hi all,

Below is attached a simulink model of a self excitation scheme. but i have o clue y it chooses not to simulate, it says that the frequency of the sources, dont match the phasor frequency set in the GUI but both are at 60 Hz??

n if it does simulate (sometimes it does), i get 0 output power (both real and reactive) comming out of the generator/turbine block -as i can view on the scope??

how do i fix this??

thanks

 

Can you attach the actual simulink file?

Steve

 

hey steve, its not allowing me to post the model since its an invalid format... ".mdl" cant be uploaded i think :/

must i attach the results at the scope if that will help?

 

You can use "print screen" to capture the display screen then import it into paint and crop all of the junk you don't want to post. Then you can save it as a .PNG file and post it that way.

hgmjr

 

here are the results, hope it helps ......

we can see that i get 0 W and 0 VARS for and Q, no matter what wind speed and capacitance i use. i am sure that the combination of capacitance and wind speed should be enough to excite the stator windings, since i based this model on teh same values/parameters that were used in the Matlab demo - Wind Turbine IG

 

thanks hg, by display screen do you mean the dynamics/whats inside the turbine/generator block??

 

What you do is zoom the screen to get the largest image of the view you want to post, then you press the "print screen" key. That copies the image to the windows clip board. Then you open up a fresh instance of PC paint and then perform a paste operation. You will get the entire screen into PC paint. Next you use the crop feature of PC paint to box that portion of the image you want to keep. Next you open a new PC paint screen and paste the cropped image into the new instance of PC paint. You can then use the "save as" and specify .PNG file type. The results is a file you can post into the forum.

hgmjr

 

hey , thanks...i thort i did that in the 1st attachment tho with the simulink model...so im guessing that you guys dont have that clear view of it??

ok, so here is the new image, more zoomed in, and saved as a .png format just like what the doctor ordered !

 

That's perfect. Did you do it the way I suggested or do you have your own method?

hgmjr

 

well i used printscrn....yea, cos i dont think that there are any other ways to save images from simulink...

hope it help!!

thanks stax!

Dushen - iceman11`

 

dont copy and paste from the demos of matlab....we can find it there itself