Weldon Naki. That's the spirit. I am with the University of Paris-Saclay and really appreciate your efforts. Just to add one thing that all of the sample time for e.g. 10e-6 should be the same for PWM generator, powergui, solver settings, and PI controllers or otherwise the Simulink gives an error. I would appreciate if you keep on posting such videos.
Hi Dr Guler, I have followed all your videos and read some of your research papers. I’m interested in the islanded PV DC microgrid with voltage droop control. Is it possible to access this Simulation anywhere? Thanks
I have a question? If we increase series or parrallel string for solar, then PID will behave same as it is now? Battery parameters have to be changed then??
Hello Naki! Could you please to explane me what happen with V_bus when the battery is fully charged (SOC=100%) and PV power is maximum? I think it will increases and not stable at 48V? If I need supplay load with constant voltage I need additional buck or boost converter between v_bus and load?
Thank you for your explanation! It is very clear and easy to follow! Could you tell, is battery control method named droop control or it is its modified version?
Thanks for the tutorial and that was really helpful for me. However, I want to know why you used different sampling times for those two PI controllers? one of them is 50e-6 and the other one is 500e-6
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
Dear Naki, I discussed your model here in Paris and really my colleagues appreciated your work and your devotion to this channel. Keep it up. I would be happy to know that how would you simulate your model for a typical day. If you select (24*60*60) it will take at least weeks to complete the simulation.
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
Hello, do you have a clip on how to simulate the charge and discharge of a battery when used in conjunction with a supercapacitor? It was simulated using matlab. Well, I'm studying this.
How to combine two PV sources output to give it to common load. Both sources have around 50 v after boost convertor, but now I want to combine them to give a common load. You can say I want to combine power
I tried to make this but I am not getting any voltage at Vbus, hence not getting the desired output. The PV part works fine. I tried twice but the same issue. Any idea on the problem?
Naki Bey öncelikle emekleriniz için minnettarım. Y.lisans öğrencisiyim. Ne yalan söyleyeyim videolarınızdan öğreniyorum tüm sistemi. Yalnız her şeyi sizle aynı yapmama rağmen grafikler aynı çalışmıyor. Sonra mmpt kodlarında neden if dp=0 sonra hemen altında if dp
how did you calculate for the inductance value and capacitance value of the buck boost converter of the battery side? any references/formulas would be of great help thanks
Sir with this simulation can we connect battery to supply the load when both battery n solar unable are deficit to feed the load.. could u do that simulation sir
Is there any way I could tell to the the PV generation that reduce generation as soon as the battery is 80% and the demand is also less than the generation? What will happen when in this model of yours if the battery is fully charged and PV generation is more than load demand.
Hello, I have the problem with my simulation. I want to have 400V on the V-out and I set the Vref on this 400V. When I change the value of P and I on the PI controller I have 400V on the V-out after 0.5sec and it's oscillates slighly around this value. But I also want to add the inverter and some load to have off-grid installation, when I add only inverter without load all it's good, but when I add also the load to this inverter my all values it's bad, the voltages are weird and I don't know how to fix it. Can anyone help me with this or share some tip to fix this problem? Thanks in advance.
Sir you are uploading videos which are very useful and we learn from it. Appreciations .can you upload an MPPT (PO) algorithm with voltage reference as output of MPPT block?
Hocam Çok teşekkürler, Sormak istediğim Simülasyonun Örnekleme zamanı Ts=1e-5, PID kontrolörlerin örnekleme zamanları birbirinden farklı sırasıyla 50e-6 ve 500e-6 kullanmışsınız, bunun özel bir sebebi varmı, yada bu şekildeki kullanım sisteme nasıl bir fayda sağlıyor. Bu yayınlar güç elektroniğine çok şey kattı tekrardan çok teşekkürler.
Thanks for the information you are giving here. I learned a lot. Kindly, I will appreciate it if you can suggest how this type of model can be updated as a PhD work. I mean, which areas improvements can be made? The controller, the converter topology and the practical implementation.
great job 👍🏽👍🏽👍🏽👍🏽 i suggest you to do lithium ion battery charging circuit using constant current constant voltage charging method with boost converter for next video! thank you
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.
Thank you very much for this video ,i have a question that i want to add a grid for the reason to make a compensation for my load please can you hope me for that ..thank you
Thank you so much!!! I'm having Solar energy this semester, and this is really helpful!! Are you using some document, or can you give me the formulas?? Anyway amazing job you have a new subscriber!
I did as you said in the video but I want to increase my voltage to 400 volts but it is not increasing no matter what I do (like capacitor, inductor and resistor values). Could you please guide me how to increase the voltage?
hello Naki Guller, I appreciate your great efforts. I have a question regarding the sampling time of PI controller which is ten times greater than the other, Can you plz explain why?? thanks in advance
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.
thank you sir..... i dot his project step by step but i have error message : The sample time 1e-05 of 'a121/Add' at input port 2 is different from the sample time 0.0005 of 'a121/pi_s1/Saturate' at output port 1. Consider inserting a Rate Transition block between the two ports. Alternatively, you can control the diagnostic action for unspecified rate transitions by changing the option "Multitask (or Single task) rate transition" on the Sample Time Diagnostics pane of the Configuration Parameters dialog box. what i can do????
hello sir, what is the indicator that states when the battery is full during the charging process and states the battery is empty during the discharging process?
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.
Thanks for this video sir. How can you help with the MPPT Control. I have 2018b and you are using 2019a. It prompted me to save in an earlier version but don't have anybody around me using 2019a. Hope to have a help from you
Hello.Can you make a video to combine the pv connected to the grid but at the same time connected with a battery for self consumption?I am working on a household microgrid which will use energy both from the grid and from the battery depending the weather
If I connect multiple sources (more PVs, fuel cells, wind turbines) around the load it would work (charge the battery faster)? It is not working in my model
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.
Thank you for this video sir.Just one question I tried to simulate and my PV output keeps oscillating around 48V.Do you see any reasons for that.I am using Matlab2021a where the soltech 215p module is unavailable.Could that be a reason? Thank you for any kind replies
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 :)
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)
hi, thanks for your videos. I had a quesion. If the PV power is same as load power then the battery will charge or discharge? Is there any way to disconnect the battery if the pv power is same as load power
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.
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, your video is very informative, can I ask how you chose the R, C & L values? As well as battery? My PV is designed for 200V so what values shall I use? is there a way to calculate
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.
@@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).
Good and keep showing up, Please, can you make an islanding microgrid , grid disconnected by the fault and the load will supply from the PVarray and the battery , but the battery will supply when the grid disconnected you can do that through control between the battery and the fault from through harmonic analysis
@@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.
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: ua-cam.com/video/SJip7cESEcg/v-deo.html Part 2: ua-cam.com/video/62yZLJoR0ao/v-deo.html
sir , I really hope you answer my question, I did the same simulation but didn't have the same results !! the problem is when I tested the very first part PV +boost+load+MPPT the current "Ipv" is a sequare signal and takes negative values also. what do you think the problem is ?
@@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 .
sir when i compile the first PV part , i got a message ' please change your current directory to a writable outside of the MATLAB installation area' What should i do sir?!
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
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.
Thanks man...it was a very informative video.I simulated your control algorithm in my model to obtain the results. But, when I am keeping the initial SOC of battery as 100% and solar PV is supplying power to the load, in that case also, the battery is consuming power. I think the battery being 100% charged, should not consume power. Could you or anyone help me with this..
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
Weldon Naki. That's the spirit. I am with the University of Paris-Saclay and really appreciate your efforts. Just to add one thing that all of the sample time for e.g. 10e-6 should be the same for PWM generator, powergui, solver settings, and PI controllers or otherwise the Simulink gives an error. I would appreciate if you keep on posting such videos.
Thank you Khadim.
Hi Dr Guler, I have followed all your videos and read some of your research papers. I’m interested in the islanded PV DC microgrid with voltage droop control. Is it possible to access this Simulation anywhere?
Thanks
I have a question?
If we increase series or parrallel string for solar, then PID will behave same as it is now?
Battery parameters have to be changed then??
Hello Naki! Could you please to explane me what happen with V_bus when the battery is fully charged (SOC=100%) and PV power is maximum? I think it will increases and not stable at 48V? If I need supplay load with constant voltage I need additional buck or boost converter between v_bus and load?
For infinity bus voltage you said current must be controlled,,what is the mechanism for that?Will it be very complex?
Really helpful and clear explanation!! Thanks
Thank you for your explanation! It is very clear and easy to follow!
Could you tell, is battery control method named droop control or it is its modified version?
Thanks for your interest. Actually I don't know is it drop or not :)
Thanks for the tutorial and that was really helpful for me. However, I want to know why you used different sampling times for those two PI controllers? one of them is 50e-6 and the other one is 500e-6
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
Good video. Can you explain why you used a voltage control in cascade with a current control in the battery?
Dear Naki, I discussed your model here in Paris and really my colleagues appreciated your work and your devotion to this channel. Keep it up. I would be happy to know that how would you simulate your model for a typical day. If you select (24*60*60) it will take at least weeks to complete the simulation.
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
if the bus voltage is less than the voltage of pv side is enough with a buck converter instead of boost?
Hello, do you have a clip on how to simulate the charge and discharge of a battery when used in conjunction with a supercapacitor? It was simulated using matlab. Well, I'm studying this.
How to combine two PV sources output to give it to common load.
Both sources have around 50 v after boost convertor, but now I want to combine them to give a common load. You can say I want to combine power
I tried to make this but I am not getting any voltage at Vbus, hence not getting the desired output. The PV part works fine. I tried twice but the same issue. Any idea on the problem?
Naki Bey öncelikle emekleriniz için minnettarım. Y.lisans öğrencisiyim. Ne yalan söyleyeyim videolarınızdan öğreniyorum tüm sistemi. Yalnız her şeyi sizle aynı yapmama rağmen grafikler aynı çalışmıyor. Sonra mmpt kodlarında neden if dp=0 sonra hemen altında if dp
My simple question.. Which method we are using for charging battery?? Is it constant voltage!
Can you use motor instead of resistive load
Thank you very much for the contribution!!!!
Good work sir👍
Thanks for this Prof. Really helpful.
thanks for the video Sir, if you may can you tell us how you chose the parameters of the PI controller thanks.
how did you calculate for the inductance value and capacitance value of the buck boost converter of the battery side? any references/formulas would be of great help thanks
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.
Hey, sir if i want to use dc load, what should i do?
Sir with this simulation can we connect battery to supply the load when both battery n solar unable are deficit to feed the load.. could u do that simulation sir
Sir,could you tell me why my bus voltage is increasing above the reference voltage and continuing there without bothering my reference voltage??
Is there any way I could tell to the the PV generation that reduce generation as soon as the battery is 80% and the demand is also less than the generation? What will happen when in this model of yours if the battery is fully charged and PV generation is more than load demand.
You should modify the MPPT based on voltage at DC bus.
Sir..
How did you choose inductor and capacitor values
By how u design pi controller
What's the battery control mechanism
Bless you for your effort
Is there a paper or research related to it that you can provide me with?
why u take internal resistance of inductor(boost) as .1
Sir... How to give pi values for pv array modeling before the pwm plz tell me sir
dear sir can can you use DC Motor as a load in this system
Hello, I have the problem with my simulation. I want to have 400V on the V-out and I set the Vref on this 400V. When I change the value of P and I on the PI controller I have 400V on the V-out after 0.5sec and it's oscillates slighly around this value. But I also want to add the inverter and some load to have off-grid installation, when I add only inverter without load all it's good, but when I add also the load to this inverter my all values it's bad, the voltages are weird and I don't know how to fix it. Can anyone help me with this or share some tip to fix this problem? Thanks in advance.
Can u explain how the pi of the battery works in a small video
Sir you are uploading videos which are very useful and we learn from it. Appreciations .can you upload an MPPT (PO) algorithm with voltage reference as output of MPPT block?
Amazing tutorial. It's really helpful.
I'm wondering how you fix the problem about Vbus unstable regarding to the irradiation.
Thanks. You may try to increase dc-link capacitance, also you may need to tune PI parameters.
Hocam Çok teşekkürler, Sormak istediğim Simülasyonun Örnekleme zamanı Ts=1e-5, PID kontrolörlerin örnekleme zamanları birbirinden farklı sırasıyla 50e-6 ve 500e-6 kullanmışsınız, bunun özel bir sebebi varmı, yada bu şekildeki kullanım sisteme nasıl bir fayda sağlıyor. Bu yayınlar güç elektroniğine çok şey kattı tekrardan çok teşekkürler.
Netice alabildin mi ?
Thankyou so much... Really helpfull
Thanks for the information you are giving here. I learned a lot. Kindly, I will appreciate it if you can suggest how this type of model can be updated as a PhD work. I mean, which areas improvements can be made? The controller, the converter topology and the practical implementation.
I replied to your messages on ResearchGate.
@@nakiguler I appreciate your kindness Sir. I will check it up. Thanks.
where can we find the Simulink file?
It was great. Thank you.
great job 👍🏽👍🏽👍🏽👍🏽 i suggest you to do lithium ion battery charging circuit using constant current constant voltage charging method with boost converter for next video! thank you
Thanks, I may think about this.
in your Code (MPPT function) :
Undefined function or variable 'Vold'. The first assignment to a local variable determines its class.
It should be defined as “persistent”.
Hocam cok teşekkür ederim cok faydalı oldu. sormak istediğim akım daki bu dalgalanma cok değilmi, yada normali bumudur. Kolay gelsin
Hi, When are you posting the next video. Maybe on interlinking two nanogrids and study the power flow control between them.
Thanks for the suggestion, I will think about that.
Thank you sir for video, could you please tell me if there is any video related to this circuit
Sir, Could you kindly suggest a few research papers that I can refer to learn the control algorithm and system design?
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.
Thank you sir for your return and contribusion
Thank you very much for this video ,i have a question that i want to add a grid for the reason to make a
compensation for my load please can you hope me for that ..thank you
Thank you so much!!! I'm having Solar energy this semester, and this is really helpful!! Are you using some document, or can you give me the formulas?? Anyway amazing job you have a new subscriber!
Thank you Joswar, I didn't use any document. Which formulas?
I did as you said in the video but I want to increase my voltage to 400 volts but it is not increasing no matter what I do (like capacitor, inductor and resistor values). Could you please guide me how to increase the voltage?
سلام ممكن سؤال
hello Naki Guller, I appreciate your great efforts. I have a question regarding the sampling time of PI controller which is ten times greater than the other, Can you plz explain why??
thanks in advance
I think is to avoid saturation
Hi, is there a way to add a supercapacitor to this to increase the efficiency?
I have no experience with supercapacitors.
Hi Guler! can you make a video on Pv frequency analysis and improvement of Pv frequency stability?
for standalone or grid connected?
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.
Thank God with voice nice video
thank you sir..... i dot his project step by step but i have error message :
The sample time 1e-05 of 'a121/Add' at input port 2 is different from the sample time 0.0005 of 'a121/pi_s1/Saturate' at output port 1. Consider inserting a Rate Transition block between the two ports. Alternatively, you can control the diagnostic action for unspecified rate transitions by changing the option "Multitask (or Single task) rate transition" on the Sample Time Diagnostics pane of the Configuration Parameters dialog box.
what i can do????
Hi, it seems there are different sampling times used. Could you say which block is highlighted after this error?
How to set the Kp and Ki for both PI controllers? That is based on what?
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.
hello sir, what is the indicator that states when the battery is full during the charging process and states the battery is empty during the discharging process?
Hello, it needs a management algorithm. So you should define stop points for operating areas.
Great effort sir! Can you tell me what is the control scheme that you've used for the battery? Any specific name?
Hi, I have no idea about the name of the control method. I don't know is it in literature.
sir, based on the ouput how to know if the Ppv is enough to supply the load? how much is load for this configuration?
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.
Sir, why we need RC for pv and battery ?
Thanks for this video sir. How can you help with the MPPT Control. I have 2018b and you are using 2019a. It prompted me to save in an earlier version but don't have anybody around me using 2019a. Hope to have a help from you
Hi, I added it below the video. disk.yandex.com.tr/d/H7a8RM33ZBAc-g
Hello.Can you make a video to combine the pv connected to the grid but at the same time connected with a battery for self consumption?I am working on a household microgrid which will use energy both from the grid and from the battery depending the weather
Me too
wowww. i am loving it. please do you have one with all component integrated. from solar panel to a AC ( thus panel.battery, controller, inverter, load
If I connect multiple sources (more PVs, fuel cells, wind turbines) around the load it would work (charge the battery faster)? It is not working in my model
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
Thank you for this video sir.Just one question I tried to simulate and my PV output keeps oscillating around 48V.Do you see any reasons for that.I am using Matlab2021a where the soltech 215p module is unavailable.Could that be a reason? Thank you for any kind replies
enter the panel characteristic in the PV array properties
Because the load is required of 48V as defined
Merhaba , yararlı video için çok teşekkür ederiz.
Enerji depolama sistemlerinin optimal yerleştirilmesi ile ilgili çalışmanız var mı acaba ( MATLAB)
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, i wanted to ask.. How if we replace the PI controller for the battery with PID controller? What will be effect? Is it will improve?
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.
hi, thanks for your videos. I had a quesion. If the PV power is same as load power then the battery will charge or discharge?
Is there any way to disconnect the battery if the pv power is same as load power
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
Please, show in details by integrating Grid , PV and BESS as a backup.
Sir, can you please tell me how you include the mppt controller function to the simulink
You may use matlab function block. Also you may find the algorithm below the video.
Please why did you choose 48 as value of vdc ref and how did you calculat the Kp and Ki for the pi controller
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.
Very nice video, where can we download the MPPT_Kontrol algorithm?
Dose this Battery control can be added to PV-Wind system ?
of course, possible.
And why the Ppv fluctuate when we change the irradiance?
It's normal, the Ppv change because Ip change depend on the irradiation.
But the Vbus should stay contant reagardeless of the irradiation
Hello Sir, How can I control Charge/Discharge Battery? Thx
Hello, your video is very informative, can I ask how you chose the R, C & L values? As well as battery? My PV is designed for 200V so what values shall I use? is there a way to calculate
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).
How a PI Controller converts input voltage signals to a current signal?
If it structured such this type, it works like a regulator. So, its output is just a generated value for reducing the input error.
thank u sir >> can you make implementation of PSO algorithm MPPT
Good and keep showing up,
Please, can you make an islanding microgrid , grid disconnected by the fault and the load will supply from the PVarray and the battery , but the battery will supply when the grid disconnected you can do that through control between the battery and the fault from through harmonic analysis
Hi, it may complicate to show by a video.
i cannot switch the goto when i copy it the output and inputs anybody can help
How did you find the PI value for both converter ?
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.
Hello Sir, if I want to make the output voltage of PV constant without the battery by keeping mppt algorithm how I can acheive that? Thank you
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.
Hello sir, may I know the inductance and capacitance values if we want vbus at 400V instead of 48V?
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: ua-cam.com/video/SJip7cESEcg/v-deo.html
Part 2: ua-cam.com/video/62yZLJoR0ao/v-deo.html
Thank you very much for your kind information, sir
Thank you very much.
Thanks for your interest.
That's really helpful, thanks a lot.
i did not open for yandisk can you put in google drive the matlab file kindly
sir , I really hope you answer my question, I did the same simulation but didn't have the same results !! the problem is when I tested the very first part PV +boost+load+MPPT the current "Ipv" is a sequare signal and takes negative values also. what do you think the problem is ?
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??
sir when i compile the first PV part , i got a message ' please change your current directory to a writable outside of the MATLAB installation area'
What should i do sir?!
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.
may i know what version are you using?
2019a
We hope, that you made a vid on calculation of PI value for controllers
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..
Thanks
Please, can you make video about the closed loop control of Cascaded H Bridge multilevel inverter ?
Hi, I may think about this. Thanks.
what is version in describe of video ?
Thanks for the tutorial and please can you help me with my simulation because I have problems
Hi for some reason my battery doesn't charge no matter what I do. Any specific reason ?? (I am using 2 parallel PVs)
Hi, you may check the control of battery side. Especially check add blocks +/-.
Awesome, thanks for your help.
How you decide the value of inductor and capacitor of bidirectional converter??? Reply
I didn't calculate these. I will make a video about it...
能分享一下这个模型嘛？
Plz can u provide me the mppt video link?
Are you using matlab R2020b or R2021b?
I am using 2019a.
is there any reference paper for this work
Thanks man...it was a very informative video.I simulated your control algorithm in my model to obtain the results. But, when I am keeping the initial SOC of battery as 100% and solar PV is supplying power to the load, in that case also, the battery is consuming power. I think the battery being 100% charged, should not consume power. Could you or anyone help me with this..
@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
Sir pls help me for doing simulation of seven bus ac dc hybrid nanogrid system for PV and battery storage based futuristic building