CN102480199A - Hybrid excitation brushless single phase synchronous generator with novel structure - Google Patents
Hybrid excitation brushless single phase synchronous generator with novel structure Download PDFInfo
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- CN102480199A CN102480199A CN2010105632298A CN201010563229A CN102480199A CN 102480199 A CN102480199 A CN 102480199A CN 2010105632298 A CN2010105632298 A CN 2010105632298A CN 201010563229 A CN201010563229 A CN 201010563229A CN 102480199 A CN102480199 A CN 102480199A
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Abstract
The invention discloses a hybrid excitation brushless single phase synchronous generator with a novel structure. The hybrid excitation brushless single phase synchronous generator is suitable for being used as a standby power supply of a generator set of a gasoline engine. The hybrid excitation brushless single phase synchronous generator is characterized by adopting a structure of double stators and a hollow permanent magnet rotor and a hybrid excitation mode of rare earth permanent magnet and induction brushless electrical excitation; a single phase winding 3 and a single winding 4 are embedded into an inner stator core 2 and an outer stator core 5; a rotor is in a permanent magnet type hollow cylindrical structure and is arranged between the inner stator and the outer stator; a magnetic circuit is in a hybrid magnet circuit structure which is closed by directly connecting two heteropolar surfaces of a plurality of rows of copolar permanent magnets 6 arranged in parallel to form a magnetic pole with two stators through an inner air gap and an outer air gap; various magnetic poles are riveted by using stainless steel connecting rings 8 to form a cylindrical shape; the permanent magnets provide a no-load air gap magnetic field phi0 under each magnetic pole; and a strong excitation magnetic field phib for maintaining negative voltage to be stable is generated by a negative sequence magnetic field for inducing a load by an electrical excitation winding 10 near a rear pole piece of a hollow permanent magnet rotor along the rotating direction through excitation current provided by half wave rectification of a diode 11.
Description
Technical field
The present invention is a kind of brushless single phase synchronous generator of compound rectifier excitation with high power density and compound excitation stabilized voltage characteristic, new structure, with gasoline engine or the supporting composition generating set of diesel engine, can be used as portable power supplies and spare emergent power source and uses.
Background technology
At present, gasoline engine generator industry mainstream model be with copper cash and aluminum steel be the master have the brush electric excitation generator type, power bracket contains 1kW～20kW; In addition, be the small-sized single phase synchronous generator group of 1～5kW for power, also have and a kind ofly adopt the negative phase-sequence magnetic field that rotor-exciting winding induction stator load current sets up and carry out the brush-less electrically exciting mode of rectified current excitation.
Adopt AVR regulate exciting current the single-phase or threephase alternator of the electric excitation of brush is arranged is the main flow excitation mode of gasoline engine generator group; The sharpest edges of this generator are exactly that automatic adjustment can be realized through regulating rotor excitation current in its magnetic field, thereby make the generator of unit operation keep the stable of output voltage to the gamut of nominal load in zero load.Fig. 5 is that the tradition that prior art generally adopts has the electric excitation AC synchronous generator structural principle sketch map of brush, and among the figure: label 4 is the stator main winding, and label 5 is a stator core; Label 21 is brush and collector ring; Label 22 is the stator auxiliary winding, and label 23 is the AVR excitation voltage regulator, and label 24 is an excitation winding; Label 25 is a rotor core, and label 26 is for driving rotating shaft.This type generator core component is stator and each cover of rotor; Stator main winding 4 and excitation winding 24 that copper cash or aluminum steel are made are set on its stator core 5 and the rotor core 25; Stator main winding 4 external supply capabilities wherein; Epitrochanterian excitation winding 24 is used for setting up motor gas-gap magnetic field, makes motor produce electromagnetic induction, and the stator and rotor iron core belongs to magnetic conductive part; The two heteropolarity magnetic pole and magnetic fields that the electricity excitation produces partly constitute closed magnetic circuit through the rotor core yoke, and rotor core 25 is fixed in and drives in the rotating shaft 26.Simultaneously, be to regulate magnetic field, parts such as also must the configuration corresponding stator auxiliary winding of generating set 22, AVR voltage regulator 23, the brush of introducing rotor current and collector ring 21.
Fig. 6 is a kind of conventional brushless complete electric excitation type single-phase generator structural principle sketch map that generally adopts, and among the figure: label 4 is the stator main winding, and label 5 is a stator core; Label 11 is a diode; Label 22 is the stator auxiliary winding, and label 24 is an excitation winding, and label 25 is a rotor core; Label 26 is for driving rotating shaft, and label 27 is a capacitor.The single-phase main winding of stator that copper cash or aluminum steel make 4, auxiliary winding 22 and excitation winding 24 are set on stator core 5 and rotor core 25; Stator main winding 4 external supply capabilities wherein; Rotor-exciting winding 24 is used for setting up motor gas-gap magnetic field; Make motor produce electromagnetic induction, the stator and rotor iron core belongs to magnetic conductive part, and rotor core is fixed and driven in the rotating shaft 26.During empty load of motor; Rotor remanent magnetism progressively produces induced potential in auxiliary winding, auxiliary winding 22 constitutes the monophase current loop with the electric capacity that is connected in series 27, and this monophase current will produce the opposite positive and negative preface magnetic field of direction of rotation respectively in air gap; And the alternating potential of doubled frequency will be responded in negative phase-sequence magnetic field in rotor-exciting winding 24; Diode 11 through being serially connected with rotor-exciting winding two ends constitutes the halfwave rectifier loop, crosses direct current in the rotor-exciting loop stream, keeps floating voltage U thereby produce
NStable unloaded air-gap field.During motor load; The stator main winding flows through the single-phase load electric current equally; Same principle and electromagnetic induction process during with zero load; To in the rotor-exciting winding, flow through the load exciting current that is directly proportional with the stator load current, keep generator voltage U thereby in motor gas-gap, produce an additional reinforced load magnetic field
NStable in certain limit; Wherein, the wiring direction in diode 11 halfwave rectifier loops is decided by motor-field N, S extreme direction and the sense of current.
More than the generator excitation capacity of two kinds of complete electric excitation modes bigger; The loss ratio of rotor electricity energized circuit accounts for 55%～65% of the whole losses of motor; Therefore the energy efficiency of generator is difficult to improve; And the type generator amature copper consumption also accounts for 55%～65% of the whole copper consumptions of motor, so its cost is also higher, the resource consumption of non-ferrous metals such as copper, aluminium is also big.China is the abundantest country of rare earth permanent-magnetic material in the world, but also is simultaneously the poor countries of nonferrous metal resources such as copper, aluminium; Therefore, the application of greatly developing rare earth material has realistic meanings to China.Progress along with control technology; Rare-earth permanent-magnet electric machine drives the field in the motor industry and is used widely, the motor product that rare earth permanent-magnetic material is made, and the power density that its unit volume material transmits is big; Electric efficiency height and energy consumption is little demonstrates the huge superiority of its rare-earth electric motor; But rare earth permanent-magnetic material is used the 'bottleneck' restrictions that electrical generator fields receives the voltage stabilization technique always; Because the generator field that permanent magnetic material is processed can't be regulated; Thereby cause very difficulty of generator voltage control; Voltage descends terribly behind the motor bringing onto load, and then influences the power generating quality of permanent magnet generator unit, has limited the range of application of permanent magnetic material on this type of generator.And, adopt rare earth material to replace electric excitation generator rotor winding simply by the conventional motors convention, also can not fully and up hill and dale utilize rare earth material to transmit the advantage of high-energy-density.Therefore, expand the range of application of rare earth material and just must must solve following technical barrier: one, be the advantage that makes full use of rare earth material, must research and design can transmit the permanent magnet generator new structure of high power density in the portable power source field of independent operating; Two, research overcomes magneto and can't regulate magnetic field and the technological approaches and the effective ways of stable generator voltage.
Summary of the invention
Problem to existing permanent magnet generator machine technology existence; The objective of the invention is to middle-size and small-size gasoline engine generator group is support, provides a kind of and transmits high power density and have the brushless single phase synchronous generator of the new structure compound excitation stabilized voltage characteristic, " inside and outside pair of stator+hollow p-m rotor " structure and " rare earth permanent magnet+induction brush-less electrically exciting " compound rectifier excitation mode.Basic design of the present invention is to break through the conventional motors one theory that must constitute yoke portion magnetic circuit between the conventional magneto heteropolarity permanent magnet with ferromagnetic material; Directly utilize the characteristic of rare-earth permanent magnet two sides heteropolarity; Between inside and outside two stators and hollow p-m rotor, set up simultaneously inside and outside two it encourage the air gap main field; Its specific structural features is: generator adopts the compound rectifier excitation mode of " two stators+hollow p-m rotor " structure and " rare earth permanent magnet+induction brush-less electrically exciting "; The single-phase winding of setting-in on the inside and outside stator core; Rotor is a magneto open circles barrel shaped structure; Be installed between inside and outside two stators, magnetic circuit is multi-disc two heteropolarity faces that the same polarity permanent magnet that constitutes a magnetic pole is installed side by side through direct two stators of series connection and the composite magnetic circuit structure of closure becomes the drum shape with stainless steel connecting ring rivet welding between each magnetic pole of inside and outside air gap; Permanent magnet provides the unloaded air-gap field Φ under every magnetic pole
0, keep the stable magnet excitation field Φ of load voltage
bNegative phase-sequence magnetic field during by near the electric excitation winding inductive load the pole shoe behind the hollow p-m rotor of conrotatory veer and the exciting current that after the diode halfwave rectifier, provides and produce.The hollow p-m rotor of the permanent-magnetic AC synchronous generator of this new structure does not have the yoke iron core; The rotor yoke iron core part material of conventional motors just in time is used to increase internal stator, thereby makes generator have the big and few clear superiority of material consumption of power density.
For achieving the above object, illustrate generator techniques scheme and the characteristics that the present invention relates to below in conjunction with accompanying drawing:
One, Fig. 1 is the structural principle sketch map of the brushless single phase synchronous generator of compound rectifier excitation of the new structure that the present invention relates to; Generator is " the hollow p-m rotor of two stators+no yoke iron core " structure; Hollow p-m rotor is installed between inner-stator iron core and the external stator core; And air gap is arranged all between two stators; The generator magnetic circuit is multi-disc two heteropolarity faces that the same polarity permanent magnet 6 that constitutes a magnetic pole is installed side by side through inside and outside air gap directly two stators of series connection and closed composite magnetic circuit structure, and the same polarity rare-earth permanent magnet that multi-disc is installed side by side provides and can guarantee under every magnetic pole that the interior single-phase winding of external stator induces the unloaded air-gap field Φ of specified floating voltage
0, two stators of this structure are equal to two generator unit stators fully, and Fig. 3 has shown the three-dimensional deployed configuration sketch map of inside and outside pair of stator core of this type of single-phase AC synchronous alternator.Equal setting-in two overlaps independently winding on inner-stator iron core and the external stator core, and two cover stator winding are connected into 120.The single phase alternating current (A.C.) winding construction of facies tract distribution, the main winding in permanent-magnetic field will cut simultaneously when hollow p-m rotor rotates on the external stator, thus external stator all can external simultaneously conveying electrical power in making.
Two, Fig. 2 has showed the axial arrangement installation diagram of the brushless single phase synchronous generator of compound rectifier excitation of new structure involved in the present invention; Fig. 4 is that the stereochemical structure of hollow p-m rotor and internal stator assembling is launched sketch map; Hollow p-m rotor two ends vertically is equipped with forward and backward runing rest, and is connected with the internal stator back shaft through rolling bearing; This hollow p-m rotor adopts multi-disc same polarity magnet to form the magnet arrangements mode of a magnetic pole; Magnet is dull and stereotyped rectangular configuration and is embedded in the rectangle square groove in the magnetic pole magnetic guiding loop of being processed by ferromagnetic material; Magnetic circuit is the composite magnetic circuit structure of the parallel connection of same polarity magnet, the series connection of heteropolarity magnet; Same polarity magnet parallel connection number and the size of forming each magnetic pole is decided by motor pole number and pole embrace, generate electricity required magnetic flux and permanent magnet manufacture process requirement, and rivet welding becomes whole drum shape to adopt non-magnetic stainless steel connecting ring to connect also between the different polarity poles; The inside and outside appropriate location of forward and backward runing rest is provided with radial gusset, and preceding runing rest is connected with the gasoline engine power output shaft and is equipped with radiator fan, to strengthen the radiating effect of internal stator and rotor.
Three, in Fig. 1 and sketch map shown in Figure 4; The excessive defective of voltage drop during for the load of solution permanent magnet generator; The present invention designs the electric field pole of having introduced an additive excitation on sleeve rotor magnetic pole magnetic guiding loop; Its architectural feature is that hollow p-m rotor magnetic pole magnetic guiding loop adopts unsymmetric structure; Near the back pole shoe of each magnetic pole magnetic guiding loop of conrotatory veer, be provided with line embedding groove, electric excitation winding is installed in the groove, this winding line end to end is connected to form half-wave rectifying circuit by the magnetic field and the sense of current by diode.During motor load; The monophase current that the single-phase main winding of stator flows through will produce the opposite positive and negative preface magnetic field of direction of rotation respectively in air gap; And the alternating potential of doubled frequency will be responded in negative phase-sequence magnetic field in the auxiliary electrical magnetic part winding of hollow p-m rotor; Through in this additive excitation winding, flowing through direct current after the diode halfwave rectifier, keep load voltage U thereby produce
NThe load stable in certain limit replenishes magnetic field Φ
bAdopt the techno-economic effect that technique scheme reached to be:
One, product technology performance advantage and effect
The present technique invention is applicable to that power is that 1～12kW, iron core cylindrical are the Singe-Phase Gasoline Generator group of specification series such as Φ 160, Φ 190 and Φ 270; Utilize the generating set of this art designs can reach the described design performance index of table 1, power density that its unit materials consumption is exported and generator energy conversion efficiency obviously are superior to traditional electrical excitation generator group performance.
The material consumption of table 1 generator, energy efficiency and power output contrast table
Present technique invention product is because rotor has reduced the electric excitation capacity of conventional rotors; So the resistance heating loss of sleeve rotor excitation winding is very little, and the Savonius rotors moment of inertia is little, the generator mechanical loss is reduced significantly; So electric efficiency improves, temperature rise is significantly descended.
Owing to cancelled parts such as AVR excitation voltage regulator, brush and collector ring; There have not been the rotor component wearing and tearing of conventional electric generators; Faults such as the common turn-to-turn short circuit of rotor charged winding, insulation breakdown have also thoroughly been stopped; And defective such as AVR voltage regulator electronic component inefficacy, thereby improved the whole aircraft reliability of generator, and make the user safeguard and simply.
Two, the Financial cost advantage and the effect of product
Use the present invention technology can make generator amature practice thrift copper cash cost, insulating material and insulating treatment process cost, reduces rotor brush and collector ring simultaneously, and the integrated cost that unit materials consumes is than descending more than 30% with capacity copper cash generator.
Description of drawings
Fig. 1 is the structural principle sketch map of " the brushless single phase synchronous generator of the compound rectifier excitation of new structure " that the present invention relates to;
Fig. 2 is the axial arrangement installation diagram of " the brushless single phase synchronous generator of the compound rectifier excitation of new structure " involved in the present invention;
Fig. 3 is the three-dimensional sketch mapes that launch of " the brushless single phase synchronous generator of the compound rectifier excitation of new structure " involved in the present invention two stator core constructions;
Fig. 4 is that the solid of " the brushless single phase synchronous generator of the compound rectifier excitation of new structure " hollow p-m rotor involved in the present invention and internal stator assembly structure is launched sketch map;
More than among the figure: 1. internal stator back shaft, 2. inner-stator iron core, the 3. single-phase winding of internal stator, the 4. single-phase winding of external stator, 5. external stator core; 6. rare-earth permanent magnet, 7. damping copper bar and end ring, 8. stainless steel connecting ring, 9. magnetic pole magnetic guiding loop, 10. additive excitation winding; 11. diode, 13. fans, 14. preceding runing rests, 15. back runing rests, 16. back mounting brackets; 17. the motor bonnet, 18. rolling bearings, 19. long bolts, 20. output shaft of gasoline engine.
Fig. 5 is that the tradition of prior art has the complete electric excitation AC synchronous generator structural principle sketch map of brush;
Among the figure: 4. stator main winding, 5. stator core, 21. brushes and collector ring, 22. stator auxiliary winding, the 23.AVR excitation voltage regulator, 24. excitation winding, 25. rotor cores, 26. drive rotating shafts.
Fig. 6 is the traditional brushless complete electric excitation type single-phase generator structural principle sketch map of prior art;
Among the figure: 4. stator main winding, 5. stator core, 11. diodes, 22. stator auxiliary winding, 24. excitation winding, 25. rotor cores, 26. drive rotating shafts, 27. capacitors.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation:
In the embodiment that Fig. 1, Fig. 2, Fig. 3 and Fig. 4 showed; The compound rectifier excitation of new structure of the present invention is brushless, and single phase synchronous generator external stator core 5 is basic identical with traditional electric excitation synchronous generator with external stator principal phase winding 4; Only stationary part size and coil parameter change with electric machine structure and permanent magnetic material performance to some extent; Basically each ready-made serial state stator be can continue to use, seriation, standardized production are convenient to.
Generator according to the invention has the brush electric excitation generator with tradition, and different are final assembly structure and assembly technology, hollow permanent magnet rotor structure and internal stator structure:
At first; At the generator shaft that the present invention relates to shown in Figure 2 in assembly structure figure; The complete machine structure characteristic of this generator is: " the hollow p-m rotor of two stators+no yoke iron core " structure, its magnetic circuit connected mode are that two stators of the direct series connection of two heteropolarity faces of permanent magnet constitute closed magnetic circuit.This assembly technology that has determined this generator is than conventional motors somewhat more complicated, and assembly technology requires also higher relatively, and it is following to describe its assembly technology flow process in conjunction with Fig. 1, Fig. 2 and Fig. 4:
The preceding runing rest 14 of the 1st step, dress band fan 13 is on output shaft of gasoline engine 20;
The 2nd step, dress comprise the internal stator assembly of internal stator back shaft 1, inner-stator iron core 2 and the single-phase winding 3 of internal stator;
The 3rd step, dress comprise the hollow barrel-shaped rotor assembly of permanent magnet 6, amortisseur bar and end ring 7, stainless steel connecting ring 8, magnetic pole magnetic guiding loop 9, additive excitation winding 10;
The 4th step, dress back runing rest 15 and fastening long bolt 19;
The 5th step, dress comprise the external stator assembly of external stator core 5 and the single-phase winding 4 of external stator;
The 6th goes on foot, adorns afterwards mounting bracket 16 and fixedly internal stator assembly;
The 7th step, the inside and outside stator lead-out wire of connection also install motor bonnet 17.
The second, in the embodiment that Fig. 1 and Fig. 4 showed, the hollow barrel-shaped permanent magnet rotor structure that the present invention relates to is the core of present technique invention, and technical characterictic and implementation method that it is crucial are following:
One, launch in the sketch map in the hollow p-m rotor stereochemical structure of Fig. 4, hollow p-m rotor is made up of parts such as rare-earth permanent magnet 6, magnetic pole magnetic guiding loop 9, stainless steel connecting ring 8, amortisseur bar and end ring 7, additive excitation winding 10, diode 11, fan 13, preceding runing rest 14, back runing rests 15.
Two, permanent magnet material is selected the sintered neodymium iron boron material of extensive use; It is for improving the rareearth magnetic material utilance that magnet steel is designed to dull and stereotyped rectangular configuration one; Also simplify simultaneously the magnet steel manufacturing process; Make cost be suitable for producing in enormous quantities, permanent magnet 6 is embedded in the rectangle square hole of the magnetic pole magnetic guiding loop of being processed by ferromagnetic material 9 when assembling, and the rotor assembly technology is simple.
Three, referring to Fig. 1; The circular corner silicon steel plate punching out of magnetic pole magnetic guiding loop 9 after by interior external stator blanking becomes the punching shape; Be distributed with the line embedding groove at a plurality of magnet steel square holes, damping cylindrical void, separated magnetic hole, pole shoe position, back and the dovetail of two ends and 8 riveted joints of stainless steel connecting ring on it; Magnetic pole magnetic guiding loop rectangle square groove both sides silicon steel material is asymmetric also unequal; Back pole shoe position is provided with two line embedding grooves; Should place the back pole shoe position of each magnetic pole during assembling according to the motor direction of rotation, the magnetic pole magnetic guiding loop 9 of sheet adopts to laminate with the isometric back argon arc welding of interior external stator core and is connected into integral body, promptly constitutes a magnetic pole after assembling with multi-disc same polarity permanent magnet 6; The same polarity magnet parallel connection number and the size of each magnetic pole is decided by motor pole number and pole embrace, generate electricity required magnetic flux and permanent magnet manufacture process requirement, and the single-phase winding of external stator induced the unloaded air-gap field Φ of specified floating voltage in the same polarity rare-earth permanent magnet that multi-disc is installed side by side provided and can guarantee under every magnetic pole
0
Four, referring to Fig. 4, behind the stainless steel connecting ring 8 dovetail riveteds of processing by two non-magnet_conductible materials between the different polarity poles of hollow p-m rotor again argon arc welding be connected into the hollow tubbiness of full circle, and through the inside and outside circle finish turning to given size, to guarantee gas length.
Five, launch in the sketch map to assembly structure profile and hollow p-m rotor stereochemical structure shown in Figure 4 at the generator shaft that the present invention relates to shown in Figure 2; The forward and backward runing rest 14,15 in two ends vertically adopts general steel plate or die casting aluminum component to process; Be used for installing and fixing hollow p-m rotor; And be connected with internal stator back shaft 1 through rolling bearing 18, guarantee that sleeve rotor can normally rotate, runing rest 14,15 inside and outside appropriate locations in front and back are provided with radial gusset; Preceding runing rest 14 is connected with gasoline engine power output shaft 20 and is equipped with radiator fan 13, to strengthen the radiating effect of internal stator and rotor.
The 3rd; In the embodiment that Fig. 1 and Fig. 4 showed; The pole shoe position is provided with two line embedding grooves behind each magnetic pole of hollow p-m rotor; Be provided with additive excitation winding 10 in the groove; The coiling of this excitation winding, rule, dipping lacquer and insulating treatment process and traditional motor windings manufacturing process are identical, and these additive excitation winding two ends should be connected in series diode 11 and constitute the halfwave rectifier loops after permanent magnet is installed, and the wiring direction in diode 11 halfwave rectifier loops is decided by motor-field N, S extreme direction and the sense of current.
The 4th; In two stator core three-dimensional structure diagrams shown in Figure 3, external stator core 5 becomes the oval shape of clipping edge by monophase machine magnetic circuit principle design, and core material adopts the thick silicon steel plate of 0.5mm to laminate and argon arc welding is connected into integral body; Consistent with conventional electric generators technology; Inner-stator iron core adopts the thick silicon steel plate of 0.5mm to laminate the back equally and is pressed into the axle tight fit, and interior external stator core length is equal fully, and core length depends on the output of a generator size; And technological requirements such as inside and outside stator built-in line, dipping lacquer, check also are equal to traditional generator windings manufacturing and electrical fitting technology fully; Inside and outside stator winding all is connected into 120.The single phase alternating current (A.C.) winding construction that facies tract distributes.
Above-described only is preferred implementation of the present invention; For a person skilled in the art; Under the prerequisite that does not break away from present technique invention structure; Can also make some distortion and improvement, these also should be regarded as protection scope of the present invention, and these can not influence effect and practicality that the present invention implements.
Claims (4)
1. one kind has high power density and the brushless single phase synchronous generator of the compound rectifier excitation compound excitation stabilized voltage characteristic, new structure; It is characterized in that: one, generator adopts " inside and outside pair of stator+hollow p-m rotor " structure; Setting-in separate single-phase winding (3), (4) are gone up in inside and outside stator core (2) and (5); Rotor is the magneto open circles barrel shaped structure of no yoke iron core; Be installed between inside and outside two stators, and air gap, generator magnetic circuit are all arranged between two stator is two heteropolarity faces directly two stators of series connection and the closed composite magnetic circuit structure that multi-disc is installed the same polarity permanent magnet 6 that constitutes a magnetic pole side by side; Two, generator adopts the compound rectifier excitation mode of " rare earth permanent magnet+induction brush-less electrically exciting ", and the required magnetic field of generating electricity is made up of two parts: the single-phase winding of external stator induced the unloaded air-gap field Φ of specified floating voltage in the same polarity rare-earth permanent magnet (6) that multi-disc is installed side by side provided and can guarantee under every magnetic pole
0, keep load terminal voltage and stablize required magnet excitation field Φ in certain limit
bNegative phase-sequence magnetic field when being arranged on after the hollow p-m rotor conrotatory veer near electric excitation winding (10) inductive load in the groove pole shoe also provides the DC excitation electric current and produces to electric excitation winding after diode (11) halfwave rectifier.
2. the brushless single phase synchronous generator of the compound rectifier excitation of new structure according to claim 1; Its rotor structure characteristic is: no rotor yoke iron core connects magnetic circuit between the hollow p-m rotor heteropolarity permanent magnet of drum shape; Permanent magnet (6) is dull and stereotyped rectangular configuration and is embedded in the rectangle square groove of the magnetic pole magnetic guiding loop of being processed by ferromagnetic material (9); The magnet arrangements mode is that multi-disc same polarity magnet is formed a magnetic pole; Magnetic circuit is the composite magnetic circuit structure of the parallel connection of same polarity magnet, the series connection of heteropolarity magnet, and same polarity magnet parallel connection number and the size of forming each magnetic pole is decided by motor pole number and pole embrace, generate electricity required magnetic flux and permanent magnet manufacture process requirement; Adopt non-magnetic stainless steel connecting ring (8) rivet welding to become whole drum shape between the different polarity poles, the hollow p-m rotor of drum shape before and after be equipped with at two ends vertically runing rests (14) also be connected with internal stator back shaft (1) with (15) through rolling bearing.
3. the brushless single phase synchronous generator of the compound rectifier excitation of new structure according to claim 1; Its architectural feature is that hollow p-m rotor magnetic pole magnetic guiding loop (9) is a unsymmetric structure; Near the back pole shoe of each magnetic pole magnetic guiding loop (9) of conrotatory veer, be provided with line embedding groove; Electric excitation winding (10) is installed in the groove, and this winding line end to end is connected to form half-wave rectifying circuit by the magnetic field and the sense of current by diode (11).
4. the brushless single phase synchronous generator of the compound rectifier excitation of new structure according to claim 1; Its internal stator winding (3) and external stator winding (4) are connected into the external resistive load power supply of single-phase alternating current line structure; Its external stator core (5) becomes the oval shape of clipping edge by single-phase magnetic circuit principle design, and the single-phase winding of interior external stator distributes all by 120 ° of facies tract design arrangement.
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| CN103956875A (en) * | 2014-05-22 | 2014-07-30 | 林绢华 | Three-path-parallel mixed excitation single-armature brushless single-phase synchronous generator |
| CN106452210A (en) * | 2015-08-07 | 2017-02-22 | 德昌电机(深圳)有限公司 | Magnetic sensor integrated circuit, motor assembly and application device |
| CN107959367A (en) * | 2016-10-18 | 2018-04-24 | 中国科学院宁波材料技术与工程研究所 | A kind of bimorph transducer composite excitation eddy current damping device |
| WO2021169520A1 (en) * | 2020-02-26 | 2021-09-02 | 安徽一天电气技术股份有限公司 | Single-phase synchronous generator, single-phase power supply, arc-extinguishing system and arc-extinguishing method |
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