitation of exciting current and permanent magnet oneself on the segmentation rotor.But because exciting current is introduced by collector ring, the reliability of motor is reduced, be not suitable for moving under more abominable operating mode, maintenance cost increases.Simultaneously, if when wound rotor length and permanent magnet rotor equal in length, in order to produce the magnetic flux with the permanent magnet equal sizes, the exciting current that feeds wound rotor must be bigger, certainly will increase rotor copper loss, it is big that the temperature rise of motor becomes, and causes the working point of decrease in efficiency, permanent magnet to change thus even cause problem such as demagnetization.
Nanjing Aero-Space University's hole is one flat, Chen Hai town etc. proposes a kind of composite type mixed excitation electric machine structure: its electric excitation auxiliary power generation part and stator core of permanent magnet generator partial common and stator winding, magnetic flux is synthetic in air gap.The electricity excitation is utilized the part of rotating shaft as magnetic circuit, and the structure of permanent magnetism master power generation part is identical with common permanent magnet generator.The motor of this kind structure can be adjusted the output voltage of generator preferably, and operational reliability is higher, and the failure rate ratio has brush configuration and rotating rectifier low.But the both sides of the horizontal magnetic pole that the dynamo-electric excitation division of generating electricity divides all be length than small air gap, processing and assembly precision requirement are very high, when this has obviously increased the assembler and manufacturing cost.Horizontal magnetic pole and vertical pole provide path for electro-magnetic flux simultaneously, need bigger magnetic conductive area, have reduced the power density of motor.Owing to there are two additional air gaps, motor electricity magnetic excitation circuit magnetic resistance is enlarged markedly, cause exciting current bigger, efficiency of motor is not high.
People such as Algeria scholar YacineAmara have proposed a kind of shunt excitation formula mixed excitation electric machine structure, and motor stator structure and rotor structure are all too complicated, and manufacturing and assembly cost significantly increase, and the power density of motor is not high, torque ripple is bigger, and noise is bigger, and leakage field is serious.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the invention provides a kind of mixing excitation permanent magnetic synchro generator, it is by changing the distributed architecture of permanent magnet, can adjust the ratio of permanent magnet and the shared magnetic pole area of electric excitation arbitrarily, make voltage output stable, the efficient height, temperature rise is low.
Structure of the present invention comprises housing, stator core, DC excitation winding, rotor core, rotating shaft, stator armature winding and permanent magnet, stator core is axially fixed on the housing along housing, rotor core places in the interior rotating shaft of stator core, stator core and rotor core all are divided into two sections vertically, the stator core of segmentation is connected with housing respectively, in the rotating shaft between the stator core of segmentation, be equipped with annular DC excitation winding, the stator armature winding is a three-phase symmetric winding, places respectively in each section stator coring groove; Between the rotor core of segmentation, be equipped with solid magnetic conduction sleeve, be staggeredly distributed with permanent magnet blocks and permanent magnet and magnetic pole iron combination block along each section rotor core circumference, the pole polarity of adjacent permanent magnet is opposite, and adjacent permanent magnet N, S stagger extremely mutually, the angle that staggers is less than or equal to a pole span, permanent magnet and magnetic pole iron along the two-stage rotor stalk to being spaced, i.e. permanent magnet-magnetic pole iron-permanent magnet, and spaced permanent magnet pole polarity is identical.
Operation principle of the present invention: set out by magnetic pole iron in the magnetic field that the DC excitation electric current produces, and through air gap, stator, by air gap, finally gets back to adjacent magnetic pole iron again; Have different magnetic circuits with permanent magnet flux, but two magnetic fields are synthetic in the air gap of generator, can regulate the main flux of motor by adjusting exciting current.When load is big, the demagnetizing effect of armature reaction clearly, only rely on the magnetic flux that permanent magnet partly provides and the back electromotive force that produces is not enough, therefore, output voltage by generator itself leads in the DC excitation winding through over commutation, air-gap field is strengthened, thereby make output voltage satisfy the requirement of load.When load hour, the demagnetizing effect of armature reaction is not clearly, thereby causes output voltage with excessive.Therefore, the output voltage by generator itself leads in the DC excitation winding through over commutation, and can be reverse, and air-gap field is weakened, thereby guarantees burning voltage output.
Advantage of the present invention is to have realized non-brushing, the reliability height, and it is dangerous that permanent magnet does not have demagnetization in electric excitation regulation process, and leakage field is little, and electric excitation loss is little, and temperature rise is low, and higher and voltage regulation of power density and voltage-form distortion rate are low.According to the application scenario difference, can adjust the ratio of permanent magnet and the shared magnetic pole area of electric excitation arbitrarily, so that the performance of generator reaches optimum.In the bidirectional modulation process, only need very little DC excitation electric current to regulate magnetic flux, make voltage output stable, the efficient height, temperature rise is low.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is permanent magnet and magnetic pole iron distribution schematic diagram in the rotor core of the present invention;
1. housings among the figure, 2. stator core, 3. DC excitation winding, the 4. permanent magnet N utmost point, 5. rotor core, 6. magnetic conduction sleeve, 7. rotating shaft, 8. the permanent magnet S utmost point, 9. stator armature winding, 10. magnetic pole iron.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Embodiment: as shown in Figure 1, structure of the present invention comprises housing 1, stator core 2, DC excitation winding 3, rotor core 5, rotating shaft 7, stator armature winding 9 and permanent magnet, stator core 2 is axially fixed on the housing along housing, rotor core 5 places in the rotating shaft 7 in the stator core 2, by bearing and sole plate supports, stator core 2 all is divided into two sections vertically with rotor core 5, the stator core 2 of segmentation is connected with housing 1 respectively, and mechanically with on the electromagnetism be connected by housing 1, between the stator core 2 of segmentation, be equipped with annular DC excitation winding 3, stator armature winding 9 is a three-phase symmetric winding, place respectively in the groove of each section stator core 2, in the rotating shaft between the rotor core 5 of segmentation, be equipped with solid magnetic conduction sleeve 6, the axial magnetic conduction that is used for rotor, be staggeredly distributed with permanent magnet blocks and permanent magnet and magnetic pole iron 10 combination block along each section rotor core 5 circumference, the pole polarity of adjacent permanent magnet is opposite, it is permanent magnet N utmost point piece, the permanent magnet S utmost point and magnetic pole iron 10 combination block are spaced on the circumference of rotor core 5, and adjacent permanent magnet N, S staggers extremely mutually, and the angle that staggers is a pole span; Permanent magnet and magnetic pole iron 10 are arranged along two-stage rotor 5 axially spaced-aparts unshakable in one's determination, it is permanent magnet-magnetic pole iron-permanent magnet, and spaced permanent magnet pole polarity is identical, specifically being arranged as in this example: the permanent magnet N utmost point-magnetic pole iron combination block, the permanent magnet N utmost point, the permanent magnet S utmost point, magnetic pole iron-permanent magnet S utmost point combination block, each two row was arranged along the circle spacing, guaranteed that the direction of magnetization of the permanent magnet under same coil is identical, formed this routine mixing excitation permanent magnetic synchro generator.
Its operation principle: set out by magnetic pole iron in the magnetic field that the DC excitation electric current produces, and through air gap, stator, by air gap, finally gets back to adjacent magnetic pole iron again; Have different magnetic circuits with permanent magnet flux, but two magnetic fields are synthetic in the air gap of generator, can regulate the main flux of motor by adjusting exciting current.
The present invention utilizes the DC excitation winding to adjust generating voltage, the generating voltage that produces when permanent magnet excitation is lower than rated voltage when working, then can be by making soft iron magnetic pole and permanent magnet pole homophase by sense of current in the control DC excitation winding, at this moment the DC excitation winding starting increases the effect of magnetic; When the voltage of permanent magnet excitation generation is higher than rated voltage when working, then can be by making the soft iron magnetic pole opposite by sense of current in the control DC excitation winding with permanent magnet pole, at this moment the DC excitation winding plays demagnetizing effect, so just can come the magnetic field of regulator generator easily, make generator under the situation of load and variations in temperature, keep constant by the size and Orientation of electric current in the control DC excitation winding.
Claims (2)
1, a kind of mixing excitation permanent magnetic synchro generator, comprise housing, stator core, the DC excitation winding, rotor core, rotating shaft, stator armature winding and permanent magnet, stator core is axially fixed on the housing along housing, rotor core places in the interior rotating shaft of stator core, stator core and rotor core all are divided into two sections vertically, the stator core of segmentation is connected with housing respectively, it is characterized in that between the stator core of segmentation, being equipped with annular DC excitation winding, the stator armature winding is a three-phase symmetric winding, place respectively in each section stator coring groove, in the rotating shaft between the rotor core of segmentation, be equipped with solid magnetic conduction sleeve, be staggeredly distributed with permanent magnet blocks and permanent magnet and magnetic pole iron combination block along each section rotor core circumference, the pole polarity of adjacent permanent magnet is opposite, permanent magnet and magnetic pole iron along the two-stage rotor stalk to being spaced, be permanent magnet-magnetic pole iron-permanent magnet, and spaced permanent magnet pole polarity is identical.
2, a kind of mixing excitation permanent magnetic synchro generator according to claim 1 is characterized in that described rotor core two ends adjacent opposite polarity permanent magnet N, S stagger extremely mutually, and the angle that staggers is less than or equal to a pole span.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100470337A CN100370680C (en) | 2006-06-26 | 2006-06-26 | Mixing excitation permanent magnetic synchro generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100470337A CN100370680C (en) | 2006-06-26 | 2006-06-26 | Mixing excitation permanent magnetic synchro generator |
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| Publication Number | Publication Date |
|---|---|
| CN1870385A true CN1870385A (en) | 2006-11-29 |
| CN100370680C CN100370680C (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100470337A Expired - Fee Related CN100370680C (en) | 2006-06-26 | 2006-06-26 | Mixing excitation permanent magnetic synchro generator |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315739A (en) * | 2011-08-26 | 2012-01-11 | 北京航空航天大学 | Hybrid excitation generator |
| CN102420511A (en) * | 2011-12-31 | 2012-04-18 | 何嘉颖 | Mixed-excitation magnetic pole structure |
| CN101752916B (en) * | 2009-12-30 | 2012-07-04 | 沈阳工业大学 | Composite excitation permanent magnet wind power generator with combined stator and rotor sructure |
| CN102651597A (en) * | 2011-02-24 | 2012-08-29 | 株式会社东芝 | Permanent-magnet type electric rotating machine |
| CN103560637A (en) * | 2013-11-20 | 2014-02-05 | 中国人民解放军海军工程大学 | Mixed excitation synchronous generator high in power density |
| CN104040851A (en) * | 2012-02-29 | 2014-09-10 | 爱信艾达株式会社 | Hybrid excitation-type rotating electric machine |
| CN104881524A (en) * | 2015-05-13 | 2015-09-02 | 徐纪法 | Software for calculating magnetic parameter of double-source magnetic circuit |
| CN104904104A (en) * | 2013-01-14 | 2015-09-09 | 罗伯特·博世有限公司 | Coil former for a field coil, field coil arrangement, insulation mask, stator arrangement and also stator for a homopolar machine |
| CN105305757A (en) * | 2015-11-30 | 2016-02-03 | 郑州轻工业学院 | Double cross hybrid excitation motor |
| CN105978274A (en) * | 2016-06-28 | 2016-09-28 | 无锡新大力电机有限公司 | Mixed excitation permanent magnet synchronous motor |
| CN109167499A (en) * | 2018-09-15 | 2019-01-08 | 天津大学 | A kind of New single-phase synchronous generator and three-phase synchronous generator |
| CN112398302A (en) * | 2020-12-10 | 2021-02-23 | 沈阳工业大学 | Wide speed regulation range hybrid excitation synchronous motor |
| CN113300532A (en) * | 2021-05-26 | 2021-08-24 | 华中科技大学 | Stator electro-magnetic flywheel energy storage motor |
| CN113708527A (en) * | 2021-09-02 | 2021-11-26 | 哈尔滨工业大学（威海） | Non-salient pole type electro-magnetic wound rotor and synchronous motor thereof |
| CN114825678A (en) * | 2022-05-05 | 2022-07-29 | 杨培应 | Electric generator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005834B (en) * | 2010-11-26 | 2012-10-31 | 南京航空航天大学 | Hybrid excitation doubly salient motor adopting axial excitation |
| CN102035270B (en) * | 2010-12-17 | 2012-11-14 | 南京航空航天大学 | Axial excitation double salient pole motors |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06351206A (en) * | 1993-04-14 | 1994-12-22 | Meidensha Corp | Hybrid excitation-type permanent-magnet synchronous rotating machine |
| CN1263373A (en) * | 2000-03-03 | 2000-08-16 | 广东工业大学 | New type composite excitation brushless direct-current machine |
-
2006
- 2006-06-26 CN CNB2006100470337A patent/CN100370680C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752916B (en) * | 2009-12-30 | 2012-07-04 | 沈阳工业大学 | Composite excitation permanent magnet wind power generator with combined stator and rotor sructure |
| CN102651597A (en) * | 2011-02-24 | 2012-08-29 | 株式会社东芝 | Permanent-magnet type electric rotating machine |
| CN102315739A (en) * | 2011-08-26 | 2012-01-11 | 北京航空航天大学 | Hybrid excitation generator |
| CN102420511A (en) * | 2011-12-31 | 2012-04-18 | 何嘉颖 | Mixed-excitation magnetic pole structure |
| CN104040851A (en) * | 2012-02-29 | 2014-09-10 | 爱信艾达株式会社 | Hybrid excitation-type rotating electric machine |
| CN104040851B (en) * | 2012-02-29 | 2016-10-19 | 爱信艾达株式会社 | Hybrid power excitation-type electric rotating machine |
| CN104904104B (en) * | 2013-01-14 | 2018-06-08 | 罗伯特·博世有限公司 | For the bobbin of magnet exciting coil, excitation coil structure, isolation cover, stator apparatus and the stator for homopolar machine |
| CN104904104A (en) * | 2013-01-14 | 2015-09-09 | 罗伯特·博世有限公司 | Coil former for a field coil, field coil arrangement, insulation mask, stator arrangement and also stator for a homopolar machine |
| CN103560637A (en) * | 2013-11-20 | 2014-02-05 | 中国人民解放军海军工程大学 | Mixed excitation synchronous generator high in power density |
| CN103560637B (en) * | 2013-11-20 | 2016-05-25 | 中国人民解放军海军工程大学 | A kind of mixed excitation synchronous generator of high power density |
| CN104881524A (en) * | 2015-05-13 | 2015-09-02 | 徐纪法 | Software for calculating magnetic parameter of double-source magnetic circuit |
| CN105305757A (en) * | 2015-11-30 | 2016-02-03 | 郑州轻工业学院 | Double cross hybrid excitation motor |
| CN105978274A (en) * | 2016-06-28 | 2016-09-28 | 无锡新大力电机有限公司 | Mixed excitation permanent magnet synchronous motor |
| CN109167499A (en) * | 2018-09-15 | 2019-01-08 | 天津大学 | A kind of New single-phase synchronous generator and three-phase synchronous generator |
| CN112398302A (en) * | 2020-12-10 | 2021-02-23 | 沈阳工业大学 | Wide speed regulation range hybrid excitation synchronous motor |
| CN112398302B (en) * | 2020-12-10 | 2023-09-12 | 沈阳工业大学 | Mixed excitation synchronous motor with wide speed regulation range |
| CN113300532A (en) * | 2021-05-26 | 2021-08-24 | 华中科技大学 | Stator electro-magnetic flywheel energy storage motor |
| CN113708527A (en) * | 2021-09-02 | 2021-11-26 | 哈尔滨工业大学（威海） | Non-salient pole type electro-magnetic wound rotor and synchronous motor thereof |
| CN113708527B (en) * | 2021-09-02 | 2022-09-20 | 哈尔滨工业大学（威海） | Non-salient pole type electro-magnetic wound rotor and synchronous motor thereof |
| CN114825678A (en) * | 2022-05-05 | 2022-07-29 | 杨培应 | Electric generator |
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| CN100370680C (en) | 2008-02-20 |
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