CN101951099A - High-performance direct-current (DC) output permanent magnet generator system - Google Patents
High-performance direct-current (DC) output permanent magnet generator system Download PDFInfo
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- CN101951099A CN101951099A CN201010262242XA CN201010262242A CN101951099A CN 101951099 A CN101951099 A CN 101951099A CN 201010262242X A CN201010262242X A CN 201010262242XA CN 201010262242 A CN201010262242 A CN 201010262242A CN 101951099 A CN101951099 A CN 101951099A
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Abstract
The invention discloses a high-performance direct-current (DC) output permanent magnet generator system, which relates to the field of electrode, and solves the problem that higher harmonic current produced in the process of rectifying the current of a three-phase permanent magnet synchronous generator by a rectifier increases the copper consumption of windings and the losses of stator/rotor cores so as to lead the generator to be in serious calorification and cause the problem of aggravation of the vibration and noise of the stator/rotor. The generator system is composed of one three-phase permanent magnet synchronous generator and n three-phase rectifiers, wherein the stator of the three-phase permanent magnet synchronous generator is provided with n sets of three-phase windings and a core, and the electrical angle phase difference delta between each set of three-phase windings meets the following condition: delta is less than or equal to +/- 60 degrees per n; the output ends of each set of three-phase windings are connected with the AC input end of one three-phase rectifier, and the DC output ends of the three-phase rectifiers are connected in parallel or in series with each other so as to form a general output end. The generator system of the invention has the advantages of high power density, high efficiency, low vibration and noise, high average output voltage value, small voltage ripple, strong fault-tolerant capability, low manufacturing cost and the like. The generator system is applied in a wind power generation system.
Description
Technical field
The present invention relates to a kind of high-performance direct current output permanent-magnet electric generator system, belong to machine field.
Background technology
Magneto has lot of advantages owing to save excitation winding and collector ring that breaks down easily and brush as generator, and structure is comparatively simple, and processing and assembly fee reduce, and move more reliable.Rare earth permanent-magnetic generator has that volume is little, the shape and size of light weight, efficient height, motor can be versatile and flexible etc. remarkable advantage; Simultaneously, because it is very little to be in the magnetic permeability of the permanent magnet in the d-axis magnetic circuit, the more electric excitation synchronous generator of the d-axis reactance of armature reaction is much smaller, thereby inherent voltage regulation is littler than electric excitation synchronous generator.Therefore, small-sized wind power generator all adopts magneto alternator basically.
In wind generator system,, make the output voltage of wind-driven generator (particularly permanent magnet generator) in very large range fluctuate because the change of wind velocity scope is very big.Therefore, small generator often can not directly link to each other with load, but utilizes rectifier to change the alternating voltage in the armature winding, electrorheological into direct voltage, electric current, charges a battery, and electrical power storage is got up, by storage battery powering load (Fig. 6); Can also pass through a controlled rectification adjuster, make generator give load and storage battery power supply simultaneously.
But, after the armature winding of three-phase permanent synchronous generator connects diode rectifier, electric current in the winding can produce distortion, and no longer be sinusoidal wave, in the waveform except containing first-harmonic, also contain a large amount of 5 times, 7 inferior high order harmonic components, higher harmonic current can increase winding copper loss, stator and rotor cores loss, and it is serious to make that the motor feels hot; Simultaneously, also cause rotor vibration and noise aggravation.
Summary of the invention
The present invention is adopting rectifier to carry out producing higher harmonic current in the process of rectification at the electric current of three-phase permanent synchronous generator can to increase winding copper loss, stator and rotor cores loss in order to solve, and it is serious to make that the motor feels hot; Simultaneously, also cause the problem of rotor vibration and noise aggravation, and propose a kind of high-performance direct current output permanent-magnet electric generator system.
High-performance direct current output permanent-magnet electric generator system of the present invention is made of a three-phase permanent synchronous generator and n three-phase rectifier, be provided with n on the stator of described three-phase permanent synchronous generator and overlap three phase windings and iron core, the electrical degree phase difference δ between every cover three phase windings satisfies condition: δ≤± 60 °/n; The output of every cover three phase windings all links to each other with the ac input end of a three-phase rectifier, and the dc output end parallel connection or the series connection of n three-phase rectifier are total output.
The stator n of three-phase permanent synchronous generator overlaps the winding parameter that respectively overlaps of three phase windings both can be identical, also can be different.It both can be star connection, Y connection that the stator n of three-phase permanent synchronous generator overlaps three phase windings, also can be delta connection, can also be that star is mixed connection with triangle.The rotor of three-phase permanent synchronous generator can be embedded magnet structure, extrapolation magnet structure or surperficial magnet structure.The winding of three-phase permanent synchronous generator can be distributed winding, also can be for concentrating winding.Three-phase rectifier also can be the controlled rectifier that is made of power semiconductor (MOSFET, IGBT etc.).
The present invention adopts multiple winding magneto alternator and a plurality of rectifier to constitute generator system, by the reasonable Arrangement of winding, in the winding 5 times, 7 times, 11 times, 13 inferior higher harmonic currents is cancelled out each other, and makes the armature magnetomotive force sineization.Therefore, direct current output permanent-magnet electric generator system of the present invention has power density height, efficient height, vibration and advantages such as noise is low, output voltage average value is high, mains ripple is little, fault-tolerant ability is strong, low cost of manufacture.
Description of drawings
The structural representation of Fig. 1 high-performance direct current output of the present invention permanent-magnet electric generator system; Fig. 2 is that the permanent magnet generator winding that two cover three-phase individual layer chain type windings of embodiment six constitute launches schematic diagram; Fig. 3 to Fig. 5 is the structural representation of embodiment seven, Fig. 3 is the electric machine structure schematic diagram of embodiment seven, Fig. 4 is that the winding of embodiment seven is the structural representation of star connection, Y connection, and Fig. 5 is that the winding of embodiment seven is the structural representation of delta connection; Fig. 6 is existing wind generator system structural representation.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment is made of a three-phase permanent synchronous generator and n three-phase rectifier, be provided with n on the stator of described three-phase permanent synchronous generator and overlap three phase windings and iron core, the electrical degree phase difference δ between every cover three phase windings satisfies condition: δ≤± 60 °/n; The output of every cover three phase windings all links to each other with the ac input end of a three-phase rectifier, and the dc output end parallel connection or the series connection of n three-phase rectifier are total output.
Embodiment two: it is identical or different that present embodiment and embodiment one difference are that the n in the stator of three-phase permanent synchronous generator overlaps every cover winding parameter of three phase windings.Other composition is identical with embodiment one with connected mode.
Embodiment three: present embodiment and embodiment one or two differences are that it is that star connection, Y connection, delta connection or star are mixed connection with triangle that the n in the stator of three-phase permanent synchronous generator overlaps three phase windings.Other composition is identical with embodiment one or two with connected mode.
Embodiment four: present embodiment and embodiment three differences be three-phase permanent synchronous generator in n to overlap three phase windings be distributed winding or concentrated winding.Other composition is identical with embodiment three with connected mode.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, present embodiment and embodiment one difference are the controlled rectifier of one or four commutating phase devices for being made of power semiconductor.Other composition is identical with embodiment one or four with connected mode.
Embodiment six: present embodiment is described in conjunction with Fig. 2, present embodiment and embodiment one difference are that high-performance direct current output permanent-magnet electric generator system constitutes by a three-phase permanent synchronous generator with two diode rectifiers, the stator of described three-phase permanent synchronous generator is provided with two cover three-phase symmetric windings, the groove number of described motor stator is 24 grooves, the rotor number of poles is 4 utmost points, therefore the electrical degree that differs between adjacent two stator slots is 30 °, when two cover windings embed in stator slot, the winding axis groove that staggers, the output of every cover winding connects a diode rectifier, the direct current output bus parallel connection of two diode rectifiers is total output, and total output is given a common charge in batteries.Other composition is identical with embodiment one with connected mode.
Embodiment seven: in conjunction with Fig. 3 to Fig. 5 present embodiment is described, present embodiment and embodiment one difference are that high-performance direct current output permanent-magnet electric generator system constitutes by a three-phase permanent synchronous generator with two diode rectifiers, and described three-phase permanent synchronous generator number of stator slots is 12 grooves, the rotor number of poles is 10 utmost points, therefore the electrical degree that differs between adjacent two stator slots is 150 °, i.e. (30 °), and winding is made of concentrating coil, each coil is all on a stator tooth, U1 is arranged, X1, U2, X2, V1, Y1, V2, Y2, W1, Z1, W2, totally 12 coils of Z2 arranges on stator core tooth along circumference successively, wherein U1 connects with U2, and V1 connects with V2, and W1 connects with W2, these 6 coils on core tooth just around, constitute the 1st the cover winding; X1 connects with X2, and Y1 connects with Y2, and Z1 connects with Z2, and these 6 coils rewind on core tooth, constitutes the 2nd cover winding.The 1st cover winding and the 2nd cover winding both can be star connection, Y connection, also can be delta connection.When being star connection, Y connection, the head end of U1, V1, W1 is drawn head end A1, B1, C1 as winding, the tail end of U2, V2, W2 is attached to together as neutral point, the head end of X1, Y1, Z1 is drawn head end A2, B2, C2 as winding, and the tail end of X2, Y2, Z2 is attached to together as neutral point; When for delta connection, with the tail end of U2 and the head end of V1, the tail end of V2 and the head end of W1, the tail end of W2 is attached to respectively with the head end of U1, then three tie-points are drawn head end A1 respectively as winding, B1, C1, with the tail end of X2 and the head end of Y1, the tail end of Y2 and the head end of Z1, the tail end of Z2 is attached to respectively with the head end of X1, then three tie-points are drawn head end A2 respectively as winding, B2, C2, the output of every cover winding connects a diode rectifier, the direct current output bus parallel connection of two diode rectifiers is total output, and total output is given a common charge in batteries.Other composition is identical with embodiment one with connected mode.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
Claims (5)
1. high-performance direct current is exported permanent-magnet electric generator system, it is characterized in that it is made of a three-phase permanent synchronous generator and n three-phase rectifier, be provided with n on the stator of described three-phase permanent synchronous generator and overlap three phase windings and iron core, the electrical degree phase difference δ between every cover three phase windings satisfies condition: δ≤± 60 °/n; The output of every cover three phase windings all links to each other with the ac input end of a three-phase rectifier, and the dc output end parallel connection or the series connection of n three-phase rectifier are total output.
2. high-performance direct current according to claim 1 output permanent-magnet electric generator system, it is identical or different to it is characterized in that n in the stator of three-phase permanent synchronous generator overlaps every cover winding parameter of three phase windings.
3. high-performance direct current according to claim 1 and 2 output permanent-magnet electric generator system is characterized in that it is that star connection, Y connection, delta connection or star are mixed connection with triangle that n in the stator of three-phase permanent synchronous generator overlaps three phase windings.
4. high-performance direct current according to claim 3 output permanent-magnet electric generator system, it is characterized in that three-phase permanent synchronous generator in n to overlap three phase windings be distributed winding or concentrated winding.
5. according to claim 1 or 4 described high-performance direct current output permanent-magnet electric generator systems, it is characterized in that three-phase rectifier is the controlled rectifier that is made of power semiconductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010262242XA CN101951099A (en) | 2010-08-25 | 2010-08-25 | High-performance direct-current (DC) output permanent magnet generator system |
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| CN201010262242XA CN101951099A (en) | 2010-08-25 | 2010-08-25 | High-performance direct-current (DC) output permanent magnet generator system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664577A (en) * | 2012-05-02 | 2012-09-12 | 南京航空航天大学 | High-power-factor and high-reliability power supply dedicated for aeroengine |
| CN103944318A (en) * | 2014-04-25 | 2014-07-23 | 哈尔滨工业大学 | Multiphase high-speed alternating current motor system |
| CN104981973A (en) * | 2013-02-12 | 2015-10-14 | 三菱电机株式会社 | Motor drive device |
| CN105453389A (en) * | 2013-08-09 | 2016-03-30 | 三菱电机株式会社 | Motor |
| CN108768119A (en) * | 2018-06-21 | 2018-11-06 | 新疆金风科技股份有限公司 | Magneto alternator and permanent magnetism synchronous wind generating system |
| CN110504768A (en) * | 2018-05-18 | 2019-11-26 | 中车永济电机有限公司 | Stator module and motor |
| CN110994758A (en) * | 2019-11-26 | 2020-04-10 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN112242738A (en) * | 2020-09-25 | 2021-01-19 | 兰州万里航空机电有限责任公司 | Double three-phase permanent magnet synchronous generator and rectification system |
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| CN2126942Y (en) * | 1992-06-24 | 1993-02-10 | 陈景华 | Brushless d.c. permanent-magnet generator |
| EP0454039B1 (en) * | 1990-04-24 | 1996-10-23 | Nippondenso Co., Ltd. | Alternating current generator having a plurality of independent three-phase windings |
| CN101325357A (en) * | 2007-06-15 | 2008-12-17 | 陈国弟 | Automobile permanent magnet generator with tiny output voltage ripple |
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2010
- 2010-08-25 CN CN201010262242XA patent/CN101951099A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454039B1 (en) * | 1990-04-24 | 1996-10-23 | Nippondenso Co., Ltd. | Alternating current generator having a plurality of independent three-phase windings |
| CN2126942Y (en) * | 1992-06-24 | 1993-02-10 | 陈景华 | Brushless d.c. permanent-magnet generator |
| CN101325357A (en) * | 2007-06-15 | 2008-12-17 | 陈国弟 | Automobile permanent magnet generator with tiny output voltage ripple |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664577A (en) * | 2012-05-02 | 2012-09-12 | 南京航空航天大学 | High-power-factor and high-reliability power supply dedicated for aeroengine |
| CN104981973A (en) * | 2013-02-12 | 2015-10-14 | 三菱电机株式会社 | Motor drive device |
| CN104981973B (en) * | 2013-02-12 | 2018-02-16 | 三菱电机株式会社 | Motor drive |
| CN105453389A (en) * | 2013-08-09 | 2016-03-30 | 三菱电机株式会社 | Motor |
| CN105453389B (en) * | 2013-08-09 | 2018-11-23 | 三菱电机株式会社 | Motor |
| CN103944318A (en) * | 2014-04-25 | 2014-07-23 | 哈尔滨工业大学 | Multiphase high-speed alternating current motor system |
| CN103944318B (en) * | 2014-04-25 | 2016-09-14 | 哈尔滨工业大学 | Heterogeneous high speed alternator driven electric system |
| CN110504768A (en) * | 2018-05-18 | 2019-11-26 | 中车永济电机有限公司 | Stator module and motor |
| CN108768119A (en) * | 2018-06-21 | 2018-11-06 | 新疆金风科技股份有限公司 | Magneto alternator and permanent magnetism synchronous wind generating system |
| CN110994758A (en) * | 2019-11-26 | 2020-04-10 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN110994758B (en) * | 2019-11-26 | 2024-02-02 | 中车大连机车车辆有限公司 | Diesel locomotive and power generation system thereof |
| CN112242738A (en) * | 2020-09-25 | 2021-01-19 | 兰州万里航空机电有限责任公司 | Double three-phase permanent magnet synchronous generator and rectification system |
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Open date: 20110119 |