CN103414304A - Rare-earth permanent magnet generator - Google Patents
Rare-earth permanent magnet generator Download PDFInfo
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- CN103414304A CN103414304A CN2013103500141A CN201310350014A CN103414304A CN 103414304 A CN103414304 A CN 103414304A CN 2013103500141 A CN2013103500141 A CN 2013103500141A CN 201310350014 A CN201310350014 A CN 201310350014A CN 103414304 A CN103414304 A CN 103414304A
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- stator
- earth permanent
- winding
- switch
- electromotive force
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Abstract
The invention provides a rare-earth permanent magnet generator which comprises a rotor and a stator. The rare-earth permanent magnet generator is characterized in that the stator is arranged outside the rotor and comprises at least two turns of windings which are connected in series and have the same phase position, and each turn of winding is connected with a switch which is used for controlling the turn of the winding to be in a short-circuit condition or a connection condition. When the rare-earth permanent magnet generator works, if loads are increased, the output electromotive potential of the rare-earth permanent magnet generator will decline, at the moment, the turns of working windings in the stator can be increased by disconnecting one or more switches, and accordingly the output electromotive potential is compensated and made to keep stable. When the rare-earth permanent magnet generator works, the turns of the working windings in the stator are changed by controlling connection and disconnection of the switches, so that changes, caused by changes of the loads, of the output electromotive potential of the generator are compensated, and the adjustment process is simple and reliable.
Description
Technical field
The invention belongs to technical field of generators, particularly relate to a kind of rare-earth permanent-magnet AC generator.
Background technology
Alternating current generator has following characteristic: when load was risen, the output electromotive force of generator can descend, and therefore cause voltage instability, so power plant can set up generally synchronous machine to compensate voltage.But set up synchronous machine to compensate voltage, can increase cost of electricity-generating, and, owing to increasing the synchronous machine compensation that is connected to the grid, cause compensation process complexity and effect bad.
Summary of the invention
The invention provides a kind of rare earth permanent-magnetic generator, its objective is and solve the problems referred to above that existing technology exists, make rare earth permanent-magnetic generator can stablize the output electromotive force and adjustment process simple.
The present invention realizes by following technical proposal:
A kind of rare earth permanent-magnetic generator, comprise rotor and stator, it is characterized in that, described stator is arranged on outside rotor, described stator comprises at least two circle series connection and synchronous windings, and described every circle winding all is parallel with the switch that makes it to be in short-circuit condition or connection status be used to controlling this circle winding;
The two ends of above-mentioned switch connect respectively the two ends of corresponding winding; When switch disconnected, the winding corresponding with this switch connected, thereby increased the number of turn of the Working winding in stator; When switch was closed, the winding corresponding with this switch was by short circuit, thus the number of turn of Working winding in the minimizing stator;
When rare earth permanent-magnetic generator is worked, if load increases, the output electromotive force of rare earth permanent-magnetic generator can descend, now can be by disconnecting one or more above-mentioned switch to increase the number of turn of Working winding in stator, thereby the output electromotive force is compensated, make to export electromotive force and keep stable;
When rare earth permanent-magnetic generator is worked, if load reduces, the output electromotive force of rare earth permanent-magnetic generator can rise, and now can, by closed one or more above-mentioned switch to reduce the number of turn of Working winding in stator, make to export electromotive force and keep stable.
Beneficial effect of the present invention is:
When generator is worked, utilize disconnection or the closure of control switch, the number of turn that changes Working winding in stator compensates the variation that causes generator output electromotive force because of load variations, and adjustment process is simple and reliable.
The accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present invention.
Embodiment
Be below specific embodiments of the invention, and by reference to the accompanying drawings technical scheme of the present invention be further described, but the present invention is not limited to these embodiment.
As shown in Figure 1, a kind of rare earth permanent-magnetic generator of the present invention comprises rotor 1 and stator 2, rotor 1 is arranged on stator 2 inside, stator 2 outputs connect load 6, comprise the above series connection of at least two circles or two circles and synchronous winding 4, at the two ends of every circle winding 4, all be connected in parallel on the corresponding n circle of the switch 3(winding that is in short-circuit condition or normal connection status be used to controlling this corresponding circle winding 4, k is just arranged
1, k
2To k
nN switch k).When switch 3 disconnected, the winding 4 corresponding with this switch 3 connected, thereby can increase the Working winding number of turn N in stator 2; When switch 3 was closed, the winding 4 corresponding with this switch 3 was by short circuit, thus Working winding number of turn N in minimizing stator 2.So-called Working winding is exactly in stator 2, to be in the winding of connection status.
In the present invention, the output electromotive force E=4.44FN Ф K of stator 2
W1, N is more than or equal to 2.Wherein F is the stator work frequency; N is the Working winding number of turn; Ф is magnetic flux; K
W1Be the comprehensive of stator parameter, comprise the temperature correlation of copper factor and the generator environment of living in of material, stator grooved, rule.After generator completes, F, Ф, K
W1Be definite value, now electromotive force E and Working winding number of turn N are monobasic linear function relation, that is to say when Working winding number of turn N changes, and stator 2 output electromotive force E also can change.
When rare earth permanent-magnetic generator is worked, if load increases, the output electromotive force E of rare earth permanent-magnetic generator can descend, now can be by disconnecting one or more above-mentioned switch 3 to increase Working winding number of turn N in stator 2, thereby E compensates to the output electromotive force, also namely exporting electromotive force E increases, and keeps stable thereby make to export electromotive force E;
When rare earth permanent-magnetic generator is worked, if load reduces, the output electromotive force E of rare earth permanent-magnetic generator can rise, now can be by closed one or more above-mentioned switch 3 to reduce Working winding number of turn N in stator 2, make to export electromotive force E and reduce, keep stable thereby make to export electromotive force E.
Therefore by the output electromotive force E of said stator 2 and the relational expression of Working winding number of turn N, can learn that the operation principle of rare earth permanent-magnetic generator of the present invention is as follows:
When load variations, cause that generator output electromotive force E changes, for the tendency of changes that makes electromotive force E is stablized, therefore the quantity of Working winding number of turn N that can be by regulating stator 2 makes up the voltage fluctuation produced because of load variations, therefore can regard the voltage in 2 of the front and back process that increases winding as constant.For example, when the variable quantity 10～20 of electromotive force E, if 10～20th, one step completed, i.e. N=1, amplitude will be very large so, if but 10～20th, completing minutes for 100 times, the relatively last variation of so each 0.05 amplification is constant substantially.Therefore, when Working winding number of turn N was more, the variation of electromotive force E more trend was stable, even therefore rare earth permanent-magnetic generator of the present invention is in the situation that load variations also can be regulated simply accurately and the stable output electromotive force.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (1)
1. rare earth permanent-magnetic generator, comprise rotor and stator, it is characterized in that, described stator is arranged on outside rotor, described stator comprises at least two circle series connection and synchronous windings, and described every circle winding all is parallel with the switch that makes it to be in short-circuit condition or connection status be used to controlling this circle winding;
The two ends of above-mentioned switch connect respectively the two ends of corresponding winding; When switch disconnected, the winding corresponding with this switch connected, thereby increased the number of turn of the Working winding in stator; When switch was closed, the winding corresponding with this switch was by short circuit, thus the number of turn of Working winding in the minimizing stator;
When rare earth permanent-magnetic generator is worked, if load increases, the output electromotive force of rare earth permanent-magnetic generator can descend, now can be by disconnecting one or more above-mentioned switch to increase the number of turn of Working winding in stator, thereby the output electromotive force is compensated, make to export electromotive force and keep stable;
When rare earth permanent-magnetic generator is worked, if load reduces, the output electromotive force of rare earth permanent-magnetic generator can rise, and now can, by closed one or more above-mentioned switch to reduce the number of turn of Working winding in stator, make to export electromotive force and keep stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103500141A CN103414304A (en) | 2013-08-12 | 2013-08-12 | Rare-earth permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103500141A CN103414304A (en) | 2013-08-12 | 2013-08-12 | Rare-earth permanent magnet generator |
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| CN103414304A true CN103414304A (en) | 2013-11-27 |
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| CN2013103500141A Pending CN103414304A (en) | 2013-08-12 | 2013-08-12 | Rare-earth permanent magnet generator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577499Y (en) * | 2002-07-10 | 2003-10-01 | 牛成民 | Voltage-stabilizing permanent-magnetic generator |
| CN1921289A (en) * | 2005-07-20 | 2007-02-28 | 哈米尔顿森德斯特兰德公司 | Buck/boost method of voltage regulation for a permanent magnet generator (PMG) |
| CN101594019A (en) * | 2009-04-13 | 2009-12-02 | 北京前沿科学研究所 | Array type frequency-stabilizing permanent magnet wind-driven generator |
| CN102810923A (en) * | 2011-06-02 | 2012-12-05 | 通用汽车环球科技运作有限责任公司 | Electric drive with electronically scalable reconfigurable winding |
| CN203416137U (en) * | 2013-08-12 | 2014-01-29 | 浙江兴坤动力有限公司 | Rare earth permanent magnet generator |
-
2013
- 2013-08-12 CN CN2013103500141A patent/CN103414304A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577499Y (en) * | 2002-07-10 | 2003-10-01 | 牛成民 | Voltage-stabilizing permanent-magnetic generator |
| CN1921289A (en) * | 2005-07-20 | 2007-02-28 | 哈米尔顿森德斯特兰德公司 | Buck/boost method of voltage regulation for a permanent magnet generator (PMG) |
| CN101594019A (en) * | 2009-04-13 | 2009-12-02 | 北京前沿科学研究所 | Array type frequency-stabilizing permanent magnet wind-driven generator |
| CN102810923A (en) * | 2011-06-02 | 2012-12-05 | 通用汽车环球科技运作有限责任公司 | Electric drive with electronically scalable reconfigurable winding |
| CN203416137U (en) * | 2013-08-12 | 2014-01-29 | 浙江兴坤动力有限公司 | Rare earth permanent magnet generator |
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Application publication date: 20131127 |