embedded simulink function is not taking value from previous iteration step

Question

KHALID SAKIB 2012-8-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/46907-embedded-simulink-function-is-not-taking-value-from-previous-iteration-step

Hi

I Have coded Matlab Embedded function to work my solar system at the MPP (incremental conductance). So i took the previous i, V and P and calculate what shouuld be duty cycle. And Tried to reach to the exact duty cycle for my MPP by continuously calculating the duty cycle from the previous step. But it did not take the previous step value rather always took initial D as 0 in each step.

*You can download the <file:*> http://knsakib.freehostia.com/solarcell_6_series_parallal_mpp.zip

The link to see the the system in JPEG: http://knsakib.freehostia.com/The%20solar%20cell%20system.jpg

The link to see inside Boost controller: http://knsakib.freehostia.com/inside%20the%20boost%20converter%20control%20%28orange%29.jpg

The matlab embedded block: http://knsakib.freehostia.com/Maximum%20power%20point%20function%20%28inside%20the%20MPPT%29.jpg

Please to go to the link or download the file copy paste those links on your browser otherwise its not working.