Do u have any video realated to the topic of "Three-phase multilevel inverter for grid-connected distributed photovoltaic systems based in three three-phase two-level inverters"
Hi can you tell me what papers have you referred for PI controller design values as prof is asking to keep the exact values and simulate instead of taking it randomly.
Hallo. Firstly set the value of the desired output eg 20A in our case. Then choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. Thank you for the support.
@Electrical_Simplified You are right. For a linear system, you use a transfer function, but for a non-linear, a gain tuning method was used in this case. How do you design yours?
thanks madam ... but I was following the whole video I couldn't find your the desired sinusoidal output...would u mind sending me the simulink slx file please
@@pmctech1415 I got the problem...it was on the goto of alhabeta position.... it's not on the dqo rather it is on αβ0 ...I think it is better to fix for other viewers to consider in the comment section
Hallo. Firstly set the value of the desired output eg 20A in our case. Then choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. I will try to make a video on that one. Thank you for the support.
Hi, I have followed your tutorial and made some adjustments to my own design. But, I cannot get the desired current output waveform. Is there any way that you can help me? Should I send you my file?
When we connect a PV Array in the place of DC source it shows an error saying Derivative of state '1' in block at time 0.0 is not finite. The Simulation will be stopped Please tell how to solve it
The circuit has a constant DC source. If you wish to design a variable input DC source, then you have t design a controller for the input source, The Current controller might as well change a bit
Hello, I saw your video on the modelling of an active triphase rectifier and I need help with the simulation of some models on simulink, which I have to hand in next Saturday at the latest and I would be prepared to pay you if you can help me. Kind regards
Hi, I connected all the circuit as you made, but when I run it there is an errors like I should connect the third ports of demux and the out1 and out2, you didn't connect them in the video so what's the problem can you help me,please?
I hope I do understand your question. For the demux, you have to make sure that the number of inputs are equal to your outputs. The other outputs where there are no connections you can terminate them using a terminator or you might just leave them as they are not affecting this circuit in any way.
@1jj9 I've not used 2017a before, but I have used 2015a, and most tools were there. I don't expect so much difference between 2017a and 2018a. The differences should be very minimal
Go in the Simulink Library and search for PLL in the search term. From the communications system toolbox select the PLL which is written as PLL (3ph) with abc input.
Hello. Firstly, set the value of the desired output, eg 20A, in our case. Then, choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. I will try to make a video on that one. Thank you for the support.
@shilpa dandwani OK, so basically, it's just tuning of the promotional gain and the integral gain. Because it is non-linear, it's not easy to tune automatically using MATLAB so you tune the Kp and Ki to suit your system requirements. I hope it's clear now.
Thank you for the support. Generally the input to the PLL is the voltage, however it is in alpha beta and needs to be transformed into dq and the phase wt is required for synchronization. The angle wt is again the output of the PLL therefore creating a feedback loop.
@@pmctech1415 Is that your goal? To create a sink ? Have you been able to layer on a votlage control loop and a droop controller in grid connected mode?
Thank you so much this really helped, you really saved my day stay blessed
Thank you for support
is the voltage measurement at grid side, phase to ground or phase to phase
It's phase to ground.
@@pmctech1415what is the real power?how do you know
Thank you mam
For same rating i want design for 400v dc input so what i need to change?
Do u have any video realated to the topic of "Three-phase multilevel inverter for grid-connected distributed photovoltaic systems based in three three-phase two-level inverters"
Hello, no, not yet.
@@pmctech1415 Thank you so much, cause i need this for my final report :((
The current in my simulation it's not what we're expecting.. can I email you with my model?
Yes you can
Same, I also got unbalanced current
@@VishalKumar-ic7su you can send your model on my Facebook link.
hello did you figure out what caused the current imbalance?
@PMC Tech
Can you make a video on multiple parallel-connected islanded droop-controlled inverters?
Hello, tu for your video, i have a question how did you calculate de gain in the current controller? 11,7?
The gain tuning method was used, where Kp and Ki were varied accordingly.
Hi! For current controller, how do you determine or calculate the constant values? Thank you
The constants should be in the range of the inverter current. For this design, the inverter current was about 14A.
Hi! Will also like to know how you calculated the P and I values for PI controller thank you:) @@pmctech1415
@@Elizabeth-bt7nk The P and I gains where achieved by gain tuning method, where you tune the values of Kp and Ki until stability is achieved.
Great explanation, what if i want to make a continuous PLL considering 5% of 3rd harmonics at 150Hz and 5% negative sequence?
Hi Thanks for the informative video. Could you tell why you add Iq times reactance and then Vd to the PI output?
This is done so as to decouple the coupled components due to the inductors. This is done so for easier control
How do we choose the value of the constants for the current controller design?
The constants should be in the range of the inverter current. For this design, the inverter current was about 14A
thank you so much for the tutorial, madam. Can you tell me how did you choose the filter parameters, please?
ua-cam.com/video/anz5azfvh-0/v-deo.htmlsi=v5QzfGnWGMoU0lwq
@@pmctech1415 thank you, madam.
Hi can you tell me what papers have you referred for PI controller design values as prof is asking to keep the exact values and simulate instead of taking it randomly.
The gain tuning technique of tuning Kp and Ki was used.
Can you share the material for that
Thanks for the reply
@@mohithvepa3118 ieeexplore.ieee.org/abstract/document/10072280
How you got Kp and Ki values
Hallo. Firstly set the value of the desired output eg 20A in our case. Then choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. Thank you for the support.
That's not how you design a controller... lol...
@Electrical_Simplified You are right. For a linear system, you use a transfer function, but for a non-linear, a gain tuning method was used in this case. How do you design yours?
Your filter transfer function is the plant. Actually I'm writing a paper on this would like to connect with you for more discussions
@@Electrical_Simplified Interesting, I will try that. My email address is pmctech1415@gmail.com
hello maam.. may i ask you a question?can i use this design and incorporate it into the hybrid active power filter?
Are you trying to connect the active rectifier together with the inverter? If so, yes, it is possible.
Thank You very much for this informative video. Can you make it with Three Phase and Five Level Grid Connected CHB?
Why are we not getting a sinusoidal waveform as inverter voltage
Kindly check @29:36 minutes. The inverter voltage waveform is not sinusoidal
Thanks for the reply. Can u please provide me any material regarding the inverter and grid design?
Why u have provided a gain of 2/780 along with Triangular pulse wave of 10kHZ for PWM Generation Plz sir Explain.....
This’s amazing, well done madam 😊
Thank you
CAN YOU TELL WHY YOU TOOK -20 AS CONSTANT IN CURRENT CONTROLLER PART
thanks madam ... but I was following the whole video I couldn't find your the desired sinusoidal output...would u mind sending me the simulink slx file please
Thank you for watching. Kindly watch to the end, the sinusoidal outputs are there.
@@pmctech1415 I got the problem...it was on the goto of alhabeta position.... it's not on the dqo rather it is on αβ0 ...I think it is better to fix for other viewers to consider in the comment section
Thanks for the simulation. Yes it will be better if you mention it
I'm very curious about this structure, how can I understand the situations where the network is cut off?
Sorry, could you please paraphrase your question?
Please make a video on three phase v2g with bidirectional power flow
Thank you so much for the video! Could you d a video showing how you came up with the K values for the PID contollers?
Hallo. Firstly set the value of the desired output eg 20A in our case. Then choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. I will try to make a video on that one. Thank you for the support.
It will bw very helpful is you let us know how to choose the values@@pmctech1415
@@pmctech1415you only increase kp and keep ki zero?
Thanks for this video, please could you tell us how did you design the PI controller parameters and also the filter components
The PI controller parameters were achieved by gain tunning method. For the filter design I may have to do a video. Thank you
Is this grid forming inverter?
Hi, I have followed your tutorial and made some adjustments to my own design. But, I cannot get the desired current output waveform. Is there any way that you can help me? Should I send you my file?
Thank you for the support, what kind of adjustments did you make. Is it the parameters?
Hi did you manage to get the desired output?
When we connect a PV Array in the place of DC source it shows an error saying Derivative of state '1' in block at time 0.0 is not finite. The Simulation will be stopped
Please tell how to solve it
The circuit has a constant DC source. If you wish to design a variable input DC source, then you have t design a controller for the input source, The Current controller might as well change a bit
The out put current of inverter is unbalanced and coz of that its dqo values are coming wrong. can help me into this?
Share your model on pmctech1415@gmail.com
Export the model to version 2018a
Hello,
I saw your video on the modelling of an active triphase rectifier and I need help with the simulation of some models on simulink, which I have to hand in next Saturday at the latest and I would be prepared to pay you if you can help me.
Kind regards
Kindly email me @ pmctech1415@gmail.com
How to tune pi values?
Iam not getting the inverter current waveform as you get. can u help me in this?shall i send my file?if so to which mail i shoul?
Hello, you can send it to pmctech1415@gmail.com
I sent
Hello, the system you implemented is a different system with a different control algorithm from this video. Kind regards
Hi, I connected all the circuit as you made, but when I run it there is an errors like I should connect the third ports of demux and the out1 and out2, you didn't connect them in the video so what's the problem can you help me,please?
I hope I do understand your question. For the demux, you have to make sure that the number of inputs are equal to your outputs. The other outputs where there are no connections you can terminate them using a terminator or you might just leave them as they are not affecting this circuit in any way.
Thank you, there is no more errors, but the problem now is the waveforms aren't sine waves, what's the reason?
What can I use instead of "mod" block?
Sory, I'm not sure on this one
IS THIS SRF PLL?
Yes, the control has been implemented in SRF
I am also trying to control but vref is not coming. Could you help me
Hi, share the model on pmctech1415@gmail.com
What abaut grid harmonics?
They are taken care of, and they are less than 5% as per IEEE recommendations.
@@pmctech1415
In the simulation, the grid was treated as pure sine, and if the grid had harmonics, the THD would have been greater than 5%.
Which version of this program?
Version 2018a
Are all of these tools available in the 2017a version?
@1jj9 I've not used 2017a before, but I have used 2015a, and most tools were there. I don't expect so much difference between 2017a and 2018a. The differences should be very minimal
Mam
I use MATLAB 16a
In my MATLAB mod (PLL)can't find
Go in the Simulink Library and search for PLL in the search term. From the communications system toolbox select the PLL which is written as PLL (3ph) with abc input.
@@pmctech1415 Then, isn't it necessary to model PLL design that you modeled in the video if use PLL(3ph) block ?
@@akilawickramanayake1995 if you want you can use the one in simscape but it increases %THD
Why kp = 10 and Ki = 4000 choosen ??
They are tuned by the gain tuning method. You start with a small gain value of kp, and ki until you reach stability
Thanks mam
Thank you @Engineering Engineering Solutions EEE
Mam by which MATLAB you done this simulation.
@@engineeringsolutionseee3362 am using Simulink the version of MATLAB is 18a. I hope that answers your question.
how to decide kp and ki values
Hello. Firstly, set the value of the desired output, eg 20A, in our case. Then, choose a small value of Kp and set Ki to zero. Kp increasing the value of Kp until you reach neutral stability. I will try to make a video on that one. Thank you for the support.
Thank you, but yet not clear
@shilpa dandwani OK, so basically, it's just tuning of the promotional gain and the integral gain. Because it is non-linear, it's not easy to tune automatically using MATLAB so you tune the Kp and Ki to suit your system requirements. I hope it's clear now.
Make a video as soon as possible
@@pmctech1415how do we know linear and non linear
Can you provide ieee paper for this model
pmctech1415@gmail.com
May i get the file of this inverter?
I encourage you to watch and try to simulate the model. It won't take you long but you will earn more.
You gave wt as input to PLL blog and again you got wt as output. Isn't this wrong?
Thank you for the support. Generally the input to the PLL is the voltage, however it is in alpha beta and needs to be transformed into dq and the phase wt is required for synchronization. The angle wt is again the output of the PLL therefore creating a feedback loop.
Please Share the file
You are drawing 20 amps from the grid, you ar not supplying it.
Yes, sure.
@@pmctech1415 Is that your goal? To create a sink ? Have you been able to layer on a votlage control loop and a droop controller in grid connected mode?
How to calculate LCL values?
Check this link to design an LCL filter ua-cam.com/video/anz5azfvh-0/v-deo.htmlsi=gewQ2Pc9Yz9QQzZM