CN106021706A - Particle swarm-multi-physics field collaborative optimization-based efficient induction motor lightening method - Google Patents
Particle swarm-multi-physics field collaborative optimization-based efficient induction motor lightening method Download PDFInfo
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Abstract
The invention provides a particle warm-multi-physics field collaborative optimization-based efficient induction motor lightening method. The method comprises the following steps: giving an electromagnetic design overall target of an efficient induction motor according to parameters such as main size and rated data of the efficient induction motor; selecting a motor stator topological structure to determine a feasible plan set of the motor; selecting an electromagnetic design preliminary plan of the efficient induction motor; carrying out cost optimization on the efficient induction motor by adopting an intelligent algorithm so as to an optimum cost of the efficient induction motor; calculating working characteristics and main running data of the efficient induction motor by adopting a magnetic circuit method and an electromagnetic field finite element parallel manner; checking a temperature field of the efficient induction motor by adopting a finite element method; and comparing the weight of the optimized motor and a weight calculated in the electromagnetic design preliminary plan. According to the method provided by the invention, the target of realizing the efficient induction motor lightening is realized, and a plurality of physics fields are adopted to check the optimized result so that the correctness of the calculation result is ensured.
Description
Technical field
The present invention relates to energy-saving of motor system technical field, particularly relate to a kind of based on population-multiple physical field
The collaborative high performance induction motor light weight method optimized.
Background technology
Middle and small motor is the product having a large capacity and a wide range, and it is widely used in industry, agricultural, national defence, public affairs
By the every field such as facility and household electrical appliance, its power consumption accounts for more than the 60% of the total electricity in the whole nation, therefore, in
The development of the national economy, energy conservation, environmental conservation and people's lives are all risen by the development of micro-machine industry
Important facilitation.
During 11th Five-Year, energy-saving of motor system engineering is listed in one of 50 big emphasis energy conservation projects, is state
The major fields of family's energy-saving and emission-reduction work.The miniaturization of motor and lightweight be electric manufacturing from now on send out
Exhibition direction.The miniaturization of motor, lightweight and energy-saving and cost-reducing closely related, and on ultra-high efficient motor such as
What accomplish miniaturization and lightweight be then a large amount of experts and scholars focusing on focus place.
Summary of the invention
The embodiment provides a kind of high performance induction electricity working in coordination with optimization based on population-multiple physical field
Machine light weight method, to realize miniaturization and the lightweight of high performance induction motor.
To achieve these goals, this invention takes following technical scheme.
A kind of high performance induction motor light weight method working in coordination with optimization based on population-multiple physical field, including:
Step 1, require to provide the chi of high performance induction motor according to the product specification of high performance induction motor and technology
Very little and Electromagnetic Design overall goal；
Step 2, keep three circle constant under conditions of, according to motor oscillating noise, harmonic field, heat
Load and the consideration of electric load, screen the stator and rotor sructure of high performance induction motor and evaluate；
Step 3, high performance induction motor in step (2) stator and rotor sructure screening result on the basis of,
The rotor topological structure of high performance induction motor is selected, determines the feasibility side of high performance induction motor
Case collection；
Step 4, on the basis of the high performance induction motor feasible program collection that step (3) determines, use motor
Electromagnetic design calculation program calculates each electromagnetic parameter in high performance induction motor, selected high performance induction motor electricity
Magnetic Design Fundamentals scheme；
Step 5, in the high performance induction motor that step (4) calculates each electromagnetic parameter result basis
On, using the power factor of high performance induction motor, starting torque, starting current parameter as constraints,
Efficiency and light weight with high performance induction motor turn to two-objective programming, use particle cluster algorithm to high performance induction
Motor carries out efficiency and light weight turns to biobjective scheduling, met simultaneously high performance induction motor efficiency and
The optimal solution set of lightweight requirements；
Step 6, the high performance induction motor obtained in step (5) optimal solution set on the basis of, use magnetic
Road method and electromagnetic finite element parallel mode pass through balance of voltage equation and balance of efficiency equation to high performance induction
The operating characteristic of motor and service data are iterated calculating, if operating characteristic and service data meet want
Ask, then forward step (7) to and continue to calculate, if being unsatisfactory for requirement, then return step (5), again enter
Row optimizes calculating；
Step 7, in the operating characteristic of step (6) high performance induction motor and the result of calculation base of service data
On plinth, use temperature field FInite Element that the temperature field of high performance induction motor is carried out calculation and check, if temperature
Field meets requirement, then forwarding step (8) to and continue to calculate, if being unsatisfactory for requirement, then returning step
(5), re-start optimization to calculate；
Step 8, calculate in the weight of the high performance induction motor after optimization and Electromagnetic Design tentative programme each
The weight ratio of element, if weight ratio meets given material-saving requirement, then completes high performance induction motor
Electromagnetic Design overall plan；If weight ratio does not meets given material-saving requirement, then return step 5, to electricity
The structure of machine and parameter re-start optimization and calculate.
Further: in described step (1), the product specification of high performance induction motor includes: power, electricity
The data such as pressure, phase winding connected mode, the number of phases and rotating speed, technology requires to include: efficiency, power because of
Number, the class of insulation, the method for operation, temperature rise limit and Mechanical Reliability requirement.
Further: in described step (2), the stator and rotor sructure of high performance induction motor includes high performance induction
The selection of rotor grooved, slot fit, specific electric load and the thermic load of motor.
Further: in described step (3), the selection bag of the rotor topological structure of high performance induction motor
Include stator grooved, stator winding arrangement mode, slot shape of rotor and the selection of rotor bar material.
Further: in described step (4), motor electromagnetic design calculation procedure is used to calculate high performance induction
In motor, each electromagnetic parameter includes: determine the stator winding line rule of high performance induction motor according to rating data
And every groove conductor number；Magnetic Circuit Method is used to calculate each several part magnetic potential of high performance induction motor；Calculate efficiently sense
Answer each electromagnetic parameter of motor；Service behaviour and starting performance to high performance induction motor calculate.
Further: in described step (5), use particle swarm optimization algorithm that high performance induction motor is carried out
When cost optimization calculates, optimized variable selects to follow the principle that three circles are constant, and optimized variable is chosen as efficiently
The stator winding line scale of induction machine cun, every groove conductor number and each size of rotor groove, object function is
High performance induction motor uses the cost sum of each material.
Further: in described step (6), Magnetic Circuit Method and electromagnetic finite element parallel mode is used to pass through
Operating characteristic and the service data of high performance induction motor are carried out repeatedly by balance of voltage equation and balance of efficiency equation
In generation, calculates, and concretely comprises the following steps:
Step 6.1, set up two-dimensional electromagnetic field FEM (finite element) model after the optimization of high performance induction motor, write magnetic circuit
Calculation procedure；
Step 6.2, with the voltage equation of high performance induction motorCarry out for constraints
Electric current iterative computation, wherein,For the every supply voltage the most added of stator,Flowed by three-phase stator winding
The phase current crossed, R1For the resistance of the every phase winding of stator, x1eFor stator every phase leakage reactance,For stator winding
The three-phase electromotive force of upper sensing.
Step 6.3, with the power equation P of high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2It is about
Bundle condition carries out revolutional slip iterative computation, wherein, PCu2For high performance induction rotor copper loss, s is efficient
The revolutional slip of induction machine, PeFor the electromagnetic power of high performance induction motor, PΩFor high performance induction rotor
Mechanical loss, PSStray loss P for high performance induction motor2For output on high performance induction machine shaft
Mechanical output.
Step 6.4, comparison step 6.2 use Magnetic Circuit Method to calculate the operating characteristic of high performance induction motor, fortune
Row data and step 6.3 use electromagnetic finite element method to calculate the operating characteristic of high performance induction motor, fortune
Row data, if Magnetic Circuit Method and FInite Element meet simultaneouslyWith efficiently sense
Answer design of electrical motor requirement, wherein, U1The every supply voltage added mutually of stator for using Magnetic Circuit Method to obtain,
U2Stator every added supply voltage, s mutually for using electromagnetic finite element method to obtain1For using Magnetic Circuit Method meter
The high performance induction motor slip ratio obtained, s2For using the calculated efficient sense of electromagnetic finite element method
Answer motor slip ratio.ε1And ε2Respectively meet the residual error that iteration requires；
Then forward step (7) to and carry out temperature field finite element check, if Magnetic Circuit Method and FInite Element are the most satisfiedWithIt is unsatisfactory for high efficiency motor design when requiring, then returns to step 5 the most excellent
Change and calculate, if meeting when Magnetic Circuit Method is different with FInite ElementWithThen return to
Step 6.1, re-starts electromagnetic finite element modeling and amendment Magnetic Circuit Method program.
Further: in described step (7), the temperature field FInite Element temperature to high performance induction motor is used
Degree field carries out concretely comprising the following steps of calculation and check:
Step 7.1, set up two-dimensional temperature field FEM (finite element) model after the optimization of high performance induction motor；
Step 7.2, the stator winding copper loss calculated according to electromagnetic finite element, rotor windings copper loss and iron loss
Calculate heat flow density q of high performance induction motorv=P/V, wherein qvFor high performance induction electric machine rotor winding
And the heat flow density on iron core, P is the stator winding copper loss of high performance induction motor, rotor windings copper loss and ferrum
Consumption, V is the volume of stator winding, rotor windings and iron core.
Step 7.3, the casing table of the revolutional slip calculating high performance induction motor gone out according to electromagnetic finite element iteration
Face coefficient of heat transfer α=9.73+14v0.62With air gap Equivalent Thermal Conductivities
λeff=0.0019 η-2.9084·Re0.4614In(3.33361·η), η=ro/Ri, wherein, v is high performance induction motor case
The air velocity of heat radiation between cog, roFor high performance induction rotor external diameter, RiFor high performance induction motor stator
Internal diameter, Re is fluid Reynolds number.
Step 7.4 into, the result that step 7.2 and 7.3 calculate is brought the temperature field finite element mould of step 7.1
Type calculates the temperature field of high performance induction motor, when the temperature field of high performance induction motor is unsatisfactory forWithDuring requirement, then return step 5 re-optimization and calculate, wherein, Tw1
For high performance induction motor winding observed temperature, Tw2Temperature, T is calculated for high performance induction motor windingfe1For efficiently
Induction machine iron core observed temperature, Tfe2Temperature, ε is calculated for high performance induction electric machine iron core3And ε4It is respectively full
The residual error that foot iteration requires；
If the temperature field of high performance induction motor meetsWithRequirement, then forward to
Step 8 continues to judge the lightweight of high performance induction motor.
Further: in described step (8), weight and the electricity of the high performance induction motor after optimization are calculated
The weight ratio of each element in magnetic Design Fundamentals scheme, if weight ratio meets given material-saving requirement,
Then complete the Electromagnetic Design overall plan of high performance induction motor, including:
Obtain the copper weight of high performance induction motor, ferrum weight and aluminum weight, as its difference meetsIts
In, G1Weight after optimizing for high performance induction motor, G0Weight before optimizing for high performance induction motor, then complete
The Electromagnetic Design overall plan of high performance induction motor.
The technical scheme that thered is provided by embodiments of the invention described above is it can be seen that the one of the embodiment of the present invention
Work in coordination with the high performance induction motor lightweight algorithm of optimization based on population-multiple physical field, give new design
Method, by the way of multiple iteration, combines FEM calculation with analytic formula；Use intelligence excellent
Change algorithm ultra-high efficient motor cost is optimized so that ultra-high efficient motor is in the constant situation of performance condition
Under, motor cost is effectively reduced.After using first Analytical Design, finite element is checked, in design process
Parameters checked.Reduce produced error during calculating, the result degree of accuracy finally obtained
Higher.
Aspect and advantage that the present invention adds will part be given in the following description, and these are by from following
Description becomes obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some bright embodiments, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of efficient sense working in coordination with optimization based on population-multiple physical field that Fig. 1 provides for the embodiment of the present invention
Answer the process chart of motor light weight method；
The two-dimensional electromagnetic field solving model of a kind of large-size machine that Fig. 2 provides for the embodiment of the present invention；
The two-dimensional temperature field solving model of a kind of large-size machine that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings,
The most same or similar label represents same or similar element or has same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative used herein
" one ", " one ", " described " and " being somebody's turn to do " may also comprise plural form.Will be further understood that
, the wording used in the description of the present invention " includes " referring to there is described feature, integer, step
Suddenly, operation, element and/or assembly, but it is not excluded that existence or add other features one or more,
Integer, step, operation, element, assembly and/or their group.It should be understood that when we claim element quilt
" connecting " or during " coupled " to another element, it can be directly connected or coupled to other elements, or
Intermediary element can also be there is in person.Additionally, " connection " used herein or " coupling " can include nothing
Line connects or couples.Wording "and/or" used herein includes that what one or more was associated lists item
Any cell and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein
(including technical term and scientific terminology) has and one of the those of ordinary skill in art of the present invention
As understand identical meaning.Should also be understood that those terms defined in such as general dictionary should
It is understood to that there is the meaning consistent with the meaning in the context of prior art, and unless as here one
Sample defines, and will not explain by idealization or the most formal implication.
For ease of the understanding to the embodiment of the present invention, below in conjunction with accompanying drawing as a example by several specific embodiments
It is further explained explanation, and each embodiment is not intended that the restriction to the embodiment of the present invention.
Embodiment one
This embodiment offers a kind of high performance induction motor light weight working in coordination with optimization based on population-multiple physical field
The handling process of change method is as it is shown in figure 1, include following process step:
Step (1), require to provide high performance induction motor according to the product specification of high performance induction motor and technology
Key dimension and Electromagnetic Design overall goal；
Wherein, the product specification of high performance induction motor specifically includes that power, voltage, phase winding connection side
The data such as formula, the number of phases and rotating speed, technology require specifically include that efficiency, power factor, the class of insulation,
The method of operation, temperature margin and Mechanical Reliability requirement etc..
Step (2), keep three circle constant under conditions of, comprehensively to motor oscillating noise, harmonic wave magnetic
, thermic load and the consideration of electric load, the stator and rotor sructure of high performance induction motor is carried out complicated screening and
Evaluating, wherein, the stator and rotor sructure of high performance induction motor at least gives the rotor groove of high performance induction motor
The selection of type, slot fit, specific electric load and thermic load.Wherein three circles are constant, refer to stator outer diameter, determine
Sub-internal diameter and rotor internal diameter size can not change.
Step (3), the result basis of stator and rotor sructure screening of high performance induction motor in step (2)
On, the rotor topological structure of high performance induction motor is selected, determines the feasible of high performance induction motor
Property scheme collection.Wherein, the selection of the rotor topological structure of high performance induction motor should include stator grooved chi
Very little, stator winding arrangement mode, slot shape of rotor size and the selection of rotor bar material.
Step (4), on the basis of the high performance induction motor feasible program collection that step (3) determines, use
Motor electromagnetic design calculation procedure calculates each electromagnetic parameter in high performance induction motor, selected high performance induction electricity
The Electromagnetic Design tentative programme of machine.Specifically include that first main according to rating data and fixed motor
Size, advises the stator winding line of high performance induction motor and every groove conductor number is designed calculating；Secondly,
Use Magnetic Circuit Method to calculate each several part magnetic potential of high performance induction motor, obtain excitation reactance and magnetizing current；Again
Secondary, calculate each electromagnetic parameter of high performance induction motor, such as: rotor leakage reactance, fixed rotor resistance,
The parameters such as the weight of effective material and stator current；The finally service behaviour to high performance induction motor, as fixed
Sub-copper loss, rotor copper loss and core loss, and starting performance, as starting current and starting torque are carried out
Calculate.
Step (5), step (4) high performance induction motor magnetic circuit calculate result on, with high performance induction
The parameters such as the power factor of motor, starting torque, starting current are as constraints, with high performance induction electricity
The efficiency of machine and light weight turn to two-objective programming, use particle swarm optimization algorithm to carry out high performance induction motor
Efficiency and light weight turn to biobjective scheduling, and the efficiency and the lightweight that are met high performance induction motor are wanted simultaneously
The optimal solution set asked；
When using particle swarm optimization algorithm that high performance induction motor carries out cost optimization calculating, optimized variable
Selection should follow the principle that three circles are constant, and optimized variable selection can be the stator winding of high performance induction motor
Line scale cun, every groove conductor number and each size of rotor groove, object function is that high performance induction motor uses respectively
The cost sum of material, calculating function is:
Fitness function is to be respectively, η high performance induction electric efficiency,High performance induction power of motor because of
Number, TstHigh performance induction electric motor starting torque multiple and IstHigh performance induction motor starting currents multiple.
Other fees refer to the cost of cost and the casing etc. of high performance induction electric motor rotor aluminium casting.These four basic
Index is as the standard limited value meeting high performance induction motor.Problem nonlinear for constraints, uses
SUMT exterior penalty function solves.By being introduced into penalty function, object functionConstraintsBeing fused into augmented objective function, it can punish any trend running counter to constraint, forces unconfinement
Optimizing towards close in feasible zone, the optimization design problem the most at last with inequality constraints is adjusted to increasing
The unconstrained optimization design problem of wide object function, its augmented objective function is constructed as follows.
Wherein ui(gi) it is unit jump function；r(k)For penalty factor, be one by simple proportionate relationship
Carry out the infinite sequence being incremented by, 0 ＜ r1＜ r2＜ ... ＜ rk＜ rk+1＜ ....
Step (6), the high performance induction motor obtained in step (5) optimum results on the basis of, adopt
Balance of voltage equation and balance of efficiency equation is passed through to efficiently by Magnetic Circuit Method and electromagnetic finite element parallel mode
The operating characteristic of induction machine and main service data are iterated calculating, if operating characteristic and main operation
Data meet requirement, then forwarding step (7) to and continue to calculate, if being unsatisfactory for requirement, then returning step
(5), re-start optimization to calculate；
Above-mentioned employing Magnetic Circuit Method and electromagnetic finite element parallel mode to the operating characteristic of high performance induction motor and
Main service data is iterated calculating, and concretely comprises the following steps:
Step 6.1, set up the two-dimensional electromagnetic field FEM (finite element) model of high performance induction motor, as in figure 2 it is shown, with
Time write magnetic circuit calculation procedure；
Step 6.2, with the voltage equation of high performance induction motorCarry out for constraints
Electric current iterative computation, wherein,For the every supply voltage the most added of stator,Flowed by three-phase stator winding
The phase current crossed, R1For the resistance of the every phase winding of stator, x1eFor stator every phase leakage reactance,For stator winding
The three-phase electromotive force of upper sensing；Obtain using Magnetic Circuit Method to calculate the every supply voltage U added mutually of stator1,
Magnetic Circuit Method is used to calculate high performance induction motor slip ratio s1。
Step 6.3, with the power equation P of high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2It is about
Bundle condition carries out revolutional slip iterative computation, wherein, PCu2For high performance induction rotor copper loss, s is efficient
The revolutional slip of induction machine, PeFor the electromagnetic power of high performance induction motor, PΩFor high performance induction rotor
Mechanical loss, PSStray loss P for high performance induction motor2For output on high performance induction machine shaft
Mechanical output, obtains using electromagnetic finite element method to calculate the every added supply voltage U mutually of stator2, use
Electromagnetic finite element method calculates high performance induction motor slip ratio s2。
Step 6.4, comparison step 6.2 use the operating characteristic that Magnetic Circuit Method calculates, main service data and
Step 6.3 uses the operating characteristic that electromagnetic finite element method calculates, main service data, if magnetic circuit
Method and FInite Element meet simultaneouslyWith high performance induction design of electrical motor requirement,
Wherein, U1The every supply voltage added mutually of stator for using Magnetic Circuit Method to obtain, U2For using electromagnetic field to have
Stator every added supply voltage, the s mutually that limit unit method obtains1For using the calculated high performance induction of Magnetic Circuit Method
Motor slip ratio, s2For using electromagnetic finite element method calculated high performance induction motor slip ratio.ε1
And ε2Respectively meet the residual error that iteration requires.Then forward step (7) to and carry out temperature field finite element check,
If Magnetic Circuit Method and FInite Element are the most satisfiedWithIt is unsatisfactory for high efficiency motor design
During requirement, then return to step (5) re-optimization and calculate, if meeting when Magnetic Circuit Method is different with FInite ElementWithThen return to step 6.1, re-start electromagnetic finite element modeling and repair
Change Magnetic Circuit Method program.
Step (7), on the basis of step (6) Electromagnetic Calculation result, use temperature field finite element
The temperature field of high performance induction motor is calculated by method, if temperature meets requirement, then forwards step (8) to and continues
Continuous calculating, if being unsatisfactory for requirement, then returns step (5), re-starts optimization and calculates.
The model of a kind of temperature field FInite Element that the embodiment of the present invention provides is as it is shown on figure 3, to high performance induction
Motor optimum results carries out concretely comprising the following steps of temperature field check:
Step 7.1, set up two-dimensional temperature field FEM (finite element) model after the optimization of high performance induction motor；
Step 7.2, the stator winding copper loss calculated according to electromagnetic finite element, rotor windings copper loss and iron loss
Deng heat flow density q calculating high performance induction motorv=P/V, wherein qvFor high performance induction electric machine rotor around
Heat flow density in group and iron core, P be the stator winding copper loss of high performance induction motor, rotor windings copper loss and
Iron loss, V is the volume of stator winding, rotor windings and iron core；Step 7.3, according to electromagnetic finite element
The revolutional slip that iteration goes out calculates the casing surface coefficient of heat transfer α=9.73+14v of high performance induction motor0.62And air gap
Equivalent Thermal Conductivities λeff=0.0019 η-2.9084·Re0.4614In(3.33361·η), wherein, v is high performance induction motor machine
The air velocity of shell heat radiation between cog, roFor high performance induction rotor external diameter, RiFixed for high performance induction motor
Sub-internal diameter, Re is fluid Reynolds number；Step 7.4, bring the result that step 7.2 and 7.3 calculate into step
The temperature field FEM (finite element) model of 7.1 calculates the temperature field of high performance induction motor.Temperature when high performance induction motor
Degree result is unsatisfactory forWithStep (5) re-optimization is then returned during requirement
Calculate, if meeting requirement, forwarding step (8) to and continuing the lightweight of high performance induction motor is judged,
Wherein, Tw1For high performance induction motor winding observed temperature, Tw2Temperature is calculated for high performance induction motor winding,
Tfe1For high performance induction electric machine iron core observed temperature, Tfe2Temperature, ε is calculated for high performance induction electric machine iron core3With
ε4Respectively meet the residual error that iteration requires..
Step (8), step (7) temperature field check meet high performance induction design of electrical motor require basis
On, the weight calculated in weight and the Electromagnetic Design tentative programme of high performance induction motor after optimizing is carried out
Weight ratio calculates, if weight ratio meets given material-saving requirement, i.e. determines high performance induction motor electromagnetic
Design overall scheme, complete design requirement；If weight ratio does not meets given material-saving requirement, then return
Step (5), structure and parameter to motor re-start optimization and calculate.
The weight calculated in the above-mentioned weight to optimization rear motor and Electromagnetic Design tentative programme carries out difference
Calculating, main by weight should comprise the copper weight of high performance induction motor, ferrum weight and aluminum weight.If weight ratio accords with
Close given material-saving requirement, meetWherein, G1Weight after optimizing for high performance induction motor,
G0Weight before optimizing for high performance induction motor, ε5For the threshold value set, i.e. determine high performance induction motor electromagnetic
Design overall scheme；
If weight ratio does not meets given material-saving requirement, it is unsatisfactory forThen return to step
Suddenly (5) re-optimization calculates.
In sum, a kind of efficient sense working in coordination with optimization based on population-multiple physical field of the embodiment of the present invention
Answer motor lightweight algorithm, have the advantage that compared with traditional method
1, new method for designing is given, by the way of multiple iteration, by FEM calculation and parsing public affairs
Formula combines.Achieve the light-weighted target of high performance induction motor, and after using multiple physical field to optimizing
Result is checked, it is ensured that the accuracy of result of calculation.
2, use intelligent optimization algorithm that ultra-high efficient motor cost is optimized so that ultra-high efficient motor is in property
In the case of energy condition is constant, motor cost is effectively reduced.
3, after using first Analytical Design, finite element is checked, and the parameters in design process is checked.
Reducing produced error during calculating, the result degree of accuracy finally obtained is higher.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, in accompanying drawing
Module or flow process not necessarily implement necessary to the present invention.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical between each embodiment
Similar part sees mutually, and what each embodiment stressed is different from other embodiments
Part.For device or system embodiment, owing to it is substantially similar to embodiment of the method,
So describing fairly simple, relevant part sees the part of embodiment of the method and illustrates.Above retouched
The Apparatus and system embodiment stated is only schematically, the wherein said unit illustrated as separating component
Can be or may not be physically separate, the parts shown as unit can be or also may be used
Not to be physical location, i.e. may be located at a place, or multiple NE can also be distributed to
On.Some or all of module therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.Those of ordinary skill in the art, in the case of not paying creative work, are i.e. appreciated that also
Implement.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not
Being confined to this, any those familiar with the art, can in the technical scope that the invention discloses
The change readily occurred in or replacement, all should contain within protection scope of the present invention.Therefore, the present invention
Protection domain should be as the criterion with scope of the claims.
Claims (9)
1. a high performance induction motor light weight method for optimization is worked in coordination with based on population-multiple physical field, its
It is characterised by, including:
Step 1, require to provide the chi of high performance induction motor according to the product specification of high performance induction motor and technology
Very little and Electromagnetic Design overall goal；
Step 2, keep three circle constant under conditions of, according to motor oscillating noise, harmonic field, heat
Load and the consideration of electric load, screen the stator and rotor sructure of high performance induction motor and evaluate；
Step 3, high performance induction motor in step (2) stator and rotor sructure screening result on the basis of,
The rotor topological structure of high performance induction motor is selected, determines the feasibility side of high performance induction motor
Case collection；
Step 4, on the basis of the high performance induction motor feasible program collection that step (3) determines, use motor
Electromagnetic design calculation program calculates each electromagnetic parameter in high performance induction motor, selected high performance induction motor electricity
Magnetic Design Fundamentals scheme；
Step 5, in the high performance induction motor that step (4) calculates each electromagnetic parameter result basis
On, using the power factor of high performance induction motor, starting torque, starting current parameter as constraints,
Efficiency and light weight with high performance induction motor turn to two-objective programming, use particle cluster algorithm to high performance induction
Motor carries out efficiency and light weight turns to biobjective scheduling, met simultaneously high performance induction motor efficiency and
The optimal solution set of lightweight requirements；
Step 6, the high performance induction motor obtained in step (5) optimal solution set on the basis of, use magnetic
Road method and electromagnetic finite element parallel mode pass through balance of voltage equation and balance of efficiency equation to high performance induction
The operating characteristic of motor and service data are iterated calculating, if operating characteristic and service data meet want
Ask, then forward step (7) to and continue to calculate, if being unsatisfactory for requirement, then return step (5), again enter
Row optimizes calculating；
Step 7, in the operating characteristic of step (6) high performance induction motor and the result of calculation base of service data
On plinth, use temperature field FInite Element that the temperature field of high performance induction motor is carried out calculation and check, if temperature
Field meets requirement, then forwarding step (8) to and continue to calculate, if being unsatisfactory for requirement, then returning step
(5), re-start optimization to calculate；
Step 8, calculate in the weight of the high performance induction motor after optimization and Electromagnetic Design tentative programme each
The weight ratio of element, if weight ratio meets given material-saving requirement, then completes high performance induction motor
Electromagnetic Design overall plan；If weight ratio does not meets given material-saving requirement, then return step 5, to electricity
The structure of machine and parameter re-start optimization and calculate.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (1), the product specification bag of high performance induction motor
Including: the data such as power, voltage, phase winding connected mode, the number of phases and rotating speed, technology requires to include: effect
Rate, power factor, the class of insulation, the method for operation, temperature rise limit and Mechanical Reliability requirement.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (2), the stator and rotor sructure bag of high performance induction motor
Include the selection of rotor grooved, slot fit, specific electric load and the thermic load of high performance induction motor.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (3), the rotor topology knot of high performance induction motor
The selection of structure includes stator grooved, stator winding arrangement mode, slot shape of rotor and the choosing of rotor bar material
Select.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (4), use motor electromagnetic design calculation procedure meter
In calculating high performance induction motor, each electromagnetic parameter includes: determine determining of high performance induction motor according to rating data
Sub-winding wire rule and every groove conductor number；Magnetic Circuit Method is used to calculate each several part magnetic potential of high performance induction motor；Meter
Calculate each electromagnetic parameter of high performance induction motor；Service behaviour and starting performance to high performance induction motor
Calculate.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (5), use particle swarm optimization algorithm to efficiently sense
When answering motor to carry out cost optimization calculating, optimized variable selects to follow the principles that three circles are constant, optimized variable
It is chosen as the stator winding line scale cun of high performance induction motor, every groove conductor number and each size of rotor groove,
Object function is the cost sum that high performance induction motor uses each material.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (6), use Magnetic Circuit Method and electromagnetic finite element also
Line mode by balance of voltage equation and balance of efficiency equation to the operating characteristic of high performance induction motor and operation
Data are iterated calculating, and concretely comprise the following steps:
Step 6.1, set up two-dimensional electromagnetic field FEM (finite element) model after the optimization of high performance induction motor, write magnetic circuit
Calculation procedure；
Step 6.2, with the voltage equation of high performance induction motorCarry out for constraints
Electric current iterative computation, wherein,For the every supply voltage the most added of stator,Flowed by three-phase stator winding
The phase current crossed, R1For the resistance of the every phase winding of stator, x1eFor stator every phase leakage reactance,For stator winding
The three-phase electromotive force of upper sensing；
Step 6.3, with the power equation P of high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2It is about
Bundle condition carries out revolutional slip iterative computation, wherein, PCu2For high performance induction rotor copper loss, s is efficient
The revolutional slip of induction machine, PeFor the electromagnetic power of high performance induction motor, PΩFor high performance induction rotor
Mechanical loss, PSStray loss P for high performance induction motor2For output on high performance induction machine shaft
Mechanical output；
Step 6.4, comparison step 6.2 use Magnetic Circuit Method to calculate the operating characteristic of high performance induction motor, fortune
Row data and step 6.3 use electromagnetic finite element method to calculate the operating characteristic of high performance induction motor, fortune
Row data, if Magnetic Circuit Method and FInite Element meet simultaneouslyWith efficiently sense
Answer design of electrical motor requirement, wherein, U1The every supply voltage added mutually of stator for using Magnetic Circuit Method to obtain,
U2Stator every added supply voltage, s mutually for using electromagnetic finite element method to obtain1For using Magnetic Circuit Method meter
The high performance induction motor slip ratio obtained, s2For using the calculated efficient sense of electromagnetic finite element method
Answer motor slip ratio.ε1And ε2Respectively meet the residual error that iteration requires；
Then forward step (7) to and carry out temperature field finite element check, if Magnetic Circuit Method and FInite Element are the most satisfiedWithIt is unsatisfactory for high efficiency motor design when requiring, then returns to step 5 the most excellent
Change and calculate, if meeting when Magnetic Circuit Method is different with FInite ElementWithThen return to
Step 6.1, re-starts electromagnetic finite element modeling and amendment Magnetic Circuit Method program.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (7), use temperature field FInite Element to efficiently sense
The temperature field answering motor carries out concretely comprising the following steps of calculation and check:
Step 7.1, set up two-dimensional temperature field FEM (finite element) model after the optimization of high performance induction motor；
Step 7.2, the stator winding copper loss calculated according to electromagnetic finite element, rotor windings copper loss and iron loss
Calculate heat flow density q of high performance induction motorv=P/V, wherein qvFor high performance induction electric machine rotor winding
And the heat flow density on iron core, P is the stator winding copper loss of high performance induction motor, rotor windings copper loss and ferrum
Consumption, V is the volume of stator winding, rotor windings and iron core；
Step 7.3, the casing table of the revolutional slip calculating high performance induction motor gone out according to electromagnetic finite element iteration
Face coefficient of heat transfer α=9.73+14v0.62With air gap Equivalent Thermal Conductivities
λeff=0.0019 η-2.9084·Re0.4614In(3.33361·η), η=ro/Ri, wherein, v is high performance induction motor case
The air velocity of heat radiation between cog, roFor high performance induction rotor external diameter, RiFor high performance induction motor stator
Internal diameter, Re is fluid Reynolds number；
Step 7.4 into, the result that step 7.2 and 7.3 calculate is brought the temperature field finite element mould of step 7.1
Type calculates the temperature field of high performance induction motor, when the temperature field of high performance induction motor is unsatisfactory for
WithDuring requirement, then return step 5 re-optimization and calculate, wherein, Tw1
For high performance induction motor winding observed temperature, Tw2Temperature, T is calculated for high performance induction motor windingfe1For efficiently
Induction machine iron core observed temperature, Tfe2Temperature, ε is calculated for high performance induction electric machine iron core3And ε4It is respectively full
The residual error that foot iteration requires；
If the temperature field of high performance induction motor meetsWithRequirement, then forward to
Step 8 continues to judge the lightweight of high performance induction motor.
The high performance induction motor working in coordination with optimization based on population-multiple physical field the most according to claim 1
Lightweight algorithm, it is characterised in that: in described step (8), calculate the high performance induction motor after optimization
Weight and Electromagnetic Design tentative programme in the weight ratio of each element, if weight ratio meets given
Material-saving requirement, then complete the Electromagnetic Design overall plan of high performance induction motor, including:
Obtain the copper weight of high performance induction motor, ferrum weight and aluminum weight, as its difference meetsIts
In, G1Weight after optimizing for high performance induction motor, G0Weight before optimizing for high performance induction motor, then complete
The Electromagnetic Design overall plan of high performance induction motor.
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