to obtain contour plots

1 次查看（过去 30 天）
Prashanth Nayak
Prashanth Nayak 2016-4-27
回答： Raghunath Rachabattuni 2023-6-30
Hi,
I am trying to obtain the IPMSM Flux weakening characteristics with matlab code. I could able to get required circle and ellipse but i could not get the black line in the pic which i have attached. Here is my code. Can u please rectify the problem.
Thank you
matlab code:
clear all;
close all;
clc;
x=0;
y=0;
r=355;
hold on
th = 0:pi/50:2*pi;
xunit = r*cos(th)+x;
yunit = r*sin(th)+y;
h=plot(xunit, yunit,'blue');
axis('equal');
hold on;
[m,n]=meshgrid(-500:500,-500:500);
p=(((m+299).^2)/5814.25+((n.^2)/2517.2));
contour(m,n,p,10);
[c,h]=contour(m,n,p,10,'red');
%clabel(c,h);
hold on;
Ld=(0.349e-3);
Lq=(0.806e-3);
[m,n]=meshgrid(250:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
contour(m,n,t,10);
[c,h]=contour(m,n,t,'black');
%clabel(c,h);
hold off;
grid on;
regards, Prashanth

请先登录，再回答此问题。

回答（2 个）

KSSV
KSSV 2016-4-27
编辑：KSSV 2016-4-27
change
[m,n]=meshgrid(250:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
to
[m,n]=meshgrid(250:-1:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
Though black lines appear it is not like the attached png.
  3 个评论
显示 1更早的评论
KSSV
KSSV 2016-4-27
Friend...I am not aware what the problem is...I only edited the code mistake....

请先登录，再进行评论。

Raghunath Rachabattuni
You can use the commandline utilities that are shipped with Motor Control Blockset. Please refer to the following links to explore the constraint curves and also how to use them.
PMSM Constraint Curves and Their Application - MATLAB & Simulink Example - MathWorks India
PMSM Drive Characteristics and Constraint Curves - MATLAB & Simulink - MathWorks India

类别

在 Help Center 和 File Exchange 中查找有关 Power Converters 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by