CN101567595B - Composite voltage regulating three-phase permanent magnet electricity generator - Google Patents
Composite voltage regulating three-phase permanent magnet electricity generator Download PDFInfo
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- CN101567595B CN101567595B CN2009101154383A CN200910115438A CN101567595B CN 101567595 B CN101567595 B CN 101567595B CN 2009101154383 A CN2009101154383 A CN 2009101154383A CN 200910115438 A CN200910115438 A CN 200910115438A CN 101567595 B CN101567595 B CN 101567595B
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Abstract
The invention provides a composite voltage regulating three-phase permanent magnet electricity generator, characterized in the two three-phase symmetric winding are disposed in the stator iron core, a permanent magnet is disposed in the rotor. Two three-phase symmetric winding are disposed in the stator iron core, the first being a main winding which is a three-phase asymmetric AC winding with tap, the second being an auxiliary winding which is a three-phase asymmetric AC winding as the same phase of the main winding but without tap. Both of winding are lap type windings with different steps, with coil turn ratio between the large step and small step at 2:1. And output voltage is changed by switching on and off related tap according to different conditions. Technical effect of the invention is: 1. structure simplification is lowered by implementing voltage regulation of permanent magnet generator without excitation portion; 2. manufacturability is great, content of magnetic potential harmonic is low, performance is great; 3. voltage regulation rate is controlled within 3% without the need of voltage regulator, making the generator high in reliability, and convenient for use.
Description
Technical field
The present invention relates to a kind of power-supply device, relate in particular to a kind of three-phase permanent magnet electricity generator of composite voltage regulating.
Background technology
Three-phase permanent magnet electricity generator pressure regulation difficulty; Existing composite excitation mode solves this difficulty; Can realize pressure regulation, but the composite excitation mode needs the additional electrical excitation generator, make and be actually the mixed structure pattern that a permanent magnet generator adds such two generators of electric excitation generator; The complex structure cost is high, and the advantage performance of permanent magnet excitation is very limited.For simplified structure reduces cost, bring into play the advantage of permanent magnet excitation generator better, the pressure regulation method that the invention three-phase permanent magnet electricity generator is new is necessary.
Summary of the invention
The object of the present invention is to provide a kind of three-phase permanent magnet electricity generator of composite voltage regulating, it is the tap of conversion main winding that this generator is one, to realize that changing the main winding number of turn reaches the size that changes output voltage; One is to utilize auxiliary winding magnetic potential to have or does not have, the greatly still little main winding armature mmf that changes, from and increased by one and regulated the big or small means of main winding output voltage; The method that is different from composite excitation is compared designs simplification with the composite excitation method; Axial length is short; Cost reduces, and has bigger economy and practicality, and is convenient to promote.
The present invention realizes that like this it comprises stator and rotor, it is characterized in that generator has only a stator and a rotor; Be furnished with permanent magnet in the rotor, two cover three-phase symmetric windings are arranged in the stator, first cover is a main winding; Main winding is a kind of three-phase symmetrical alternating current winding with tap, and second cover is auxiliary winding, auxiliary winding be with main winding with the number of poles same-phase but there is not the three-phase symmetrical alternating current winding of tap; Two cover windings all are the repeatedly formula windings with two different pitches, but coarse pitch is different with the fine pith coil turn, and coarse pitch and fine pith turns ratio are got 2: 1 fixed relationship; Main winding is every to have two taps mutually; Three-phase is totally six taps, is switched on or switched off relevant tap according to different working conditions, then changes the size of output voltage; The every string mutually of auxiliary winding has electric capacity c, and when forming closed circuit, auxiliary winding produces independently magnetic potential, and closed circuit breaks off, and no current flows through in the then auxiliary winding, does not form additional magnetic potential.
Technique effect of the present invention is: 1, got rid of the electric excitation generator in the Hybrid Exciting Permanent Magnet Generator, need not be electric the excitation part just can realize the pressure regulation of permanent magnet generator, the reduction of designs simplification cost; 2, two cover three-phase symmetric winding patterns are unified, simple in the stator, good manufacturability, and the harmonics of magnetic force content is little, and motor performance is good; 3, voltage regulation can be in 3%, need not electronic voltage controller (AVR), and reliability is high, and is easy to use.
Description of drawings
Fig. 1 is a stator winding layout plan of the present invention.
Fig. 2 is an electrical schematic diagram of the present invention.
Embodiment
Implement a 12KW three-phase permanent magnet electricity generator, number of stator slots Z=24, number of poles 2P=2, number of phases m=3.Stator winding figure, as shown in Figure 1, the stator main winding is a kind of lap winding type winding of two kinds of different pitches, every middle mutually coarse pitch coil turn is that fixed relationship was 2: 1 with the ratio of fine pith coil turn.With the U phase winding is that example is described below:
Big coil span is 96 coils that have, and they are 1-10,2-11,3-12,22-13,23-14,24-15;
The small coil pitch is 44 coils that have, and they are 4-8,5-9,21-17,20-16;
Each big coil turn and each small coil turn ratio are fixed relationship 2: 1; U, V, W three is symmetrical, and promptly the U phase winding is UN, and the V phase winding is VN, and the W phase winding is that WN arranges, 120 ° of electrical degrees of mutual deviation are though the VN that do not draw among the figure, WN VN, that WN forms pattern is fully the same with UN, so repeat no more at this.The U phase winding is UN, is by UU
2, U
2U
1, U
1These three windings in series of N form, and two taps are arranged is U
1, and U
2, it is worthy of note U
1N, U
2U
1, UU
2In big small coil is all arranged, during this instance is implemented, U
1The N winding coil number of turn from big to small is 16,16,16,8,8; U
2U
1The winding coil number of turn from big to small is 2,2,2,1,1; UU
2The winding coil number of turn from big to small is 2,2,2,1,1; V in like manner
1N, V
2V
1, VV
2W
1N, W
2W
1, WW
2The pattern number of turn is all with above-mentioned the same, and the VN winding of V phase is by VV
2, V
2V
1, V
1These three windings in series of N form, and two tap V are arranged
1And V
2The WN winding of W phase is by WW
2, W
2W
1, W
1These three windings in series of N form, and two tap W are arranged
1And W
2U, V, W, N three-phase four-wire system; In like manner the auxiliary winding three-phase a of stator, b, c are made up of a0, b0, c0 three-phase symmetric winding respectively, the complete and U of a0 pattern
1N is similar, but the winding coil number of turn from big to small is 4,4,4; 2,2, it is a, b, c, 0 that a0, b0, c0 three-phase and four-line connect the method outlet, these characteristics of said stator main winding and auxiliary winding; Guarantee that harmonic magnetic potential content is little, through the fourier series sorrow analysis in the facies tract magnetic potential that this two covers winding forms when flowing through electric current; Can know do not contain 3 times and 3 multiple subharmonic, 5 times, 7 subharmonic content also very little, so good voltage waveform, vibrating noise is little; The assorted consumption of harmonic wave is little, and efficient is high, and the performance of generator is good.
As shown in Figure 2, U, V, W, N are that the generator main winding connects the method power supply by three-phase four-wire system Y, and N is the neutral line, and output token is U, V, W, N.Every have two taps mutually, like U U arranged mutually
1, U
2, V has V mutually
1, V
2W has W mutually
1, W
2U
1U
2, V
1V
2, W
1W
2Between be connected to normally closed switch K
1And the resistance R of adjusting
1, U2U, V
2V, W
2Be connected to normally closed switch K between W
2And the resistance R of adjusting
2, select the suitable resistance R of adjusting
1And R
2Value, the output voltage in the time of can adjusting unloaded and load (COS=1).Auxiliary winding a, b, c three-phase and U, V, W three same phases, each goes here and there a, b, c three-phase capacitor C is arranged, seal in capacitor C after line end be labeled as a ', b ', c ' respectively; Between a ' and b ', b ' and c ' is connected to normal open switch K3, the neutral line of a, b, c three-phase be 0 and the neutral line N of U, V, W between also be connected to normal open switch K4.
The working method according to the form below:
By this complex method pressure regulation, the three-phase permanent magnet electricity generator voltage regulation is less than 3%, and the ability that starts asynchronous motor is strong, and directly starting power is greater than the threephase asynchronous of this machine rated power 70%.It is thus clear that three-phase permanent magnet electricity generator of the present invention need not the additional electrical exciter, and voltage regulation is reached in 3%, pressure regulating performance is good, and is simple in structure, and cost is low, good economy performance, and reliability is high.
Claims (1)
1. the three-phase permanent magnet electricity generator of a composite voltage regulating, it comprises stator and rotor, it is characterized in that generator has only a stator and a rotor; Be furnished with permanent magnet in the rotor, two cover three-phase symmetric windings are arranged in the stator, first cover is a main winding; Main winding is a kind of three-phase symmetrical alternating current winding with tap, and second cover is auxiliary winding, auxiliary winding be with main winding with the number of poles same-phase but there is not the three-phase symmetrical alternating current winding of tap; Two cover windings all are the repeatedly formula windings with two different pitches, but coarse pitch is different with the fine pith coil turn, and coarse pitch and fine pith turns ratio are got 2: 1 fixed relationship; Main winding is every to have two taps mutually; Three-phase is totally six taps, is switched on or switched off relevant tap according to different working conditions, then changes the size of output voltage; The every string mutually of auxiliary winding has electric capacity c, and when forming closed circuit, auxiliary winding produces independently magnetic potential, and closed circuit breaks off, and no current flows through in the then auxiliary winding, does not form additional magnetic potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101154383A CN101567595B (en) | 2009-05-27 | 2009-05-27 | Composite voltage regulating three-phase permanent magnet electricity generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101154383A CN101567595B (en) | 2009-05-27 | 2009-05-27 | Composite voltage regulating three-phase permanent magnet electricity generator |
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| Publication Number | Publication Date |
|---|---|
| CN101567595A CN101567595A (en) | 2009-10-28 |
| CN101567595B true CN101567595B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101154383A Active CN101567595B (en) | 2009-05-27 | 2009-05-27 | Composite voltage regulating three-phase permanent magnet electricity generator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001365A (en) * | 2011-09-13 | 2013-03-27 | 华域汽车电动系统有限公司 | Double-layer fractional-slot winding structure of permanent-magnet synchronous motor |
| CN104617699A (en) * | 2014-12-23 | 2015-05-13 | 南昌康富电机技术有限公司 | 200 kW lightweight generator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5212435A (en) * | 1992-05-22 | 1993-05-18 | Morrill Motors Inc. | Variable speed asynchronous induction motor |
| CN1464624A (en) * | 2002-06-20 | 2003-12-31 | 夏东 | Permanent-magnet synchronous generator having composite armature winding |
-
2009
- 2009-05-27 CN CN2009101154383A patent/CN101567595B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5212435A (en) * | 1992-05-22 | 1993-05-18 | Morrill Motors Inc. | Variable speed asynchronous induction motor |
| CN1464624A (en) * | 2002-06-20 | 2003-12-31 | 夏东 | Permanent-magnet synchronous generator having composite armature winding |
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|---|---|
| CN101567595A (en) | 2009-10-28 |
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