CN100362732C - Permanent magnet compensation type pulse AC generator - Google Patents
Permanent magnet compensation type pulse AC generator Download PDFInfo
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- CN100362732C CN100362732C CNB2004100606200A CN200410060620A CN100362732C CN 100362732 C CN100362732 C CN 100362732C CN B2004100606200 A CNB2004100606200 A CN B2004100606200A CN 200410060620 A CN200410060620 A CN 200410060620A CN 100362732 C CN100362732 C CN 100362732C
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Abstract
The present invention relates to a permanent-magnet compensation type pulse AC generator belonging to a motor. Aiming at the disadvantages of the existing compensation type pulse AC generators, the permanent-magnet compensation type pulse AC generator increases reliability, enhances efficiency, reduces volume and reduces electromagnetic interference. The stator of the permanent-magnet compensation type pulse AC generator is formed by the superposition of silicon steel sheets; the internal of the stator is a hollow cavity; an armature coil is fixed on the internal surface of the stator, and the armature coil is connected with the internal surface of the stator by an end connecting part extending out of a stator core; a rotor is arranged inside the stator and is driven to rotate by a prime mover; a rotor body is made of ferromagnetic materials; permanent magnets are made of rare earth permanent-magnet materials and are tightly arranged on the external surfaces of a rotor body at intervals; magnetism isolating materials are arranged among the permanent magnets; a shielding cylinder is sheathed outside the permanent magnets and the magnetism isolating materials to fix the permanent magnets and the magnetism isolating materials. Using the permanent magnets as excitation sources, the permanent-magnet compensation type pulse AC generator omits exciting circuits, which effectively avoids the problems of brush ablation, disturbance of electromagnetic fields, etc. caused by a slip ring of a brush. Simultaneously, the permanent-magnet compensation type pulse AC generator improves the work efficiency of the system, lowers complexity and possibly and further improves the working rotary speed of the generator.
Description
Technical field
The invention belongs to a kind of motor, be specifically related to Compensated Pulsed Alternator.
Background technology
Existing Compensated Pulsed Alternator, its general way that applies current excitation that adopts in magnetic field that is used for excitation produces, and driving source can add, and also can be produced by armature supply.Yet, because no matter rotor rotation is to adopt rotating armature, or rotating excitation magnetic field, all have the problem that is electrically connected of rotating part and stationary part.Especially power is big more, and it is difficult more that it is electrically connected problem.It is described to show " Electrical Motor " (1987) according to Wang Guoliang, and the general at present connectivity scenario that adopts mainly is that slip ring and brush cooperate, thereby brings a lot of problems: 1) wear of brush and ablation.2) brush and slip ring contact performance are because the contact resistance increase that flexibility decrease is brought.3) electric current produces electric spark, the interference of electromagnetic field problem of bringing by brush and armature.4) reduced the operating efficiency of complete machine.5) limited the further lifting of generator working speed.In addition,, also need a cover field power supply device, increased the complexity and the volume of system for the motor of separate excitation mode work.
Summary of the invention
At the shortcoming of present Compensated Pulsed Alternator, the invention provides a kind of permanent-magnet compensation formula Pulsed Alternator, thus the variety of problems that solution slip ring and brush bring, to reach the increase reliability, improve the complete machine operating efficiency, reduce system bulk, reduce the purpose of electromagnetic interference simultaneously.
A kind of permanent-magnet compensation formula Pulsed Alternator proposed by the invention comprises a stator, a cover and is fixed on and is used on the stator to produce and armature coil, a rotor of projected current and be used for the bearing of support rotor rotation usefulness, it is characterized in that:
(1) described stator is formed by stacking by silicon steel sheet, and inside is circular cavity, is used for placing rotor, and the working portion of armature coil conductor is fixed on stator inner surface, connects by the termination portion of stretching out the stator core outside;
(2) described rotor is made of rotor body, rotating shaft, shielding cylinder, permanent magnet and non-magnetic NULL, and rotor body is made of ferromagnetic material, and combines closely with rotating shaft; Permanent magnet adopts the rare earth permanent-magnetic material of high-coercive force, and tight spacing is arranged in the outer surface of rotor body; NULL is positioned between the permanent magnet; Shielding cylinder is enclosed within permanent magnet and NULL outside, plays the purpose of fixed permanent magnet and NULL simultaneously; Rotor is placed on stator interior, by the bearing fixing position, by prime mover driven rotary.
Above-mentioned permanent-magnet compensation formula Pulsed Alternator, its further feature are that armature coil conductor connects by the termination portion of stretching out the stator core outside; According to its arrangement and connected mode in stator interior, described armature coil winding can constitute single-phase, two-phase or heterogeneous form, and every phase electromotive force has different voltage-phases according to its position.
Above-mentioned permanent-magnet compensation formula Pulsed Alternator, described permanent magnet cross section can be for fan-shaped; Described NULL, cross section can also be positioned between the permanent magnet for fan-shaped; Described shielding cylinder is processed into cylindrical shape by good conductive material.
The external shape of stator can have multiple, to adapt to different occasions and needs are installed.The working portion of armature coil conductor utilizes high-strength structureal adhesives to stick on stator inner surface, connects by the termination portion of stretching out the stator core outside, and its connected mode can have multiple.The operation principle of this device is as follows:
Provide magnetic pumping by permanent magnet, the path of the magnetic field process of its generation is permanent magnet 1-shielding cylinder-air gap-armature winding-stator core-armature winding-air gap-shielding cylinder-permanent magnet 2-rotor core-permanent magnet 1.Why directly armature winding directly being sticked on stator inner surface rather than be placed on like that in the groove as motor, mainly is in order to overcome the increase of the saturated and armature winding leakage inductance that teeth groove causes of tooth portion magnetic circuit that teeth groove may bring.When rotor carries out high speed rotating by prime mover drive, because the rotor rotation is followed in magnetic field, make armature winding produce the cutting electromotive force, thereby at armature winding exit generation voltage.Therefore because magnetic field is for rotation, what produce at the armature winding exit also is the voltage of alternation.When needs impulse generator power output, utilize external switch that armature winding is connected with load, just can reach purpose to the load power output.The effect of shielding cylinder is when impulse generator during to load discharge in the device, because the eddy current effect of shielding cylinder, the armature reaction that armature winding produces can not enter rotor, thereby has reduced the equivalent inductance of armature winding greatly, has improved the ability of impulse generator power output.
Owing to adopt the driving source of permanent magnet as magnetic field, therefore saved the field circuit of general indemnity formula impulse generator, thereby avoided effectively that electric brush slip ring brings such as problems such as brush ablation, the interference of electromagnetic field.Improved the operating efficiency of generator system simultaneously, and, reduced the complexity of system, and might further improve the generator working speed owing to saved excitation unit.
Description of drawings
Fig. 1 is a stationary part schematic diagram of the present invention, and Fig. 1 a is the sectional view of stator structure, and Fig. 1 b is the end view of stator structure.
Fig. 2 is a rotor portion schematic diagram of the present invention, and Fig. 2 a is the rotor structure sectional view, and Fig. 2 b is the rotor structure end view.
Fig. 3 is the armature winding wiring schematic diagram.
Embodiment
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one:
Constitute a permanent-magnet compensation formula Pulsed Alternator by stator shown in Figure 1 and rotor shown in Figure 2.Shown in the figure is that a concrete quarternary vein is towards alternating current generator.Four utmost point motors can be regarded as the simple repetition of a basic two-stage electric motor, and are in full accord to potential waveform under the pole-face at each.Fig. 1 a is the sectional view of stator structure, and Fig. 1 b is the end view of stator structure.The armature winding of installing on the stator among the figure 1 utilizes the high strength glue at stator inner surface.Stator body 2 constitutes by silicon steel sheet is superimposed.Fig. 2 a is the rotor structure sectional view, and Fig. 2 b is the rotor structure end view.Rotor among the figure is made of rotating shaft 4, rotor body 5, permanent magnet 7, NULL 6 and shielding cylinder 3.The permanent magnet of installing 7 is rare-earth permanent magnet (neodymium iron boron), has the residual magnetic flux density height, the characteristic of high-coercive force and high energy product, its cross section is processed into fan-shaped, whole shape constitutes tile shape, and closely is arranged in rotor body 5 surfaces, constitutes 4 magnetic poles.NULL 6 uses aluminum to process, and is fixed on rotor body.
In the present embodiment, armature winding adopts two phase windings, and this two-phase is mutually orthogonal in the locus.The connection layout of armature winding is seen Fig. 3, and a1 is a cover winding of a phase among the figure, and a2 is a synchronous other cover winding.B1 be with a mutually quadrature the b phase one the cover winding, in like manner b2 be the b phase other one the cover winding.A can carry out parallel connection with two cover windings of b phase according to the needs of load in externally being connected mutually or series connection is used.Every straight line is represented 8 circle conductors among the figure.The conductor number of the every extremely every phase of motor is 16.16 circle coils are just arranged under each pole-face.Provide magnetic pumping and the path of the magnetic field process that produces is the permanent magnet 1-shielding cylinder-air gap-armature winding-stator core-armature winding-air gap-shielding cylinder-permanent magnet 2-rotor core-permanent magnet 1 among Fig. 2 by permanent magnet.The path, magnetic field is identical under a pair of in addition pole-face.When the rotor rotation, permanent magnet rotates thereupon, produces induced potential in armature winding, and draw at port this 16 circle coil electromotive force series connection back.Draw four groups of voltages at port altogether, its phase difference of the voltage of out of phase is 90 degree.According to the general theory of AC Electrical Machine Winding, the induced potential effective value of generation is E=4.44fw φ k.Wherein f is the frequency of induced potential, and f=np/60 is arranged, and (p: the motor number of pole-pairs, n: motor speed), w is every number of turn of contacting mutually.φ is every utmost point magnetic flux.K is a winding coefficient.And the coil of the same phase place of different pole-faces can be connected, also can be in parallel, decide according to the loaded work piece situation.
After motor speed reached certain value, the output potential of armature winding reached predetermined value, and can export power and the current waveform that needs this moment by external discharge loop and control loop control generator.
Need to prove that small electromotor structure and working method described in the invention have some distortion.For example require the connected mode different to winding according to processing technology; Difference that NULL is used or the like.All these conspicuous modification all should be considered as content disclosed in this invention and protection scope of the present invention.
Embodiment two:
Stator structure and embodiment one are in full accord.Difference is that the armature end-connections connected mode adopts concentric type to connect.Connected mode is simple, the signal of no longer drawing.Certainly, winding also can adopt the mode of lap winding to connect.Rotor structure is also consistent with embodiment one, just NULL is replaced by epoxy resin.
Claims (3)
1. permanent-magnet compensation formula Pulsed Alternator comprises a stator, a cover and is fixed on and is used on the stator to produce and armature coil, a rotor of projected current and be used for the bearing of support rotor rotation usefulness, it is characterized in that:
Described stator is formed by stacking by silicon steel sheet, and inside is circular cavity, is used for placing rotor, and the working portion of armature coil conductor is fixed on stator inner surface, connects by the termination portion of stretching out the stator core outside;
Described rotor is made of rotor body, rotating shaft, shielding cylinder, permanent magnet and non-magnetic NULL, and rotor body is made of ferromagnetic material, and combines closely with rotating shaft; Permanent magnet adopts the rare earth permanent-magnetic material of high-coercive force, and tight spacing is arranged in the outer surface of rotor body; NULL is positioned between the permanent magnet; Shielding cylinder is processed into cylindrical shape by good conductive material, is enclosed within permanent magnet and NULL outside, plays the purpose of fixed permanent magnet and NULL simultaneously; Rotor is placed on stator interior, by the bearing fixing position, by prime mover driven rotary.
2. permanent-magnet compensation formula Pulsed Alternator as claimed in claim 1 is characterized in that armature coil conductor connects by the termination portion of stretching out the stator core outside; According to its arrangement and connected mode in stator interior, described armature coil winding constitutes single-phase, two-phase or heterogeneous form, and every phase electromotive force has different voltage-phases according to its position.
3. permanent-magnet compensation formula Pulsed Alternator as claimed in claim 1 or 2 is characterized in that described permanent magnet cross section is fan-shaped; Described NULL, cross section also are fan-shaped, are positioned between the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100606200A CN100362732C (en) | 2004-07-22 | 2004-07-22 | Permanent magnet compensation type pulse AC generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100606200A CN100362732C (en) | 2004-07-22 | 2004-07-22 | Permanent magnet compensation type pulse AC generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588767A CN1588767A (en) | 2005-03-02 |
| CN100362732C true CN100362732C (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100606200A Expired - Fee Related CN100362732C (en) | 2004-07-22 | 2004-07-22 | Permanent magnet compensation type pulse AC generator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145725B (en) * | 2007-07-30 | 2010-09-08 | 哈尔滨工业大学 | Self-excitation full empty core passive compensation pulse generator |
| CN104135091B (en) * | 2014-08-27 | 2017-01-25 | 宁夏西北骏马电机制造股份有限公司 | Compensation type pulse generator stator processing technology |
| DE102015016978A1 (en) * | 2015-12-24 | 2017-06-29 | Audi Ag | Electric machine for a motor vehicle and motor vehicle |
| CN106253508B (en) * | 2016-07-14 | 2020-08-11 | 嘉兴学院 | Angular vibration exciting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141618Y (en) * | 1992-09-15 | 1993-09-01 | 天津大学 | Single-phase brushfree neodymium iron boron ac generator |
| CN1253406A (en) * | 1999-11-10 | 2000-05-17 | 华中理工大学 | Compensating pulse electric generator |
| CN2622912Y (en) * | 2003-03-25 | 2004-06-30 | 泰豪科技股份有限公司 | Constant voltage permanent-magnet generator |
| CN2762424Y (en) * | 2004-07-22 | 2006-03-01 | 华中科技大学 | Permanent magnetic compensation pulse AC generator |
-
2004
- 2004-07-22 CN CNB2004100606200A patent/CN100362732C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141618Y (en) * | 1992-09-15 | 1993-09-01 | 天津大学 | Single-phase brushfree neodymium iron boron ac generator |
| CN1253406A (en) * | 1999-11-10 | 2000-05-17 | 华中理工大学 | Compensating pulse electric generator |
| CN2622912Y (en) * | 2003-03-25 | 2004-06-30 | 泰豪科技股份有限公司 | Constant voltage permanent-magnet generator |
| CN2762424Y (en) * | 2004-07-22 | 2006-03-01 | 华中科技大学 | Permanent magnetic compensation pulse AC generator |
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| CN1588767A (en) | 2005-03-02 |
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