CN209462235U - A kind of all-in-one machine of integrated threephase alternator, transformer - Google Patents

Abstract

The utility model discloses a kind of integrated threephase alternators, the all-in-one machine of transformer, the all-in-one machine includes: at least threephase stator iron core and threephase stator winding, generator amature and its magnetic pole, and the air gap between stator core, rotor, 3 core limbs are divide into upper part and lower part on sustained height, there is consistent air gap among two parts, for across a generator amature；Generator amature under three air gaps in three-phase main magnetic circuit, is correspondingly arranged on NS field structure, 120 ° of electrical angles of NS field axis mutual deviation in three gap positions；Under prime mover driven, generator amature rotation, by electromagnetic induction, the three-phase alternating current that voltage levels are generated in threephase stator winding realizes the remote transmission of electric energy by ultra-high-tension power transmission line.The utility model saves transformer low voltage winding, and three-phase alternating current is directly issued in high-voltage winding with synchronous generator mode, saves investment and O&M expense, reduces failure rate and loss.

Description

A kind of all-in-one machine of integrated threephase alternator, transformer

Technical field

The utility model relates to electrical generator fields more particularly to the one of a kind of integrated threephase alternator, transformer Machine.

Background technique

Currently, the high-power generator of electric system is mainly synchronous generator, single-machine capacity is very big, and principle is conducting wire Cutting magnetic line.Due to relatively low for the voltage relatively high pressure transmission line of electricity of generator, generator generally also needs to match The step-up transformer of set.

There are following technological deficiencies for above-mentioned this mainstream forms of electricity generation:

1) because being limited by generator unit stator distribution winding insulation structure, the sending-end voltage of generator is generally several Ten kilovolts.Voltage class is low, electric current is big, conductor cross-section is big, loss is big, calorific value is big and heat dissipation becomes main problem.

2) stator winding of conventional electric generators can generate the loss late of certain harmonic wave and induced potential.

3) because the voltage class of generator transmitting terminal is low, long-distance sand transport electric energy cannot be directly carried out, can only be passed through again Step-up transformer with capacitance grade boosts to super-pressure grade and enters power transmission network.Generator+step-up transformer " transformer unit Close " become substantially stationary mode, but the two is added together that cost is high, maintenance is big, it is more to occupy resource；And multiple turn of the energy It changes, transition loss is big, waste of energy and fund.

Utility model content

The utility model provides the all-in-one machine of a kind of integrated threephase alternator, transformer, and the utility model passes through The low pressure winding for saving transformer saves investment and O&M expense, saves resource, while reducing failure rate and loss, realizes Super-pressure is high-power, described below:

The all-in-one machine of a kind of integrated threephase alternator, transformer, the all-in-one machine includes: at least one three-phase three-column Air gap between formula stator core and threephase stator winding, generator amature and its magnetic pole and stator core, rotor,

3 core limbs are divide into upper part and lower part on sustained height, there is consistent air gap among two parts, for across A piece generator amature；

Generator amature under three air gaps in three-phase main magnetic circuit, is correspondingly arranged on NS field structure, and locate In 120 ° of electrical angles of NS field axis mutual deviation of three gap positions；

Under prime mover driven, generator amature rotation by electromagnetic induction, generates high voltage in threephase stator winding The three-phase alternating current of grade realizes the remote transmission of electric energy by ultra-high-tension power transmission line.

Further, the magnetic field of the generator amature is to be distributed along air gap by sinusoidal waveform.

When specific implementation, the quantity of the threephase stator winding is at least 3 single-phase windings.

When specific implementation, top half or the lower half portion of core limb is arranged in the threephase stator winding, can also more than Lower part is all installed by winding.

Preferably, the threephase stator winding is wrapped on 3 core limbs.

The beneficial effect of technical solution provided by the utility model is:

1, the utility model directly relies on rotor field to rotate, through electromagnetic induction, on the stator winding of stator core AC energy, can be delivered directly on high-tension line by the alternating current for generating voltage levels, eliminate the low pressure of transformer around Group retains high-voltage winding；

2, the utility model uses threephase alternator, the structure with transformer one, and consumed electromagnetic material is total Amount is less than the summation of " transformer unit conjunction ", reduces the overall cost of generator；

3, the utility model reduces electric energy conversion bring loss, operation expense is reduced, simultaneously because saving Low pressure winding in transformer, then reduce the occupied space and area of entire product, simplify the device layout in power plant, With better economy.

Detailed description of the invention

Fig. 1 be a kind of integrated threephase alternator, transformer all-in-one machine the schematic diagram of the section structure；

Fig. 2 be a kind of integrated threephase alternator, transformer all-in-one machine side view；

Fig. 3 is the structural schematic diagram of generator amature and 3 NS magnetic poles；

Fig. 4 is the top view of 3 NS magnetic poles.

In attached drawing, parts list represented by the reference numerals are as follows:

1: stator core；2: threephase stator winding；

3: generator amature；1a: the stator core upper half；

1b: stator core lower half.

Specific embodiment

To keep the purpose of this utility model, technical solution and advantage clearer, below to the utility model embodiment It is described in further detail.

Embodiment 1

The utility model embodiment provides the all-in-one machine of a kind of integrated threephase alternator, transformer, referring to Fig. 1 and The design principle of Fig. 2, the all-in-one machine are as follows:

Referring to Fig. 1, the integrated threephase alternator of the utility model embodiment design, the all-in-one machine of transformer are only relied on Prime mover drawing generator rotor 3 rotates, and three groups of magnetic fields on generator amature 3 rotate with, by electromagnetic induction, in stator The three-phase alternating current that voltage levels are generated in the threephase stator winding 2 (i.e. centralized winding) of iron core 1, then by high voltage etc. The alternating current of grade by being transported on corresponding high-tension line at a distance.The all-in-one machine of the utility model embodiment design saves Fall the low pressure winding of transformer, retains high-voltage winding, so that induction of the high-voltage winding by the rotating excitation field of generator amature 3 Directly export high voltage electric energy.

The stator core 1 in the all-in-one machine is three-phase three-limb transformer core referring to fig. 2, and three core limbs 1 are same Be divide into upper part and lower part in one height (respectively 1a and 1b), the centre of two parts 1a and 1b have consistent air gap (this field Professional technicality, the utility model embodiment do not repeat them here this), for across a generator amature 3.I.e. generator turns Son 3 is successively passed through from the air gap of three core limbs 1, and the part of the generator amature 3 under each air gap is correspondingly arranged on NS Field structure, and 120 ° of electrical angles of NS field axis mutual deviation of three gap positions are in, referring to Fig. 3 and Fig. 4.

The lead-out wire of threephase stator winding 2 in all-in-one machine can connect into star or triangle, to send out three Symmetrical AC energy.

Wherein, the utility model embodiment to the coil number in threephase stator winding 2 with no restrictions, the number of turns is more, exchange The voltage of electricity is higher, and specific the number of turns, which can be designed and be run according to the route in practical application, to be needed to be adjusted.

In conclusion the utility model embodiment devises the all-in-one machine of a kind of integrated threephase alternator, transformer New structure, electromagnetic material total amount consumed by the all-in-one machine is less than generator+step-up transformer " transformer unit conjunction ", thus Construction cost and resource are saved, simultaneously because saving part of devices, reduces the failure rate and loss of generator, is realized High-power.

Embodiment 2

The scheme in embodiment 1 is further introduced below with reference to Fig. 1, described below:

Referring to Fig. 1, a kind of integrated threephase alternator, transformer all-in-one machine include: at least three stator core 1, Threephase stator winding 2 and 1 generator amature 3,

Several threephase stator windings (i.e. coil) 2, threephase stator can be set with along any position of stator core 1 It can according to need serial or parallel connection between winding 2, and draw two ends.The quantity of stator core 1 is at least three, air gap Quantity can according in practical application need to be designed to it is multiple.Stator core 1 is constituted with generator amature 3 and air gap Complete three-phase main magnetic circuit.

When specific implementation, the rotor in each air gap is not required to be correspondingly arranged on the pole NS, such as: three-phase five-limb transformation Device structure, comprising: with 5 core limbs stator core 1, its two sides stator core column (referred to as return yoke) although air gap NS magnetic pole is not set across generator amature 3, but at its corresponding air gap.

When practical application, only it need to guarantee that the generator amature 3 on same axis sequentially passes through each air gap of each core limb 1, benefit The induction of the threephase stator winding 2 in stator core 1 is set to generate three intersections with the rotation of at least 3 groups NS magnetic poles on generator amature 3 Galvanic electricity energy.

The quantity and installation site of threephase stator winding 2 in each stator core 1 according to the needs in practical application into Row setting, quantity can be one, is also possible to multiple；The installation site of threephase stator winding 2 can be only in the side of air gap (being only located at the top or lower part of air gap), can also be wound on each position in stator core 1 threephase stator around Group 2.Therefore, the circuit connecting form of needs can be constituted according to the situation in practical application.

Said stator iron core 1 is the magnetic circuit with closure, the utility model embodiment to the shape of stator core 1 not It is limited, is only illustrated by taking the shape in Fig. 1 as an example, preferably facilitate the shape of installation threephase stator winding 2 and stator core 1 material and lamination will be conducive to magnetic conduction.

In the circular closed magnetic circuit space of stator core 1, such as: hair is provided in the border circular areas space in Fig. 1 Rotor 3 is constant magnetic field on generator amature 3, can be provided by permanent-magnet material, is also possible to the direct current convenient for adjusting Excitation field.

Preferably, the magnetic field of generator amature 3 can be designed to be distributed along air gap by sinusoidal waveform, when generator amature 3 Only a pair of of magnetic pole when, NS magnetic pole respectively accounts for half circular arc and is sinusoidally distributed；When two pairs of magnetic poles, NS magnetic pole is respectively accounted for A quarter, alternating polarity distribution, and so on, the utility model embodiment does not repeat them here this.

When practical application, generator amature 3 is operated by prime mover dragging, and the shape of generator amature 3 can be convex Pole formula, is also possible to hidden pole type, can be the electromagnet pole of DC excitation.

The utility model embodiment with no restrictions, can use any prior art, can also adopt to the structure of excitation With new technologies such as rotation transducers.After meeting installation and operation condition, void dimension is the smaller the better, the utility model embodiment pair This is with no restrictions.

Embodiment 3

Referring to Fig. 1 to Fig. 4, the voltage class in the utility model embodiment be can according to need to threephase stator winding 2 The number of turns be designed, can be high or low.The number of turns can also design multiple taps and tap switch, convenient for being run according to practical application It needs that coil turn is adjusted, realizes pressure regulation.

When specific implementation, the outstanding innovative and unique of the technical program cannot be influenced with the variation of complementary structure Property.Complementary structure can be with are as follows: insulation system, core-lamination stack shape, radiating mode, winding connection for specifically using etc. are no It is limited to existing a variety of materials and technology, including amorphous alloy, nanometer and permanent magnet, superconductor technology application etc..

When practical application, generator runing adjustment technology has the dual characteristics of generator and transformer, it may have novel Generator own characteristic；Generator has the necessary auxiliary devices such as heat dissipation, insulation, fastening folder, shell.

To the model of each device in addition to doing specified otherwise, the model of other devices does not limit the utility model embodiment System, as long as the device of above-mentioned function can be completed.

It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model is real It is for illustration only to apply a serial number, does not represent the advantages or disadvantages of the embodiments.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (5)

1. the all-in-one machine of a kind of integrated threephase alternator, transformer, which is characterized in that the all-in-one machine includes: at least one Gas between three-phase three-limb stator core and threephase stator winding, generator amature and its magnetic pole and stator core, rotor Gap,

3 core limbs are divide into upper part and lower part on sustained height, there is consistent air gap among two parts, for across one Generator amature；

Generator amature under three air gaps in three-phase main magnetic circuit is correspondingly arranged on NS field structure, and is in three 120 ° of electrical angles of NS field axis mutual deviation of a gap position.

2. the all-in-one machine of a kind of integrated threephase alternator according to claim 1, transformer, which is characterized in that institute The magnetic field for stating generator amature is to be distributed along air gap by sinusoidal waveform.

3. the all-in-one machine of a kind of integrated threephase alternator according to claim 1, transformer, which is characterized in that institute The quantity for stating threephase stator winding is at least 3 single-phase windings.

4. the all-in-one machine of a kind of integrated threephase alternator according to claim 1, transformer, which is characterized in that institute State that the top half of core limb is arranged in threephase stator winding or winding is all installed in lower half portion or top and the bottom.

5. the all-in-one machine of a kind of integrated threephase alternator according to claim 1, transformer, which is characterized in that institute Threephase stator winding is stated to be wrapped on entire core limb.