CN203039541U - Compound excitation double-excitation winding segmented-rotor magnetic flux switching doubly salient brushless dc generator - Google Patents
Compound excitation double-excitation winding segmented-rotor magnetic flux switching doubly salient brushless dc generator Download PDFInfo
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- CN203039541U CN203039541U CN 201320013231 CN201320013231U CN203039541U CN 203039541 U CN203039541 U CN 203039541U CN 201320013231 CN201320013231 CN 201320013231 CN 201320013231 U CN201320013231 U CN 201320013231U CN 203039541 U CN203039541 U CN 203039541U
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Abstract
The utility model discloses a doubly salient brushless dc generator, and the dc generator is characterized in that a bridge type rectification circuit comprises a diode D4 and a diode D1 connected in series, a diode D5 and a diode D2 connected in series, a diode D6 and a diode D3 connected in series, and an anode of the diode D4 is connected with an anode of the diode D5 and an anode of the diode D6, and a cathode of the diode D1 is connected with a cathode of the diode D2 and an cathode of the diode D3; an output terminal of a LA, LB and LC three-phase winding is respectively connected with an anode of the diode D1, an anode of the diode D2 and an anode of the diode D3, one end of a first set excitation winding Lf1 is connected with the cathode of the diode D3, the other end of the first set excitation winding Lf1 is connected with one pole of an output filtering capacitor C, the other pole of the output filtering capacitor C is connected with the anode of the diode D6, and two ends of a second set excitation winding Lf2 are connected with a dc excitation voltage source Uf; and voltage on two ends of the output filtering capacitor C is output dc voltage Udc. The compound excitation double-excitation winding segmented-rotor magnetic flux switching doubly salient brushless dc generator can substantially reduce voltage adjusting rate of the generator, and improve output power of the generator.
Description
Technical field
The present invention relates to the two excitation winding segmented-rotor magnetic fluxs of compound excitation and switch brushless DC electric generator with dual salient poles, belong to the brshless DC motor field.
Background technology
Segmented-rotor magnetic flux switch dual salient pole machine is the novel bilateral salient pole variable reluctance motor that grows up on the basis of switched reluctance machines.Its stator of permanent magnetism segmented-rotor magnetic flux switch dual salient pole machine, rotor is salient-pole structure, formed by silicon steel plate packing, simple in structure, there is not winding on the rotor, the reliability height, be embedded with permanent magnetic material on the stator, have power density height, advantage that efficient is high, but air-gap field is difficult to regulate, thereby voltage-regulation or the weak magnetic control difficulty processed of permanent power.Electricity excitation segmented-rotor magnetic flux switch dual salient pole machine replaces permanent magnet with excitation winding, makes the excitation field of motor to regulate.No winding and permanent magnet on the rotor, structure is very simple, reliable and cost is low; During the generating state load variations, can export to keep constant voltage by the exciting current size of regulating in the excitation winding, control is convenient, has important use in fields such as variable speed constant frequency generators and is worth.The excitation winding that electricity excitation segmented-rotor magnetic flux switches brushless DC electric generator with dual salient poles must provide excitation source by independent DC power supply, its exciting power is provided by external power supply fully, therefore, in middle high-power applications occasion, required field power supply power is big, and it is big to control the required excitation controller capacity of exciting current, and its power device designing requirement improves greatly, makes excitation controller cost height and reliability reduce.
Summary of the invention
Technical problem to be solved by this invention is the deficiency at the above-mentioned background technology, provides the two excitation winding segmented-rotor magnetic fluxs of a kind of compound excitation to switch brushless DC electric generator with dual salient poles.The present invention adopts following technical scheme for achieving the above object: the two excitation winding segmented-rotor magnetic fluxs of a kind of compound excitation switch brushless DC electric generator with dual salient poles, include the two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation, bridge rectifier and filter capacitor; The two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation comprise stator and rotor, stator, rotor are salient-pole structure, wherein said stator is made up of stator core, the first cover excitation winding and the second cover excitation, described rotor is equipped with rotating shaft and forms by rotor core with every the magnetic lining, and embedding is crisscross arranged in stator core around the excitation tooth of the first cover excitation winding and the second cover excitation around armature tooth and the embedding of armature winding; 6 armature tooths and 6 excitation teeth are crisscross arranged on the stator iron 1, armature tooth is oppositely arranged in twos, circle is around armature winding on the armature tooth, circle links to each other with motor shaft every the magnetic lining around the first cover excitation winding and the second cover excitation winding on the excitation tooth, and the rotor core of fan type is stuck in the magnetic lining by dovetail groove, excitation winding and armature winding are centralized winding on stator tooth, 6 excitation winding of the first cover excitation winding Lf1 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; 6 excitation winding of the second cover excitation winding Lf2 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; The first cover excitation winding Lf1 excitation magnetic linkage direction is identical or opposite with the second corresponding cover excitation winding Lf2 excitation magnetic linkage direction: when direction was identical, machine operation was increasing magnetic state; When direction was opposite, machine operation was in weak magnetic state, and the threephase armature winding is respectively, A, X, B, Y, C, Z.Wherein, A, B, C are end of the same name, and two armature winding series connection that differ 180 ° of mechanical angles are a phase armature winding; It is characterized in that: described bridge rectifier is the 4th rectifier diode D4 and first rectifier diode D1 series connection, the 5th rectifier diode D5 and second rectifier diode D2 series connection, the 6th rectifier diode D6 and the 3rd rectifier diode D3 series connection, the anode of the anode of the 4th rectifier diode D4 and the 5th rectifier diode D5, the anode of the 6th rectifier diode D6 are connected, and the negative electrode of the negative electrode of the first rectifier diode D1 and the second rectifier diode D2, the negative electrode of the 3rd rectifier diode D3 are connected; LA, LB, the input of LC threephase armature winding links together, LA, LB, the output of LC three phase windings respectively with the anode of the first rectifier diode D1, the anode of the second rectifier diode D2, the anode of the 3rd rectifier diode D3 connects, the end of the first cover excitation winding Lf1 is connected with the negative electrode of the 3rd rectifier diode D3, the other end of the first cover excitation winding Lf1 is connected with the utmost point of output filter capacitor C, another utmost point of output filter capacitor C is connected with the anode of the 6th rectifier diode D6, and the two ends of the second cover excitation winding Lf2 are connected with DC excitation voltage source Uf; The voltage at output filter capacitor C two ends is output dc voltage Udc.The two excitation winding segmented-rotor magnetic fluxs of described compound excitation switch in the brushless DC electric generator with dual salient poles, and bridge rectifier is uncontrollable rectification circuit or controlled rectification circuit.
The present invention has following beneficial effect:
A. the exciting current of the first cover excitation winding depends on the load current size, plays the self-excitation effect, can significantly reduce the voltage regulation of generator, promotes output of a generator.
B. because the magnetic potential effect that exciting current produces in the first cover excitation winding makes that the required exciting power that adds of the second cover excitation winding is little, excitation loss is low, has reduced the excitation controller capacity, design easy, reliability is high.
C. the first cover excitation winding has the output filter action, and the output electric energy that is conducive to improve brushless DC generator is the output current quality particularly.
Description of drawings
Fig. 1 is the structural representation of the two excitation winding segmented-rotor magnetic flux switch dual salient pole machine motors of compound excitation among the present invention;
Fig. 2 is armature winding among the present invention and excitation winding layout schematic diagram;
Fig. 3 adopts the schematic diagram for the moment of full bridge rectifier for the present invention;
Fig. 4 adopts 2 o'clock schematic diagram of full bridge rectifier for the present invention;
Among the figure, 1, stator core, 2, the first cover excitation winding, 3, the second cover excitation winding, 4, armature winding, 5, the rotor core of fan type, 6, every the magnetic lining, 7, rotating shaft, 8, armature tooth, 9, the excitation tooth, LA, LB, LC are the threephase armature winding, A, X, B, Y, C, Z are respectively the threephase armature winding; Wherein, A, B, C are end of the same name, and Lf1 is the first cover excitation winding, and Lf2 is the second cover excitation winding, D1, and D2, D3, D4, D5, D6 are first to the 6th rectifier diode, and C is output filter capacitor, and Uf is dc excitation power, and Udc is output dc voltage.
Embodiment
The two excitation winding segmented-rotor magnetic fluxs of this compound excitation switch brushless DC electric generator with dual salient poles and include the two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation, bridge rectifier and filter capacitor.The present invention has adopted the two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of 12/8 utmost point compound excitation as shown in Figure 1: the two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation comprise stator and rotor, stator, rotor are salient-pole structure, wherein said stator is made up of stator core 1, the first cover excitation winding 2 and the second cover excitation 3, described rotor is equipped with rotating shaft 7 and forms by rotor core 5 with every magnetic lining 6, and embedding is crisscross arranged in stator core 1 around the excitation tooth 9 of the first cover excitation winding 2 and the second cover excitation 3 around armature tooth 8 and the embedding of armature winding 4; 6 armature tooths 8 and 6 excitation teeth 9 are crisscross arranged in the stator core 1, armature tooth 8 is oppositely arranged in twos, circle is around armature winding 4 on the armature tooth, circle is around the first cover excitation winding 2 and the second cover excitation winding 3 on the excitation tooth, link to each other with motor shaft 7 every magnetic lining 6, the rotor core 5 of fan type is stuck in magnetic lining 6 by dovetail groove.Excitation winding and armature winding are centralized winding on stator tooth, according to arrangement shown in Figure 2.6 excitation winding of the first cover excitation winding Lf1 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; 6 excitation winding of the second cover excitation winding Lf2 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; The first cover excitation winding Lf1 excitation magnetic linkage direction is identical or opposite with the second corresponding cover excitation winding Lf2 excitation magnetic linkage direction: when direction was identical, machine operation was increasing magnetic state; When direction was opposite, machine operation was in weak magnetic state.The threephase armature winding is respectively, A, X, B, Y, C, Z.Wherein, A, B, C are end of the same name.Two armature winding series connection that differ 180 ° of mechanical angles are a phase armature winding.It is characterized in that: described bridge rectifier is the 4th rectifier diode D4 and first rectifier diode D1 series connection, the 5th rectifier diode D5 and second rectifier diode D2 series connection, the 6th rectifier diode D6 and the 3rd rectifier diode D3 series connection, the anode of the anode of the 4th rectifier diode D4 and the 5th rectifier diode D5, the anode of the 6th rectifier diode D6 are connected, and the negative electrode of the negative electrode of the first rectifier diode D1 and the second rectifier diode D2, the negative electrode of the 3rd rectifier diode D3 are connected; LA, LB, the input of LC threephase armature winding links together, LA, LB, the output of LC three phase windings respectively with the anode of the first rectifier diode D1, the anode of the second rectifier diode D2, the anode of the 3rd rectifier diode D3 connects, the end of the first cover excitation winding Lf1 is connected with the negative electrode of the 3rd rectifier diode D3, the other end of the first cover excitation winding Lf1 is connected with the utmost point of output filter capacitor C, another utmost point of output filter capacitor C is connected with the anode of the 6th rectifier diode D6, and the two ends of the second cover excitation winding Lf2 are connected with DC excitation voltage source Uf; The voltage at output filter capacitor C two ends is output dc voltage Udc.The position of the C of the first cover excitation winding Lf1, output filter capacitor can exchange.The output line of bridge rectifier connects situation that the first cover excitation winding Lf1 connects output filter capacitor C again as shown in Figure 3, and the position of the C of the first cover excitation winding Lf1, output filter capacitor can exchange; Be the two ends that two outputs of bridge rectifier connect output filter capacitor C respectively, output filter capacitor C an end connect the end of the first cover excitation winding Lf1 again; The other end of the other end of Lf1 and output filter capacitor C is output dc voltage Udc; With reference to shown in Figure 4;Rectification circuit can be control rectifying circuit not, also can be controlled rectification circuit.When generator was the power supply of external electrical load, the exciting current of the first cover excitation winding depended on and the size of load current plays the self-excitation effect, can significantly reduce the voltage regulation of generator, promotes output of a generator.The excitation magnetic potential acting in conjunction that exciting current produces in the excitation magnetic potential that the first cover excitation winding exciting current produces and the second cover excitation winding is for generator provides work magnetic field.The first cover excitation winding has the output filter action, is conducive to improve output voltage or the output current quality of brushless DC generator.Adjusting air-gap field power, only need to regulate the exciting current size in the second cover excitation winding, and because the magnetic potential effect that exciting current produces in the first cover excitation winding makes that the required exciting power that adds of the second cover excitation winding is little, excitation loss is low, has reduced the excitation controller capacity.As seen, the two excitation winding segmented-rotor magnetic fluxs of compound excitation involved in the present invention switch brushless DC electric generator with dual salient poles reliability height, are easy to control.
The present invention can be applied to the two excitation winding segmented-rotor magnetic fluxs of other compound excitation and switch brushless DC electric generator with dual salient poles, as:
A. the stator number of teeth is 12 (6 armature tooths, 6 excitation teeth), and rotor number of poles (distinguish magnetic inductive block number) is 5;
B. the stator number of teeth is 12 (6 armature tooths, 6 excitation teeth), and the rotor number of poles is 7;
C. the stator number of teeth is 12 (6 armature tooths, 6 excitation teeth), and the rotor number of poles is 8;
D. the stator number of teeth is 12 (6 armature tooths, 6 excitation teeth), and the rotor number of poles is 10;
E. the stator number of teeth is 12 (6 armature tooths, 6 excitation teeth), and the rotor number of poles is 11;
F. the stator number of teeth is 24 (12 armature tooths, 12 excitation teeth), and the rotor number of poles is 10;
G. the stator number of teeth is 24 (12 armature tooths, 12 excitation teeth), and the rotor number of poles is 14;
H. the stator number of teeth is 24 (12 armature tooths, 12 excitation teeth), and the rotor number of poles is 16;
I. the stator number of teeth is 24 (12 armature tooths, 12 excitation teeth), and the rotor number of poles is 20;
J. the stator number of teeth is 24 (12 armature tooths, 12 excitation teeth), and the rotor number of poles is 22.
In the above topology, a, b, e can make the empty load of motor back-emf have higher sinusoidal degree, but because the rotor number of poles is odd number, motor has asymmetric magnetic pull; There are not the asymmetric magnetic pull of rotor in c, d structure, but the back-emf sine is to being not so good as structure a, b, e.F one j then can make motor in the back-emf sine, does not have asymmetric magnetic pull.
Claims (4)
1. the two excitation winding segmented-rotor magnetic fluxs of compound excitation switch brushless DC electric generator with dual salient poles, include the two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation, bridge rectifier and filter capacitor; The two excitation winding segmented-rotor magnetic flux switch dual salient pole machines of compound excitation comprise stator and rotor, stator, rotor are salient-pole structure, wherein said stator is made up of stator core 1, the first cover excitation winding 2 and the second cover excitation 3, described rotor is equipped with rotating shaft 7 and forms by rotor core 5 with every magnetic lining 6, and embedding is crisscross arranged in stator core 1 around the excitation tooth 9 of the first cover excitation winding 2 and the second cover excitation 3 around armature tooth 8 and the embedding of armature winding 4; 6 armature tooths 8 and 6 excitation teeth 9 are crisscross arranged in the stator core 1, armature tooth 8 is oppositely arranged in twos, circle is around armature winding 4 on the armature tooth, circle is around the first cover excitation winding 2 and the second cover excitation winding 3 on the excitation tooth, link to each other with motor shaft 7 every magnetic lining 6, the rotor core 5 of fan type is stuck in magnetic lining 6 by dovetail groove, excitation winding and armature winding are centralized winding on stator tooth, according to arrangement shown in Figure 2,6 excitation winding of the first cover excitation winding Lf1 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; 6 excitation winding of the second cover excitation winding Lf2 are connected through certain way, when guaranteeing to lead to direct current, follow the right-hand rule; The first cover excitation winding Lf1 excitation magnetic linkage direction is identical or opposite with the second corresponding cover excitation winding Lf2 excitation magnetic linkage direction: when direction was identical, machine operation was increasing magnetic state; When direction was opposite, machine operation was in weak magnetic state, and the threephase armature winding is respectively, A, X, B, Y, C, Z; Wherein, A, B, C are end of the same name, and two armature winding series connection that differ 180 ° of mechanical angles are a phase armature winding; It is characterized in that: described bridge rectifier is the 4th rectifier diode D4 and first rectifier diode D1 series connection, the 5th rectifier diode D5 and second rectifier diode D2 series connection, the 6th rectifier diode D6 and the 3rd rectifier diode D3 series connection, the anode of the anode of the 4th rectifier diode D4 and the 5th rectifier diode D5, the anode of the 6th rectifier diode D6 are connected, and the negative electrode of the negative electrode of the first rectifier diode D1 and the second rectifier diode D2, the negative electrode of the 3rd rectifier diode D3 are connected; LA, LB, the input of LC threephase armature winding links together, LA, LB, the output of LC three phase windings respectively with the anode of the first rectifier diode D1, the anode of the second rectifier diode D2, the anode of the 3rd rectifier diode D3 connects, the end of the first cover excitation winding Lf1 is connected with the negative electrode of the 3rd rectifier diode D3, the other end of the first cover excitation winding Lf1 is connected with the utmost point of output filter capacitor C, another utmost point of output filter capacitor C is connected with the anode of the 6th rectifier diode D6, and the two ends of the second cover excitation winding Lf2 are connected with DC excitation voltage source Uf; The voltage at output filter capacitor C two ends is output dc voltage Udc.
2. switch brushless DC electric generator with dual salient poles according to the two excitation winding segmented-rotor magnetic fluxs of the described compound excitation of claim 1, it is characterized in that: the position of the C of the first cover excitation winding Lf1, output filter capacitor can exchange; Be bridge rectifier two outputs respectively line connect the two ends of output filter capacitor C, output filter capacitor C an end connect the end of the first cover excitation winding Lf1 again; The other end of the other end of Lf1 and output filter capacitor C is output dc voltage Udc.
3.. the two excitation winding segmented-rotor magnetic fluxs of compound excitation according to claim 1 switch brushless DC electric generator with dual salient poles, it is characterized in that: described bridge rectifier is uncontrollable rectification circuit or controlled rectification circuit.
4. the two excitation winding segmented-rotor magnetic fluxs of compound excitation according to claim 1 switch brushless DC electric generator with dual salient poles, it is characterized in that: the stator number of teeth and rotor number of poles are expanded and are: 12/5,12/7,12/8,12/10,12/11,24/10,24/14,24/16,24/20,24/22, wherein the slash front is the stator number of teeth, and the slash back is the segmented-rotor number of poles.
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| CN 201320013231 CN203039541U (en) | 2013-01-11 | 2013-01-11 | Compound excitation double-excitation winding segmented-rotor magnetic flux switching doubly salient brushless dc generator |
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| CN 201320013231 CN203039541U (en) | 2013-01-11 | 2013-01-11 | Compound excitation double-excitation winding segmented-rotor magnetic flux switching doubly salient brushless dc generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929031A (en) * | 2013-01-11 | 2014-07-16 | 济南吉美乐电源技术有限公司 | Composite-excitation double-excitation winding split rotor magnetic flux switching double-salient pole brushless DC generator |
| CN112104126A (en) * | 2020-09-03 | 2020-12-18 | 上海电力大学 | Three-phase 24/20-pole distributed electro-magnetic doubly salient wind driven generator |
-
2013
- 2013-01-11 CN CN 201320013231 patent/CN203039541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929031A (en) * | 2013-01-11 | 2014-07-16 | 济南吉美乐电源技术有限公司 | Composite-excitation double-excitation winding split rotor magnetic flux switching double-salient pole brushless DC generator |
| CN112104126A (en) * | 2020-09-03 | 2020-12-18 | 上海电力大学 | Three-phase 24/20-pole distributed electro-magnetic doubly salient wind driven generator |
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