CN108647397A - High speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition - Google Patents
High speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition Download PDFInfo
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- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
An embodiment of the present invention provides the high speed rotor of motor Topology Optimization Methods based on PSO algorithms under a kind of multi-constraint condition, including：Provide the electromagnetic design parameter of motor；Rotor jacket structure is designed, respective sheath material is selected；Initial calculation scheme is determined by original size, with can optimize topology and its boundary；Calculate the limit Design section that thermal stress obtains jacket thickness with mechanical stress；The equivalent model of different rotor topology is determined in conjunction with motor electromagnetic characteristic；Optimization design based on efficiency is carried out using intelligent algorithm and the method for flux coupled；Result of calculation is refined using electromagnetic finite element method, checks the reasonability of equivalent topologies；By the Temperature Distribution under optimal case, the validity of topology distribution is examined；To high-speed electric expreess locomotive runnability after optimization and motor maximum temperature and original scheme comparative analysis.The present invention realizes the high-performance electromagnetic requirements under high speed operation of motor, reduces motor maximum temperature, stress design requirement when meeting rotor high-speed cruising.
Description
Technical field
The present invention relates under energy-saving of motor system technical field more particularly to a kind of multi-constraint condition based on PSO algorithms
High speed rotor of motor Topology Optimization Method.
Background technology
PSO (Particle Swarm Optimization, particle cluster algorithm) belongs to one kind of evolution algorithm, and simulation
Annealing algorithm is similar, it is also to find optimal solution from RANDOM SOLUTION by iteration, the quality of solution is evaluated by fitness,
It by follow current search to optimal value find global optimum.This algorithm is easy with its realization, precision is high, convergence is fast
The advantages that cause the attention of academia, and its superiority is illustrated in solving practical problems.Particle cluster algorithm is a kind of
Parallel algorithm.The advantage of PSO is simple easy to implement and needs to adjust without many parameters.It is widely used to letter at present
The application field of number optimization, neural metwork training, fuzzy system control and other genetic algorithms.
Topological optimization is to be distributed as optimization object with material, can be in the design of uniformly distributed material by topological optimization
Best distribution scheme is found in space.
High-speed permanent magnet motor has the characteristics that rotating speed is high, power density is high, has highly important work in many key areas
With.Usual rotor outer ring can be cased with sheath, to resist high rotating speed caused by surface centrifugal force it is excessive, different jacket thickness can produce
Raw different vortex, and then corresponding heat problem can be brought.
In order to realize the efficient application to high-speed electric expreess locomotive, it is necessary to design the high effect of high-speed electric expreess locomotive under a kind of multi-constraint condition
Topological smart distribution method is based on PSO algorithms, and topological optimization is carried out to the material distribution of high speed rotor of motor.
Invention content
The embodiment provides the high speed rotor of motor topological optimizations based on PSO algorithms under a kind of multi-constraint condition
Method, to solve the problems in above-mentioned background technology.
To achieve the goals above, this invention takes following technical solutions：
High speed rotor of motor topological optimization based on PSO algorithms under a kind of multi-constraint condition that the embodiment of the present invention provides
Method, which is characterized in that including：
Step 1：It is required according to the actual operating mode of motor, provides the electromagnetic design target component of motor and basic knot
Structure determines optimization object function；
Step 2：In the case of ensureing that motor fundamental performance parameter is constant, the basic structure and material of sheath are determined；
Step 3：On the basis of initial model and calculating target, ensures that multi-constraint condition is constant, calculated, obtained using electromagnetism
Topology and boundary condition can be optimized, and calculate the stress optimization section of sheath according to thermal stress and mechanical stress；
Step 4：According to the electromagnetic design target component and basic structure and the basic structure and material of the sheath
Material, the equivalent model of different rotor topology is determined in conjunction with motor electromagnetic characteristic, calculated based on the magnetic circuit for improving PSO algorithms,
And obtain the optimal objective in optimization section by different particle populations iteration；
Step 5：The reasonability of result and equivalent model that magnetic circuit calculates is checked using electromagnetic finite element method, verifies magnetic circuit
Calculating follows precision with actual result, continues to calculate if meeting required precision, otherwise returns to the magnetic circuit calculating and counts again
It calculates；
Step 6：Calculation and check is carried out to motor temperature using temperature field FInite Element, examines the validity of topology distribution,
To high-speed electric expreess locomotive runnability after optimization and motor maximum temperature and original scheme comparative analysis.
Preferably, described to be required according to the actual operating mode of motor, provide the electromagnetic design target component of motor with
Basic structure determines optimization object function, including：
The actual operating mode requires to include：The working time of motor and corresponding torque and rotating speed；
The electromagnetic design target component includes：Power of motor, efficiency under different rotating speeds, power factor, starting torque
And braking moment；
The basic structure includes：Motor three justifies size, rotor grooved size, winding configuration and the type of cooling；
The optimization object function is the majorized function using efficiency as target.
Preferably, in the case that the guarantee motor fundamental performance parameter is constant, basic structure, the material of sheath are determined
With possible thickness section, including：
In the case of ensureing that motor fundamental performance parameter is constant, basic structure, material and the possible thickness area of sheath are determined
Between, tensile stress when considering high speed operation of motor suffered by rotor surface easily causes the shield of non-reversible deformation, different-thickness
The sheath for being cased with different electromagnetic responses and different topology has different inhibiting effect to vortex；
The fundamental performance parameter includes：Power factor, starting current, starting torque, specific electric load and thermic load；
The tensile stress of rotor surface is larger when high speed operation of motor, and the permanent magnet for easily causing outer surface is detached from or rotor notch
Rupture, material, thickness and the structure of sheath can cause rotor different degrees of eddy-current loss then to cause rotor heating.
Preferably, described on the basis of initial model and calculating target, ensure that multi-constraint condition is constant, using electromagnetism meter
It calculates, topology and boundary condition can be optimized by obtaining, and the stress optimization section of sheath, packet are calculated according to thermal stress and mechanical stress
It includes：
The initial model refers to the electric machine structure parameter before being not optimized, and the optimization object function is described
Calculate the mathematical expression of target；
The guarantee multi-constraint condition is constant to include：Guarantee power factor, starting torque and starting current are basically unchanged；
Weigh the influence to optimization aim and remaining performance, chooses the stator slot parameter, rotor slot parameter, winding line gauge
With magnet size to dependent variable, and it is calculated according to magnetic circuit and described section is optimized to dependent variable；
The stress optimization section of the sheath, on the basic structure of the sheath, the basis of material and possible thickness section
On, it is calculated according to thermal stress and mechanical stress.
Preferably, it is described according to the basic structure of sheath, material and possible thickness section and it is described can Optimal Parameters
With can optimize section, obtain equivalent model of the sheath of motor various pieces and different topology in magnetic circuit calculating, be based on
The magnetic circuit for improving PSO algorithms calculates, and the optimal objective in optimization section is obtained by different particle populations iteration, including：
The sheath of different topology is participated in magnetic Circuit Design, determines the optimization mesh under multiple constraintss of step 3
Mark improves since randomness causes the local optimum problem of solving result in PSO algorithms, carries out magnetic circuit iteration meter on this basis
It calculates, the optimal objective under a variety of constraints is found using the optimizing advantage of optimization algorithm.
Preferably, the reasonability that result and equivalent model that magnetic circuit calculates are checked using electromagnetic finite element method,
The calculating of verification magnetic circuit follows precision with actual result, continues to calculate if meeting the requirements, and otherwise returns to the magnetic circuit and calculates weight
It is new to calculate, including：
Using electromagnetic finite element method, check during Magnetic Circuit Method calculates copper loss, iron loss, mechanical loss, efficiency and power because
Several accuracys ensures that the error of two kinds of computational methods of the electromagnetic finite element method and the Magnetic Circuit Method meets the requirements, and school
Reasonability of the sheath of core different topology in the equivalent model that magnetic circuit calculates.
Preferably, described that calculation and check is carried out to motor temperature using temperature field FInite Element, examine topology distribution
Validity, to high-speed electric expreess locomotive runnability after optimization and motor maximum temperature and original scheme comparative analysis, including：
Using temperature field FInite Element, to checking qualified equivalent model in step 5 into trip temperature FEM calculation, if electric
The temperature value of each component then carries out sheath stress analysis in temperature limits in machine, otherwise goes in the step 3 and redefines
The stress optimization section of sheath.
The embodiment of the present invention is by devising one kind it can be seen from the technical solution that embodiments of the invention described above provide
High speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition, the unconventional component in motor is carried out etc.
Effect processing carries out the optimization design of high-speed electric expreess locomotive, reaches guarantor particle cluster algorithm in such a way that the calculating of motor magnetic circuit is combined
Hold the target of the efficiency and power factor optimization design under motor basic performance permanence condition.Rotor when being designed for high-speed electric expreess locomotive
Jacket structure is difficult to determining problem and proposes solution, accelerates speed of searching optimization.The front and back result of calculation of optimization is passed through
Electromagnetic finite element method verifies, and using temperature field and sheath stress calculating results as motor OVERALL OPTIMIZA-TION DESIGN FOR interpretation of result.
The present invention can realize the optimization design to high-speed permanent magnet motor.
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.
Description of the drawings
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 having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the high speed rotor of motor topology based on PSO algorithms under a kind of multi-constraint condition provided in an embodiment of the present invention
The process chart of optimization method；
Fig. 2 is the high speed rotor of motor topology based on PSO algorithms under a kind of multi-constraint condition provided in an embodiment of the present invention
The two-dimensional electromagnetic field solving model figure of the high-speed permanent magnet motor of optimization method；
Fig. 3 is the high speed rotor of motor topology based on PSO algorithms under a kind of multi-constraint condition provided in an embodiment of the present invention
The two-dimensional temperature field solving model figure of the high-speed permanent magnet motor of optimization method.
Specific implementation mode
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 is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the present invention arranges
It refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition to take leave " comprising "
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 any cell of one or more associated list items and all combines.
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 terminology) there is meaning identical with the general understanding of the 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, will not be with idealizing or the meaning of too formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one
An embodiment of the present invention provides the high speed rotor of motor topological optimization sides based on PSO algorithms under a kind of multi-constraint condition
Method, to realize the optimization design of high-speed permanent magnet motor.
High speed rotor of motor topological optimization side based on PSO algorithms under a kind of multi-constraint condition provided in an embodiment of the present invention
The process chart of method is as shown in Figure 1, can specifically include following steps：
Step 1：It is required according to motor actual operating mode, provides the electromagnetic design target component and basic structure of motor,
Determine optimization object function.
Actual operating mode includes：Motor working time and corresponding torque, rotating speed.
Electromagnetic design target component includes：Power of motor, efficiency under different rotating speeds, power factor, starting torque, braking
Torque.
Basic structure includes：Motor three justifies size, rotor grooved size, winding configuration, the type of cooling.Wherein, it needs true
It protects motor three and justifies size constancy, is i.e. stator outer diameter, diameter of stator bore and rotor internal diameter size cannot change.
Optimization object function is using efficiency as target.
Step 2：In the case of ensureing that motor fundamental performance parameter is constant, rotor surface when considering high speed operation of motor
Suffered tensile stress easily causes non-reversible deformation, the sheath of different-thickness has different electromagnetic responses, the sheath of different topology
There is the problems such as different inhibiting effect to vortex, determines sheath basic structure and material.
Wherein, basic performance includes：Power factor, starting current, starting torque, specific electric load and thermic load.
In addition, the tensile stress of rotor surface is larger when high speed operation of motor, the permanent magnet for easily causing outer surface is detached from or turns
Pilot trench mouth ruptures, however the material of sheath, thickness and structure can cause it different degrees of eddy-current loss then to cause rotor
Fever.
Step 3：In the electromagnetic design target component and basic structure and optimization object function of the motor that step 1 provides
On the basis of, the constraintss such as guarantee power factor, starting torque, starting current are basically unchanged, and calculating determination by electromagnetism can be excellent
Change topology and boundary condition, the wherein optimization section of sheath on the basis of step 2 determines sheath basic structure and material, according to
Thermal stress is calculated with mechanical stress.Topology can be optimized and refer to that the structural parameters that can optimize, boundary condition refer to corresponding to
Parameter area.
Topology can be optimized wherein, changing stator slot shape parameter, rotor slot parameter, winding line gauge, magnet size can be to electricity
Machine performance produces bigger effect, and tradeoff, which is chosen, influences optimization aim with remaining performance to dependent variable, is sought according to magnetic circuit calculating
Section is optimized to dependent variable.
According to step 1 and 2 topology design, different equivalent mathematical models is obtained, determine the optimization for the purpose of efficiency
Target and constraints calculated based on the motor magnetic circuit for improving PSO algorithms, are optimized by different particle populations iteration
Optimal objective in section；Wherein, the sheath of different topology is participated in magnetic Circuit Design, determines multiple constraints in step 3
Under the conditions of optimization aim, improve in PSO algorithms and the local optimum problem of solving result caused due to randomness, on this basis
Magnetic circuit iterative calculation is carried out, the optimal objective under a variety of constraints is found using the optimizing advantage of optimization algorithm.
Step 5：On the basis of the optimization that step 4 obtains, the calculating knot that electromagnetic finite element method checks Magnetic Circuit Method is reused
Fruit and the equivalent reasonability of mathematical model, verification magnetic circuit is calculated follows precision with actual result, if can meet the requirements, turns
Continue to calculate to step 5, otherwise return to step 4 re-starts optimization and calculates；Wherein, had using the higher electromagnetic field of computational accuracy
The first method of limit checks copper loss, iron loss, mechanical loss, efficiency, the accuracy of power factor during magnetic circuit calculates, and ensures two kinds of computational methods
Error meet the requirements, check different sheath topologys magnetic circuit calculating in equivalent model reasonability.
Step 6：On the basis of step 5 is verified by electromagnetic finite element, using temperature field FInite Element to motor temperature
Degree carries out calculation and check and carries out sheath stress analysis if the temperature value of each component is in temperature limits in motor, otherwise go to
Step 3 redefines stress optimization section, wherein to checking qualified equivalent model in step 5 into trip temperature FEM calculation,
And by hot result of calculation for the sheath Stress calculation under high speed rotation, with original scheme contrast verification effect of optimization.
Embodiment two
This embodiment offers the high speed rotor of motor Topology Optimization Method based on PSO algorithms under a kind of multi-constraint condition,
Its specific implementation mode is as follows：
This embodiment offers a kind of two-dimensional electromagnetic field solving model of high-speed permanent magnet motor as shown in Fig. 2, the figure shows
Use the motor electromagnetic model schematic after finite element method calculation optimization.
This embodiment offers a kind of two-dimensional temperature field solving model of high-speed permanent magnet motor as shown in figure 3, the figure shows
By obtained loss value in described Fig. 2 for calculating electric motor temperature field, obtained model schematic.
Compared with prior art, the present invention has the following advantages：
(1) new design method is given, the unconventional component in motor is subjected to equivalent process, passes through particle cluster algorithm
The mode being combined is calculated with motor magnetic circuit, carries out the optimization design of high-speed electric expreess locomotive, reaches and keeps the constant item of motor basic performance
The target of efficiency and power factor optimization design under part.
(2) rotor jacket structure is difficult to determining problem and proposes solution when being directed to high-speed electric expreess locomotive design, accelerates
Speed of searching optimization.
(3) it calculates result using the front and back road of optimization to verify by electromagnetic finite element method, and with temperature field and sheath stress
Result of calculation is as motor OVERALL OPTIMIZA-TION DESIGN FOR interpretation of result.Reduce generated error, the final result when calculating
Accuracy higher.
In conclusion the embodiment of the present invention is turned by the high-speed electric expreess locomotive based on PSO algorithms under a kind of multi-constraint condition of design
Unconventional component in motor is carried out equivalent process, is calculated by particle cluster algorithm and motor magnetic circuit by subtopology optimization method
The mode being combined carries out the optimization design of high-speed electric expreess locomotive, reaches and keeps the efficiency under motor basic performance permanence condition and work(
The target of rate factor optimization design.Rotor jacket structure is difficult to determining problem and proposes solution party when being designed for high-speed electric expreess locomotive
Case accelerates speed of searching optimization.The front and back result of calculation of optimization is verified by electromagnetic finite element method, and with temperature field and sheath
Stress calculating results are as motor OVERALL OPTIMIZA-TION DESIGN FOR interpretation of result.Error of the present invention is small, accuracy is high, realizes at a high speed forever
The optimization design of magneto.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer 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 that separating component illustrates may or may not be physically separated, the component shown as unit can be or
Person may not be physical unit, you can be located at a place, or may be distributed over multiple network units.It can root
According to actual need that some or all of module therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (7)
1. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under a kind of multi-constraint condition, which is characterized in that including：
Step 1：It is required according to the actual operating mode of motor, provides the electromagnetic design target component and basic structure of motor, really
Determine optimization object function；
Step 2：In the case of ensureing that motor fundamental performance parameter is constant, the basic structure and material of sheath are determined；
Step 3：On the basis of initial model and calculating target, ensures that multi-constraint condition is constant, calculated using electromagnetism, obtaining can be excellent
Change topology and boundary condition, and calculates the stress optimization section of sheath according to thermal stress and mechanical stress；
Step 4：According to the electromagnetic design target component and basic structure and the basic structure and material of the sheath, knot
The equivalent model that motor electromagnetic characteristic determines different rotor topology is closed, calculate based on the magnetic circuit for improving PSO algorithms, and pass through
Different particle populations iteration obtain the optimal objective in optimization section；
Step 5：The reasonability of result and equivalent model that magnetic circuit calculates is checked using electromagnetic finite element method, verification magnetic circuit calculates
Precision is followed with actual result, continues to calculate if meeting required precision, the magnetic circuit calculating is otherwise returned and recalculates；
Step 6：Calculation and check is carried out to motor temperature using temperature field FInite Element, the validity of topology distribution is examined, to excellent
High-speed electric expreess locomotive runnability and motor maximum temperature and original scheme comparative analysis after change.
2. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
It is characterized in that, it is described to be required according to the actual operating mode of motor, provide the electromagnetic design target component of motor and basic knot
Structure determines optimization object function, including：
The actual operating mode requires to include：The working time of motor and corresponding torque and rotating speed；
The electromagnetic design target component includes：Power of motor, efficiency, power factor, starting torque under different rotating speeds and system
Dynamic torque；
The basic structure includes：Motor three justifies size, rotor grooved size, winding configuration and the type of cooling；
The optimization object function is the majorized function using efficiency as target.
3. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
It is characterized in that, in the case that the guarantee motor fundamental performance parameter is constant, determines the basic structure of sheath, material and feasible
Thickness section, including：
In the case of ensureing that motor fundamental performance parameter is constant, basic structure, material and the possible thickness section of sheath are determined, it is comprehensive
Closing tensile stress when considering high speed operation of motor suffered by rotor surface easily causes the sheath of non-reversible deformation, different-thickness to have not
The sheath of same electromagnetic response and different topology has different inhibiting effect to vortex；
The fundamental performance parameter includes：Power factor, starting current, starting torque, specific electric load and thermic load；
The tensile stress of rotor surface is larger when high speed operation of motor, and the permanent magnet for easily causing outer surface is detached from or rotor notch is broken
It splits, material, thickness and the structure of sheath can cause rotor different degrees of eddy-current loss then to cause rotor heating.
4. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
It is characterized in that, it is described on the basis of initial model and calculating target, ensure that multi-constraint condition is constant, is calculated, obtained using electromagnetism
Go out to optimize topology and boundary condition, and calculates the stress optimization section of sheath according to thermal stress and mechanical stress, including：
The initial model refers to the electric machine structure parameter before being not optimized, and the optimization object function is the calculating
The mathematical expression of target；
The guarantee multi-constraint condition is constant to include：Guarantee power factor, starting torque and starting current are basically unchanged；
Weigh influence to optimization aim and remaining performance, chooses the stator slot parameter, rotor slot parameter, winding line gauge and forever
Magnet size to dependent variable, and be calculated according to magnetic circuit and described section optimized to dependent variable；
The stress optimization section of the sheath, on the basis of the basic structure of the sheath, material and possible thickness section, root
It is calculated according to thermal stress and mechanical stress.
5. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
Be characterized in that, it is described according to the basic structure of sheath, material and possible thickness section and it is described can Optimal Parameters with can be excellent
Change section, obtain equivalent model of the sheath of motor various pieces and different topology in magnetic circuit calculating, carries out based on improving PSO
The magnetic circuit of algorithm calculates, and the optimal objective in optimization section is obtained by different particle populations iteration, including：
The sheath of different topology is participated in magnetic Circuit Design, the optimization aim under multiple constraintss of step 3 is determined, changes
Into, since randomness causes the local optimum problem of solving result, progress magnetic circuit iterative calculation on this basis is sharp in PSO algorithms
The optimal objective under a variety of constraints is found with the optimizing advantage of optimization algorithm.
6. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
It is characterized in that, the reasonability that result and equivalent model that magnetic circuit calculates are checked using electromagnetic finite element method verifies magnetic
Road calculating follows precision with actual result, continues to calculate if meeting the requirements, and otherwise returns to the magnetic circuit calculating and recalculates,
Including：
Using electromagnetic finite element method, copper loss during Magnetic Circuit Method calculates, iron loss, mechanical loss, efficiency and power factor are checked
Accuracy ensures that the error of two kinds of computational methods of the electromagnetic finite element method and the Magnetic Circuit Method meets the requirements, and checks not
Reasonability of the sheath of homeomorphism in the equivalent model that magnetic circuit calculates.
7. the high speed rotor of motor Topology Optimization Method based on PSO algorithms under multi-constraint condition according to claim 1,
It is characterized in that, described carries out calculation and check using temperature field FInite Element to motor temperature, examines the validity of topology distribution,
To high-speed electric expreess locomotive runnability after optimization and motor maximum temperature and original scheme comparative analysis, including：
Using temperature field FInite Element, to checking qualified equivalent model in step 5 into trip temperature FEM calculation, if in motor
The temperature value of each component then carries out sheath stress analysis in temperature limits, otherwise goes in the step 3 and redefines sheath
The stress optimization section.
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| CN110728058A (en) * | 2019-10-15 | 2020-01-24 | 北京交通大学 | Amorphous alloy motor full-working-condition optimization design method related to magnetic flux density saturation |
| CN111859782A (en) * | 2020-06-17 | 2020-10-30 | 西安交通大学 | Steam turbine bolt heating analysis method based on genetic particle swarm optimization |
| CN111859782B (en) * | 2020-06-17 | 2023-04-28 | 西安交通大学 | Steam turbine bolt heating analysis method based on genetic particle swarm optimization |
| CN113515843A (en) * | 2021-04-19 | 2021-10-19 | 南昌航空大学 | Permanent magnet motor rotor strength optimization design method based on multi-dimensional visualization |
| CN114861332A (en) * | 2022-07-05 | 2022-08-05 | 清华大学 | Topological structure and parameter layering optimization method of electric drive system of dual-motor transmission |
| CN115577599A (en) * | 2022-11-17 | 2023-01-06 | 东南大学 | Motor topology optimization method based on component method |
| CN115577599B (en) * | 2022-11-17 | 2023-04-07 | 东南大学 | Motor topology optimization method based on component method |
| CN118013867A (en) * | 2024-04-09 | 2024-05-10 | 西北工业大学 | Large-power span variable-speed underwater propulsion motor, design method thereof and underwater equipment |
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