Hey guys, this is not the last video of the series. We are pausing it for now, to focus on some other important concepts. A very interesting series begins next week. Stay tuned!
I really appreciate your efforts and thank you for making our life easier. Eagerly waiting for you to continue this series. Also, Could you please tell me how can I get in contact with you? Thanks again!
Hi, I am an engineer who just engaged in the test of electric vehicle motors, and I have not learned any motor-related knowledge in university. The first time I saw your video series on electric motors, I felt excited! I have never seen such in-depth motor related videos before. Thank you so much for your wonderful detailed explanation! I just finished watching the 9 episodes of this series and found that the last video was uploaded more than 1 year ago, I wonder if the series will continue? If possible, I hope that you can follow up with contents like MTPA, MTPV, position sensor, speed control, position control, PID controller tuning, current sensing, micro-controller choosing, etc. Hope to see your updates in the early future.
Great Video, have you uploaded and done the simulation in simulink to replace the inveter and svpwm and next your own pmsm model? That will be completed all your excellent video series.
Most beautiful explanation ever for SVPWM. Generally it takes an hour or two to even scratch the surface of space vector modulation, but this video made it so simple to understand, while still not skipping any part of it
I just wish you had posted this a year before😅, I literally banged my head on wall multiple times in understanding this completely during my mtech. You made it look so easy. Remarkable.!
I have a similar story. I also had to put in a lot of efforts and research all over the internet to understand SVM. I am glad that the video makes it easy to understand.
Wonderful video! and the hexagon was a cube??? thats surprising. Would love to see many more of such videos. It would be great to see some specific motor control strategies, mtpa etc.
Such a complex topic, but organized delivered and summed up in a great way. You bought me man. P.S: Keep the complexity level high enough, because basics could be found in any video!!!
Another very important considerations for practical motor control for EV is Flux Weakening for wider speed range and MTPA method since lot of applications are coming up with IPMSMs
Hi Thanks for explaining so beautifully. I do have question within last and this video. Va,Vb,Vc that we calculate using motor controls, are they VA,VB,VC or V_AN, V_BN and V_CN for the inverter output?
It is a humble request that could you please do the matlab simulation related to this Topic SVPWM TECHNIQUE as you mention at the end. Sorry for the inconvenience
Hi , I was able to implement all the necessary functions for motor control - FOC , SVPWM for greater bus voltage. However while testing the vehicle escooty on load , I observed that my phase strips radiated so much heat , the solder melted. Is there any formula to calculate the dimensions of the cu strips that can be used for safe operation at load. I have limited dc current at 35A and phase at 100A rms I've already enclosed all pcb in metal enclosure.
Find the resistance of the copper strip (you will get online calculators) - find the heat loss - then the thermal conductivity and calculate the rise in temperature. There is no standard procedure. You need to test it and then re-design if needed.
Ann, I have not done the calculations for the delta connected load. But I am sure you can do it by yourself - the technique remains the same as mentioned in the video.
Cool video. In Microchip's guide for SVM, it mentiones that SVPWM can give up to 86.6% or 3*sqrt(2)/2 * DC link voltage. Any idea how this number can be found and how is this associated with our Va - Vn = 2/3 Vdc ?
Hi, Can you please guide me how can we take care of gradient noise in electric vehicle. When my vehicle is on ramp or it moves slightly back , when i give throttle, a lot of noise is observed , kindly guide how to take care of this condition
•Hi I am using INA240 to measure phase currents, it has a gain of 20. I am using a 0.5 milli ohm shunt to measure phase currents. I have seen in application notes that we add 1.65 V offset. •Can you please guide me on how much max. current i could measure using them. Also, I am doing calculation in pu unit in my code where 1 pu = 32768. •How can I integrate current sensing data with my FOC calculations in pu ?
1.65V is added so that we can measure the AC currents (ADCs cannot measure negative currents so you offset them). For max current calculation - i*Rsense*Gain = 1.65. This will give you the magnitude of the current waveform. For PU measurements - you can take the scaling factor to be the value you got from the above calculation. For FOC, you will have to also calculate the reference value in PU and that then use the PID controller. (Note - you will have to offset the measured values again in the controller). I hope it answers your question.
Hi . I know we use concept of field weakening in foc to go beyond rated speed. Can you please guide me how can we achieve the same in sinusoidal commutation?
I have not tried it. Field Wekakening in FOC is nothing but creating a phase shift between phase current and back-emf. You can do the same in sinusoidal modulation as well. You need to command current which is phase shifted from the encoder position. You can do this using look-up table method.
Hi, I am working on a 10KW induction motor drive project. It's specs are 72V/10KW/145A rms rated current and 450-500A peak current. I guess I can't use INA240A1 here as it has a common-mode voltage limit of 80V. I can't go for INA149 as it needs dual supply. Hall current sensors and Current transducers are an expensive solutions. Kindly suggest some appropriate solutions. Thanks.
Hi Pujit, It depends on a lot of things - whether you are okay with leg sensing or you want phase sensing only - 3 shunts or 2 shunts, placement(size), cost, layout, thermal, etc etc. I will not be able to suggest something unless I know your requirements and design. We can discuss this further through email - contact@thesubcooledmind.com
You should check out the Part4 of the series again: th-cam.com/video/8uVRpYuGTx0/w-d-xo.html. All the information required to simulate dq and alpha beta is given here. And you will learn things much better when you do the simulation yourself. Give it a try.
Can you please put the english subtitles? English is not my first langage. I find this video very interesting but there are parts that I am missing because I don't get everything
Pardon me, but I still don’t understand the part about u,v,w waves + triangular 3rd harmonics order, ain’t it only sinusoidal wave 3rd harmonics in the nature? Even if you use any devices to produce triangular wave, how to achieve the perfect triangular form? Even with fourier series it’s difficult to get such perfect form Good content though, really enjoyed it
all the calculations are done in a microcontroller digitally. The traingular wave is produced by the min max calculations as explained in the video. The output of the controller is PWM with duty calculated using the above method. Generally, the reference waves have max frequency of 1KHz. And sampling/switching frequency is 10 times or more than the reference wave. So, you do not have to worry about the sharp points.
![ILLSLICK X YOUNGOHM - We're The same [Official Video]](http://i.ytimg.com/vi/yUJNkobYR0E/mqdefault.jpg)
Hey guys, this is not the last video of the series. We are pausing it for now, to focus on some other important concepts. A very interesting series begins next week. Stay tuned!
FOC, for pmsm motor FLUX Weakening please
I will be making a video on Field Weakening in future.
I really appreciate your efforts and thank you for making our life easier. Eagerly waiting for you to continue this series.
Also, Could you please tell me how can I get in contact with you?
Thanks again!
Hi, I am an engineer who just engaged in the test of electric vehicle motors, and I have not learned any motor-related knowledge in university. The first time I saw your video series on electric motors, I felt excited! I have never seen such in-depth motor related videos before. Thank you so much for your wonderful detailed explanation! I just finished watching the 9 episodes of this series and found that the last video was uploaded more than 1 year ago, I wonder if the series will continue? If possible, I hope that you can follow up with contents like MTPA, MTPV, position sensor, speed control, position control, PID controller tuning, current sensing, micro-controller choosing, etc. Hope to see your updates in the early future.
Great Video, have you uploaded and done the simulation in simulink to replace the inveter and svpwm and next your own pmsm model? That will be completed all your excellent video series.
Most beautiful explanation ever for SVPWM. Generally it takes an hour or two to even scratch the surface of space vector modulation, but this video made it so simple to understand, while still not skipping any part of it
I just wish you had posted this a year before😅, I literally banged my head on wall multiple times in understanding this completely during my mtech. You made it look so easy. Remarkable.!
I have a similar story. I also had to put in a lot of efforts and research all over the internet to understand SVM. I am glad that the video makes it easy to understand.
Great channel with intuitive graphics and perfect blend of theoretical aspect and practical considerations! Keep it up ! I am really enjoying it
SVPWM session was super. thanks a lot. I am eagerly waiting for the next videos
Really Informative Video. Your Channel is doing a great job. More Power to you.
Thanks a lot man, You made understanding this so much easier and faster ! ❤
Excellent Content, explained very well. Great job!
Great explanation.
Wonderful video! and the hexagon was a cube??? thats surprising. Would love to see many more of such videos. It would be great to see some specific motor control strategies, mtpa etc.
Yes, I will be talking about field weakening and MTPA in the upcoming videos.
Such a complex topic, but organized delivered and summed up in a great way. You bought me man.
P.S: Keep the complexity level high enough, because basics could be found in any video!!!
Very great work, Please make a matlab simulation video of SVPWM
amazing video
Thanks, it was informative, keep uploading.
Another very important considerations for practical motor control for EV is Flux Weakening for wider speed range and MTPA method since lot of applications are coming up with IPMSMs
Yes. I will be including those topics in future videos.
Thank you for an amazing and easy explanation. Appreciate your efforts :).
The series was very informative. Thank you!
Glad it was helpful!
please share video on PMSM motor characterization
Can i please get the .ppt of these series. It'll be great help.
Excellent explanation!
Sir, pls do more videos on Motor Control
Thank you. Your videos are great
The angle alpha at 11:00 is just the arctangent, there is no square root to take
Hi Thanks for explaining so beautifully. I do have question within last and this video. Va,Vb,Vc that we calculate using motor controls, are they VA,VB,VC or V_AN, V_BN and V_CN for the inverter output?
Thanks a ton.....please make video series on sensorless foc as well.
Yes, its there in the plan.
Sir please show speed control using spwm simulation
It is a humble request that could you please do the matlab simulation related to this Topic SVPWM TECHNIQUE as you mention at the end. Sorry for the inconvenience
is there any course which you can provide to learn SVPWM, FOC, DTC Control using MATLAB Simulink
how to change speedd using spwm? please give detail simulation
Hi ,
I was able to implement all the necessary functions for motor control - FOC , SVPWM for greater bus voltage.
However while testing the vehicle escooty on load , I observed that my phase strips radiated so much heat , the solder melted.
Is there any formula to calculate the dimensions of the cu strips that can be used for safe operation at load.
I have limited dc current at 35A and phase at 100A rms
I've already enclosed all pcb in metal enclosure.
Find the resistance of the copper strip (you will get online calculators) - find the heat loss - then the thermal conductivity and calculate the rise in temperature. There is no standard procedure. You need to test it and then re-design if needed.
Hi, What is the maximum line voltage which can be attained in SVPWM and SPWM for a Delta connected load
Ann, I have not done the calculations for the delta connected load. But I am sure you can do it by yourself - the technique remains the same as mentioned in the video.
U r the best ❤
really helpful!
Very good sir 🙏🙏🙏🙏🙏
Cool video. In Microchip's guide for SVM, it mentiones that SVPWM can give up to 86.6% or 3*sqrt(2)/2 * DC link voltage. Any idea how this number can be found and how is this associated with our Va - Vn = 2/3 Vdc ?
Found it. This is line to line, so if you do Va - Vb you can get the 86.6%
please a video should be on rotor flux orientation and 3-phase indction motor mathematical model.
Can you please explain me how did you assume reference signal voltage -> VA = 0.5 + 0.5sin(wt) ?
@The Subcooled Mind
Thanks
how is the amplitude of third harmonic choosen?
Hi,
Can you please guide me how can we take care of gradient noise in electric vehicle.
When my vehicle is on ramp or it moves slightly back , when i give throttle, a lot of noise is observed , kindly guide how to take care of this condition
اريد كود اردوينو لتشغيل متور الدسي وبمقابل اجر مادي وشكراً ارجو الرد
Instant sub. Keep it up :D
•Hi I am using INA240 to measure phase currents, it has a gain of 20. I am using a 0.5 milli ohm shunt to measure phase currents. I have seen in application notes that we add 1.65 V offset.
•Can you please guide me on how much max. current i could measure using them. Also, I am doing calculation in pu unit in my code where 1 pu = 32768.
•How can I integrate current sensing data with my FOC calculations in pu ?
1.65V is added so that we can measure the AC currents (ADCs cannot measure negative currents so you offset them). For max current calculation - i*Rsense*Gain = 1.65. This will give you the magnitude of the current waveform.
For PU measurements - you can take the scaling factor to be the value you got from the above calculation. For FOC, you will have to also calculate the reference value in PU and that then use the PID controller. (Note - you will have to offset the measured values again in the controller).
I hope it answers your question.
Hi .
I know we use concept of field weakening in foc to go beyond rated speed.
Can you please guide me how can we achieve the same in sinusoidal commutation?
I have not tried it. Field Wekakening in FOC is nothing but creating a phase shift between phase current and back-emf. You can do the same in sinusoidal modulation as well. You need to command current which is phase shifted from the encoder position. You can do this using look-up table method.
Hi, thank you for your video.
How about if the sequence looks like : 000-001-011-111-011-001-000 ? (Switching losses are reduced)
Ya if your reference lies on the sector 4.
Hi,
I am working on a 10KW induction motor drive project. It's specs are 72V/10KW/145A rms rated current and 450-500A peak current. I guess I can't use INA240A1 here as it has a common-mode voltage limit of 80V. I can't go for INA149 as it needs dual supply. Hall current sensors and Current transducers are an expensive solutions. Kindly suggest some appropriate solutions. Thanks.
Hi Pujit,
It depends on a lot of things - whether you are okay with leg sensing or you want phase sensing only - 3 shunts or 2 shunts, placement(size), cost, layout, thermal, etc etc.
I will not be able to suggest something unless I know your requirements and design.
We can discuss this further through email - contact@thesubcooledmind.com
may i know why do we prefer svpwm over spwm + 3rd harmonic?
Better THD
Plz make vedio on EV car controller.
Really nice. Can you make some videos on dq & alpha beta more in detail with simulations. That would be very helpful.
You should check out the Part4 of the series again: th-cam.com/video/8uVRpYuGTx0/w-d-xo.html.
All the information required to simulate dq and alpha beta is given here. And you will learn things much better when you do the simulation yourself. Give it a try.
Can you please put the english subtitles? English is not my first langage. I find this video very interesting but there are parts that I am missing because I don't get everything
please try auto captions
لايوجد ترجمه بالفيديو!
لا توجد ترجمه للعربيه لو سمحت
Pardon me, but I still don’t understand the part about u,v,w waves + triangular 3rd harmonics order, ain’t it only sinusoidal wave 3rd harmonics in the nature?
Even if you use any devices to produce triangular wave, how to achieve the perfect triangular form? Even with fourier series it’s difficult to get such perfect form
Good content though, really enjoyed it
all the calculations are done in a microcontroller digitally. The traingular wave is produced by the min max calculations as explained in the video. The output of the controller is PWM with duty calculated using the above method.
Generally, the reference waves have max frequency of 1KHz. And sampling/switching frequency is 10 times or more than the reference wave. So, you do not have to worry about the sharp points.
@@thesubcooledmind7910 ah I see, I forgot we could use Nyquist to gain good enough resolution for sampling. Tyvm
You can help in exchange for money