CN106021706B - High performance induction motor light weight method based on the collaboration optimization of population multiple physical field - Google Patents
High performance induction motor light weight method based on the collaboration optimization of population multiple physical field Download PDFInfo
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- CN106021706B CN106021706B CN201610327002.0A CN201610327002A CN106021706B CN 106021706 B CN106021706 B CN 106021706B CN 201610327002 A CN201610327002 A CN 201610327002A CN 106021706 B CN106021706 B CN 106021706B
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
The present invention provides a kind of high performance induction motor light weight methods based on the collaboration optimization of population multiple physical field, comprising: according to parameters such as the key dimension of high performance induction motor, rating datas, provides the electromagnetic design overall goal of high performance induction motor；Electric machine rotor topological structure is selected, determines the feasible scheme collection of motor；Selected high performance induction motor electromagnetic Design Fundamentals scheme；Cost optimization is carried out to high performance induction motor using intelligent algorithm, obtains the Optimum cost of high performance induction motor；The working characteristics of high performance induction motor and main operation data are calculated using Magnetic Circuit Method and electromagnetic finite element parallel mode；It is checked using temperature field of the FInite Element to high performance induction motor；The weight of motor after optimization is calculated compared with weight calculated in electromagnetic design tentative programme.The present invention realizes the light-weighted target of high performance induction motor, and is checked using multiple physical field to the result after optimization, guarantees the accuracy of calculated result.
Description
Technical field
The present invention relates to energy-saving of motor system technical fields, more particularly to a kind of cooperateed with based on population multiple physical field to optimize
High performance induction motor light weight method.
Background technique
Middle and small motor is the product having a large capacity and a wide range, it is widely used in industry, agricultural, national defence, public utility and family
The every field such as electrical appliance, power consumption account for 60% or more of national total electricity, and therefore, the development of middle and small motor industry is to state
People's economic construction, energy conservation, environmental protection and people's lives all play important facilitation.
During 11th Five-Year, it is that national energy-saving subtracts that energy-saving of motor system engineering, which is listed in one of 50 big emphasis energy conservation projects,
Arrange the major fields of work.The miniaturization and lightweight of motor is the developing direction of electric manufacturing from now on.The miniaturization of motor,
Lightweight with it is energy-saving closely related, and how to accomplish miniaturization and lightweight on ultra-high efficient motor is then that a large amount of experts learn
Person focusing on focus where.
Summary of the invention
The embodiment provides a kind of high performance induction motor light weights based on the collaboration optimization of population multiple physical field
Change method, to realize the miniaturization and lightweight of high performance induction motor.
To achieve the goals above, this invention takes following technical solutions.
A kind of high performance induction motor lightweight algorithm optimized based on population-multiple physical field collaboration, comprising:
Step 1, the size and electricity that high performance induction motor is provided according to the product specification and technical requirements of high performance induction motor
Magnetic designs overall goal；
Step 2, under conditions of the circle of holding three is constant, according to negative to motor oscillating noise, harmonic field, thermic load and electricity
The considerations of lotus, is screened and is evaluated to the stator and rotor sructure of high performance induction motor；
Step 3, high performance induction motor in step (2) stator and rotor sructure screening result on the basis of, to efficient sense
It answers the rotor topological structure of motor to be selected, determines the feasible scheme collection of high performance induction motor；
Step 4, step (3) determine high performance induction motor feasible program collection on the basis of, designed using motor electromagnetic
Calculation procedure calculates each electromagnetic parameter in high performance induction motor, selectes high performance induction motor electromagnetic Design Fundamentals scheme；
Step 5, in the calculated high performance induction motor of step (4) on the basis of the result of each electromagnetic parameter, with efficient
The power factor of induction machine, starting torque, starting current parameter are as constraint condition, with the efficiency of high performance induction motor and light
It is quantified as two-objective programming, efficiency is carried out to high performance induction motor using particle swarm algorithm and light weight turns to biobjective scheduling, is obtained
To meeting the efficiency of high performance induction motor and the optimal solution set of lightweight requirements simultaneously；
Step 6, on the basis of the optimal solution set for the high performance induction motor that step (5) obtains, using Magnetic Circuit Method and electromagnetism
Field finite element parallel mode passes through voltage equation and balance of efficiency equation to the working characteristics and operation of high performance induction motor
Data are iterated calculating, if working characteristics and operation data are met the requirements, go to step (7) and continue to calculate, if being unsatisfactory for
It is required that then return step (5), re-start optimization and calculate；
Step 7, on the basis of the calculated result of the working characteristics of step (6) high performance induction motor and operation data, use
Temperature field FInite Element carries out calculation and check to the temperature field of high performance induction motor and goes to step if temperature field is met the requirements
(8) continue to calculate, if being unsatisfactory for requiring, return step (5) re-starts optimization and calculates；
Step 8 calculates each element in the weight and electromagnetic design tentative programme of the high performance induction motor after optimization
Weight ratio completes the electromagnetic design overall plan of high performance induction motor if weight ratio meets given section material requirement；Such as
Fruit weight ratio does not meet given section material requirement, then return step 5, structure and parameter to motor re-start optimization and calculate.
Further: in the step (1), the product specification of high performance induction motor includes: power, voltage, phase winding company
The data such as mode, the number of phases and revolving speed are connect, technical requirements include: efficiency, power factor, the class of insulation, the method for operation, temperature rise limit
And Mechanical Reliability requirement.
Further: in the step (2), the stator and rotor sructure of high performance induction motor includes that the fixed of high performance induction motor turns
Pilot trench type, slot cooperation, the selection of specific electric load and thermic load.
Further: in the step (3), the selection of the rotor topological structure of high performance induction motor includes stator slot
The selection of type, stator winding arrangement mode, slot shape of rotor and rotor bar material.
Further: in the step (4), being calculated using motor electromagnetic design calculation procedure each in high performance induction motor
Electromagnetic parameter include: according to rating data determine high performance induction motor stator winding line gauge and every slot conductor number；Using magnetic circuit
Each section magnetic potential of method calculating high performance induction motor；Calculate each electromagnetic parameter of high performance induction motor；To high performance induction electricity
The working performance and starting performance of machine are calculated.
Further: in the step (5), cost optimization meter being carried out to high performance induction motor using particle swarm optimization algorithm
When calculation, optimized variable selection follows the constant principle of three circles, and optimized variable is selected as the stator winding line gauge of high performance induction motor
Size, every slot conductor number and each size of rotor slot, objective function are the sum of the cost that high performance induction motor uses each material.
Further: in the step (6), balance of voltage side being passed through using Magnetic Circuit Method and electromagnetic finite element parallel mode
Journey and balance of efficiency equation are iterated calculating, specific steps to the working characteristics and operation data of high performance induction motor are as follows:
Step 6.1 establishes two-dimensional electromagnetic field finite element model after the optimization of high performance induction motor, writes magnetic circuit and calculates journey
Sequence；
Step 6.2, with the voltage equation of high performance induction motorElectric current is carried out for constraint condition
Iterative calculation, whereinFor supply voltage added by the every phase of stator,The phase current flowed through by three-phase stator winding, R1It is fixed
The resistance of the every phase winding of son, x1eFor the every phase leakage reactance of stator,For the three-phase electromotive force incuded on stator winding.
Step 6.3, the power equation P with high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2For constraint condition progress
Revolutional slip iterative calculation, wherein PCu2For high performance induction rotor copper loss, s is the revolutional slip of high performance induction motor, PeFor height
Imitate the electromagnetic power of induction machine, PΩFor the mechanical loss of high performance induction rotor, PSFor the spuious damage of high performance induction motor
Consume P2For the mechanical output exported on high performance induction machine shaft.
Step 6.4, comparison step 6.2 using Magnetic Circuit Method calculate the working characteristics of high performance induction motor, operation data and
Step 6.3 calculates the working characteristics of high performance induction motor, operation data using electromagnetic finite element method, if Magnetic Circuit Method and
FInite Element meets simultaneouslyWith the requirement of high performance induction design of electrical motor, wherein U1To use
Supply voltage added by the every phase of the stator that Magnetic Circuit Method obtains, U2Added by the every phase of stator obtained for use electromagnetic finite element method
Supply voltage, s1For the high performance induction motor slip ratio being calculated using Magnetic Circuit Method, s2To use electromagnetic finite element method meter
Obtained high performance induction motor slip ratio.ε1And ε2Respectively meet the residual error of iteration requirement；
It then goes to step (7) and carries out the check of temperature field finite element, if Magnetic Circuit Method and FInite Element only meetWithWhen being unsatisfactory for high efficiency motor design requirement, then the calculating of step 5 re-optimization is returned to, if
Magnetic Circuit Method and FInite Element do not meet simultaneouslyWithStep 6.1 is then returned to, electromagnetism is re-started
Field finite element modeling and modification Magnetic Circuit Method program.
Further: in the step (7), school being carried out using temperature field of the temperature field FInite Element to high performance induction motor
Assess the specific steps of calculation are as follows:
Step 7.1 establishes two-dimensional temperature field 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 losses computation are efficient
The heat flow density q of induction machinev=P/V, wherein qvFor the heat flow density on high performance induction electric machine rotor winding and iron core, P is
Stator winding copper loss, rotor windings copper loss and the iron loss of high performance induction motor, V are the body of stator winding, rotor windings and iron core
Product.
Step 7.3, the casing surface radiating that high performance induction motor is calculated according to the revolutional slip that electromagnetic finite element iteration goes out
Factor alpha=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 the air velocity of high performance induction motor case heat dissipation between cog, roFor high performance induction rotor outer diameter, RiFor
High performance induction motor stator internal diameter, Re are fluid Reynolds number.
Step 7.2 and 7.3 calculated results are brought into the temperature field finite element model of step 7.1 and are calculated by step 7.4
The temperature field of high performance induction motor out, when the temperature field of high performance induction motor is unsatisfactory forWithIt is required that when, then 5 re-optimization of return step calculates, wherein Tw1Temperature is surveyed for high performance induction machine winding
Degree, Tw2Temperature, T are calculated for high performance induction machine windingfe1For high performance induction electric machine iron core observed temperature, Tfe2For high performance induction electricity
Machine iron core calculates temperature, ε3And ε4Respectively meet the residual error of iteration requirement；
If the temperature field of high performance induction motor meetsWithIt is required that then going to step
Rapid 8 continue to judge the lightweight of high performance induction motor.
Further: in the step (8), the weight and electromagnetic design of the high performance induction motor after calculating optimization are preliminary
The weight ratio of each element in scheme completes the electricity of high performance induction motor if weight ratio meets given section material requirement
Magnetic designs overall plan, comprising:
The copper weight, iron weight and aluminium weight for obtaining high performance induction motor, as its difference meetsWherein, G1For height
Imitate weight after induction machine optimizes, G0Weight before optimizing for high performance induction motor, then complete the electromagnetic design of high performance induction motor
Overall plan.
As can be seen from the technical scheme provided by the above-mentioned embodiment of the present invention, one kind of the embodiment of the present invention is based on particle
The high performance induction motor lightweight algorithm of group-multiple physical field collaboration optimization, gives new design method, passes through multiple iteration
Mode combines FEM calculation with analytic formula；Ultra-high efficient motor cost is optimized using intelligent optimization algorithm, is made
Ultra-high efficient motor is obtained in the case where performance condition is constant, motor cost is effectively reduced.Using having after first Analytical Design
Limit member is checked, and the parameters in design process are checked.Reduce generated error, the final result when calculating
Accuracy is higher.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that a kind of high performance induction motor based on the collaboration optimization of population multiple physical field provided in an embodiment of the present invention is light
The process flow diagram of quantization method；
Fig. 2 is a kind of two-dimensional electromagnetic field solving model of large-size machine provided in an embodiment of the present invention；
Fig. 3 is a kind of two-dimensional temperature field solving model of large-size machine provided in an embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one
This embodiment offers a kind of high performance induction motor light weight methods based on the collaboration optimization of population multiple physical field
Process flow as shown in Figure 1, include following processing step:
Step (1), the main ruler that high performance induction motor is provided according to the product specification and technical requirements of high performance induction motor
Very little and electromagnetic design overall goal；
Wherein, the product specification of high performance induction motor specifically includes that power, voltage, phase winding connection type, the number of phases and turns
The data such as speed, technical requirements specifically include that efficiency, power factor, the class of insulation, the method for operation, temperature margin and machinery are reliable
Property require etc..
Step (2), under conditions of the circle of holding three is constant, it is comprehensive to motor oscillating noise, harmonic field, thermic load and electricity
The considerations of load, carries out complicated screening and evaluation to the stator and rotor sructure of high performance induction motor, wherein high performance induction motor is determined
Rotor structure at least gives the selection of the rotor groove profile of high performance induction motor, slot cooperation, specific electric load and thermic load.Wherein three circle
It is constant, refer to that stator outer diameter, diameter of stator bore and rotor internal diameter cannot change.
Step (3), high performance induction motor in step (2) stator and rotor sructure screening result on the basis of, to efficient
The rotor topological structure of induction machine is selected, and determines the feasible scheme collection of high performance induction motor.Wherein, high performance induction
The selection of the rotor topological structure of motor should include stator grooved size, stator winding arrangement mode, slot shape of rotor size and
The selection of rotor bar material.
Step (4), step (3) determine high performance induction motor feasible program collection on the basis of, set using motor electromagnetic
It counts calculation procedure and calculates each electromagnetic parameter in high performance induction motor, select the electromagnetic design tentative programme of high performance induction motor.
It specifically includes that first according to rating data and fixed motor key dimension, to the stator winding line gauge of high performance induction motor
And every slot conductor number is designed calculating；Secondly, calculating each section magnetic potential of high performance induction motor using Magnetic Circuit Method, excitation is obtained
Reactance and magnetizing current；Again, each electromagnetic parameter of high performance induction motor is calculated, such as: rotor leakage reactance, rotor electricity
The parameters such as resistance, the weight of effective material and stator current；Finally to the working performance of high performance induction motor, such as stator copper loss turns
Sub- copper loss and core loss and starting performance, as starting current and starting torque are calculated.
Step (5), step (4) high performance induction motor magnetic circuit calculate result on, with the power of high performance induction motor because
The parameters such as number, starting torque, starting current turn to Bi-objective letter as constraint condition, with the efficiency and light weight of high performance induction motor
Number carries out efficiency to high performance induction motor using particle swarm optimization algorithm and light weight turns to biobjective scheduling, met simultaneously
The efficiency of high performance induction motor and the optimal solution set of lightweight requirements；
When carrying out cost optimization calculating to high performance induction motor using particle swarm optimization algorithm, optimized variable selection should be abided by
Follow the three constant principles of circle, optimized variable selects can stator winding line gauge size for high performance induction motor, every slot conductor number
And each size of rotor slot, objective function are the sum of the cost that high performance induction motor uses each material, calculate function are as follows:
Fitness function is to be respectively, η high performance induction electric efficiency,High performance induction motor power factor, TstIt is high
Imitate induction machine starting torque multiple and IstHigh performance induction motor starting currents multiple.
Other fees refer to the cost of cost and casing of high performance induction electric motor rotor aluminium casting etc..This four basic index conducts
Meet the standard limited value of high performance induction motor.Problem nonlinear for constraint condition, is solved using SUMT exterior penalty function.It is logical
It crosses and is introduced into penalty function, objective functionConstraint conditionIt is fused into augmented objective function, it can be punished
The trend of any pair of constraint violated forces unconstrained optimization towards close in feasible zone, finally will be with inequality constraints
Optimization design problem is adjusted to the unconstrained optimization design problem to augmented objective function, and augmented objective function constructs such as
Under.
Wherein ui(gi) it is unit jump function；r(k)For penalty factor, be one carried out by simple proportionate relationship it is incremental
Infinite sequence, 0 < r1< r2< ... < rk< rk+1< ....
Step (6), on the basis of the optimum results for the high performance induction motor that step (5) obtains, using Magnetic Circuit Method and electricity
Magnetic FEM parallel mode passes through the working characteristics and master of voltage equation and balance of efficiency equation to high performance induction motor
It wants operation data to be iterated calculating, if working characteristics and main operation data are met the requirements, goes to step (7) and continue to count
It calculates, if being unsatisfactory for requiring, return step (5) re-starts optimization and calculates；
It is above-mentioned that the working characteristics of high performance induction motor is transported with main using Magnetic Circuit Method and electromagnetic finite element parallel mode
Row data are iterated calculating, specific steps are as follows:
Step 6.1, the two-dimensional electromagnetic field finite element model for establishing high performance induction motor, as shown in Fig. 2, writing magnetic circuit simultaneously
Calculation procedure；
Step 6.2, with the voltage equation of high performance induction motorElectric current is carried out for constraint condition
Iterative calculation, whereinFor supply voltage added by the every phase of stator,The phase current flowed through by three-phase stator winding, R1It is fixed
The resistance of the every phase winding of son, x1eFor the every phase leakage reactance of stator,For the three-phase electromotive force incuded on stator winding；It obtains using magnetic
Road method calculates supply voltage U added by the every phase of stator1, high performance induction motor slip ratio s is calculated using Magnetic Circuit Method1。
Step 6.3, the power equation P with high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2For constraint condition progress
Revolutional slip iterative calculation, wherein PCu2For high performance induction rotor copper loss, s is the revolutional slip of high performance induction motor, PeFor height
Imitate the electromagnetic power of induction machine, PΩFor the mechanical loss of high performance induction rotor, PSFor the spuious damage of high performance induction motor
Consume P2For the mechanical output exported on high performance induction machine shaft, obtain calculating the every phase of stator using electromagnetic finite element method
Added supply voltage U2, high performance induction motor slip ratio s is calculated using electromagnetic finite element method2。
Step 6.4, comparison step 6.2 are adopted using the calculated working characteristics of Magnetic Circuit Method, main operation data and step 6.3
With the calculated working characteristics of electromagnetic finite element method, main operation data, if Magnetic Circuit Method and FInite Element meet simultaneouslyWith the requirement of high performance induction design of electrical motor, wherein U1For the stator obtained using Magnetic Circuit Method
Supply voltage added by every phase, U2Supply voltage added by the every phase of stator obtained for use electromagnetic finite element method, s1To use
The high performance induction motor slip ratio that Magnetic Circuit Method is calculated, s2For the high performance induction being calculated using electromagnetic finite element method
Motor slip ratio.ε1And ε2Respectively meet the residual error of iteration requirement.It then goes to step (7) and carries out the check of temperature field finite element, if
Magnetic Circuit Method and FInite Element only meetWithWhen being unsatisfactory for high efficiency motor design requirement, then return
It is calculated to step (5) re-optimization, if Magnetic Circuit Method and FInite Element do not meet simultaneouslyWithThen
Step 6.1 is returned to, electromagnetic finite element modeling and modification Magnetic Circuit Method program are re-started.
Step (7), on the basis of step (6) Electromagnetic Calculation result, using temperature field FInite Element to high performance induction
The temperature field of motor is calculated, if temperature is met the requirements, is gone to step (8) and is continued to calculate, if being unsatisfactory for requiring, return
Step (5) re-starts optimization and calculates.
A kind of model of temperature field FInite Element provided in an embodiment of the present invention is as shown in figure 3, excellent to high performance induction motor
Change the specific steps that result carries out temperature field check are as follows:
Step 7.1 establishes two-dimensional temperature field 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 etc. calculate high
Imitate the heat flow density q of induction machinev=P/V, wherein qvFor the heat flow density on high performance induction electric machine rotor winding and iron core, P
For the stator winding copper loss, rotor windings copper loss and iron loss of high performance induction motor, V is stator winding, rotor windings and iron core
Volume；Step 7.3, the casing surface coefficient of heat transfer that high performance induction motor is calculated according to the revolutional slip that electromagnetic finite element iteration goes out
α=9.73+14v0.62With air gap Equivalent Thermal Conductivities λeff=0.0019 η-2.9084·Re0.4614In(3.33361·η), wherein v is
The air velocity of high performance induction motor case heat dissipation between cog, roFor high performance induction rotor outer diameter, RiIt is fixed for high performance induction motor
Sub- internal diameter, Re are fluid Reynolds number；Step 7.4 has the temperature field that step 7.2 and 7.3 calculated results bring step 7.1 into
Limit the temperature field that high performance induction motor is calculated in meta-model.When the temperature results of high performance induction motor are unsatisfactory forWithIt is required that when then return step (5) re-optimization calculate, gone to if meeting the requirements
Step (8) continues to judge the lightweight of high performance induction motor, wherein Tw1For high performance induction machine winding observed temperature,
Tw2Temperature, T are calculated for high performance induction machine windingfe1For high performance induction electric machine iron core observed temperature, Tfe2For high performance induction motor
Iron core calculates temperature, ε3And ε4Respectively meet the residual error of iteration requirement.
Step (8), step (7) temperature field check meet high performance induction design of electrical motor require on the basis of, after optimization
Calculated weight carries out weight ratio calculating in the weight and electromagnetic design tentative programme of high performance induction motor, if weight ratio
Value meets given section material requirement, that is, determines that high performance induction motor electromagnetic designs overall plan, complete design requirement；If weight ratio
Value does not meet given section material requirement, then return step (5), structure and parameter to motor re-start optimization and calculate.
Calculated weight carries out difference calculating in the above-mentioned weight to motor after optimization and electromagnetic design tentative programme, main
Want weight should the copper weight comprising high performance induction motor, iron weight and aluminium weight.If weight ratio meets given section material requirement, meetWherein, G1For weight after the optimization of high performance induction motor, G0Weight before optimizing for high performance induction motor, ε5To set
Fixed threshold value determines that high performance induction motor electromagnetic designs overall plan；
If weight ratio does not meet given section material requirement, it is unsatisfactory forThen return to step (5) weight
New optimization calculates.
In conclusion the embodiment of the present invention is a kind of based on population-multiple physical field collaboration optimization high performance induction motor
Lightweight algorithm, is compared with the traditional method and has the advantage that
1, new design method is given, by way of multiple iteration, FEM calculation is combined with analytic formula.
The light-weighted target of high performance induction motor is realized, and the result after optimization is checked using multiple physical field, guarantees to calculate
As a result accuracy.
2, ultra-high efficient motor cost is optimized using intelligent optimization algorithm so that ultra-high efficient motor performance condition not
In the case where change, motor cost is effectively reduced.
3, it is checked using finite element after first Analytical Design, the parameters in design process are checked.Reduce meter
Generated error when calculation, the final result accuracy are higher.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (9)
1. a kind of high performance induction motor light weight method based on the collaboration optimization of population multiple physical field characterized by comprising
Step 1 provides the size of high performance induction motor according to the product specification and technical requirements of high performance induction motor and electromagnetism is set
Count overall goal；
Step 2, holding three circle it is constant under conditions of, according to motor oscillating noise, harmonic field, thermic load and electric load
Consider, the stator and rotor sructure of high performance induction motor is screened and evaluated；
Step 3, high performance induction motor in step 2 stator and rotor sructure screening result on the basis of, to high performance induction motor
Rotor topological structure selected, determine the feasible scheme collection of high performance induction motor；
Step 4, step 3 determine high performance induction motor feasible program collection on the basis of, using motor electromagnetic design calculate journey
Sequence calculates each electromagnetic parameter in high performance induction motor, selectes high performance induction motor electromagnetic Design Fundamentals scheme；
Step 5, in the calculated high performance induction motor of step 4 on the basis of the result of each electromagnetic parameter, with high performance induction electricity
The power factor of machine, starting torque, starting current parameter are turned to as constraint condition with the efficiency and light weight of high performance induction motor
Two-objective programming carries out efficiency to high performance induction motor using particle swarm algorithm and light weight turns to biobjective scheduling, obtains simultaneously
Meet the efficiency of high performance induction motor and the optimal solution set of lightweight requirements；
Step 6, on the basis of the optimal solution set for the high performance induction motor that step 5 obtains, it is limited using Magnetic Circuit Method and electromagnetic field
First parallel mode by voltage equation and balance of efficiency equation to the working characteristics of high performance induction motor and operation data into
Row iteration calculates, if working characteristics and operation data are met the requirements, goes to step 7 and continues to calculate, if being unsatisfactory for requiring, return
Step 5 is returned, optimization is re-started and calculates；
Step 7, on the basis of the calculated result of the working characteristics of step 6 high performance induction motor and operation data, using temperature field
FInite Element carries out calculation and check to the temperature field of high performance induction motor and goes to step 8 if temperature field is met the requirements and continue to count
It calculates, if being unsatisfactory for requiring, return step 5 re-starts optimization and calculates；
Step 8, the weight for calculating each element in the weight and electromagnetic design tentative programme of the high performance induction motor after optimization
Ratio completes the electromagnetic design overall plan of high performance induction motor if weight ratio meets given section material requirement；If weight
Amount ratio does not meet given section material requirement, then return step 5, structure and parameter to motor re-start optimization and calculate.
2. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: the product specification of high performance induction motor includes: power, voltage, phase winding connection type, phase in the step 1
Number, revolving speed, power factor and efficiency data, technical requirements include: efficiency, power factor, the class of insulation, the method for operation, temperature rise
Limit and Mechanical Reliability requirement.
3. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: in the step 2, the stator and rotor sructure of high performance induction motor include high performance induction motor rotor groove profile,
Slot cooperation, specific electric load and thermic load.
4. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: in the step 3, the selection of the rotor topological structure of high performance induction motor include stator groove profile, stator around
The selection of group arrangement mode, slot shape of rotor and rotor bar material.
5. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: calculating each electromagnetic parameter in high performance induction motor using motor electromagnetic design calculation procedure in the step 4
Include: according to rating data determine high performance induction motor stator winding line gauge and every slot conductor number；It is calculated using Magnetic Circuit Method high
Imitate each section magnetic potential of induction machine；Calculate each electromagnetic parameter of high performance induction motor；Work to high performance induction motor
Performance and starting performance are calculated.
6. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: in the step 5, it is excellent when carrying out cost optimization calculating to high performance induction motor using particle swarm optimization algorithm
Change variables choice and follow the three constant principles of circle, optimized variable is selected as the stator winding line gauge size, every of high performance induction motor
Slot conductor number and each size of rotor slot, objective function are the sum of the cost that high performance induction motor uses each material.
7. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: passing through voltage equation and efficiency using Magnetic Circuit Method and electromagnetic finite element parallel mode in the step 6
Equilibrium equation is iterated calculating, specific steps to the working characteristics and operation data of high performance induction motor are as follows:
Step 6.1 establishes two-dimensional electromagnetic field finite element model after the optimization of high performance induction motor, writes magnetic circuit calculation procedure；
Step 6.2, with the voltage equation of high performance induction motorElectric current iteration meter is carried out for constraint condition
It calculates, whereinFor supply voltage added by the every phase of stator, the phase current that I is flowed through by three-phase stator winding, R1For the every phase of stator
The resistance of winding, x1eFor the every phase leakage reactance of stator,For the three-phase electromotive force incuded on stator winding；
Step 6.3, the power equation P with high performance induction motorCu2/ s=Pe=PCu2+PΩ+PS+P2Slip is carried out for constraint condition
Rate iterative calculation, wherein PCu2For high performance induction rotor copper loss, s is the revolutional slip of high performance induction motor, PeEfficiently to feel
Answer the electromagnetic power of motor, PΩFor the mechanical loss of high performance induction rotor, PSFor the stray loss of high performance induction motor, P2
For the mechanical output exported on high performance induction machine shaft；
Step 6.4, comparison step 6.2 calculate the working characteristics, operation data and step of high performance induction motor using Magnetic Circuit Method
6.3 calculate the working characteristics of high performance induction motor, operation data using electromagnetic finite element methods, if Magnetic Circuit Method and limited
First method meets simultaneouslyWith the requirement of high performance induction design of electrical motor, wherein U1For using magnetic circuit
Supply voltage added by the every phase of the stator that method obtains, U2It is powered up by the every phase of stator obtained using electromagnetic finite element method
Voltage, s1For the high performance induction motor slip ratio being calculated using Magnetic Circuit Method, s2To be calculated using electromagnetic finite element method
The high performance induction motor slip ratio arrived, ε1And ε2Respectively meet the residual error of iteration requirement；
It then goes to step 7 and carries out the check of temperature field finite element, if Magnetic Circuit Method and FInite Element only meetWithWhen being unsatisfactory for high efficiency motor design requirement, then the calculating of step 5 re-optimization is returned to, if Magnetic Circuit Method and finite element
Method does not meet simultaneouslyWithThen return to step 6.1, re-start electromagnetic finite element modeling and
Modify Magnetic Circuit Method program.
8. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: carrying out calculation and check using temperature field of the temperature field FInite Element to high performance induction motor in the step 7
Specific steps are as follows:
Step 7.1 establishes two-dimensional temperature field 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 losses computation high performance induction
The heat flow density q of motorv=P/V, wherein qvFor the heat flow density on high performance induction electric machine rotor winding and iron core, P is efficient
Stator winding copper loss, rotor windings copper loss and the iron loss of induction machine, V are the volume of stator winding, rotor windings and iron core；
Step 7.3, the casing surface coefficient of heat transfer α that high performance induction motor is calculated according to the revolutional slip that electromagnetic finite element iteration goes out
=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 the air velocity of high performance induction motor case heat dissipation between cog, roFor high performance induction rotor outer diameter, RiEfficiently to feel
Motor stator internal diameter is answered, Re is fluid Reynolds number；
Step 7.2 and 7.3 calculated results are brought into the temperature field finite element model of step 7.1 and calculate height by step 7.4
The temperature field for imitating induction machine, when the temperature field of high performance induction motor is unsatisfactory forWith
It is required that when, then 5 re-optimization of return step calculates, wherein Tw1For high performance induction machine winding observed temperature, Tw2Efficiently to feel
Machine winding is answered to calculate temperature, Tfe1For high performance induction electric machine iron core observed temperature, Tfe2Temperature is calculated for high performance induction electric machine iron core
Degree, ε3And ε4Respectively meet the residual error of iteration requirement；
If the temperature field of high performance induction motor meetsWithIt is required that then go to step 8 after
It is continuous that the lightweight of high performance induction motor is judged.
9. the high performance induction motor light weight method according to claim 1 based on the collaboration optimization of population multiple physical field,
It is characterized by: in the step 8, it is each in the weight and electromagnetic design tentative programme of the high performance induction motor after calculating optimization
The weight ratio of a element, if weight ratio meets given section material requirement, the electromagnetic design for completing high performance induction motor is total
Body scheme, comprising:
The copper weight, iron weight and aluminium weight for obtaining high performance induction motor, as its difference meetsWherein, G1Efficiently to feel
Weight after answering motor to optimize, G0Weight before optimizing for high performance induction motor, the then electromagnetic design for completing high performance induction motor are overall
Scheme.
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