CN103117635A - Single transplanted magnetic field hybrid excitation direct current generator - Google Patents
Single transplanted magnetic field hybrid excitation direct current generator Download PDFInfo
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- CN103117635A CN103117635A CN201110364067XA CN201110364067A CN103117635A CN 103117635 A CN103117635 A CN 103117635A CN 201110364067X A CN201110364067X A CN 201110364067XA CN 201110364067 A CN201110364067 A CN 201110364067A CN 103117635 A CN103117635 A CN 103117635A
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Abstract
The invention discloses a single transplanted magnetic field hybrid excitation direct current generator which is mainly applied to direct current generators requiring high reliability and adjustable output voltage. The single transplanted magnetic field hybrid excitation direct current generator is characterized in that the internal magnetic field of the generator is established jointly by two excitation sources, wherein one of the excitation sources is a current-carrying coil, the other one of the excitation sources is a permanent magnet, and then a hybrid excitation structure is formed. According to the single transplanted magnetic field hybrid excitation direct current generator, two groups of excitation poles can independently establish air-gap fields so as to ensure that the generator can still generate power, run and persistently supply power to the most crucial electrical loads when one of excitation modes fails, and the power supplying reliability of the direct current generator is improved; and two groups of the excitation poles form the hybrid excitation structure, the sizes of the air-gap fields can be adjusted, the voltage output by the generator is enabled to be stable; the output voltage regulation rate can be reduced, and the power supplying quality of the generator can be improved.
Description
Technical field
the present invention relates to a kind of DC generator, particularly relate to a kind of magnetic field compound rectifier excitation DC generator of singly planting, belong to the specific type of electric machine technical field, it is mainly used in the vehicular electric power source device that output voltage is adjustable and reliability requirement is high.
Background technology
common electric excitation dc power generator has advantages of that voltage is adjustable, also coordinates field regulator that more stable output voltage can be provided, and still, when the field power supply fault, is difficult to set up voltage.For example military vehicle (is for example gone up) when battery damage, and generator can't generate electricity and cause fire control system and communication system paralyse and lose fighting capacity.
mag-dynamo can not be subject to the restriction of field power supply, but generator voltage can't regulate, do not accomplish the voltage stable at the different rotating speeds State-output yet.
Summary of the invention
purpose of the present invention just is to solve the problems referred to above that prior art exists, and has proposed a kind of magnetic field compound rectifier excitation DC generator of singly planting.This magnetic field compound rectifier excitation DC generator of singly planting that the present invention provides, system adopts the method for permanent magnetism and electric excitation composite excitation, and permanent magnetism magnetic pole and electric excitation pole are all the structures of singly planting magnetic field, be convenient to design respectively and optimize all parts structure, size and function, make generator performance the best, guarantee generator powered stability, reliability and fail safe.
the technical scheme that the present invention provides is: this magnetic field compound rectifier excitation DC generator of singly planting, it is characterized in that: the generator internal magnetic field is set up by two excitation sources are common, an excitation source is the galvanization coil, and an excitation source is permanent magnet, forms the compound rectifier excitation structure.
in order to strengthen the reasonability of such scheme, the present invention also comprises following additional technical feature.
described generator unit stator has two groups of excitation poles, and one group of magnetic pole is around with magnet exciting coil and forms electric field pole, and one group of magnetic pole forms the permanent magnet excitation utmost point with permanent magnet.
two groups of excitation poles of described generator are that electric field pole and the permanent magnet excitation utmost point are alternative arrangements along circumference in casing, to form, singly plant magnetic field structure.
described dynamo field coil exciting current direction is to change by the polarity that changes the exciting voltage applied, and plays and changes the effect that electric field pole produces air-gap field polarity, and then the permanent magnet excitation pole field is increased to magnetic or degaussing.
the voltage swing that the size of described dynamo field coil exciting current is applied to magnet exciting coil by change is adjustable, the amplitude that increases or reduce to control air-gap field, and then size and the stability of adjustment generating voltage.
in described generator, the adjusting that increases the exciting current of magnetic property is conditional, excessive and burn magnet exciting coil to avoid magnetic circuit supersaturation and excitation resistance loss.
in described generator, the adjusting of the exciting current of degaussing character is conditional, to avoid permanent magnet to demagnetize, causes the irrecoverability degaussing lower than the flex point of demagnetization curve to working point.
compared with prior art, the invention has the beneficial effects as follows: two groups of excitation poles of singly planting magnetic field compound rectifier excitation DC generator can be set up separately air-gap field, guaranteeing to break down at a kind of excitation mode is still can generator operation, adhere to the electrical load power supply for most critical, promoted the power supply reliability of DC generator.
beneficial effect of the present invention also is embodied in: two groups of excitation poles of singly planting magnetic field compound rectifier excitation DC generator form the compound rectifier excitation working method, can regulate the size of air-gap field, guarantee that generator output voltage is stable, the effect of the output voltage of reduction regulation is arranged, can improve the generator powered quality.
The accompanying drawing explanation
fig. 1 is embodiments of the invention-mobile generator basic structure schematic diagram.
fig. 2 is embodiments of the invention-mobile generator cross section structure schematic diagram.
distribution of Magnetic Field figure when Fig. 3 is the electric field pole independent excitation of embodiments of the invention-mobile generator.
distribution of Magnetic Field figure when Fig. 4 is embodiments of the invention-mobile generator permanent magnet excitation utmost point independent excitation.
distribution of Magnetic Field figure (increasing magnetic state) when Fig. 5 is embodiments of the invention-mobile generator compound rectifier excitation.
distribution of Magnetic Field figure (demagnetizing state) when Fig. 6 is embodiments of the invention-mobile generator compound rectifier excitation.
magnetic circuit characters curve when Fig. 7 is embodiments of the invention-mobile generator compound rectifier excitation.
number in the figure is described as follows.
1 fan guard, 2 external fans, 3 bearings, 4 brushes, 5 binding posts, 6 armatures, 7 armature winding, 8 rotating shafts, 9 commutators, 10 brush carriers, 11 field poles, 12 casings, 13 internal fans, 14 end caps, 15 armature cores, armature winding in 16 grooves, 17 electric field pole windings, 18 electric field pole pole bodies, 19 electric field pole pole shoes, 20 permanent magnets, 21 permanent magnet excitation utmost point pole bodies, 22 permanent magnet excitation utmost point pole shoes.
Embodiment
further narrate content of the present invention below in conjunction with Figure of description and embodiment.
one embodiment of the present of invention are a kind of Vehicular direct-current generator, its basic structure as shown in Figure 1, mainly consists of fan guard 1, external fan 2, bearing 3, brush 4, binding post 5, armature 6, armature winding 7, rotating shaft 8, commutator 9, brush carrier 10, field pole 11, casing 12, internal fan 13, end cap 14.
one embodiment of the present of invention are a kind of Vehicular direct-current generator, its cross section structure as shown in Figure 2, the embodiment generator is 6 utmost points, wherein, 3 magnetic poles of stator are electric field pole 11d, another 3 magnetic poles are permanent magnet excitation utmost point 11y, and 3 electric field pole 11d and 3 permanent magnet excitation utmost point 11y arrange along circle alternate; Electricity field pole 11d is comprised of electric field pole winding 17, electric field pole pole body 18 and electric field pole pole shoe 19 3 parts, and permanent magnet excitation utmost point 11y is comprised of permanent magnet 20, permanent magnet excitation utmost point pole body 21 and permanent magnet excitation utmost point pole shoe 22 3 parts.Electricity field pole winding 17, is sleeved on electric field pole pole body 18 after the outsourcing insulation by enamelled wire coiling moulding according to the design number of turn, and is compressed and be fixed to casing 12 inboards by screw by 19 pairs of electric field pole windings 17 of electric field pole pole shoe; Electricity field pole pole body 18 with after the electrical pure iron punching press of electric field pole pole shoe 19 by 1-2mm thickness, laminate into whole, permanent magnet excitation utmost point pole body 21 laminates into integrated member separately after punching press respectively with permanent magnet excitation utmost point pole shoe 22 electrical pure irons by 1-2mm thickness, permanent magnet 20 is made by neodymium iron boron, Rare-Earth Cobalt or ferrite hard magnetic material, compressed and be fixed to casing 12 inboards by screw by permanent magnet excitation utmost point pole shoe 22 after magnetizing, tubular casing 12 is made by electrical pure iron or silicon steel sheet.Stator electricity field pole 11d and be paint-dipping drying processing after permanent magnet excitation utmost point 11y installs.
when 3 electric field pole 11d independent excitations, malfunction with respect to permanent magnet excitation utmost point 11y loss of excitation, the generator internal magnetic field distributes as shown in Figure 3, visible, can set up the magnetic field of 6 utmost point features, can generate electricity, resultant magnetic field when just magnetic field intensity may not reach electric field pole 11d and permanent magnet excitation utmost point 11y excited by both, but energy output can be used for maintaining the most basic power demands of onboard system, with magnetic field, all by the generator of permanent magnet excitation, compared, there is higher power supply reliability.
when 3 permanent magnet excitation utmost point 11y independent excitations, malfunction that can't excitation with respect to electric field pole 11d, the generator internal magnetic field distributes as shown in Figure 4, visible, can set up the magnetic field of 6 utmost point features, can generate electricity, resultant magnetic field when just magnetic field intensity may not reach electric field pole 11d and permanent magnet excitation utmost point 11y excited by both, but energy output can be used for maintaining the most basic power demands of onboard system, with magnetic field, all by the generator of electric excitation, compared, there is higher power supply reliability.
when 3 electric field pole 11d and 3 permanent magnet excitation utmost point 11y excited by both, it is the compound rectifier excitation state, the exciting current direction of regulating 3 electric field pole 11d can be so that the magnetic field superposition of compound rectifier excitation increases magnetic state, increase the interior Distribution of Magnetic Field of magnetic state generator as shown in Figure 5, Fig. 4 when Fig. 3 during than 3 electric field pole 11d independent excitations of the magnetic line of force and 3 permanent magnet excitation utmost point 11y independent excitations is dense, illustrates that the generator internal magnetic field is higher.Regulate the size of the exciting current of 3 electric field pole 11d and can regulate the amplitude that compound rectifier excitation increases, and then adjust the size of generating voltage.
the increase that increases the exciting current of magnetic property is conditional, excessive and burn magnet exciting coil to avoid magnetic circuit supersaturation and excitation resistance loss; According to stator pole body, pole shoe, casing and rotor core the difference of applicable material, it is comparatively suitable that the close ratio of magnetic of controlling these positions surpasses 1.8T, depending on cooling condition and heat radiation situation, the electricity of electric excitation winding is close should not surpass 8A/mm
2
.
when 3 electric field pole 11d and 3 permanent magnet excitation utmost point 11y excited by both, it is the compound rectifier excitation state, the exciting current direction of regulating 3 electric field pole 11d can be so that the field weakening of compound rectifier excitation be demagnetizing state, Distribution of Magnetic Field in degaussing magnetic state generator as shown in Figure 6, Fig. 4 when Fig. 3 during than 3 electric field pole 11d independent excitations of the magnetic line of force and 3 permanent magnet excitation utmost point 11y independent excitations is sparse, illustrates that the generator internal magnetic field is lower.Regulate the size of the exciting current of 3 electric field pole 11d and can regulate the amplitude that compound rectifier excitation weakens, and then adjust the size of generating voltage.
the adjusting of the exciting current of degaussing character is conditional, to avoid permanent magnet to demagnetize, causes the irrecoverability degaussing lower than the flex point of demagnetization curve to working point.Fig. 7 is the Magnetic circuit characters curve of Operating Point of Permanent Magnet in the reflection generator, and in embodiment generator permanent magnet excitation utmost point 11y, the material of permanent magnet 20 is N30EH type neodymium iron boron.The working point that the intersection point of permanent magnetic material demagnetization curve and external magnetic circuit BH curve is permanent magnet, (H
0
, B
0
) be the unloaded operation point, (H
e
, B
e
) be load operation point, because each position demagnetization of permanent magnet is inhomogeneous, for avoiding local loss of excitation, cause whole demagnetization, for this reason, the load operation point while taking into account armature reaction and the common demagnetizing effect of electric field pole can not be too low, meet H
e
<0.8H
c
, H
c
for permanent magnet magnetic strength coercive force.
Claims (7)
1. singly plant magnetic field compound rectifier excitation DC generator for one kind, it is characterized in that the generator internal magnetic field set up jointly by two excitation sources, one of them excitation source is the galvanization coil, and another excitation source is permanent magnet, forms the compound rectifier excitation structure.
2. the magnetic field compound rectifier excitation DC generator of singly planting according to claim 1, is characterized in that stator has two groups of excitation poles, and one group of magnetic pole wherein is wound with magnet exciting coil and forms electric field pole, and another group magnetic pole forms the permanent magnet excitation utmost point with permanent magnet.
3. singly plant according to claim 2 magnetic field compound rectifier excitation DC generator, it is characterized in that described two groups of excitation poles, electric field pole and the permanent magnet excitation utmost point are alternative arrangement along circumference in casing, form and singly plant magnetic field structure.
4. singly plant according to claim 2 magnetic field compound rectifier excitation DC generator, it is characterized in that the polarity of voltage that is applied to magnet exciting coil by change, to change the direction of magnet exciting coil exciting current, is increased magnetic or degaussing to the permanent magnet excitation pole field.
5. singly plant according to claim 3 magnetic field compound rectifier excitation DC generator, it is characterized in that being applied to the size of the voltage swing of magnet exciting coil with adjusting magnet exciting coil exciting current by change, regulate the amplitude that the permanent magnet excitation pole field is increased to magnetic or degaussing.
6. singly plant according to claim 5 magnetic field compound rectifier excitation DC generator, the adjusting that it is characterized in that increasing the exciting current of magnetic property is conditional, excessive and burn magnet exciting coil to avoid magnetic circuit supersaturation and excitation resistance loss.
7. singly plant according to claim 5 magnetic field compound rectifier excitation DC generator, the adjusting that it is characterized in that the exciting current of degaussing character is conditional, to avoid permanent magnet to demagnetize, causes the irrecoverability degaussing lower than the flex point of demagnetization curve to working point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110364067XA CN103117635A (en) | 2011-11-17 | 2011-11-17 | Single transplanted magnetic field hybrid excitation direct current generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110364067XA CN103117635A (en) | 2011-11-17 | 2011-11-17 | Single transplanted magnetic field hybrid excitation direct current generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160141584A1 (en) * | 2013-07-25 | 2016-05-19 | Delphi Technologies, Inc. | High Voltage Electrical Center With Connectorized Bulkhead |
| US9602043B2 (en) | 2014-08-29 | 2017-03-21 | General Electric Company | Magnet management in electric machines |
| US9698660B2 (en) | 2013-10-25 | 2017-07-04 | General Electric Company | System and method for heating ferrite magnet motors for low temperatures |
Citations (7)
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|---|---|---|---|---|
| CN1228639A (en) * | 1998-03-09 | 1999-09-15 | 瓦莱奥电机设备公司 | Electrical machine with double excitation, especially motor vehicle alternator |
| CN101127461A (en) * | 2007-07-13 | 2008-02-20 | 南京航空航天大学 | Mixed excitation dual protruding pole brushless DC generator |
| JP2008312307A (en) * | 2007-06-13 | 2008-12-25 | Kura Gijutsu Kenkyusho:Kk | Field-control electromagnetic rotation system |
| CN201374630Y (en) * | 2009-03-12 | 2009-12-30 | 中国电子科技集团公司第二十一研究所 | Speed-change constant-frequency double-feedback permanent-magnetic wind-driven generator system |
| CN101710775A (en) * | 2009-12-16 | 2010-05-19 | 南京航空航天大学 | Hybrid excitation block type stator and rotor switch reluctance machine |
| US20110260672A1 (en) * | 2010-04-26 | 2011-10-27 | Krishnan Ramu | High power density switched reluctance machines with hybrid excitation |
| CN202353414U (en) * | 2011-11-17 | 2012-07-25 | 沈阳工业大学 | Single transplanted magnetic field hybrid excitation direct current generator |
-
2011
- 2011-11-17 CN CN201110364067XA patent/CN103117635A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228639A (en) * | 1998-03-09 | 1999-09-15 | 瓦莱奥电机设备公司 | Electrical machine with double excitation, especially motor vehicle alternator |
| JP2008312307A (en) * | 2007-06-13 | 2008-12-25 | Kura Gijutsu Kenkyusho:Kk | Field-control electromagnetic rotation system |
| CN101127461A (en) * | 2007-07-13 | 2008-02-20 | 南京航空航天大学 | Mixed excitation dual protruding pole brushless DC generator |
| CN201374630Y (en) * | 2009-03-12 | 2009-12-30 | 中国电子科技集团公司第二十一研究所 | Speed-change constant-frequency double-feedback permanent-magnetic wind-driven generator system |
| CN101710775A (en) * | 2009-12-16 | 2010-05-19 | 南京航空航天大学 | Hybrid excitation block type stator and rotor switch reluctance machine |
| US20110260672A1 (en) * | 2010-04-26 | 2011-10-27 | Krishnan Ramu | High power density switched reluctance machines with hybrid excitation |
| CN202353414U (en) * | 2011-11-17 | 2012-07-25 | 沈阳工业大学 | Single transplanted magnetic field hybrid excitation direct current generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160141584A1 (en) * | 2013-07-25 | 2016-05-19 | Delphi Technologies, Inc. | High Voltage Electrical Center With Connectorized Bulkhead |
| US9698660B2 (en) | 2013-10-25 | 2017-07-04 | General Electric Company | System and method for heating ferrite magnet motors for low temperatures |
| US9966897B2 (en) | 2013-10-25 | 2018-05-08 | General Electric Company | System and method for heating ferrite magnet motors for low temperatures |
| US9602043B2 (en) | 2014-08-29 | 2017-03-21 | General Electric Company | Magnet management in electric machines |
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Application publication date: 20130522 |