关于电感的一些概念和计算

ponderadams

可能哪儿出了问题吧

ponderadams

用plane53单元的话，可以直接求出电感，如下：
/Post1
!Part 7.1: Resistance and inductance;
Esel,S,Mat,,2
Etable,R,NMISC,8
Etable,L,NMISC,9     ！这里算出的电感单位是欧姆还是亨？
SSum
Allsel,All

ponderadams

9.4.1.4. Coil Resistance and Inductance
For stranded coils with the voltage-fed or circuit-fed options, you can calculate the resistance and inductance of the coil. Each element stores values of resistance and inductance. Summing these values gives the total resistance and inductance of the modeled region of the conductor. To store and sum these values, select the conductor elements using the ETABLE,tablename,NMISC,n command. (For the n value, use 16 for resistance and 17 for inductance.) Use the SSUM command or its menu path equivalent to sum the data.

Inductance values calculated for voltage-fed stranded coils (KEYOPT(1) = 2 for SOLID97) or circuit-coupled stranded coils (KEYOPT(1) = 3 for SOLID97) are only valid under the following conditions:

The problem is linear (constant permeability).

There are no permanent magnets in the model.

Only a single coil exists in the model.


For a system of coils, use the LMATRIX macro to compute the differential inductance matrix and the total flux linkage in each coil. Refer to Calculating the Inductance Matrix and Flux Linkage and LMATRIX for information on the LMATRIX macro.

2636748

10# seuwang

2636748

同问这个问题
seuwang 发表于 2007-11-12 16:35

电流数组中的cur是总电流I*N，如果两个线圈同名端相同，每个线圈的电感就是L+M

giughkhoi

25# 2636748
虽然时隔已久，为了给自己加分，还是尽量回复其中一个：

giughkhoi

我画了8层绕组，网格划分没遇到问题，可结果不可信，磁通量居然出现负值
Flux linkage of coil     1. =    -0.36148E+00
Flux linkage of coil     2. =    -0.11467E+03
Self inductance of coil  1. =     0.1 ...
ANSYSER117 发表于 2007-11-22 21:47

对于磁链出现负值，比如存在永磁体，因为磁链默认方向是线圈电流右手定则的方向，那么永磁体的磁场较强且与右手定则方向相反，就会出现负值，我在Ansys中有这样的经验，但不敢肯定是否正确，所以顶一下

junliliu15126

如果给定的是电压，那么用填充系数换算。 什么意思？

jared1984

没有计算过，感觉挺难的。