CN108920761A - A kind of electromagnetic vibration noise emulated computation method of switched reluctance machines - Google Patents
A kind of electromagnetic vibration noise emulated computation method of switched reluctance machines Download PDFInfo
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- CN108920761A CN108920761A CN201810568392.XA CN201810568392A CN108920761A CN 108920761 A CN108920761 A CN 108920761A CN 201810568392 A CN201810568392 A CN 201810568392A CN 108920761 A CN108920761 A CN 108920761A
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- 238000010586 diagram Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The present invention relates to a kind of electromagnetic vibration noise emulated computation methods of switched reluctance machines, include the following steps：1) electromagnetic force for acting on two-dimentional stator electromagnet grid is obtained；2) electromagnetic force for acting on three-dimensional stator electromagnet grid is obtained；3) it obtains and considers the anisotropic motor modal parameter of stator；4) electromagnetic force for acting on three-dimensional stator structure is obtained；5) electric and magnetic oscillation of motor is obtained with mode superposition method；6) electromagnetic noise of motor is obtained with boundary element method.Compared with prior art, the mentioned method of the present invention is suitable for the prediction of switched reluctance machines vibration noise, saves time and cost.
Description
Technical field
The present invention relates to a kind of electromagnetic vibration noise calculation methods, more particularly, to a kind of electromagnetic vibration of switched reluctance machines
Moving noise emulated computation method.
Background technique
Currently, the driving motor of new-energy automobile is mainly magneto, and switched reluctance machines have speed-regulating range width,
The advantages that structure is simple, at low cost, strong robustness, becomes one of candidate of driving motor for electric automobile.However, switching magnetic-resistance is electric
The double-salient-pole structure and unique power supply mode of machine cause exciting current to have pulse feature, cause biggish vibration noise.This
Defect causes the application of switched reluctance machines to be very limited, and it is therefore necessary to study its vibration noise characteristic.
The accurate vibration noise for obtaining switched reluctance machines is the premise for analyzing vibration noise characteristic, and current switching magnetic-resistance
The analytic method of motor oscillating noise is not yet mature, and FInite Element relative test is time-consuming short and at low cost.Therefore, FInite Element becomes
The common method of switched reluctance machines vibration noise is calculated at present.But current switched reluctance machines researcher is using electric and magnetic oscillation
It during simulation of noise, will not apply distributed electrical magnetic force, only be loaded in the form of concentrated force, lead to vibration noise
Simulation result and test result error are larger.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of switched reluctance machines
Electromagnetic vibration noise emulated computation method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of electromagnetic vibration noise emulated computation method of switched reluctance machines, includes the following steps：
1) electromagnetic force for acting on two-dimentional stator electromagnet grid is obtained；
2) electromagnetic force for acting on three-dimensional stator electromagnet grid is obtained；
3) it obtains and considers the anisotropic motor modal parameter of stator；
4) electromagnetic force for acting on three-dimensional stator structure is obtained；
5) electric and magnetic oscillation of motor is obtained with mode superposition method；
6) electromagnetic noise of motor is obtained with boundary element method.
The step 1) specifically includes following steps：
11) the two-dimensional geometry model of motor is established；
12) it determines material, build circuit and coil grouping；
13) operating condition and boundary condition are set；
14) electromagnetic grid, setting analysis step-length are divided；
15) seek acting on the distributed electrical magnetic force of two-dimentional stator electromagnet grid.
The step 2) specifically includes following steps：
21) it divides three-dimensional stator electromagnet grid and assigns axial length；
22) the export step number of electromagnetic force is set；
23) derivative ac-tion is in the distributed electrical magnetic force of three-dimensional stator electromagnet grid.
The step 3) specifically includes following steps：
31) 3-D geometric model of motor is established；
32) stator anisotropic material parameter and other components isotropic material parameters are assigned；
33) boundary condition is arranged in grid division；
34) modal parameter of motor is solved.
The step 4) includes：The distributed electrical magnetic force that will act on three-dimensional stator electromagnet grid is transferred to three-dimensional stator
The tooth surface of structure.
The step 5) specifically includes following steps：
51) electromagnetic force that will act on three-dimensional stator carries out FFT transform；
52) electric and magnetic oscillation of switched reluctance machines is calculated with mode superposition method.
The step 6) specifically includes following steps：
61) acoustic boundary member grid and site grid are established；
62) stator surface vibration is transferred to acoustic boundary member grid；
63) electromagnetic noise of switched reluctance machines is calculated with boundary element method.
Compared with prior art, the present invention provides a kind of sides of switched reluctance machines electromagnetic vibration noise simulation calculation
Method can rapidly and accurately carry out switched reluctance machines electromagnetic vibration noise simulation calculation with method provided by the invention, be
The electromagnetic vibration noise analysis and optimization of switched reluctance machines lays the foundation.
Detailed description of the invention
Fig. 1 is a kind of flow chart of switched reluctance machines electromagnetic vibration noise emulated computation method；
Fig. 2 is the circuit diagram of 12/8 pole switching reluctance motor of three-phase；
Fig. 3 is the distributed electrical magnetogram of two-dimentional stator electromagnet grid；
Fig. 4 is the distributed electrical magnetogram of three-dimensional stator electromagnet grid；
Fig. 5 is the mode schematic diagram of motor；
Fig. 6 is the distributed electrical magnetogram of three-dimensional stator tooth surface；
Fig. 7 is the electric and magnetic oscillation cloud atlas of switched reluctance machines；
Fig. 8 is the electromagnetic sound radiation diagram of switched reluctance machines.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment
For certain 12/8 pole switching reluctance motor of type three-phase, implementation test of the invention is carried out.
Fig. 1 provides a kind of process of switched reluctance machines electromagnetic vibration noise emulated computation method, electromagnetic force, motor mould
State, electromagnetic vibration noise are respectively adopted JMAG, ANSYS and LMS Virtual.Lab software and are emulated, including real in detail below
Apply step：
Step 1 obtains the electromagnetic force for acting on two-dimentional stator electromagnet grid, specifically covers the following contents：
1) the two-dimensional geometry model of motor is established；
2) material assigns, builds circuit and coil grouping, and circuit is as shown in Figure 2；
3) operating condition and boundary condition setting；
4) electromagnetic grid divides, analysis step-length is arranged；
5) seek acting on the distributed electrical magnetic force of two-dimentional stator electromagnet grid, as shown in Figure 3.
Step 2 obtains the electromagnetic force for acting on three-dimensional stator electromagnet grid, specifically covers the following contents：
1) assign and divide the axial length of three-dimensional stator electromagnet grid；
2) the export step number of electromagnetic force is set；
3) derivative ac-tion is in the distributed electrical magnetic force of three-dimensional stator electromagnet grid, as shown in Figure 4.
Step 3 obtains and considers the anisotropic motor modal parameter of stator, specifically covers the following contents：
1) 3-D geometric model of motor is established；
2) it assigns stator anisotropic material parameter and assigns other components isotropic material parameters；
3) grid dividing and boundary condition are arranged；
4) modal parameter of motor is solved, motor mode schematic diagram is as shown in Figure 5.
Step 4 obtains the electromagnetic force for acting on three-dimensional stator structure, mainly will act on three-dimensional stator electromagnet grid
Distributed electrical magnetic force be transferred to the tooth surface of three-dimensional stator structure, as shown in Figure 6.
Step 5 obtains the electric and magnetic oscillation of motor with mode superposition method, specifically covers the following contents：
1) electromagnetic force that will act on three-dimensional stator carries out FFT transform；
2) electric and magnetic oscillation of switched reluctance machines is calculated with mode superposition method, as shown in Figure 7.
Step 6 obtains the electromagnetic noise of motor with boundary element method, specifically covers the following contents：
1) acoustic boundary member grid and site grid are established；
2) stator surface vibration is transferred to acoustic boundary member grid；
3) electromagnetic noise of switched reluctance machines is calculated with boundary element method, as shown in Figure 8.
The electromagnetic vibration noise emulated computation method that the present invention is mentioned is all suitable for any switched reluctance machines, and this hair
It is bright by taking practical 12/8 pole switching reluctance motor of three-phase as an example, describe the specific implementation process of the proposed method of the present invention in detail, be
Designing and developing for low-vibration noise switched reluctance machines provides reliable technological means.
Claims (7)
1. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines, which is characterized in that include the following steps：
1) electromagnetic force for acting on two-dimentional stator electromagnet grid is obtained；
2) electromagnetic force for acting on three-dimensional stator electromagnet grid is obtained；
3) it obtains and considers the anisotropic motor modal parameter of stator；
4) electromagnetic force for acting on three-dimensional stator structure is obtained；
5) electric and magnetic oscillation of motor is obtained with mode superposition method；
6) electromagnetic noise of motor is obtained with boundary element method.
2. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 1) specifically includes following steps：
11) the two-dimensional geometry model of motor is established；
12) it determines material, build circuit and coil grouping；
13) operating condition and boundary condition are set；
14) electromagnetic grid, setting analysis step-length are divided；
15) seek acting on the distributed electrical magnetic force of two-dimentional stator electromagnet grid.
3. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 2) specifically includes following steps：
21) it divides three-dimensional stator electromagnet grid and assigns axial length；
22) the export step number of electromagnetic force is set；
23) derivative ac-tion is in the distributed electrical magnetic force of three-dimensional stator electromagnet grid.
4. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 3) specifically includes following steps：
31) 3-D geometric model of motor is established；
32) stator anisotropic material parameter and other components isotropic material parameters are assigned；
33) boundary condition is arranged in grid division；
34) modal parameter of motor is solved.
5. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 4) includes：The distributed electrical magnetic force that will act on three-dimensional stator electromagnet grid is transferred to three-dimensional stator structure
Tooth surface.
6. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 5) specifically includes following steps：
51) electromagnetic force that will act on three-dimensional stator carries out FFT transform；
52) electric and magnetic oscillation of switched reluctance machines is calculated with mode superposition method.
7. a kind of electromagnetic vibration noise emulated computation method of switched reluctance machines according to claim 1, feature exist
In the step 6) specifically includes following steps：
61) acoustic boundary member grid and site grid are established；
62) stator surface vibration is transferred to acoustic boundary member grid；
63) electromagnetic noise of switched reluctance machines is calculated with boundary element method.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560302A (en) * | 2020-11-30 | 2021-03-26 | 武汉科技大学 | Electromagnetic noise simulation calculation method under acceleration condition of permanent magnet synchronous motor |
| CN113358750A (en) * | 2021-05-08 | 2021-09-07 | 国网浙江海盐县供电有限公司 | Boundary element method-based electrical equipment acoustic imaging method and system |
| CN114492098A (en) * | 2021-12-02 | 2022-05-13 | 南京邮电大学 | Vibration noise suppression method for bearingless switched reluctance motor |
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| JP2008015674A (en) * | 2006-07-04 | 2008-01-24 | Japan Research Institute Ltd | Electromagnetic field analysis method and electromagnetic field analysis program |
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| JP2008015674A (en) * | 2006-07-04 | 2008-01-24 | Japan Research Institute Ltd | Electromagnetic field analysis method and electromagnetic field analysis program |
| CN104036087A (en) * | 2014-06-24 | 2014-09-10 | 同济大学 | Power flow-boundary element model based elevated rail traffic vibratory-noise simulating and predicting method |
Non-Patent Citations (4)
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| 宋桂英等: "基于多物理场分析开关磁阻电机电磁振动噪声", 《微电机》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560302A (en) * | 2020-11-30 | 2021-03-26 | 武汉科技大学 | Electromagnetic noise simulation calculation method under acceleration condition of permanent magnet synchronous motor |
| CN113358750A (en) * | 2021-05-08 | 2021-09-07 | 国网浙江海盐县供电有限公司 | Boundary element method-based electrical equipment acoustic imaging method and system |
| CN114492098A (en) * | 2021-12-02 | 2022-05-13 | 南京邮电大学 | Vibration noise suppression method for bearingless switched reluctance motor |
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