in 8:32 i think your formulas: Vo,LN,RMS must be divided by sqrt(6) not sqrt(3) . For evidence, in your table , you take a division |Vo,n,LL| by sqrt(6) it equal to |Vo,n,LL,RMS| = 45.016!!! If you divided Vo,n,LL by sqrt(3) it must be Vo,n,LN. Can you give me this simulink matlab simulation . Thank you for your helpful video!
Thanks for your message. Glad to know you liked the video 👍 The formula for Vo,n,LN is correct, but when I moved to next slide to collect the formulas, I forgot the sqrt(2) in de denominator, so in total, it should be divided by sqrt(6). Actually, the formula should be written as Vo,n,LN where the harmonics order n is shown.
This is a nice topic I still want to discuss in detail later. Here, you can read some info about this subject: www.mathworks.com/help/mcb/gs/open-loop-and-closed-loop-control.html
@@CANEDUX thank you so much for your help , that will be so usefull .. Is there any design guideline , book that explains step by step how to design the loop and choose component .. because i really need these information for a project .
@@mohameddrissi7215 There are some books that touch on the topics loop control of power converters, but I think the application notes of Analog Devices, Texas Instruments, etc. are more to the point and practical. See this video for more info and link to resources in the video description: th-cam.com/video/p5q5jMvsjto/w-d-xo.html
HI, CAN, could you explain why i shouldn't considered the sqrt(3) for 3-phase in this particular case leading to sqrt(6) for Vo,LN. is used of value of 6 define six-steps of switching?
Thanks for your message. I do not know if you mean the formula, but I answered this already for another question in this video. The formula for Vo,n,LN is correct, but when I moved to next slide to collect the formulas, I forgot the sqrt(2) in de denominator, so in total, it should be divided by sqrt(6). Actually, the formula should be written as Vo,n,LN where the harmonics order n is shown. Does this answer your question?
@@CANEDUX yes, you re correct, you said sqrt(6) is the correct once below. I read it after asking you the question above, sorry for that. but moreover am asking why is it the case in the formula sqrt(6) also i see 6 appearing in Vo,LL in this divided by pie inside the cosine. the waveform across the loads no pie/6 but pie/3 of each phase being shifted. would you explain the concept behind it, if you don't mind it? and thank sir
yep, I see why it should be sqrt(6), you don't have to answer that part, its is clearer! that is from sqrt(2) multiplied by sqrt(3) at the denominator equal to sqrt(6) defining Vo,n,LN so nothing to do with six switches. however 30 degrees inside the cosine i have no idea since each phase is shifted by 60 degrees( pie/3).
Hi, CAN, I asked you in your pervious tutorial, about what define phase and neutral in square wave inverter, since load experience bidirectional across it. its seem like no independent phase wire then phase voltage is just alternating across the load each time.
Hello, thanks for the message. The DC input voltage is grounded and the star-connected loads are not, but when the loads are balanced than the neutral node (N) is referred to ground too.
@@CANEDUX oh yeah thanks sir, so for the 3 phase inverter, it's the same idea as dual supply source of Vdd and Vcc. where two sources are balanced sources in series hance the node between them is zero volts( neutral). but for the single stage yet this is not the case too, isn't??
thanks Sir, i completed your lectures, they are very helpful.
Great to know the videos are helpful. Share the knowledge :)
in 8:32 i think your formulas: Vo,LN,RMS must be divided by sqrt(6) not sqrt(3) . For evidence, in your table , you take a division |Vo,n,LL| by sqrt(6) it equal to |Vo,n,LL,RMS| = 45.016!!! If you divided Vo,n,LL by sqrt(3) it must be Vo,n,LN. Can you give me this simulink matlab simulation . Thank you for your helpful video!
Thanks for your message. Glad to know you liked the video 👍 The formula for Vo,n,LN is correct, but when I moved to next slide to collect the formulas, I forgot the sqrt(2) in de denominator, so in total, it should be divided by sqrt(6).
Actually, the formula should be written as Vo,n,LN where the harmonics order n is shown.
Hello sir ,
Do you have videos that shows how to design a loop control for 3 phase inverter ?
This is a nice topic I still want to discuss in detail later. Here, you can read some info about this subject: www.mathworks.com/help/mcb/gs/open-loop-and-closed-loop-control.html
@@CANEDUX thank you so much for your help , that will be so usefull .. Is there any design guideline , book that explains step by step how to design the loop and choose component .. because i really need these information for a project .
@@mohameddrissi7215 There are some books that touch on the topics loop control of power converters, but I think the application notes of Analog Devices, Texas Instruments, etc. are more to the point and practical.
See this video for more info and link to resources in the video description:
th-cam.com/video/p5q5jMvsjto/w-d-xo.html
@@CANEDUX thank you sir , i already saw this video and i found it so great by i m looking specifically for control loops of inverter to control motors
@@mohameddrissi7215 Got it, I will look at it.
HI, CAN, could you explain why i shouldn't considered the sqrt(3) for 3-phase in this particular case leading to sqrt(6) for Vo,LN. is used of value of 6 define six-steps of switching?
Thanks for your message. I do not know if you mean the formula, but I answered this already for another question in this video.
The formula for Vo,n,LN is correct, but when I moved to next slide to collect the formulas, I forgot the sqrt(2) in de denominator, so in total, it should be divided by sqrt(6).
Actually, the formula should be written as Vo,n,LN where the harmonics order n is shown.
Does this answer your question?
@@CANEDUX yes, you re correct, you said sqrt(6) is the correct once below. I read it after asking you the question above, sorry for that. but moreover am asking why is it the case in the formula sqrt(6) also i see 6 appearing in Vo,LL in this divided by pie inside the cosine. the waveform across the loads no pie/6 but pie/3 of each phase being shifted. would you explain the concept behind it, if you don't mind it? and thank sir
yep, I see why it should be sqrt(6), you don't have to answer that part, its is clearer! that is from sqrt(2) multiplied by sqrt(3) at the denominator equal to sqrt(6) defining Vo,n,LN so nothing to do with six switches. however 30 degrees inside the cosine i have no idea since each phase is shifted by 60 degrees( pie/3).
Hi, CAN, I asked you in your pervious tutorial, about what define phase and neutral in square wave inverter, since load experience bidirectional across it. its seem like no independent phase wire then phase voltage is just alternating across the load each time.
Hello, thanks for the message. The DC input voltage is grounded and the star-connected loads are not, but when the loads are balanced than the neutral node (N) is referred to ground too.
@@CANEDUX oh yeah thanks sir, so for the 3 phase inverter, it's the same idea as dual supply source of Vdd and Vcc. where two sources are balanced sources in series hance the node between them is zero volts( neutral). but for the single stage yet this is not the case too, isn't??
It depends on how what you define ground in the circuit.