They allow for sloppy design. I did not have scope back then, and during development I burned bunch of mosfets. This caused arduino to die as well. So I just protected myself this way which allowed me to debug issues by trial and error.
Do you know If the compact high power spindle motors from china are BLDC motors ? It says 1.5KW, 220V, 400Hz/24000rpm and has at least 4 wire connections so must be star winding. People use them with a VFD for CNC machines. I ask because I want to build it on my own for learning experience. Should be similar to your circuit right ? Only Mosfets IRFP460 and rectified mains instead of 12V
Thanks for this video. I 'm currently designing a 144 Vdc @ 100A 6 phase inverter (driving a 2 stators motor). I'm actually uncertain if I should galvanized (or isolate) the 144 Vdc of the 5 Vdc electronics (no commun ground) ? Can you share your thoughts on galvanization the powers.
Hi, AFAIK in commercial applications only communication is isolates from mains voltage. Perhaps some drivers with expensive parts on low voltage side are isolated as well, but these tend to be optimized for cost, so there is little to protect. I guess your phase driver chips would be most expensive and likely have integrated low voltage inputs with external bootstrapping or support circuitry. So if driver has comm like serial or whatever, isolate that. If driver is directly connected to some PC output (would be wtf driver, but I don't judge) isolate that. Or do "risk assesment" and if there is nothing worth protecting, just don't do it.
Hey, thanks for this coherent video! I had a question, for PWM the Arduino boards cannot provide high frequency like 30-40 kHz. But most high power motor requires this frequency, how can we achieve that?
Arduino can proivide high freq PWM. I was using around 40 kHz in this project. To achieve this, you have to get CPU datasheet, and set up registers yourself. Alternatively, I am sure there will be some library to do this for variouc models for you so you don't have to dig through datasheet, but hey, you will have to dig through docs for library... I haven't used such library so I can't recommend any.
Hi. I am designing a driver for 5kw ac induction motor rated 3000 rpm at 100Hz. It is operated by 48V battery and S2-60 min. Is it possible to use the design above, offcourse changing the mosfets ? It also has A/B Encoder for feedback.
@@IlusysSystems The 3 identical parts (drivers) in the circuit can i use one part of it? for single phase induction motor? Can snubber circuit can be used with microcontroller to control the speed as well? would really appreciate your help.
@@bilalqasim2555 I am not sure. it may be the case, that single phase induction motors will require relatively smooth sine wave to work properly. This driver is not quite equipped to do that. but possibly could be modified. perhaps only in SW but as I say I am not sure
@@shanawarchughtai6476 Mains voltage circuits are obviously more complex, because of necessary safety for human and also for componenct, because they are expensive. Unfortunately I don't have too much experience with these kind of circuits. Good experience that is, I have some bad experience though :) Only thing I can tell you as an advice is read carefully through datasheets and application notes. You should be able to learn to design good product that way.
Please make more videos of this type. I am so happy find this video and your explanation of every part. You have done a very great job
the best video I have ever watched so far in the youtube!!! serious...no exaggeration
Hi. I wonder what’s an advantage of using optocouplers? It seems all parts can share a same gnd, and gate drivers are 3v3 compatible
They allow for sloppy design. I did not have scope back then, and during development I burned bunch of mosfets. This caused arduino to die as well. So I just protected myself this way which allowed me to debug issues by trial and error.
@@IlusysSystems Aha! That was very smart. Thank you for the info.
Do you know If the compact high power spindle motors from china are BLDC motors ? It says 1.5KW, 220V, 400Hz/24000rpm and has at least 4 wire connections so must be star winding. People use them with a VFD for CNC machines. I ask because I want to build it on my own for learning experience. Should be similar to your circuit right ? Only Mosfets IRFP460 and rectified mains instead of 12V
Are the coils delta or strar?
Thanks for this video. I 'm currently designing a 144 Vdc @ 100A 6 phase inverter (driving a 2 stators motor). I'm actually uncertain if I should galvanized (or isolate) the 144 Vdc of the 5 Vdc electronics (no commun ground) ? Can you share your thoughts on galvanization the powers.
Hi, AFAIK in commercial applications only communication is isolates from mains voltage. Perhaps some drivers with expensive parts on low voltage side are isolated as well, but these tend to be optimized for cost, so there is little to protect. I guess your phase driver chips would be most expensive and likely have integrated low voltage inputs with external bootstrapping or support circuitry.
So if driver has comm like serial or whatever, isolate that. If driver is directly connected to some PC output (would be wtf driver, but I don't judge) isolate that.
Or do "risk assesment" and if there is nothing worth protecting, just don't do it.
Hey, thanks for this coherent video!
I had a question, for PWM the Arduino boards cannot provide high frequency like 30-40 kHz. But most high power motor requires this frequency, how can we achieve that?
Arduino can proivide high freq PWM. I was using around 40 kHz in this project.
To achieve this, you have to get CPU datasheet, and set up registers yourself. Alternatively, I am sure there will be some library to do this for variouc models for you so you don't have to dig through datasheet, but hey, you will have to dig through docs for library...
I haven't used such library so I can't recommend any.
good!
Thanks for the video
Thanks for the comment
I mean, you are welcome :)
Hi. I am designing a driver for 5kw ac induction motor rated 3000 rpm at 100Hz. It is operated by 48V battery and S2-60 min. Is it possible to use the design above, offcourse changing the mosfets ? It also has A/B Encoder for feedback.
Not really, this is obviously low voltage design with Vmax less than Vgs of mosfets
hii sir, what kind of voltege source on your video sir ? and how much the voltage source sir ?..
thank you..
Hi, I used 12V PC PSU for this
Exelente
Hi friend ! About the DEAT TIME , can you explain It to us???
It's when both mosfets are supposed to be off, because they don't switch instantly
Can you send me schematics circuit in PDF? Congratulations for your job. Walmir Brazil
I have added file v3.pdf to shared folder. Sorry for bad organization.
380 v ac motor control ?
Sir , kindly advise to me that how to fix "TCCR4E, 'was not declared in this scope" in arduino issue issue . thanks
I believe, that TCCR4E is declared only for arduino leonardo. other models may require different setup. what's your model?
@@IlusysSystems My one is Arduino uno sir
@@MrSoe-wn9qg I found this: simple-circuit.com/arduino-sensorless-bldc-motor-controller-esc/
it's also sensorless, so that's quite nice
@@IlusysSystems Noted with thanks sir
help me
me error
exit status 1
'TCCR4E' was not declared in this scope
it's discussed somewhere in comments here
@@IlusysSystems ok for leonado board
@@IlusysSystems thanks you sir
Can you give programming code
hi i wanted to control the speed of the single phase induction motor what kind of modification can be made in this design?
you need to change frequency. Look up VFD
@@IlusysSystems The 3 identical parts (drivers) in the circuit can i use one part of it? for single phase induction motor? Can snubber circuit can be used with microcontroller to control the speed as well? would really appreciate your help.
I need to use microcontroller with mosfet/igbt to control the speed thats why.
@@bilalqasim2555 I am not sure. it may be the case, that single phase induction motors will require relatively smooth sine wave to work properly. This driver is not quite equipped to do that. but possibly could be modified. perhaps only in SW but as I say I am not sure
tpl250h
Hello, love your project. Can i get your email to contact you?
You should be able to access it through YT, but I prefer to discuss here
@@IlusysSystems I am currently building a VFD for a three phase induction motor and wanted to seek help for it.
@@shanawarchughtai6476 Mains voltage circuits are obviously more complex, because of necessary safety for human and also for componenct, because they are expensive. Unfortunately I don't have too much experience with these kind of circuits. Good experience that is, I have some bad experience though :)
Only thing I can tell you as an advice is read carefully through datasheets and application notes. You should be able to learn to design good product that way.
@@IlusysSystems thanks a million though. I hope to work my way through it.
@@IlusysSystems can this same work for 1 hp motor ? Or pls share email or any communication app for communication