| | | | | 楼主能否共享下软件啊,给个链接也行哈,谢谢!我也想学学。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | 在创建模型之前先说明一下该电容器的参数:
上下两极板尺寸:25mm×25mm×2mm,材料:pec(理想导体);
介质尺寸:25mm×25mm×1mm,材料:mica(云母介质);
激励:电压源,上极板电压:5V,下极板电压:0V。
要求计算该电容器的电容值。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | 第二步:建模。鉴于很多人刚开始学Maxwell,对于其操作不太熟,下面将仔细说说如何操作。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 这个位置直接dx=25mm dy=25mm dx=2mm也可以吧?
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 第四步:设置求解选项并验证模型(Assign Executive Parameter and setup solutions>validate)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 第六步:最后一步查看结果,处理绘制场量图和取数据(Result & Field Overlays)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 从上图可见,电容值为31.543pF,与资料里的一致。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 大神,帮忙解释一下这两个场仿真的目的,没理解上去。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 恒定电场:
导体中,以恒定速度运动的电荷产生的电场称为恒定电场,或恒定电流场(DC conduction(传导))。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 第二步建模,这个模型的建立跟前面的有点不一样哦。。。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 先创建导体Conductor,方法:Draw > Box,起点:(X,Y,Z)>(1, -0.6, 0),
坐标偏置:(dX,dY,dZ)>(1, 0.2,0.2),这个方法大家应该很熟了吧。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 接下来是创建另3个并列的导体,因为总共是4个一样的并列的导体,只要画出一个,另外3个复制即可。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 下面创建导体Conductor_4.方法:Draw > Box,起点:(X,Y,Z)>(0.8, -1, 0),坐标偏置:(dX,dY,dZ)>(0.2, 2.2,0.2)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建导体Conductor_5,Draw > Box,起点:(X,Y,Z)>(0.8, -0.4, 0),坐标偏置:(dX,dY,dZ)>(-1.2, 0.2,0.2)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建导体Conductor_6。可以用镜像的方法,因为是关于xoz平面对称的。方法:首先Select Conductor_5,然后Edit > Duplicate > Mirror(镜像复制)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 输入对称镜像平面法向量在平面中的第1点坐标:(0,0,0),输入对称镜像平面法向量在平面外的第2点坐标:(0,1,0)。上述设置表示镜像平面为XOZ平面。实际上上我们输入的向量是(0,1,0),这个向量刚好是XOZ平面的法线,这里是用法线表示平面的,非常方便!!
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 导体Conductor_7重新命名conductor_sink
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 到这里模型框架就搭好了。还有材料没有定,下面就开始选材料。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 由于导体常用的是铜,就把材料都设为铜吧。选择copper,方法前面说过了。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 设置激励(Assign Excitation),按f,将体选择改为面选择。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 这个位置哪位大神比较了解,我怎么操作不了这个位置呢
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 在设置完仿真区域后,就选择不到导体的6个面了,请问大神这个是软件版本问题吗?
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 设置剖分操作(Assign Mesh Operations).首先选中所有物体,Ctrl+A,
Maxwell 3D> Mesh operations> Assign> Inside Selection> Length Based
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1.建模(Model).
Project > Insert Maxwell 3D Design
File>Save as>Magnetostatic(静磁)(工程命名为“Magnetostatic”)
选择求解器类型:Maxwell > Solution Type> magnetic> Magnetostatic
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创建线圈.Draw > Regular Polygon(创建线圈横截面),中心点坐标: (X,Y,Z)>(0, 5, 0)
设置截面半径:(dX,dY,dZ)>(0.5, 0,0),截面多边形边数:Number of Segments: 12.
将多边形重命名为Coil(线圈).
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 设置材料为铜。Assign Material > copper |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建激励电流加载面(Create Section)。
首先Select Coil。
1.Modeler > Surface > Section
2.Modeler > Boolean > Separate Bodies(分离两Section面)
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建计算区域(Region)。Draw > Region,Padding Percentage:100%。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 设置计算参数(Assign Executive Parameter)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 设置自适应计算参数(Create Analysis Setup)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 建模(Model)。新建模型,Project > Insert Maxwell 3D Design。File>Save as> Parametric(工程命名为“Parametric”),选择求解器类型:Maxwell > Solution Type> Magnetostatic。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建多边形柱体2:是通过复制前一个多面体再通过修改大小,然后通过算法相减即得到线圈,后面会介绍。现在创建多边形柱体2。方法:先选中Polyhedron1,CTRL_C,CTRL_V,
修改相关设置
Center Position(中心点坐标): (X,Y,Z)>(0, 0, 0)mm
Start Position(起点坐标):(X,Y,Z)>(1, 0,0)mm
Axis(对称轴):Z
Height(柱体高度):0.8mm
多边形边数:Number of Segments: 36
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将Polyhedron1重命名为Coil。
将设置材料为铜:Assign Material > copper。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将六面体重命名为Slug。
把设置材料为铁:Assign Material > iron。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建计算区域(Region)。Draw > Region
Padding Percentage:200%。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建激励电流加载面(Create Section)。
Select Coil
Modeler > Surface > Section
Section Plane: YZ平面
Modeler > Boolean > Separate Bodies(分离两Section面)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 解释一下上面两项的含义。“Save Field and Mesh ” :在每一步参数扫描计算后,保存相应的计算场量和剖分信息,一般,系统为节约内存,默认不保存。“Copy geometrically equivalent meshes” 在下次计算中,可重复使用上次计算时未变形的模块的剖分数据。一般来说,频率扫描时,不推荐使用该选项,因为Ansoft的剖分算法是与频率相关的。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 在Project Manager 窗口,右键点击results>Create magnetostatic Report>rectangular plot。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 这个知道怎么操作,但是没有理解上去计算区域是要干什么事情?大神帮忙解答一下,谢谢
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| | | | | | | | | | | | | | | | | 今天再来做一个实例,永磁体磁化方向设置:局部坐标系的使用。 |
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| | | | | | | | | | | | | | | | | | | 要求:绘制4个同样形状的环状永磁体,对其设置不同的磁化方向,显示每个永磁体磁环的磁场分布。
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| | | | | | | | | | | | | | | | | | | | | 1.建模(Model)
Project > Insert Maxwell 3D Design
File>Save as> Magnet(工程命名为“Magnet”)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | Draw > Regular Polyhedron(创建多边形柱体1)
输入center position:
(X,Y,Z): (0, 0, -4)
输入圆柱体的半径和高度:
(dX,dY, dZ): (40, 0, 8)
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将RegularPolyhedron1重命名为Ring01_1,颜色改为blue。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 然后创建多边形柱体2:Draw > Regular Polyhedron。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 输入center position:
(X,Y,Z): (0, 0, -4)
输入圆柱体的半径和高度:
(dX,dY, dZ): (30, 0, 8)
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 用Ring01_1减去Hole,得到圆环柱。选中Ring01_1和Hole。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 点击OK,确定。Ring01_1磁环以全局坐标系Global的Z轴为对称轴,其磁化方向以Z轴为轴心线,向外沿半径方向发散。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 选中Ring01_1,右键:Edit > Duplicate >Along Line,输入坐标:
(X,Y,Z):(0,0,0)
(dX,dY,dZ):(120,0,0)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将Ring01_1_1重命名为:Ring01_2。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建局部坐标系:RelativeCS_Mag01_2。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 方法:Modeler > Coordinate System(坐标系统) > Create > Relative CS > Offset,输入坐标(X,Y,Z):(120,-50,0),设置局部坐标系的坐标原点。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 选中Ring01_2
鼠标右键点击,Edit > Properties
将Ring01_2磁环的工作坐标系改为局部坐标系RelativeCS_Mag01_2。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ring01_2磁环以局部坐标系RelativeCS_Mag01_2的Z轴为对称轴,磁化方向向外沿半径方向发散。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将工作坐标系切换回Global坐标:
Modeler > Coordinate System > Set Working > Global。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 输入坐标:(X,Y,Z)>(0,0,0),(dX,dY,dZ)>(0,120,0)。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将Ring01_1_1重命名为:Ring02_1,将Ring01_2_1重命名为:Ring02_2。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建Ring02_2磁环的局部坐标系:RelativeCS_Mag02_2。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将工作坐标系切换回Global坐标:Modeler > Coordinate System > Set Working > Global。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将Ring02_2的坐标系改为RelativeCS_Mag02_2。方法:选中Ring02_2,鼠标右键点击,Edit > Properties,将Ring02_2磁环的工作坐标系改为局部坐标系RelativeCS_Mag02_2。同上。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2. 设置磁环Ring02_1和Ring02_2的材料。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 方法:选中Ring02_1和Ring02_2,鼠标右键:Assign Material。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ring02_1沿全局坐标系Global的Z轴方向磁化,Ring02_2沿局部坐标系RelativeCS_Mag02_2的Z轴方向磁环。因为在284楼把Ring02_2的磁化坐标改成了RelativeCS_Mag02_2,Ring02_1没改还是全局坐标系Global。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 不要忘了先将工作坐标系切换回Global坐标:Modeler > Coordinate System > Set Working > Global。这一步很重要!!!
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.设置自适应计算参数(Create Analysis Setup)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 方法:Maxwell 3D > Analysis Setup > Add Solution Setup,设置如下:
最大迭代次数: Maximum number of passes :10,
误差要求: Percent Error: 3%,
每次迭代加密剖分单元比例: Refinement per Pass : 30%,
非线性残差:Nonlinear Residual: 0.01。
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| | | | | | | | | | | | | | | | | 1.建模(Model)。
Project > Insert Maxwell 3D Design,
File>Save as> Inductance (工程命名为“Inductance”),
选择求解器类型:Maxwell > Solution Type> Magnetostatic。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 但此时在ansys模型中E和I还是一体的(即box1),需要将它们物理分离。方法:选中Box1,Modeler > Boolean > Separate Bodies。这样一来,box1一分为二,一个是E,一个是I。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 选中Rectangle1,Edit > Duplicate > Along Line,(X,Y,Z)>( 0, 0, 0),(dX,dY,dZ)>(0, 0, 1.925)。复制总数Total Number: 3。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 再把这个柱子上的线圈复制到其他两个柱子上。选中Rectangle1, Rectangle1_1, Rectangle1_2。
Edit > Duplicate > Along Line,(X,Y,Z)>( 0, 0, 0),(dX,dY,dZ)>(0, 5,0),Total Number: 3。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 为了好区分,再重新命名。将Rectangle1, Rectangle1_1和 Rectangle1_2重命名为:Coil_left,Coil_left_1, Coil_left_2;将中间柱上线圈重命名为:Coil_mid, Coil_ mid _1, Coil_ mid _2;将右边柱上线圈重命名为:Coil_right, Coil_ right _1, Coil_ right _2。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 创建激励电流加载面(Create Section)。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 将左边柱上的截面重命名为:Section1, Section2 , Section3;
将中间柱上的截面命名为:Section4, Section5 , Section6;
将右边柱上的截面命名为:Section7, Section8 , Section9。
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 变压器外观模型就搭建完了,下面是创建计算区域和添加激励。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 楼主,这个后边的怎么没有啦,在哪里找,想继续跟着学Maxwell。 |
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| | | | | | | | | 楼主能发一份软件给我不,249023074@qq.com.论坛里没找到
谢谢! |
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| | | | | | | | | | | | | | | 仿真的时候,mosfet和diode上出现了红圈不知是神马意思? |
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| | | | | | | | | | | | | | | | | | | | | | | | | 驱动脉冲用的也是电压源,只是里面的设置不同,选好后连接完毕,下面介绍器件参数设置。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 接下来就可以仿真啦,选择simplorer circuit下的analyse即可,也可点击图标:
哈哈。。。。简单吧!!! |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 在这里想说说simplorer的优点。1.器件分类做的比较好,只要你清楚的知道有哪些类,便可以很容易的找到,比如说电阻R,你就可以到basic elements里的passive elements(无源器件)里面找,而不像有些软件(就不说谁了),非得输入器件英文名称,然后再search,万一我不会拼写某个器件的英文标志,咋办。。。所以就费事了。2.可以同时设置几个仿真参数,就是前面说的add transient(添加瞬态仿真参数),可以根据需要添加几个不同的仿真参数,想用哪个就用哪个,根据需要,多方便!3.还有就是查看仿真结果,可以把想要观察的不同器件的电压电流等参数都列出来在左边的工程文件下,想看哪个就点哪个,非常人性化!! |
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| | | | | | | buck电路的参数改为:输入输出还是24/12v不变,L改为120uH,电容180uF。 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 接着生成模型,modeler>FEA based modeler>Start 2D model generation。 |
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| | | | | 楼主,我没有找到安装软件的帖子,麻烦共享下咯,感谢!
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| | | | | 楼主,你好,我最近也对磁挺感兴趣的,但在学习之前,我想请教下,学这几个软件特别是磁的仿真,在开关电源中有什么特别的用处吗?在实际运用中,我们更关心,变压器的温度,磁通密度,磁场强度,电感量随温度,频率,电流等等的变化,以及变压器的磁损和铜损。
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