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Simulation of 3 phase grid connected inverter using MATLAB with dq Control.
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- čas přidán 8. 07. 2020
- in this video i am briefly explaining the basic synchronous reference frame control theory of three phase grid inverter, and its complete simulation using MATLAB. Feel free to post your doubts in the comment section, or you can reach me at ashacademy01@gmail.com. if you like my work, please consider subscribing to this channel. Thanks for watching.
If you like my work, please consider subscribing to this channel. Thank you. czcams.com/channels/58DFky5Fm9AxH9UmWHHYmQ.html
thanks so much and please connect PV to this simulation show us how to implement it
@@Francies1004 already there. please go through my channel
Great Work....Can you please tell that how can I calculate the Distortion factor, switching losses and efficiency of inverter?
how to solve this type of errors:"Error in port widths or dimensions. Output port 1 of 'GIdq/From10' is a one dimensional vector with 3 elements"
@@tvHallo have you got the output?
Amazing step-by-step guidance Thank you.
Glad it was helpful!
thanks buddy your videos are helping me alot completing my project work 😍😍😍😍😍😍😍😍
Glad it helped
Yo @haripandey1740 what is your project work?
design and simulation of upfc
Sir, please make more videos on interleaved DC DC Converter (Buck, Boost, buck-boost) using multiple IGBTs. It will helpful for us. If you include those topics in your channel it will be exactly pack of knowledge.
thanks by your work , this is a great content. I did it and it is working perfectly;next step I find will find out your methods to get different values then I will try to do the same simulation with 04 inverters connected to the grid using LQR
Hello can you send me your model
Excellent work..!!!
Nafis Subhani thanks brother
Thank you so much for your explanation
Seems you're giving detailed explanation for simulation, fine. You're mentioning abc to alpha-beta as park and alpha-beta to d-q as Clarke, which is wrong. Abc to alpha- beta is Clarke transformation and alpha-beta to d-q ia park transformation. Pls correct this
The best video i have seen so far and it will stand a taste of time. In the Alpha-beta-zero simulink block, what are the effect of choosing 90 degree behind phase A and aligned with phase A axis on simulations?
THANK YOU FOR YOUR VIDEO. VERY HELP FULL
Glad it helped
Great work sir
Really good !!
One more question, how did you select the gains for proportional controller. Was it by trial and error or some other calculations.
The gains could be calculated based on different controller tuning methods. Based on a literature review: the inner current controller gains are calculated based on Modulus Optimum and the Outer Control loop controller gains are calculated based on Symmetrical Optimum methods.
What is the equations for it?
Thank u very much!
nice job, keep it up!
Some following questions:
Did you implement current control loop and voltage control loop in the inverter?
Can you share the derivation for Ed, Eq, and how you ended up with them?
Are the Pi controllers working in the digital domain?
If the inverter requires a constant input voltage, for example while integrating with DC-DC boost converter would we need a constant supply, if not would there be any issues?
Will the inverter provide the same AC voltage as the grid if the DC input to inverter is changed?
Lots of small small things are missing. How do you get an active current reference as -205?
Nice one and excellency explained.please make any simulation video based on Micro Grid and reactive power control through any Facts devices.
Thank you.
micro grid will be doing later. statcom i have already made
incredible content!
Thank you for your video sir. I was wondering what is the different between current control and voltage control grid connected inverter, can you explain it to me sir?
Thank you for sharing your knowledge, can you please share the article or textbook from where you got these controller parameters and theoretical concept
Sir Plz do video on virtual inertia control of microgrid
Hey..Iam also working on virtual inertia in microgrid.
It was indeed a nice one. I was wondering whether it is possible to enter reference active power and reference reactive power instead of reference current in the DQ frame. Also, it would be great if the Simulink file could be shared by a link.
you can contact me via email for the file. instead of current you can enter the power referenes and it is possible
@@TechSimulator but with payment too right.Everyone do for payment nowdays
Hello sir, Thanks for good uploading, However I have some droughts like why you are not using PLL(3-phsase block) and why you are not using abc-dqo transform directly. similarly why you are not using universal bridge and PWM generator(2-level DC-DC) block . I will be thankful to you for your reply.
Thank you teacher
GOOD JOB BRO keep going
Thank you
Very good explanation an expert simulation kindly let me know how can we plot the output frequency of this inverter in Matlab that is 50 or 60 HZ.
Please make video on design of PI controller and how to calculate values of Kp and Ki
Calculation of kp and ki is different for different circuits. And it is always difficult to find a single equation that can be applied for any circuit. And some times we have to do the trial and error to find the values.
Why are Ed and Eq outputs of two different operations in the block diagram? Wouldn't this cause some contention?
-According to the left-hand side, Eq=Vq*2/VDC and Ed=Vd*2/VDC
-According to the right-hand side, Eq and Ed are V_alpha and V_beta converted into dq coordinates
This leads to another issue. Vq and Vd are also defined by different operations.
-According to the left-hand side, Vq=Uq+Eq-LwId, and Vd=Ud+Ed_LwIq
-According to the right-hand side, Vd=Eq and Vq=Ed (V_alpha and V_beta converted into dq coordinates)
This last point is a contradiction, since they cannot be equal to two very different equations.
Can you please provide some explanation for this? Thank you!
Did your model work ?
Sir why we are not connecting pi-controller to Ed and Eq side.why the arrows are leaving like that in explaination circuit diagram.
sir, why you sum Ud+Ed+ LwIq??
If you've already found this information, please, can you share it with me?
Amazing!!
Thanks!!
thank you, sir
Welcome!
Tech Simulator
I hope next time adding Decoupled PQ Control to the same system to control Id&Iq automatically after applying different cases in load side .
sure. i will try that
@@TechSimulator really I appreciate that and I'm very enthusiastic to see it. thanks a lot
I tried the simulation but I couldn't get the exact results like yours. Can you help me out? Also, can you explain further about the gain value "2*pi*50*1000e-6" and what method you used in finding PI controller values (Kp and Ki)
Hello Dear Eshan I have the same question on finding PI controller values can you please tell me if you get the answer?
@@tarikuataye4299 Can you tell me you solved your problem?
Hello Sir in the PLL block is the a specific method you used to calculate for Ki and Kp ?
Incredible👍👍 .......Can you tell me the whole measures you taken to build this simulation .....how do you calculate diffrent elements .....is there any procedure to design the inverter and control signals .....pls help me
i have made a separate video for lcl filter design.
Sir please connect non-linear load to show before and after using filter
I followed the procedure step by step but my current is too much and unsymmetrical about the time axis
Me too
Sir for implementation which ICs you have used ??? Can you please elaborate?
which IC you are talking about?
@@TechSimulator can I get the report of this project please?
@@TechSimulator
He actually wants to know about practical implementations of this project which components/IC we need to do this on hardware.can you guide??please help me i am your subscriber and lover.
Dear Sir, can you tell me if dq control is the same as droop control?
Sir please explain the synchronous frame theory and why we r using that theory for inverter controller...??
Explain the complete theory would be difficult. But i can answer for other question, that is why we are using it. The simple reason is that we can seperately control the active and reactive current. Another reason is that all control variable are in the DC frame, so by using simple PI controller, we can implement the complete controll algorithm
Can u do simulation of wind turbine connected control
I havnt done it yet. Will surely see if i can make one
Sir .I have error in alpha beta block in port dimensions ,Plz help
Great video, can you check the DC link control ? It looks like there is a a big steady state error
Why do you set the inductor value to 500uF and the capacitor value to 100uF? And Why do you set the Three Phase Source Voltage to 415 (VLL-RMS)?
Sir can u plz explain in detail the working of current controller ...
Hey Amir Reyaz
Have you understood the current controller
Thanks
Thank you so much for appreciating my work
Thankyou for this video.
Plz tell what happen when we connect load of balanced or unbalanced or non linear load to it.
And Sir I have sent the email to you regarding some other query. I request to kindly reply.
why -205 is kept constant. And can you tell me how the values for Kp and Ki for the voltage and the current?
I want to implement a simulation with DSTATCOM that uses the 3-level cascade multilevel inverter that is, with a single H-bridge but with the control based on synchronous reference frame to mitigate the total harmonic distortion of a network, I see that in your video you use 6 IGBT and I want to know how to connect when I only want to use 4 IGBT. Please help
how to vary current magnitude?
Sir i sent my doubt to your mail.please try to solve my SRF control matlab doubt.tq sir. Really it help me a lot to complete my degree.tq very much
Ok i will see
Sir please check my mail sir .this is humble request. And bring all the support ing graphs ( scopes). Tq sir.
thank you for the explantion, my friend please if you can to do the matlab for the supercounduction magnetic energy storage (EMES) with inverter model using IGBT tr.
Hey, very nice video, I have a question I put a scope in wt and is look to be increasing, but if I use a block from simulink call PLL wt is always zero, that is more logic to me, could you explain me this effect?
@tech simulator
The only problem I am facing is:
When I set the solver settings to "discrete", it gives the following error:
"The "FixedStepDiscrete" solver cannot be used to simulate block diagram because it contains continuous states"
Upon inspection, I found out that the PI controller is causing this issue.
How can I eradicate this issue ??
Sir is it possible to reset the reference current for negative currents to convert this topology into a bidirectional inverter/rectifier?
Thanks for sharing
I am getting error like the dimension mismatch of wt block, demux not connected. Also, I would like to ask about how you have got active current 205A. Can you tell the source from where the values are been taken? Thanks
Can we build the same thing with a 3 phase load instead of the grid?
Good for your labor, sir, I wonder something. I wonder what should be done to transfer to 400 V and 10 A to grid. I would be glad if you help. To transfer 4 kW
Sir please make a video on the modelling of a diesel genset
I thinks it is beyond my knowledge
Sir I have tired the same simulation but my current is not sinusoidal and also value is too high about 1000 amperes. Can you help me please
please try to match the parameter of LCL filter
Sir, can you explain pmsg wind generator mppt simulation??....I have searched a lot but I didn't get any video on this plz try to make video on this topic sir.
could you tell me how to calculate Kp and Ki of PI controller
How to make real power and reactive power positive I changed value -205 to 205 values become positive but tracking signal became higher than ideal one
Can you tell me how did you chose the parameters of the repeating sequence block?
in your voltage source rms value is 415 volt and multiply by sqrt(3_ gives 586 volt but in your graph it is coming 600volt
Why you are taken negative value of active current?
sir ,in which mode, this inverter topology can be operated ?grid forming ,grid supporting or grid feeding mode?
Grid feeding
Thanks by your work. It is very valuable. I have a problem during simulation. It appears the warning: "Convergence problem when solving algebraic loop containing 'inversor/dq0 to abc/dq0 to Alpha-Beta-Zero/Subsystem1' at time 0.000117. Simulink will try to solve this loop using Simulink 3 (R11) strategy. Use feature('ModeIterationsInAlgLoops',0) to disable the strategy introduced in Simulink 4 (R12)". Would you know the reason and how to solve? I redid all the procedure. I have Matlab 2015.
Sir, can you tell me the paper name or book that you followed to draw this work.
there any somany papers available. just go through IEEE Xplore
@@TechSimulator SIR CAN U SUGGEST ME THOSE PAPERS?
did u find any papers?@@bibhudattamishra387
Can u plz implement VF control instead of PQ control..in grid connected inverter..to control V n F of grid...
why Voltage amplitude is high
How do you calculated the constants of pi controllers??
excelent work ... how I can convert this design into bi-directional dc/ac.
Yes. In fact i have already made a video on 3 phase active rectifier. You can check out that
Excuse me, Which article did you refer to for the design of your control strategy?
My simulations are not based on any reference paper. i am just sharing my knowledge. But still you can get related papers from internet.
Sir which version is used in this circuit please
Could you please make a video By using the ANFIS
Thanks alot, please can model the hyprid micro grid of PV_Wind and energy storage system on Matlab simulink
Hello sir , i am trying this but there is some dimensional error .Ed and Eq i am getting 2 waveforms in each.
Thank you very much. I have questions if you permit me please.
Why do you divided by 2/VDC ?
Why do you set the reference current in negative ?
Of course, you can ask all your doubts.
1. For sine PWM 3 phase inverter, the relation between modulation index, DC link voltage and inverter output is given by Vd = md*(Vdc/2). Same applies for Vq also. Since our carrier triangular signal is scaled between 1 and -1, we need to convert our voltages to that scale in order to avoid over modulation. So we multiply it with 2/VDC.
2. If you had watched my previous video on PLL, there you can see that in order to generate active current reference, the function i used is -sine(angle). Here negative symbol i used because, as per park’s transformation theory, beta voltage should lead alpha voltage. But in matlab, alpha leading beta. Due to same reason, here i took current reference negative. If u take positive reference, the voltage and voltage will align 180 degree out of phase. If use any other pll u can avoid this issue.
Sir plz can you hlp in designing three phase shunt active power filter based on dq theory for power quality improvement
Sir can you make a video for hysteresis current controlled 3 phase grid connected inverter?
Hello, can i ask why id_ref set minus? -205
Would it matter if we change the initial voltages, like 800 Vdc to say 1000 Vdc would it change the other things much?
Not much. Need to change 2/800 term into 2/1000
@@TechSimulator thanks a lot. This is much appreciated
Sir ..can U please explain the model of 3 phase dual converter closed loop control by pq. Theory
bagaimana cara membuat sistem kontrol untuk multilevel inverter menggunakan metode flying capasitor?
untuk video "simulasi inverter terhubung jaringan 3 fasa menggunakan matlab dengan control dq" paas di RUN masih error pak
Can you do simulation about parallel inverter ?
Sure. Will do it later
@@TechSimulator
Thank you very much
Hi do you have any references for the circuit?
what is -205? Anyone please reply
Could you please do this control by using ANFIS
Suppose I want to design an LC filter can I do using this design principle???
LC filter for grid connected system?
when I bult this simulnk the Ir,Iy,and Ib are do not true simulated I think there is problem in PI Controller, please help me
sir how to implement for the three phase IGBTs??? Need help please
How the value of PI controllers are chosen? Plz reply
Can you tell me how to select the value of id ref in 500dc - 25kv ac system
Sir I have connected as u connected but iam not getting result it showing error at controller can u clarify it pls
Bro when i add ED EQ to abc block, i got "Error in port widths or dimensions. 'Input Port 2' of 'PICONTROL/Mux2' is a one dimensional vector with 1 elements." error . Can you help me ?
Please share the simulation
Sir, in matlab should I enter rms values or peak values in case of AC voltage source block and output in scope we are getting is rms or peak values?
in ac voltage source we enter peak value. in scope we see a sine wave, and max value of that sine wave represent the peak voltage.
@@TechSimulator Thank you Sir for your reply. Excellent videos. Please continue to post like these videos which is really very useful to many of us who are doing projects and Research. Once again thank you Sir.
Thanks for you good words.
i dont get the same output.
sir you forget to multiple 2/vdc in simulink also.
in demux you choose 3 output and take only 2 output which aries as error .
what shall i do sir. help me
pls share the model at my email id