CN103795209B - Increase the Fielding-winding doubly salient generator of the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting - Google Patents
Increase the Fielding-winding doubly salient generator of the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting Download PDFInfo
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- CN103795209B CN103795209B CN201210418044.7A CN201210418044A CN103795209B CN 103795209 B CN103795209 B CN 103795209B CN 201210418044 A CN201210418044 A CN 201210418044A CN 103795209 B CN103795209 B CN 103795209B
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Abstract
nullThe present invention relates to a kind of Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting，This Fielding-winding doubly salient generator three-phase windings A、B、C is terminal open circuit winding，Each phase winding，Connect diode and electric capacity the most respectively，The Same Name of Ends of every phase winding connects the anode of diode respectively，The negative electrode of diode connects the positive pole of electric capacity，The negative pole of another termination capacitor of every phase winding，Three independent rectifying and wave-filtering parts are according still further to the positive pole meeting B phase electric capacity Cb by the positive-negative relationship of electric capacity successively according to the negative pole of A phase electric capacity Ca，The negative pole of B phase electric capacity Cb connects the positive pole of C phase electric capacity Cc，It is characterized in that: the positive pole of a termination A phase electric capacity Ca of first set Exciting Windings for Transverse Differential Protection Lf1，The other end of first set Exciting Windings for Transverse Differential Protection Lf1 loads use as positive pole or negative the connecing of electromotor，The two ends of the second set Exciting Windings for Transverse Differential Protection Lf2 are connected with DC excitation voltage source Uf.
Description
Technical field
The invention belongs to technical field of generators, particularly relate to a kind of Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting.
Background technology
Stator and the rotor of electric excitation biconvex electrode electric machine are salient-pole structure, belong to variable reluctance class motor, it is not necessary to rotor-position sensor and power inverter, and system reliability is high.Electric excitation biconvex electrode electric machine replaces permanent magnet with Exciting Windings for Transverse Differential Protection so that the excitation field of motor can regulate.Without winding and permanent magnet on rotor, structure is the simplest, reliable and low cost；During generator loading change, can be easy to control by the exciting current size in regulation Exciting Windings for Transverse Differential Protection to maintain constant voltage to export, in airplane power source and field of wind power generation, there is important using value.The Exciting Windings for Transverse Differential Protection of electric excitation biconvex electrode brushless generator must be provided excitation source by single DC source, its exciting power is provided by external power supply completely, therefore, apply and highlight the occasion of change in sudden turn of events speed and the low speed uniform velocity that combines, required field power supply power is big, and the excitation controller capacity needed for controlling exciting current is greatly, its power device design requires to be greatly improved, and the excitation controller cost made is high and reliability reduces.Fielding-winding doubly salient generator, uses the star-like connection of phase winding, exports unidirectional current by full wave rectifier.Affected by factors such as phase winding inductance and full wave rectifier diode commutations, the output voltage using the double-salient-pole generator of full wave rectifier increases with load and declines, common electrical equipment always wishes that supply voltage keeps constant, generator excitation regulation system keeps terminal voltage constant by increasing exciting current, thus adds the excitation loss of excitation system；Meanwhile, for electric excitation biconvex electrode electric machine, due to the impact of salient pole slot effect, during as motor running, torque pulsation is bigger；During as generator operation, there is also the defect that output DC voltage ripple is big, this strongly limits double salient-pole electric machine in wide rotating speed running status especially low cruise, the application of large-power occasions；Additionally, Fielding-winding doubly salient generator is used in wide rotating speed running status, particularly relatively greatly and changes violent occasion, when successive load is power-converting device in rotating speed no-load voltage ratio, on the winding construction of tradition star-delta connection, transient peak voltage is higher, is easily destroyed insulation.Therefore, from the basic electromagnetic characteristic of electric excitation biconvex electrode electric machine, propose to have the electric excitation biconvex electrode electric machine electromotor increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting that low-voltage regulation, low excitation loss, harmonic pulsation Exciting Windings for Transverse Differential Protection compound excitation little, double, winding insulation are simple and reliable, as the original intention of the present invention.
Summary of the invention
It is an object of the invention to: overcome the deficiencies in the prior art, it is proposed that one has low-voltage regulation and low excitation loss, there is boosting, interior filter effect, double Exciting Windings for Transverse Differential Protection compound excitation, insulate reliable Fielding-winding doubly salient generator simultaneously.The present invention is by Exciting Windings for Transverse Differential Protection, stator core, phase winding, rotor core, rotor connecting shaft, diode and electric capacity, wherein the basic structure of Fielding-winding doubly salient generator is: stator and rotor are salient pole tooth slot structure, stator and rotor core are formed by silicon steel plate stacking
On stator in addition to equipped with concentrating armature winding, also Exciting Windings for Transverse Differential Protection, the windings in series on stator tooth that space is relative constitutes a phase, without winding on rotor.nullFielding-winding doubly salient generator three-phase windings A、B、C is terminal open circuit winding，The positive direction of phase winding electromotive force and magnetic flux positive direction meet positive right-handed helix relation，The positive direction of phase winding electromotive force points to the anode of winding，Each phase winding，Connect diode and electric capacity the most respectively，Draw through wire，The Same Name of Ends of every phase winding connects the anode of diode respectively，The negative electrode of diode connects the positive pole of electric capacity，The negative pole of another termination capacitor of every phase winding，Three independent rectifying and wave-filtering parts are according still further to the positive pole meeting B phase electric capacity Cb by the positive-negative relationship of electric capacity successively according to the negative pole of A phase electric capacity Ca，The negative pole of B phase electric capacity Cb connects the positive pole of C phase electric capacity Cc，It is characterized in that: the positive pole of a termination A phase electric capacity Ca of first set Exciting Windings for Transverse Differential Protection Lf1，The other end of first set Exciting Windings for Transverse Differential Protection Lf1 loads use as positive pole or negative the connecing of electromotor，The two ends of the second set Exciting Windings for Transverse Differential Protection Lf2 are connected with DC excitation voltage source Uf.
The electromotor of the present invention, its principle realized is: the phase winding magnetic linkage of Fielding-winding doubly salient generator is relevant with rotor-position, when rotor pole slips into stator poles, unloaded magnetic linkage increases, and winding induces negative electromotive force, if this stage electromotor powers to the load, from Lenz's law, the magnetic linkage that load current produces stops unloaded magnetic linkage to increase, and for degaussing armature-reaction, causes electromotive force to reduce；When rotor pole skids off stator poles, unloaded magnetic linkage reduces, and winding induces positive electromotive force.If this stage electromotor powers to the load, from Lenz's law, the magnetic linkage that load current produces stops the reduction of unloaded magnetic linkage, for increasing magnetic armature reaction, causes electromotive force to raise.The stage of stator poles is skidded off to load supplying at rotor pole, increasing magnetic armature reaction is utilized to offset or weaken the loss of voltage that the factor such as phase winding inductance and full-bridge rectifier diode commutation causes, the exciting current of first set Exciting Windings for Transverse Differential Protection depends on load current size, play self-excitation effect, can significantly reduce the voltage regulation factor of electromotor, promote the output of electromotor.The magnetic potential effect that in first set Exciting Windings for Transverse Differential Protection, exciting current produces so that exciting power additional needed for the second set Exciting Windings for Transverse Differential Protection is little, excitation loss reduces, and reduces excitation controller capacity, and design is easy, reliability is high.Thus significantly reduce voltage regulation factor and the excitation loss of electromotor.
Common generator output voltage, can be according to the all-wave of star delta connection or halfwave rectifier relation, its DC output end voltage U0 can be reduced to every phase winding voltage and the product of a certain coefficient, the direct current output of the electromotor of the present invention is that three independent windings are carried out rectification superposition, thus output DC voltage is that the 3 of every commutating phase voltage is accompanied, for independent phase voltage, form obvious pressurized effect.Simultaneously during voltage superposition, owing to electromotor three-phase windings is at space mutual deviation 120 degree distribution, commutation rectification superposition, the filter effect formed in restriction relation in using winding, reduces current harmonics, reduce mains ripple.
The electromotor of the present invention, when little exciting current works, motor magnetic circuit is unsaturated, and the electromotive force elevation amplitude increasing magnetic armature reaction generation increases with the increase of load；When big exciting current works, motor magnetic circuit is saturated, increase with load, increase the electromotive force elevation amplitude reduction that magnetic armature reaction produces, but simultaneously because magnetic circuit is saturated, the loss of voltage caused in phase winding inductance and diode commutation process reduces the most accordingly, so under different exciting electric current, system has low voltage regulation factor and excitation loss, has widened the occasion used.
The electromotor of the present invention; particularly in coupling power converter type load; owing to phase winding every under identical VD has the lowest voltage; thus when solving power electronic devices and returning the higher hamonic wave peak voltage being emitted back towards winding; owing to fundamental voltage substantially reduces; make the peak voltage produced because of winding inductance be substantially reduced, protect the insulation of electromotor.
The electromotor of the present invention, it is adaptable to all version of electric excitation biconvex electrode electric machine of the different numbers of phases.
The electromotor of the present invention is compared with prior art, it is the basic electromagnetic characteristic from electric excitation biconvex electrode electric machine and rectification characteristic combine, the increasing magnetic armature reaction utilizing load reduces voltage regulation factor and the excitation loss of motor, the electric current increasing magnetic armature reaction is load current, does not increase excess loss；When electromotor be external electrical load power time, the exciting current of first set Exciting Windings for Transverse Differential Protection depends on the size of load current, plays self-excitation effect, can significantly reduce the voltage regulation factor of electromotor, promotes the output of electromotor.The excitation magnetic potential and second that first set Exciting Windings for Transverse Differential Protection exciting current produces overlaps the excitation magnetic potential that in Exciting Windings for Transverse Differential Protection, exciting current produces and jointly acts on, operating fields is provided for electromotor, first set Exciting Windings for Transverse Differential Protection has output filter action, be conducive to improving the output voltage of brushless generator or output electric current quality, the commutation rectification superposition utilizing the spatial relationship of winding eliminates current harmonics, reduce VD ripple and pulsation, thus improve performance and the efficiency of electromotor；Use winding open-circuit structure to connect, realize high output voltage with relatively low input phase voltage, expanded range.
Accompanying drawing explanation
Fig. 1 is the generator windings connection figure of three-phase wye connection all wave rectification.
Fig. 2 is three-phase structure Fielding-winding doubly salient generator sectional view
Fig. 3 is the generator windings connection figure of the double Exciting Windings for Transverse Differential Protection compound excitation electric excitation biconvex electrode of this increasing magnetic boosting
nullLabel title in above-mentioned figure: 1、Exciting Windings for Transverse Differential Protection，2、Stator core，3、Phase winding，4、Rotor core，5、Rotor connecting shaft，If1+ represents the anode of first set Exciting Windings for Transverse Differential Protection，If1-represents the negative terminal of first set Exciting Windings for Transverse Differential Protection，If2+ represents the anode of the second set Exciting Windings for Transverse Differential Protection，If2-represents the negative terminal of the second set Exciting Windings for Transverse Differential Protection，A+ represents the anode of A phase winding，A-represents the negative terminal of A phase winding，B+ represents the anode of B phase winding，B-represents the negative terminal of B phase winding，C+ represents the anode of C phase winding，C-represents the negative terminal of C phase winding，D1～D6 is all wave rectification diode，Da、Db、Dc is the diode increasing the magnetic boosting double Exciting Windings for Transverse Differential Protection compound excitation Fielding-winding doubly salient generator of interior filtering，Ca、Cb、Cc is respectively the commutation capacitor of ABC three-phase，※ represents the Same Name of Ends of three-phase windings，● represent the Same Name of Ends of double Exciting Windings for Transverse Differential Protection，Z is load，Lf1 is first set Exciting Windings for Transverse Differential Protection，Lf2 is the second set Exciting Windings for Transverse Differential Protection，Uo is VD.
Detailed description of the invention
Owing to the Fielding-winding doubly salient generator structure of the different number of phases different structure forms increasing double Exciting Windings for Transverse Differential Protection compound excitations of magnetic boosting is similar to 3 phase 6/4 structure electric excitation biconvex electrode electric machines, with 3 phase 6/4 structure electric excitation biconvex electrode electric machines, specific embodiment is described below.The double Exciting Windings for Transverse Differential Protection compound excitation of this increasing magnetic boosting
nullFielding-winding doubly salient generator includes Exciting Windings for Transverse Differential Protection 1、Stator core 2、Phase winding 3、Rotor core 4、Rotor connecting shaft 5、Diode and electric capacity，Fielding-winding doubly salient generator three-phase windings A、B、C is terminal open circuit winding，The positive direction of phase winding electromotive force and magnetic flux positive direction meet positive right-handed helix relation，The positive direction of phase winding electromotive force points to the anode of winding，Each phase winding，Connect diode and electric capacity the most respectively，The Same Name of Ends of every phase winding connects the anode of diode respectively，The negative electrode of diode connects the positive pole of electric capacity，The negative pole of another termination capacitor of every phase winding，Three independent rectifying and wave-filtering parts are according still further to the positive pole meeting B phase electric capacity Cb by the positive-negative relationship of electric capacity successively according to the negative pole of A phase electric capacity Ca，The negative pole of B phase electric capacity Cb connects the positive pole of C phase electric capacity Cc，It is characterized in that: the positive pole of a termination A phase electric capacity Ca of first set Exciting Windings for Transverse Differential Protection Lf1，The other end of first set Exciting Windings for Transverse Differential Protection Lf1 loads use as positive pole or negative the connecing of electromotor，The two ends of the second set Exciting Windings for Transverse Differential Protection Lf2 are connected with DC excitation voltage source Uf.
The electromotor of the present invention, the 3 phase 6/4 structure electric excitation biconvex electrode electric machines related to are as shown in Figure 2.Exciting current if2+ flows into, and flows out from the negative terminal if2-of Exciting Windings for Transverse Differential Protection, produces magnetic flux from left to right inside the second set Exciting Windings for Transverse Differential Protection.If electric current flows out from the anode of A, B, C three-phase windings, negative terminal flows into, and produces load magnetic flux from left to right inside winding, consistent with magnetic flux.Negative terminal A-, B-, C-of A, B, C three-phase windings is each independent, and the negative terminal of electric capacity Ca, Cb, Cc is connect respectively through wire extraction, anode A+, B+, C+ of A, B, C three-phase windings connect the anode of diode Da, Db, Dc respectively, the negative electrode of Da, Db, Dc is connected respectively to the anode of Ca, Cb, Cc, the negative terminal of Ca and the anode of Cb are connected, again the negative terminal of Cb and the anode of Cc are connected, connect wire respectively from the anode of Ca and the negative terminal of Cc and draw, do the positive pole of electromotor, negative pole use.The positive pole of electromotor and negative pole connect positive pole and the negative pole of load Z respectively, to load supplying.As shown in Figure 3.Time unloaded, the size of regulation exciting current if2, i.e. the output voltage U0 of adjustable electrical generator, thus keep output voltage U0 constant.
The Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting of the present invention, the phase winding magnetic linkage of the 3 phase 6/4 structure electric excitation biconvex electrodes related to is relevant with rotor-position, and definition rotor pole is 0 degree of electrical angle, i.e. position shown in Fig. 2 when aliging with A phase stator poles.Electrical angle is spent interval 0 degree of electrical angle-120, when rotor pole skids off A phase stator poles, the unloaded magnetic linkage of A phase reduces, and winding induces positive electromotive force, and the voltage between anode and the negative electrode of A diode phase Da is just, Da turns on, A phase winding electric current flows out from A+ end, flows into from A-end, and the armature field of generation is consistent with excitation field direction, increase the magnetic linkage of A phase winding linkage, thus improve A phase winding electromotive force.The increments of winding electromotive force can approximate the loss of voltage that the factor such as phase winding inductance and full-bridge rectifier diode steering of counteracting causes, output voltage Uo declines few, reasonable in design output voltage Uo is made to be held essentially constant, spending electrical angle 120 degree of electrical angles-240 interval, be rotor slot under A phase stator poles, the unloaded magnetic linkage of A phase is basically unchanged, winding induced potential is close to 0, voltage between anode and the negative electrode of A diode phase Da is negative, and Da ends, and A phase winding does not has electric current；Spending electrical angle 240 degree of electrical angles-360 interval, when rotor pole slips into A phase stator poles, the unloaded magnetic linkage of A phase increases, and winding induces negative electromotive force, and the voltage between anode and the negative electrode of A diode phase Da is negative, and Da ends, and A phase winding does not has electric current.When rotor forwards 360 degree of electrical angles to, next cycle starts.B phase, C phase operation principle identical with A phase, time respectively delayed 120 degree of electrical angles and 240 degree of electrical angles, as shown in Figure 2.
The Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting of the present invention, three-phase windings A, B, the C related to, when output, it is firstly connected to respective commutation diode Da, Db, Dc and electric capacity Ca, Cb, Cc, each phase constitutes an independent rectification unit, by the DC series superposition of three unit, form the output voltage of boosting, as shown in Figure 3.
The Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting of the present invention, the connection of the double Exciting Windings for Transverse Differential Protection related to is, one end of first set Exciting Windings for Transverse Differential Protection Lf1 is connected with the negative electrode of diode Da, the other end of first set Exciting Windings for Transverse Differential Protection Lf1 is connected with the positive pole of output, the two ends of the second set Exciting Windings for Transverse Differential Protection Lf2 are connected, as shown in Figure 3 with DC excitation voltage source Uf.Time unloaded, directly the size of current of regulation the second set Exciting Windings for Transverse Differential Protection Lf2 maintains stablizing of output voltage, during load, first set Exciting Windings for Transverse Differential Protection Lf1 flows through electric current, form self-excitation magnetic potential, jointly complete excitation effect with the magnetic potential of the second set Exciting Windings for Transverse Differential Protection, and make the magnetic potential assignments needing controller to complete reduce.
The Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting of the present invention, the every phase output voltage related to, after every mutually independent rectification unit, various higher hamonic wave compositions obtain bigger decay, simultaneously because three-phase windings A, B, C are 120 degree of electrical angle distributions in space, as shown in Figure 2, so, DC voltage removes certain phase angle successively, is then overlapped, and reaches to adjust power factor and the purpose of harmonic carcellation.First set Exciting Windings for Transverse Differential Protection has output filter action, is conducive to reducing the pulsation of electric current.
Claims (1)
- null1. the Fielding-winding doubly salient generator increasing the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting，Include Exciting Windings for Transverse Differential Protection 1、Stator core 2、Phase winding 3、Rotor core 4、Rotor connecting shaft 5、Diode and electric capacity，Fielding-winding doubly salient generator three-phase windings A、B、C is terminal open circuit winding，The positive direction of phase winding electromotive force and magnetic flux positive direction meet positive right-handed helix relation，The positive direction of phase winding electromotive force points to the anode of winding，Each phase winding，Connect diode and electric capacity the most respectively，Three independent rectifying and wave-filtering parts are according still further to the positive pole meeting B phase electric capacity Cb by the positive-negative relationship of electric capacity successively according to the negative pole of A phase electric capacity Ca，The negative pole of B phase electric capacity Cb connects the positive pole of C phase electric capacity Cc，It is characterized in that: the Same Name of Ends of every phase winding connects the anode of diode respectively，The negative electrode of diode connects the positive pole of electric capacity，The negative pole of another termination capacitor of every phase winding，The positive pole of one termination A phase electric capacity Ca of first set Exciting Windings for Transverse Differential Protection Lf1，The other end of first set Exciting Windings for Transverse Differential Protection Lf1 loads use as positive pole or negative the connecing of electromotor，The two ends of the second set Exciting Windings for Transverse Differential Protection Lf2 are connected with DC excitation voltage source Uf.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418044.7A CN103795209B (en) | 2012-10-29 | 2012-10-29 | Increase the Fielding-winding doubly salient generator of the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting |
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| CN201210418044.7A CN103795209B (en) | 2012-10-29 | 2012-10-29 | Increase the Fielding-winding doubly salient generator of the double Exciting Windings for Transverse Differential Protection compound excitation of magnetic boosting |
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| CN103795209A CN103795209A (en) | 2014-05-14 |
| CN103795209B true CN103795209B (en) | 2016-09-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492005Y (en) * | 2001-04-27 | 2002-05-15 | 尤大千 | Three-phase series boosting power rectifier |
| CN101127461A (en) * | 2007-07-13 | 2008-02-20 | 南京航空航天大学 | Hybrid Excitation Doubly Salient Brushless DC Generator |
| CN101192785A (en) * | 2007-12-03 | 2008-06-04 | 南京航空航天大学 | Magnetizing generator electrically excited doubly salient pole motor |
| CN102522868A (en) * | 2011-12-12 | 2012-06-27 | 南京航空航天大学 | Double excitation-winding compound-excitation double-salient brushless direct-current generator |
| CN202395542U (en) * | 2011-11-28 | 2012-08-22 | 中国人民解放军徐州空军学院 | Multi-winding doubly salient generator and output conversion and control device |
-
2012
- 2012-10-29 CN CN201210418044.7A patent/CN103795209B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492005Y (en) * | 2001-04-27 | 2002-05-15 | 尤大千 | Three-phase series boosting power rectifier |
| CN101127461A (en) * | 2007-07-13 | 2008-02-20 | 南京航空航天大学 | Hybrid Excitation Doubly Salient Brushless DC Generator |
| CN101192785A (en) * | 2007-12-03 | 2008-06-04 | 南京航空航天大学 | Magnetizing generator electrically excited doubly salient pole motor |
| CN202395542U (en) * | 2011-11-28 | 2012-08-22 | 中国人民解放军徐州空军学院 | Multi-winding doubly salient generator and output conversion and control device |
| CN102522868A (en) * | 2011-12-12 | 2012-06-27 | 南京航空航天大学 | Double excitation-winding compound-excitation double-salient brushless direct-current generator |
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