CN1305208C - Brushless three-phase synchronous generator with multiwave mixed exitation and internal source filtering - Google Patents

Brushless three-phase synchronous generator with multiwave mixed exitation and internal source filtering Download PDF

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Publication number
CN1305208C
CN1305208C CNB021156190A CN02115619A CN1305208C CN 1305208 C CN1305208 C CN 1305208C CN B021156190 A CNB021156190 A CN B021156190A CN 02115619 A CN02115619 A CN 02115619A CN 1305208 C CN1305208 C CN 1305208C
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CN
China
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winding
generator
phase
brushless
multiwave
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CNB021156190A
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Chinese (zh)
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CN1445909A (en
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林政安
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泰豪科技股份有限公司
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Abstract

The present invention relates to a brushless three-phase synchronous generator with multiwave mixed excitation and internal source filtering, which is characterized in that a generator is coaxial with an alternating-current exciter. A stator of a generator is composed of two kinds of three-phase symmetrical windings, wherein a kind of winding is a main winding and is a single layer sine winding in the same turn type and a double-layer sine winding in the same turn type; the other kind of winding is an auxiliary winding which is a mutiwave winding and is also in a same turn structure. The main winding is connected in series with the auxiliary winding; a node is provided with three-phase taps. The auxiliary winding performs the function of the mutiwave composite excitation and also performs the function of active filtering; the filtering function is the functions of spatial filtering and time filtering. When a generator rotor is in a non-salient pole structure, the excitation winding is a multipole combined type. The generator is provided with an automatic voltage regulator. The generator externally output three-phase symmetric sine wave voltage in a finished type; the total harmonic content of the voltage is less than 1%; the present invention has self excitation start, self voltage regulation, no oscillation in running and high running stabilization and is suitable for modern all kinds of electric load.

Description

Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator

Technical field

The present invention relates to a kind of brushless three-phase synchronous generator, especially a kind of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator.

Background technology

As everyone knows, the brushless three-phase synchronous generator of band AC exciter, known mainly contains three kinds, and a kind of is the band pilot exciter, and pilot exciter has magneto and inductor type.This motor is made up of three motor coaxles, and high-quality brushless three-phase generator belongs to this kind more.Its shortcoming is big, the axial length of volume, the excitation energy is restricted or waste; A kind of is AC exciter, and field power supply is supplied with by the main frame fundamental voltage, its bad dynamic performance, be subject to disturb, power controlling is big, voltage quality is not high; A kind of is that the AC exciter power supply is to be supplied with by main frame triple-frequency harmonics winding, its dynamic property is good, electric best in quality, but under low power factor load, nonlinear load, rectification load, frequent starting load condition, reforming phenomena may appear easily, voltage-form distortion rate can reach about 2%, improving, it is very big with interior difficulty to improve total harmonic distortion to 1%, is necessary to break through above-mentioned difficult point, and its electric quality is further improved.Can make the adaptive load ability wider.The problem of above-mentioned existence is extremely to be solved, so that satisfy every strict demand of modern electrical load.

Summary of the invention

The object of the present invention is to provide a kind of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator, all kinds of brushless three-phase synchronous generators that make its aggregate level be better than appearing on the market at present, and make the voltage waveform total harmonic distortion in 1%, satisfying the high-quality user's of modern loads requirement, and manufacture difficulty can decrease.

Technical scheme of the present invention is: contain two groups of three-phase symmetric windings in the stator winding of this Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator, one group is that main winding is single, double layer three a symmetrical positive chorded winding, is to wait circle not equidistant; One group is that auxiliary winding is three symmetrical to wait circle not equidistant, and effect is as many ripples composite excitation source winding, is again endogenous Filter Winding simultaneously; The turn ratio that these two groups of windings are each coil of main winding and auxiliary winding is 2: 1.Two groups of windings are that main winding is connected with auxiliary winding method of attachment in the stator winding of generator, continuous some tap output of two kinds of windings connects three phase half wave rectification bridge, rectification after voltage regulator (AVR) control exciter excitation electric current, and then the voltage accuracy during the various operating mode of stable generator.Rotor is made hidden pole type, and the magnetic field winding is multipole compound winding, and this compound winding is that windings in series or the parallel connection by two kinds of different numbers of poles constitutes.

The invention has the advantages that: many ripples excitation can be utilized multiple harmonic energy intrinsic in the motor fully, so can reduce additive decrementation, raises the efficiency, and reduces volume, weight, saving metal material and energy.Many ripples excitation combines the advantage of multiple harmonic excitation, first-harmonic excitation, permanent excitation, has overcome deficiency separately, and the motor electric property is further improved.The voltage landing is littler when starting asynchronous machine, ability is bigger.Endogenous filtering further promotes the positive chorded winding technology of three-phase two-layer equation, not only make voltage sine level improve one grade, bring up to the voltage total harmonic distortion less than 1% level by line voltage sinusoidal waveform aberration rate about 2%, and Electro Magnetic Compatibility improves greatly also.The multipole resultant field winding of rotor non-salient pole has improved the dynamic stability ability of generator greatly.

Description of drawings

Fig. 1 is a Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator work electric system schematic diagram of the present invention;

Fig. 2 is a Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator stator main winding A phase schematic diagram of the present invention;

Fig. 3 is the auxiliary winding a phase schematic diagram of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator stator of the present invention;

Embodiment

Fig. 2 is that the groove number is that the intermediate frequency of 36 grooves, 14 utmost points, 3 phases is the stator main winding of the Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator of 400HZ, A has 4 circles by pitch 1-3 as we know from the figure, pitch 1-4 by 6 circles totally 10 circle windings form.And B is mutually and also as shown in fig. 1 position of C layout mutually, structure and category-A seemingly, three phase windings that formation A, B, C three symmetrical mutual deviations 120 are spent electrical degrees.This three phase windings form the structure of single, double layer winding.The brushless AC generator line voltage-form distortion rate level of this structure winding is about 2%.For generator voltage waveform total harmonic distortion is controlled in 1%, be provided with one and overlap three symmetrical auxiliary windings, a phase active power filtering winding is by pitch 1-3 2 circles to be arranged as can be known from Fig. 3, pitch 1-9 by 2 circles totally 4 circle windings form, and relatively-stationary position is arranged with Fig. 1.Fig. 2 a phase winding structure of only having drawn, and marked the lead-out wire of b, c phase, b, c structure are and a mutual deviation 120 degree electrical degrees mutually that a, b, c are a kind of three symmetrical Filter Winding.The turn ratio of main winding and the every circle of auxiliary winding is 2: 1, therefore, is the approximately equalised winding of a kind of groove filling rate in the stator slot of this kind generator, divides bilayer or three-decker in the groove.

Generator has coaxial AC exciter.E 1, E 2Be the exciter stator winding, a ', b ', c ' are exciter rotor armature winding.Generator unit stator main winding A, B, C connect with auxiliary winding a, b, c, and the connection place tap meets rectifier Z 1, Z 2, Z 3And voltage regulator (AVR), externally output token U, V, W, N.Main rotor has salient pole type and hidden pole type, and salient pole rotor magnetic field winding is F 1F 2It is a kind of winding of pattern; Distributed polar rotor magnetic field winding F 1F 2Be by F 1F 3And F 3F 2The multipole combined winding of two kinds of different numbers of poles, F 1F 2Piezo-resistance R in parallel, rotor is provided with absolute damping DL, F 1F 2, a ', b ', c ' are by rotating rectifier Z zConnect into operating circuit, the compound winding of multipolar system makes the dynamic stability ability of generator stronger.Reaction speed is faster.

A, b, c both had filter action to A, B, C, offered E again 1, E 2Many ripples excitation.Because the energy that a, b, c get makes multiple harmonic energy intrinsic in the motor internal magnetic field basically, basically do not consume extra power, major part is to utilize these inner unnecessary harmful energy, so both saved the required additional outer energy of other excitation mode, also very big again to the electric quality of motor raising is changed evil and is benefit.

The principle of filter action is a, b, that the c Filter Winding is sent is one group and main winding A, B, equal and opposite in direction among the C, the multiple harmonic that direction is opposite, thereby this group harmonic wave is all eliminated or effectively weakening, the voltage waveform that motor is exported reaches the sinusoidal waveform of perfect type, total harmonic distortion is less than 1%, for example the average every circle of the triple-frequency harmonics amount that contains in Fig. 1 winding is 0.1366 * 2,10 circles contain 0.1366 * 2 * 10, and the every circle of triple-frequency harmonics amount in accompanying drawing 2 windings is-0.6830,4 circles are for-0.6830 * 4, then the mutually total triple-frequency harmonics content of generator U is+0.1366 * 2 * 10-0.6830 * 4=0, so triple-frequency harmonics content has been eliminated in motor output, played desirable active power filtering effect, other subharmonic also has similar effect, so improved voltage quality greatly, reached and make the voltage total harmonic distortion less than 1% level.

Many ripples excitation action principle is, Filter Winding a, b, c are a kind of many wave windings, except A, B, C main winding are had the good filter action, still are a kind of good many ripples excitation source, mainly contain triple-frequency harmonics in many wave windings, so very strong dynamic compound excitation ability is arranged.It also contains certain first-harmonic simultaneously, so generator is fine from excitation, in addition, it also contains more rich other subharmonic, and these subharmonic have good dynamic property, to the free filter action in magnetic field, have reduced the time harmonic content among A, B, the C.Improved the big nonlinear load of generator belt so greatly, big asymmetric load, big rectification load, band ups power, belt switch power supply, the ability and the performance of band mainframe computer etc.Therefore, under all kinds of electrical loads of modern times, this generator all can be stable, nonoscillatory, and Electro Magnetic Compatibility is very strong.

Generator main winding A, each wire tag that goes out in accompanying drawing 1 and accompanying drawing 2 of B, C are respectively AX, BY, CZ.The go out wire tag of the auxiliary winding of generator in accompanying drawing 1 and accompanying drawing 3 is respectively ax, by, cz.

Claims (3)

1, a kind of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator, it is characterized in that: contain two groups of three-phase symmetric windings in the stator winding of this generator, one group is main winding, and feature is single, double layer three a symmetrical positive chorded winding, is to wait circle not equidistant; One group is auxiliary winding, and its feature also is three symmetrical to wait circle not equidistant, and effect is as many ripples composite excitation source winding, is again endogenous Filter Winding simultaneously, and each turns ratio of main winding and auxiliary winding is 2: 1.
2, a kind of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generator as claimed in claim 1, it is characterized in that main winding and auxiliary winding method of attachment in the stator winding of generator connect, continuous tap output of these two kinds of windings connects the three phase half wave rectification bridge, rectification is after voltage regulator (AVR) control exciter excitation electric current, and then the voltage accuracy during the various operating mode of stable generator.
3, as claims 1 or 2 described a kind of Multiwave Mixed Excitation source Filter Brushless Three-phase Synchronous Generators, it is characterized in that rotor makes hidden pole type, the magnetic field winding is multipole compound winding, and this compound winding is made of the windings in series or the parallel connection of two kinds of different numbers of poles.
CNB021156190A 2002-03-20 2002-03-20 Brushless three-phase synchronous generator with multiwave mixed exitation and internal source filtering CN1305208C (en)

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CN1445909A CN1445909A (en) 2003-10-01
CN1305208C true CN1305208C (en) 2007-03-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102810920A (en) * 2012-07-17 2012-12-05 福建一华电机有限公司 Brushless generator without automatic voltage regulator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100464481C (en) * 2006-12-04 2009-02-25 泰豪科技股份有限公司 High-power double-drive dual-feed brushless wind generator
CN102195427B (en) * 2010-03-11 2013-02-06 南京航空航天大学 Two-stage hybrid excitation brushless synchronous motor
CN101944812B (en) * 2010-09-30 2012-03-14 泰豪科技股份有限公司 Duplex winding structure with fractional slots of servo permanent magnet synchronous motor
CN103887912B (en) * 2014-03-21 2016-12-07 沈阳揽月工业设计有限公司 A kind of motor with additional inductor
CN109510446B (en) * 2018-11-10 2020-08-14 天津大学 Inductance energy storage type active filter based on motor winding leakage inductance and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU978273A2 (en) * 1981-04-03 1982-11-30 Горьковский Ордена Трудового Красного Знамени Политехнический Институт Им.А.А.Жданова Versions of combinated three-phase/one-phase winding of electric machines
SU1127044A1 (en) * 1982-07-30 1984-11-30 Горьковский Ордена Трудового Красного Знамени Политехнический Институт Им.А.А.Жданова Combined one-two layer winding for electric machine
CN2532615Y (en) * 2002-03-20 2003-01-22 清华泰豪科技股份有限公司 Multi-wave mixing-exciting inner-source filter brushless three-phase synchronous generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU978273A2 (en) * 1981-04-03 1982-11-30 Горьковский Ордена Трудового Красного Знамени Политехнический Институт Им.А.А.Жданова Versions of combinated three-phase/one-phase winding of electric machines
SU1127044A1 (en) * 1982-07-30 1984-11-30 Горьковский Ордена Трудового Красного Знамени Политехнический Институт Им.А.А.Жданова Combined one-two layer winding for electric machine
CN2532615Y (en) * 2002-03-20 2003-01-22 清华泰豪科技股份有限公司 Multi-wave mixing-exciting inner-source filter brushless three-phase synchronous generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102810920A (en) * 2012-07-17 2012-12-05 福建一华电机有限公司 Brushless generator without automatic voltage regulator

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Assignee: Jiangxi Tsinghua Taihao Sanbo Motor Co., Ltd.

Assignor: Taihao Science & Technology Co., Ltd.

Contract fulfillment period: 2008.8.25 to 2015.8.25 contract change

Contract record no.: 2008360000001

Denomination of invention: Brushless three-phase synchronous generator with multiwave mixed exitation and internal source filtering

Granted publication date: 20070314

License type: Exclusive license

Record date: 2008.10.9

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.25 TO 2015.8.25; CHANGE OF CONTRACT

Name of requester: JIANGXI QINGHUA TAIHAO SANBO ELECTRIC MACHINE CO.,

Effective date: 20081009