Thank you Khadim.

Actually, I am changing the time scale. You know the irradiance is not changing fast. So you can take same value for a time period. For example I am reducing 18 hours to 18 seconds. You may see some results in my papers

Thank you Joswar, I didn't use any document. Which formulas?

Thanks, I may think about this.

Thanks for your interest.

That's really helpful, thanks a lot.

Thank you. In practice, the cascaded controller should wait for other one. You can see it in some paper as inner and outer controller loops. 10 times bigger sampling is a generally use. It may vary depending on the system’s dynamic response

I didn't calculate the parameters. Also I didn't use any reference here. But I think you may find a lot of paper about the design of the converter.

Thanks for your interest. Actually I don't know is it drop or not :)

I think is to avoid saturation

سلام ممكن سؤال

You should modify the MPPT based on voltage at DC bus.

Hi, it may complicate to show by a video.

I replied to your messages on ResearchGate.

@@nakiguler I appreciate your kindness Sir. I will check it up. Thanks.

Netice alabildin mi ?

It should be defined as “persistent”.

@ETIKALA NAGARAJU i have file .slx

Go Yang Hi guys, Did you get the same result as presented in this tutorial? I don't! My Vbus fluctuate regarding to the radiation. You can check it out in here: (MATLAB R2016b) drive.google.com/file/d/1VxM-_GYHzyQtqG7cE4o9TBX8r7GNSegs/view?usp=drivesdk

You may check my official profile. avesis.gazi.edu.tr/gulern/publications Also I suggest to see someones: Hasan Komurcugil and Sertac Bayhan. We have published some papers.

The system is based on two sources. So, if the PV has enough power the load supplied by PV. Otherwise, the battery provides the power to keep the load voltage constant.

Hi, a similar procedure can be used for the fuel cells. You may use FC as the power source.

Were you able to do this? If yes, I’m interested in your model. Could you send it to me on my e-mail? fernandompcoelho97@gmail.com

@@fernandocoelho3808 Yeah ,but we're currently facing some issues with FC integration to the load... So once we have clear picture and result, we'll let u know Sir...

@@shreyass414 Thanks very much.

@@nakiguler Gud eve Sir. I found out bit more difficult for the same model integrating with Fuel cell as the main Source. Can u please upload a video using FC for the same design .It's my humble request and expecting the reply very soon.

Thanks. You may try to increase dc-link capacitance, also you may need to tune PI parameters.

Hi, I may think about this. Thanks.

Hi, I have no idea about the name of the control method. I don't know is it in literature.

Calculation of the controller parameters is a challenge for complex systems. I can't say a method for all models. Sorry, but you may check Ziegler Nichols method.

@@nakiguler what's Ziegler Nichols method..

Did you found it? I have no idea?

I am using most common way :) so manually tuning. You may start low Kp and increase step by step. Thereafter you may increase Ki step by step.

The derivative corrector is not necessary in this case. The proportional&integrator is already enough. If you really want to improve it, why you don't change PI parameters (P and I values)

@@goyang2707 how to give Kp and Ki values.

The fast charge issue depending on both power and battery limits. So, you may have big power, but the current limit of the battery is important in this case. I don't know it works or not in MATLAB.

@@nakiguler How to increase the current limit in a model? I want it to charge and discharge faster, but dont know how to do it

Hi, I added one of my paper about the battery model. Thank you. Title: A Modified Droop Control Method for PV Systems in Island Mode DC Microgrid

@@nakiguler Thank you SIR :)

@@nakiguler sir, kindly send the model of PV battery integration. I have found some errors in this model . With Regards Saumya ranjan lenka saumyaranjanlenka@gmail.com

Hello, it needs a management algorithm. So you should define stop points for operating areas.

Me too

Hi, if the reference battery current is zero, it means that it is disconnected. Also, you may define a disconnection case by keeping the battery side switch OFF.

It's a basic example. You can add multiple functions, as you described, such as disconnecting the battery (Ppv = Pload or Ppv >= Pload & Soc = 100%)? You can incorporate voltage control for the PV converter... many functions that you can add.

@@boussaoudfarid8297 Thanks for the suggestion

Merhaba, maalesef çalışma alanımın dışında bir konu. Ancak bununla ilgili güncel makale ve tezler olabileceğini düşünüyorum. Özellikle optimizasyon algoritmaları bu alanda çok kullanılıyor. İlginiz için ben teşekkür ederim :)

Hi, it seems there are different sampling times used. Could you say which block is highlighted after this error?

Hi, I am not sure, but the power direction may wrong. Please check both the model and control parts step by step. It is not a typical problem.

@@nakiguler thank you sir I found the problem and it works great ( wrong mppt code) although I have another queston and it is mentionned above too : why did you chose Vref = 48 v ? I'm trying to understand how the management system works the way you've explained .

@@narimanebenameur1050 are you get wave forms same as in video??

Hi, I added it below the video. disk.yandex.com.tr/d/H7a8RM33ZBAc-g

I have no experience with supercapacitors.

enter the panel characteristic in the PV array properties

Because the load is required of 48V as defined

Have you found the answer?

It depends on your load voltage. I consider there is a load that’s operating voltage is 48V. If you have a 60V nominal load voltage, you can design the system for 60V. But the system parameters may change. I am tuning the PI parameters by trial and error. You may check my latest video to see it.

Hello, if you can clearly see the power architecture, you should distinguish two channels (1: PV + converter / 2: Battery + converter). Depending on your system specifications, the PV converter can be a non-reversible Boost or Buck converter: Boost to increase the output voltage or Buck to decrease it (for example, if PV = 200V and you want 100V at the converter's output, you should choose a Buck converter since it decreases the voltage). On the battery side, the converter should be a bidirectional Buck-Boost converter, meaning power flow can go in both directions (battery discharge and battery recharge). To calculate the converter parameters (L, C), you can refer to courses that explain the steps to follow for each type of converter.

Did you find a way to find out the values?

@@boussaoudfarid8297 Did you find a way to find out the values?

@@boussaoudfarid8297 I followed the same steps I took for an L calculating in the last video (Grid-connected PV with boost converter and inverter), but I did not get the same result (the C value of the correct).

I didn't calculate these parameters. Really I am sorry, but I can't make a new video from long time. Actually I am so much busy and I have no time. But you may check "design of bidirectional dc/dc converter". It may work. Thanks for your interest.

Thanks for your interest.

Thanks for the suggestion, I will think about that.

It's normal, the Ppv change because Ip change depend on the irradiation. But the Vbus should stay contant reagardeless of the irradiation

I am using most common way :) so manually tuning. You may start low Kp and increase step by step. Thereafter you may increase Ki step by step.

Hi. Really I am sorry, but I can't make a new video from long time. Actually I am so much busy and I have no time. But I can say that the frequency doesn't depending on load or other parameters in islanded mode. It just determined by frequency of reference/modulation signal. In the grid connected mode, it is hard to see the effect of stability in terms of frequency. Because many parameters should be included to see a big picture.

of course, possible.

Hello, I didn't check the converter design. I selected these component parameters. These parameters depend on your system. You may select the parameter depending on input current ripple and output voltage ripple. You may check my previous video to design the boost converter. Part 1: kzfaq.info/get/bejne/ibCZo5qUqrmpk5s.html Part 2: kzfaq.info/get/bejne/bJipja971LiUkaM.html

Thank you very much for your kind information, sir

You may use matlab function block. Also you may find the algorithm below the video.

Hello, have you reached any conclusions? have the same question

@@josemarcos4503 so far I found out that if output voltage needs to be constant a closed loop control is needed in that case mppt algorithm won't work. Power will increase or decrease in order to make the output voltage constant.

@@generaljager3101 I have a solution with closed loop control of 48 V. MPPT is good to optimize power output of PV, hovewer the constant voltage need is helped with a Boost or Buch converter depending if you need to increase or decrease voltage.

Hi, you may check the control of battery side. Especially check add blocks +/-.

Awesome, thanks for your help.

maybe this can help you www.mathworks.com/matlabcentral/answers/70005-how-can-i-change-directory-of-matlabfunction-to-a-writable-directory-preferably-outside-of-matlab-i

You should change the ’Current Folder’ which is seen around the command line in MATLAB.

If it structured such this type, it works like a regulator. So, its output is just a generated value for reducing the input error.

Frequency depends on the carrier frequency. So it can't change in such a system. As I know It is possible in a grid.

I didn't calculate these. I will make a video about it...