CN201536340U - Multiphase excitation device of self-excited generator - Google Patents
Multiphase excitation device of self-excited generator Download PDFInfo
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- CN201536340U CN201536340U CN2009202199137U CN200920219913U CN201536340U CN 201536340 U CN201536340 U CN 201536340U CN 2009202199137 U CN2009202199137 U CN 2009202199137U CN 200920219913 U CN200920219913 U CN 200920219913U CN 201536340 U CN201536340 U CN 201536340U
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Abstract
A multiphase excitation device of a self-excited generator is characterized in that a main winding of a generator is designed into a concentric type single-double-layered winding with low harmonic magnetic potential, a fundamental harmonic winding has high coefficient, the fifth and seventh harmonics are greatly weakened or eliminated, so the generating efficiency is high, and the voltage sinusoidal performance is good. The self-excited multiphase excitation device overcomes the problem that an excitation source is obtained from a generator end or the power supply of an auxiliary harmonic winding has the interference phenomenon, and is the self-excited device without influencing the output power supply.
Description
Technical field
The utility model relates to a kind of self-exciter excitation unit, particularly a kind of self-excitation generator multiphase excitation device.
Background technology
Self-exciter excitation unit in the past, its excitation source draw the output of spontaneous motor or take from the auxiliary winding of the additional first-harmonic of generator.Such excitation source is when regulating exciting current with electronic voltage controller, and the power supply of generator output often is interfered.Output voltage waveforms can produce burr, depression, fracture etc. and make the wave distortion phenomenon, when serious electronic load can't be worked.For this reason, seek a kind of excitation source of glitch-free self-exciter, just can change above-mentioned defective.
The utility model content
The purpose of this utility model provides a kind of self-excitation generator multiphase excitation device, can not form interference phenomenon between the out-put supply of this device excitation source and generator.Can charged subclass nonlinear load, be used for post and telecommunications, communication, UPS, Switching Power Supply, radar etc., functional.
The utility model is achieved like this, in three-phase synchronous generator, the generator main design of Windings becomes three symmetrical single, double layer winding.And in the single layer winding groove, arrange multi-phase excitation source winding, opposite with multi-phase excitation source size of current equal direction in the groove, main winding is not constituted electromagnetic interference, multi-phase excitation source winding is supplied with the excitation winding direct current by rectifier bridge output DC potential source, galvanic size is by sealing in wherein voltage regulator control, stable generator output voltage.This layout can be so that armature winding coefficient height, so the generating efficiency height.And 5,7 subharmonic content are little, and when the generator star connection was exported, the sinusoidal aberration rate of voltage waveform was less than 3%, and had two kinds to wait the circle windings in the individual layer groove under, formed 2n (n=1,2,3) phase, promptly 2,4,6 ... equal heterogeneous and rectification excitation unit.This excitation source winding alternating current forms instantaneous back-emf in the output winding, equal and opposite in direction and phase place is opposite, so itself and be zero, so do not produce interference, thereby reach the purpose of invention.
The utility model has the advantages that: can not form interference phenomenon between the out-put supply of excitation source and generator, can charged subclass nonlinear load, be used for post and telecommunications, communication, radar etc., functional.
Description of drawings
The stator winding that Fig. 1 encourages oneself and generates electricity for the utility model is a kind of;
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, expanded view number of stator slots Z=24, the number of poles 2P=2 utmost point, number of phases m=3 phase.Wherein, U, V, W, N are three-phase four-wire system output armature winding, are a kind of concentric type list two layer winding, coil spread 1～12 is an individual layer, and coil spread 2～11 is double-deck, and the individual layer number of turn is 1.73 times of the double-deck number of turn, make fundamental wave winding coefficient reach 0.92, and 5,7 subharmonic are zero substantially.Form low harmonic magnetic potential winding like this.Star output has good sinusoidal voltage waveform.Wherein 24,1,4,5,8,9,12,13,16,17,20,21 etc. totally 12 grooves are single layer winding, all the other 12 grooves are two layer winding.AO and A 10 two-phase symmetric windings are arranged under in 24,1,12,13 4 grooves, and as the two-phase excitation winding, Fig. 1 UNu one that only draws arranges all the other two-phase VN mutually
V1, WN forms three-phase symmetric winding with UNu, is used for 40 kilowatts of self-excitation type brushless generators, the generating efficiency height.Open that to encourage performance good, starting asynchronous function power is strong, and output voltage waveforms is smooth, noiseless phenomenon.Band nonlinear load and inductive load voltage stability height, the ability of encouraging by force is big.Prove correctness of the present utility model.
As shown in Figure 2, AO A 1 0l is the two-phase symmetric winding, mutual deviation 180 0 electrical degrees.Z is eight diodes, is connected into rectifier bridge, and E1E2E3E4 is with the DC excitation winding of minister number with wire gauge.AVR is a voltage regulator, and R is the AVR shunt resistance.U, V, W are the voltage measurement signal incoming ends.AO, A
1O
1The alternating current equal and opposite in direction that flows through in the winding, direction is opposite, and to the induction back-emf of output winding U, V, W, addition at any time is all zero.So noiseless phenomenon reaches the utility model purpose.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (1)
1. self-excitation generator multiphase excitation device, it is characterized in that, the generator main design of Windings becomes three symmetrical single, double layer winding, in the single layer winding groove, arrange multi-phase excitation source winding, opposite with multi-phase excitation source size of current equal direction in the groove, main winding is not constituted electromagnetic interference, polyphase windings is supplied with the excitation winding direct current by rectifier bridge output DC potential source, and galvanic size is by the voltage regulator control that seals in wherein, stable generator output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202199137U CN201536340U (en) | 2009-10-22 | 2009-10-22 | Multiphase excitation device of self-excited generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202199137U CN201536340U (en) | 2009-10-22 | 2009-10-22 | Multiphase excitation device of self-excited generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536340U true CN201536340U (en) | 2010-07-28 |
Family
ID=42536114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202199137U Expired - Fee Related CN201536340U (en) | 2009-10-22 | 2009-10-22 | Multiphase excitation device of self-excited generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536340U (en) |
-
2009
- 2009-10-22 CN CN2009202199137U patent/CN201536340U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |