CN108563813A - One kind being used for photovoltaic step-up transformer magnetic field analysis - Google Patents
One kind being used for photovoltaic step-up transformer magnetic field analysis Download PDFInfo
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- CN108563813A CN108563813A CN201810167333.1A CN201810167333A CN108563813A CN 108563813 A CN108563813 A CN 108563813A CN 201810167333 A CN201810167333 A CN 201810167333A CN 108563813 A CN108563813 A CN 108563813A
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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
One kind being used for photovoltaic step-up transformer magnetic field analysis, it is related to transformer magnetic field analysis technical field.Photovoltaic step-up transformer magnetic field two-dimension analysis model is established by Ansys softwares；Establish the air section of suitable size；The material properties of power transmission cable are set；Grid division is carried out to photovoltaic step-up transformer magnetic field two-dimension analysis model；Current density is applied to photovoltaic step-up transformer magnetic field two-dimension analysis model；Magnetic line of force parallel boundary condition needed for defined analysis；Simulation analysis is carried out by Ansys software magnetostatic field solvers, show that photovoltaic step-up transformer global magnetic field is distributed；It defines photovoltaic boosting transformation and analyzes axial path, obtain the Distribution of Magnetic Field in axial path.The present invention has the beneficial effect that：To simulation calculation be carried out to photovoltaic step-up transformer magnetic field using the approach application Ansys softwares of finite element, can fast and accurately obtain the size Distribution of Magnetic Field in magnetic field, directive significance has been designed for photovoltaic step-up transformer.
Description
Technical field
The present invention relates to transformer magnetic field analysis technical fields, and in particular to one kind is for photovoltaic step-up transformer magnetic field point
Analysis.
Background technology
Large-sized photovoltaic power station consider capacity and voltage loss the reason of, grid-connected voltage is generally relatively high, as 110KV,
220KV, so high submitting voltage, it is necessary to which carrying out secondary booster scheme could realize.So, it is drawn according to China's voltage class
Point, boosting on the spot can select 10KV or 35KV, then again secondary booster to sending out voltage.This just needs photovoltaic boosting transformation
Device, transformer are a kind of common electrical equipments, can be used to another number for the alternating voltage of a certain numerical value being transformed to same frequency
The alternating voltage of value.Step-up transformer is exactly to be handed over for the alternating voltage of low numerical value being transformed to another high value of same frequency
The transformer of time variant voltage, in the design of photovoltaic step-up transformer, coil magnetic field analysis is a key parameter.
Existing rank photovoltaic step-up transformer magnetic field analysis, generally carries out analysis calculating by theoretical programming, is not easy intuitively to realize,
It is not easy to design operation in engineering.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide one kind being used for photovoltaic step-up transformer magnetic
Field analysis will emulate photovoltaic step-up transformer magnetic field using the approach application Ansys softwares of finite element through the invention
It calculates, can fast and accurately obtain the size Distribution of Magnetic Field in magnetic field, can be that photovoltaic step-up transformer has designed directive significance.
To achieve the above object, the present invention is using following technical scheme：It includes the following steps：
Step 1: establishing photovoltaic step-up transformer magnetic field two-dimension analysis model by Ansys softwares；
Step 2: establishing the air section of suitable size, the analyzed area of power transmission cable is surrounded；
Step 3: the material properties of setting power transmission cable, the relative permeability of non-magnetic material are set as 1, the magnetic of magnetic material
Conductance is set according to BH curve；
Step 4: carrying out grid division to photovoltaic step-up transformer magnetic field two-dimension analysis model, ensure that mesh generation is regular and thin
Change；
Step 5: applying current density to photovoltaic step-up transformer magnetic field two-dimension analysis model；
Step 6: the magnetic line of force parallel boundary condition needed for defined analysis；
Step 7: carrying out simulation analysis by Ansys software magnetostatic field solvers, photovoltaic step-up transformer global magnetic field point is obtained
Cloth；
Step 8: defining photovoltaic boosting transformation analyzes axial path, the Distribution of Magnetic Field in axial path is obtained.
The Ansys magnetostatic fields solver can calculate the stationary magnetic field encouraged by DC current constant excitation source, can
Nonlinear material is analyzed, the equation that vector magnetic potential A meets in magnetostatic field solver is as follows：
。
In the equation, Az (x, y) is vector magnetic potential z-component, and Jz (x, y) is that the electric current in electric current flowing section is close
Degree, ur are to solve material relative permeability in domain, and u0 is space permeability.It may be interpreted as, pass through given driving source Jz (x, y)
Magnetostatic field solver can calculate the vector magnetic potential for solving each point in domain.J and A is vector, and the excitation of Z-direction is only produced
The vector magnetic potential component of raw Z-direction.
The equation is derived from by Maxwell equation, and detailed process is as follows：
In static magnetic field, magnetic field intensity meets Ampere circuit law：
According to Maxwell equation
Have again
Therefore
It can be obtained according to B=▽ × A
Above formula is applied in finite element numerical calculating, can be easy to acquire vector magnetic potential A, pass through B=▽ × A and H=B/
Uru0 can acquire the physical quantitys such as magnetic induction intensity and the magnetic field intensity of magnetostatic field.
After adopting the above technical scheme, the present invention has the beneficial effect that：It will be using the approach application Ansys softwares pair of finite element
Photovoltaic step-up transformer magnetic field carries out simulation calculation, can fast and accurately obtain the size Distribution of Magnetic Field in magnetic field, can be photovoltaic
Step-up transformer has designed directive significance.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart of the present invention.
Specific implementation mode
Shown in Fig. 1, present embodiment the technical solution adopted is that：It includes the following steps：
Step 1: establishing photovoltaic step-up transformer magnetic field two-dimension analysis model by Ansys softwares；
Step 2: establishing the air section of suitable size, the analyzed area of power transmission cable is surrounded；
Step 3: the material properties of setting power transmission cable, the relative permeability of non-magnetic material are set as 1, the magnetic of magnetic material
Conductance is set according to BH curve；
Step 4: carrying out grid division to photovoltaic step-up transformer magnetic field two-dimension analysis model, ensure that mesh generation is regular and thin
Change；
Step 5: applying current density to photovoltaic step-up transformer magnetic field two-dimension analysis model；
Step 6: the magnetic line of force parallel boundary condition needed for defined analysis；
Step 7: carrying out simulation analysis by Ansys software magnetostatic field solvers, photovoltaic step-up transformer global magnetic field point is obtained
Cloth；
Step 8: defining photovoltaic boosting transformation analyzes axial path, the Distribution of Magnetic Field in axial path is obtained.
The Ansys magnetostatic fields solver can calculate the stationary magnetic field encouraged by DC current constant excitation source, can
Nonlinear material is analyzed, the equation that vector magnetic potential A meets in magnetostatic field solver is as follows：
。
In the equation, Az (x, y) is vector magnetic potential z-component, and Jz (x, y) is that the electric current in electric current flowing section is close
Degree, ur are to solve material relative permeability in domain, and u0 is space permeability.It may be interpreted as, pass through given driving source Jz (x, y)
Magnetostatic field solver can calculate the vector magnetic potential for solving each point in domain.J and A is vector, and the excitation of Z-direction is only produced
The vector magnetic potential component of raw Z-direction.
The equation is derived from by Maxwell equation, and detailed process is as follows：
In static magnetic field, magnetic field intensity meets Ampere circuit law：
According to Maxwell equation
Have again
Therefore
It can be obtained according to B=▽ × A
Above formula is applied in finite element numerical calculating, can be easy to acquire vector magnetic potential A, pass through B=▽ × A and H=B/
Uru0 can acquire the physical quantitys such as magnetic induction intensity and the magnetic field intensity of magnetostatic field.
After adopting the above technical scheme, the present invention has the beneficial effect that：It will be using the approach application Ansys softwares pair of finite element
Photovoltaic step-up transformer magnetic field carries out simulation calculation, can fast and accurately obtain the size Distribution of Magnetic Field in magnetic field, can be photovoltaic
Step-up transformer has designed directive significance.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (4)
1. one kind being used for photovoltaic step-up transformer magnetic field analysis, it is characterised in that：It includes the following steps：
Step 1: establishing photovoltaic step-up transformer magnetic field two-dimension analysis model by Ansys softwares；
Step 2: establishing the air section of suitable size, the analyzed area of power transmission cable is surrounded；
Step 3: the material properties of setting power transmission cable, the relative permeability of non-magnetic material are set as 1, the magnetic of magnetic material
Conductance is set according to BH curve；
Step 4: carrying out grid division to photovoltaic step-up transformer magnetic field two-dimension analysis model, ensure that mesh generation is regular and thin
Change；
Step 5: applying current density to photovoltaic step-up transformer magnetic field two-dimension analysis model；
Step 6: the magnetic line of force parallel boundary condition needed for defined analysis；
Step 7: carrying out simulation analysis by Ansys software magnetostatic field solvers, photovoltaic step-up transformer global magnetic field point is obtained
Cloth；
Step 8: defining photovoltaic boosting transformation analyzes axial path, the Distribution of Magnetic Field in axial path is obtained.
2. according to claim 1 a kind of for photovoltaic step-up transformer magnetic field analysis, it is characterised in that：The Ansys
Magnetostatic field solver can calculate the stationary magnetic field encouraged by DC current constant excitation source, can divide nonlinear material
It analyses, the equation that vector magnetic potential A meets in magnetostatic field solver is as follows：
。
3. according to claim 2 a kind of for photovoltaic step-up transformer magnetic field analysis, it is characterised in that：The equation
In formula, Az (x, y) is vector magnetic potential z-component, and Jz (x, y) is the current density in electric current flowing section, and ur is to solve material in domain
Expect relative permeability, u0 is space permeability；It may be interpreted as, it can be with by given driving source Jz (x, y) magnetostatic field solver
Calculate the vector magnetic potential for solving each point in domain；J and A is vector, and the excitation of Z-direction only generates the vector of Z-direction
Magnetic potential component.
4. according to claim 2 a kind of for photovoltaic step-up transformer magnetic field analysis, it is characterised in that：The equation by
Maxwell equation is derived from, and detailed process is as follows：
In static magnetic field, magnetic field intensity meets Ampere circuit law：
According to Maxwell equation
Have again
Therefore
It can be obtained according to B=▽ × A
Above formula is applied in finite element numerical calculating, can be easy to acquire vector magnetic potential A, pass through B=▽ × A and H=B/
Uru0 can acquire the physical quantitys such as magnetic induction intensity and the magnetic field intensity of magnetostatic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167333.1A CN108563813A (en) | 2018-02-28 | 2018-02-28 | One kind being used for photovoltaic step-up transformer magnetic field analysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167333.1A CN108563813A (en) | 2018-02-28 | 2018-02-28 | One kind being used for photovoltaic step-up transformer magnetic field analysis |
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|---|---|
| CN108563813A true CN108563813A (en) | 2018-09-21 |
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|---|---|---|---|
| CN201810167333.1A Withdrawn CN108563813A (en) | 2018-02-28 | 2018-02-28 | One kind being used for photovoltaic step-up transformer magnetic field analysis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113297726A (en) * | 2021-04-29 | 2021-08-24 | 益阳市信维声学科技有限公司 | Method for generating magnetic induction intensity curve of loudspeaker and terminal |
-
2018
- 2018-02-28 CN CN201810167333.1A patent/CN108563813A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113297726A (en) * | 2021-04-29 | 2021-08-24 | 益阳市信维声学科技有限公司 | Method for generating magnetic induction intensity curve of loudspeaker and terminal |
| CN113297726B (en) * | 2021-04-29 | 2023-06-06 | 益阳市信维声学科技有限公司 | Method and terminal for generating magnetic induction intensity curve of loudspeaker |
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Application publication date: 20180921 |