CN110492643A - It is suitble to the generator motor of seawater hydroenergy storage station - Google Patents
It is suitble to the generator motor of seawater hydroenergy storage station Download PDFInfo
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- CN110492643A CN110492643A CN201910533003.4A CN201910533003A CN110492643A CN 110492643 A CN110492643 A CN 110492643A CN 201910533003 A CN201910533003 A CN 201910533003A CN 110492643 A CN110492643 A CN 110492643A
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- 238000003860 storage Methods 0.000 title claims abstract description 22
- 239000013535 sea water Substances 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 105
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 claims description 13
- 230000006870 function Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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Abstract
The present invention provides a kind of generator motors of suitable seawater hydroenergy storage station, including stator and rotor, it is characterized in that there is two sets of independent windings on the stator of generator motor, respectively stator power winding and stator control winding, electric port of the stator power winding as the direct generation of electricity, stator control winding is as the electric port connecting with current transformer；Rotor couples two kinds of magnetic fields of the stator power winding on stator and stator control winding simultaneously.The purpose of the present invention is to the defects of the prior art, provide a kind of generator motor of suitable seawater hydroenergy storage station.
Description
Technical field
The present invention relates to seawater hydroenergy storage station technical fields, and in particular to a kind of suitable seawater hydroenergy storage station
Generator motor.
Background technique
With being continuously increased for renewable energy, the stability of electric system becomes a major issue.Improve power grid
The equipment of stability, such as variable-ratio pumped storage is due to having the characteristics that rotating speed response is fast and soft readjustment, increasingly
It attracts people's attention.
At present there are two types of more variable-ratio pump-storage generator is paid close attention to, one is configuration full power convertor SFC's
Synchronous generator, another kind are the double-fed units for only needing configuration slip power current transformer but need to being powered on brush and slip ring.So
And said two devices have distinct disadvantage.
It configures in the Synchronous generator principle of full power convertor SFC with traditional Synchronous generator and indistinction,
Merely to can satisfy the purpose of speed-changing constant frequency constant voltage power generation and install the current transformer of total power additional in stator power generation exit.
In this system, the capacity of full power convertor must be consistent with unit, this causes system-wide cost to be doubled and redoubled,
This is its most important disadvantage.
The rotor part of the double-fed variable-ratio unit of the brush and sliding ring type of use manufactures and maintenance is all more difficult.Have
The double feedback electric engine of brush and slip ring can be run under double-fed state, although reducing the capacity of frequency converter, the presence of brush
Prevent motor needs to be regularly maintained, so also increasing cost from running under the relatively severe working environment of condition；
And in manufacturing process, compared to can integrally formed structure, artificial manufacturing cost needed for the rotor structure of Wound-rotor type and
Probability of making a mistake also greatly increases.
Meanwhile the universal head of seawater hydroenergy storage station is lower, and then the revolving speed of the hydraulic turbine is also corresponding relatively slow, this work
Condition is suitble to synchronous rotational speed to turn small generator motor.Multipole logarithm brought by low synchronous rotational speed is required, certainly will will cause
The higher manufacturing cost of Wound-rotor type construction rotor and technique requirement of current double-fed variable-ratio unit.
For seawater hydroenergy storage station, at present there is an urgent need to a kind of high reliability, rotor part are non-maintaining, simultaneously also
Must have revolving speed it is adjustable, it is active/idle can decoupling control, be suitble to low water head generator motor.
Summary of the invention
The purpose of the present invention is to the defects of the prior art, provide a kind of hair of suitable seawater hydroenergy storage station
Electric motor.
The present invention provides a kind of generator motors of suitable seawater hydroenergy storage station, including stator and rotor, special
Sign is there is two sets of independent windings, respectively stator power winding and stator control winding on the stator of generator motor, fixed
Electric port of the sub- power winding as the direct generation of electricity, stator control winding is as the electric port connecting with current transformer；Rotor is same
When coupling stator on stator power winding and stator control winding two kinds of magnetic fields.
In above-mentioned technical proposal, there are two air gap in generator motor, stator power winding and stator control winding all
There is flow of power.
In above-mentioned technical proposal, when generator motor is under the mode of being incorporated into the power networks, stator power winding and stator control around
Mutually generation acts on the air gap fundamental wave rotating excitation field that group generates under the action of rotor, stator power winding and stator control
The induced current frequency that the air gap fundamental wave rotating excitation field that winding processed generates generates respectively in the rotor is equal.
In above-mentioned technical proposal, stator power winding and stator control winding and rotor meet following formula:
Wherein, s1And s2The respectively revolutional slip of stator power winding and stator control winding, ω1And ω2It is respectively fixed
The electrical angular speed of sub- power winding rotating magnetic field and the electrical angular speed of stator control winding rotating excitation field, f1And f2Respectively
The frequency of stator power winding and the exciting current of stator control winding.
In above-mentioned technical proposal, the rotor speed formula of reluctance type generator motor:
Wherein, prIndicate the salient pole number of salient pole type reluctance rotor, ωrFor the angular velocity of rotation of rotor
In above-mentioned technical proposal, the constraint condition of rotor with salient pole number is in reluctance type generator motor,
pr=p1±p2
Wherein, p1For stator power winding number of pole-pairs, p2For stator control winding number of pole-pairs rotor；The constraint of salient pole number
Condition further includes pr>0。
In above-mentioned technical proposal, for the reluctance rotor structure of the facewidth such as not, geometric dimension is pair on air gap circumference
Claim, it is assumed that maximum air gap length and minimal air gap length are respectively dmaxAnd dmin, air-gap permeance wave can indicate are as follows:
Wherein, βiRepresent the facewidth ratio of each tooth, 0≤βi≤1；J represents the tooth number under every salient pole, and the selection of j is essential
Consider that serration will not influence motor main magnetic circuit, serration there are enough mechanical strengths and meets the requirement of motor manufacturing technology, often
Tooth number under salient pole generally can choose 2~5.
Stator power winding of the invention is the electric port of the direct generation of electricity, and stator control winding is connect as with current transformer
Electric port, the design of electricity generation and electromotion machine rotor can using the optimization method of the magnetic-field modulation-type facewidth reluctance rotor such as not
To make it have while double coupling operational abilities in two kinds of magnetic fields of efficient coupling.There are two air gaps in generator motor, fixed
Sub- power winding and control winding have flow of power.Either generating operation mode or pumping operation mode, dynamotor can be
Supersynchronous revolving speed or subsynchronous rotation speed operation.The generator motor that the present invention is introduced not only is able to satisfy seawater water-storage
Power station generates electricity for generator motor speed-changing constant frequency constant voltage, the requirement of multipole logarithm and low synchronous rotational speed, be provided simultaneously with it is active/
The features such as idle decoupling control, high reliability, rotor part are non-maintaining, control system is at low cost.
Detailed description of the invention
Fig. 1 is a kind of system operation schematic diagram of the generator motor of suitable seawater hydroenergy storage station of the present invention；
Fig. 2 is generator motor of the present invention under generating operation mode, the energy flow schematic diagram of supersynchronous speed operating；
Fig. 3 is generator motor of the present invention under generating operation mode, the energy flow schematic diagram of subsynchronous speed operating；
Fig. 4 is generator motor of the present invention under pumping operation mode, the energy flow schematic diagram of supersynchronous speed operating；
Fig. 5 is generator motor of the present invention under generating operation mode, the energy flow schematic diagram of subsynchronous speed operating；
Fig. 6 be two kinds of magnetic field of generator motor of the present invention schematic diagram (power winding number of magnetic pole pairs be 1, control winding magnetic
3) number of pole-pairs is；
Fig. 7 is the schematic diagram of each rotating excitation field in generator motor of the present invention；
Fig. 8 is the plane outspread drawing and analysis model of common salient pole type reluctance rotor；
Fig. 9 is the analysis model of the generator motor of the present invention facewidth reluctance rotor such as not；
Figure 10 is the air gap magnetic density waveform figure of generator motor of the present invention；
Figure 11 is the air gap flux density frequency analysis result of generator motor of the present invention；
Figure 12 is the plan view of the facewidth reluctance rotor such as or not generator motor of the present invention.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this is well understood
Invention, but they limiting the invention.
As shown in Figs. 1-5, the present invention provides the generator motor of suitable seawater hydroenergy storage station, including stator and
Rotor, it is characterised in that have two sets of independent windings, respectively stator power winding and stator control on the stator of generator motor
Winding processed, electric port of the stator power winding as the direct generation of electricity, stator control winding is as the electric end connecting with current transformer
Mouthful；Rotor couples two kinds of magnetic fields of the stator power winding on stator and stator control winding simultaneously.Have two in generator motor
A air gap has flow of power in stator power winding and stator control winding.
Have two sets of independent windings on the stator of this generator motor, they have different numbers of pole-pairs to avoid
It generates and is directly coupled between stator double winding, as shown in Figure 6.In two sets of stator winding, first set winding is directly and power grid
Or electrical equipment connection, its number of pole-pairs are p1；Second set of winding is generally connect with voltage and the adjustable current transformer of frequency, it
Number of pole-pairs be p2.Meanwhile the rotor of generator motor is by special designing, to couple the double winding on stator.
This generator motor is under the mode of being incorporated into the power networks, number of pole-pairs p1Stator winding it is direct as power winding
It is ω by angular frequency1AC power supply, then power winding generate air-gap field revolving speed be ω1/p1；Number of pole-pairs is p2Determine
It is ω that sub- winding, which inputs or export angular frequency as control winding,2Alternating current, then control winding generate air-gap field turn
Speed is ω2/p2.Two sets of stator winding realize energy transmission by the INDIRECT COUPLING of rotor, and rotor is played similar to stator
The effect of converter between different numbers of pole-pairs.Power winding and control winding magnetic field flux density are represented by,
b1(θ, t)=B1cos[ω1t-p1θ] (formula 1)
b2(θ, t)=B2cos[ω2t-p2θ] (formula 2)
Wherein, B1And B2It is the peak value of two kinds of flux densities, θ is the position angle on air gap circumference, ω1And ω2Respectively power
The electrical angular speed of winding rotating magnetic field and the electrical angular speed of control winding rotating excitation field.
Formula 1 and formula 2 are positioned at rotor reference to fasten, the angular velocity of rotation of rotor may be defined as,
ωr=(θ '-θ)/t (formula 3)
Wherein, θ ' is the position angle that rotor reference ties up on air gap circumference.In two kinds of air-gap fields that rotor reference is fastened
Flux density is represented by,
b1' (θ ', t)=B1cos[(ω1-p1ωr)t-p1θ '] (formula 4)
b2' (θ ', t)=B2cos[(ω2-p2ωr)t-p2θ '] (formula 5)
For the air gap base for enabling two sets of stator winding to generate by rotor INDIRECT COUPLING, power winding and control winding
Wave rotating excitation field under the action of rotor mutually generation act on, can just make in this way two sets of no direct-coupled stators around
Group carries out energy transmission by rotor, and the air gap fundamental wave rotating excitation field for just requiring power winding and control winding to generate is in rotor
The middle induced current frequency generated respectively is equal, that is,
|ω1-p1ωr|=| ω2-p2ωr| (formula 6)
According to formula 6, rotor rotating machinery angular speed can be obtained are as follows:
The angular speed of two kinds of rotating excitation fields is represented by,
ω1=2 π f1(formula 8)
ω2=2 π f2(formula 9)
f1And f2The respectively frequency of the exciting current of stator double winding.According to the revolving speed of rotating excitation field, it is known that stator
The revolutional slip s of upper double winding1And s2Respectively,
The electrical angular speed of the rotating excitation field of power winding and control winding is converted under rotor coordinate, available power
The angular velocity omega that winding magnetic field is fastened in rotor reference1rThe angular velocity omega fastened with control winding magnetic field in rotor reference2rRespectively
For,
ωr1=ω1-p1ωr(formula 12)
ωr2=ω2-p2ωr(formula 13)
When taking "+" in formula 7, i.e. ω1-p1ωr=p2ωr-ω2, it obtains,
ωr1=-ωr2(formula 14)
It can be derived from by formula 10, formula 11 and formula 14,
Magnetic field schematic diagram when this generator motor synchronous operation mode is as shown in Figure 7.When stator power winding and control
When system is passed to three-phase symmetric voltage respectively, just there are two fundamental wave magnetic fields to exist simultaneously in this generator motor, this is just needed
Rotor is wanted to go to couple p simultaneously1And p2The two different number of pole-pairs fundamental wave magnetic fields.Meanwhile other harmonic components caused by rotor
Need to control the smaller the better.This is because the harmonic components of other orders can not generate induction in stator double winding
Potential, for the angle that this generator motor is run, the effect that these harmonic components generate is taken as harmonic wave reactance.It is logical
Cross the facewidth reluctance rotor design method such as not be able to satisfy more than demand, will gradually be illustrated below.
According to described above, it is assumed that the frequency of the three-phase symmetrical exciting current of stator double winding is respectively ω1And ω2, then
Two kinds of synthesis magnetomotive force in motor gas-gap can be expressed as,
Wherein, I1And I2It is the amplitude of stator double winding exciting current, n respectively1And n2It is stator double winding respectively
Every extremely every phase the number of turns, θ are the mechanical angles of air gap circumference, and α is that two kinds of magnetomotive initial positions of synthesis are poor.If motor gas
The average length of gap is m, it is assumed that maximum air gap length and minimal air gap length are respectively (m+n) and (m-n), the sky in air gap
Gas unit permeance is μ0, then salient pole type reluctance rotor is represented by the improved magnetic conductance waveform of air gap,
g-1(θ, t)=m+ncos [pr(θ-ωrT)] (formula 18)
Wherein, prIndicate the salient pole number of salient pole type reluctance rotor, ωrFor the angular velocity of rotation of rotor.
Two kinds of synthesis magnetomotive force are modulated by the improved magnetic conductance waveform of field spider, the magnetic formed after modulation
Condensation wave can be expressed as,
B1(θ, t)=μ0g-1(θ)F1(θ) (formula 19)
B2(θ, t)=μ0g-1(θ)F2(θ) (formula 20)
Formula 16 and formula 18 are substituted into formula 19, the p that can will be formed after modulation1The corresponding flux density wave of number of pole-pairs is rewritten as,
Formula 17 and formula 18 are substituted into formula 19, the p that can will be formed after modulation2The corresponding flux density wave of number of pole-pairs is rewritten as,
From formula 21 and formula 22 as can be seen that special magnetic conductance wave can be by the space combination magnetomotive force of script Sine distribution
It is modulated into a kind of air gap flux density of multi-frequency, and modulated flux density wave is not only the function about the time, again with respect to sky
Between position angle function.
For the two kinds of flux density waves obtained after modulation, in order to realize the indirect coupling of two sets of stator winding in generator motor
Spatial function of the cooperation it is necessary to make the function of time and identical frequency with identical frequency of formula 21 and formula 22, that is,
(ω1-prωr) t=± ω2T (formula 23)
(p1-pr) θ=± p2θ (formula 24)
The rotor speed formula for obtaining reluctance type generator motor according to formula 23 is,
The constraint condition for obtaining rotor with salient pole number in reluctance type generator motor according to formula 24 is,
pr=p1±p2(formula 26)
Certainly, the constraint condition of rotor with salient pole number further includes pr>0。
It is the magnetic field modulation principle that this magnetic conductance wave moves wave to magnetic is above common salient pole type reluctance rotor generator motor
Basic principle, and carry out the basis of the facewidth reluctance rotor analysis such as not.In order to more intuitively analyze and calculate
The magnetic conductance wave and this modulated air gap flux density of magnetic conductance wave that the reluctance rotor of the facewidth generates, and then promote electricity generation and electromotion
The performance of machine, this just needs to carry out the expression of function to magnetic resistance and air-gap permeance, and then is counted by factorization
Calculation machine Computer Aided Design.
For etc. the facewidth reluctance rotor structure, geometric dimension is symmetrical on air gap circumference, it is assumed that maximum air gap
Length and minimal air gap length are respectively dmaxAnd dmin, as shown in figure 8, air-gap permeance wave can be expressed as,
Wherein, β represents facewidth ratio, 0≤β≤1；Pr is rotor magnetic pole number,.
Similarly, the magnetic conductance expression formula when facewidth situation such as not can be derived according to formula 23.For the magnetic resistance of the facewidth such as not
Rotor structure, geometric dimension are symmetrical on air gap circumference, it is assumed that maximum air gap length and minimal air gap length are respectively
dmaxAnd dmin, as shown in figure 9, air-gap permeance wave can be expressed as,
Wherein, βiRepresent the facewidth ratio of each tooth, 0≤βi≤1；J represents the tooth number under every salient pole, certainly, the selection of j
Essential consideration serration will not influence motor main magnetic circuit, serration has enough mechanical strengths and meet wanting for motor manufacturing technology
It asks, therefore the tooth number under every salient pole generally can choose 2~5.
Assuming that the power winding number of pole-pairs and control winding number of pole-pairs of this generator motor are p1=2 and p2=4, according to
Formula 26 takes positive sign, namely takes the effect of two kinds of magnetic field superpositions, it is known that the salient pole number p of reluctance rotorr=6.Figure 10 gives one
The floor map of facewidth reluctance rotor such as kind not；Wherein, the facewidth ratio of common salient pole is 0.5, and not etc. facewidth magnetic resistance is not every
A salient pole has been divided into symmetrical three sections, and the facewidth is than being respectively 0.9 and 0.3.
If the ratio of the three-phase symmetrical exciting current amplitude of stator double winding is k, and double winding volume the number of turns phase
Together, i.e. n1=n2=n, the initial phase angle difference of exciting current are α, then two in motor gas-gap kind synthesis magnetomotive force can be with table
It is shown as,
The function of motor gas-gap flux density is represented by,
According to formula 26 it is found that air gap flux density is the function about θ, which dictates that the geometry of the magnetic resistance along air gap circumference
Size will affect the harmonic content of air gap flux density.Work as k=0.5, when the π/3 of α=2, Figure 11 and Figure 12 are set forth by differing
The waveform of the modulated air gap flux density of facewidth magnetic resistance and the magnetic field harmonics of air gap flux density analyze result.It can be found that by not
Etc. the facewidth magnetic resistance modulation after, p in air gap flux density1=2 and p2The operating fields flux density content of=4 numbers of pole-pairs accounts for main component,
And the harmonic content of other orders is all smaller, has reached through the facewidth such as or not has weakened the design effect of flux density harmonic content.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (7)
1. a kind of generator motor of suitable seawater hydroenergy storage station, including stator and rotor, it is characterised in that electricity generation and electromotion
There are two sets of independent windings, respectively stator power winding and stator control winding, stator power winding conduct on the stator of machine
The electric port of the direct generation of electricity, stator control winding is as the electric port connecting with current transformer；Rotor couples simultaneously to be determined on stator
Two kinds of magnetic fields of sub- power winding and stator control winding.
2. the generator motor of seawater hydroenergy storage station according to claim 1, it is characterised in that in generator motor
There are two air gaps, have flow of power in stator power winding and stator control winding.
3. the generator motor of seawater hydroenergy storage station according to claim 2, it is characterised in that work as generator motor
Under the mode of being incorporated into the power networks, the air gap fundamental wave rotating excitation field of stator power winding and the generation of stator control winding is in rotor
The air gap fundamental wave rotating excitation field that mutual generation effect under effect, stator power winding and stator control winding generate is divided in the rotor
The induced current frequency not generated is equal.
4. the generator motor of seawater hydroenergy storage station according to claim 3, it is characterised in that stator power winding
Meet following formula with stator control winding and rotor:
Wherein, s1And s2The respectively revolutional slip of stator power winding and stator control winding, ω1And ω2Respectively stator power
The electrical angular speed of winding rotating magnetic field and the electrical angular speed of stator control winding rotating excitation field, f1And f2Respectively stator function
The frequency of rate winding and the exciting current of stator control winding.
5. the generator motor of seawater hydroenergy storage station according to claim 4, it is characterised in that generator motor
Rotor speed formula:
Wherein, prIndicate the salient pole number of salient pole type reluctance rotor, ωrFor the angular velocity of rotation of rotor.
6. the generator motor of seawater hydroenergy storage station according to claim 5, it is characterised in that reluctance type power generation electricity
The constraint condition of rotor with salient pole number is in motivation,
pr=p1±p2
Wherein, p1For stator power winding number of pole-pairs, p2For stator control winding number of pole-pairs rotor；The constraint condition of salient pole number
It further include pr>0。
7. the generator motor of seawater hydroenergy storage station according to claim 6, it is characterised in that generator motor
Rotor is the reluctance rotor structure of the facewidth such as not, and geometric dimension is symmetrical on air gap circumference, it is assumed that maximum air gap length
It is respectively d with minimal air gap lengthmaxAnd dmin, air-gap permeance wave can indicate are as follows:
Wherein, βiRepresent the facewidth ratio of each tooth, 0≤βi≤1；J represents the tooth number under every salient pole, and the selection of j is essential to be considered carefully
Tooth will not influence motor main magnetic circuit, serration has enough mechanical strengths and meet the requirement of motor manufacturing technology, under every salient pole
Tooth number generally can choose 2~5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117013598A (en) * | 2023-07-10 | 2023-11-07 | 中节能(象山)环保能源有限公司 | Outlet voltage constant voltage control method, system, storage medium and intelligent terminal |
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| CN1335667A (en) * | 2001-08-16 | 2002-02-13 | 华中科技大学 | Double-feeding speed varying salient-pole synchronous motor |
| CN1705209A (en) * | 2004-05-28 | 2005-12-07 | 中原工学院 | Multi three-phase AC excitation pumped storage asynchronous generator/motor |
| CN101369747A (en) * | 2008-06-24 | 2009-02-18 | 清华大学 | Salient pole wound rotor asynchronous motor |
| CN101621276A (en) * | 2008-07-01 | 2010-01-06 | 沈阳工业大学 | High-power brushless double-fed motor variable frequency speed control system and starting method thereof |
| CN106787545A (en) * | 2017-01-05 | 2017-05-31 | 东南大学 | A kind of double-stator magneto resistance brushless wind generator of three electrical ports |
| CN210074914U (en) * | 2019-06-19 | 2020-02-14 | 长江勘测规划设计研究有限责任公司 | Generator motor suitable for seawater pumped storage power station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117013598A (en) * | 2023-07-10 | 2023-11-07 | 中节能(象山)环保能源有限公司 | Outlet voltage constant voltage control method, system, storage medium and intelligent terminal |
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