These exact equations do not hold true for all the motors. But the idea remains the same. You write the KVL equation for the three-phases in ABC form and then apply Clarke and Park Transform to get the equation in DQ quantities.
Hi, You did not use Ld and Lq in the equation for DQ, You simply use Ls. I think it is wrong. How can we convert Ls into Ld and Lq? Please let me know about it.
It depends on where the hall sensor is placed. There are quite a few magnetic position sensors available that attach a magnet to the shaft of the sensor and get precise position information. For example, check out this IC from Infineon - www.infineon.com/cms/en/product/sensor/magnetic-sensors/magnetic-position-sensors/angle-sensors/tle5501-e0001/
Good job. Clear explanation. Perfect visuals. I'll recommend this playlist to my friends. You're awesome. Please keep going and continue making more informative videos.
I am trying to model outer rotor PMSM in SImulink. Can we use the same equations and simulink PMSM blocks (from Simscape Electrical ) to implement this, or do we need to make it some changes to it?
Hi, really a great explanation! Can you please tell me from which literature you took out the equations? I would need the literature to cite it in my thesis...
Hi, You did not use Ld and Lq in the equation for DQ, You simply use Ls. I think it is wrong. How can we convert Ls into Ld and Lq? Please let me know about it.
In practise if we use a PMSM motor can we always assume that Ld=Lq? so is mtpa for pmsm just a straight line on the q axis? I understand that it is important for IPMSM but I'm not sure if i should care about this for PMSM.
If you have PMSM motor in hand, how to find it is alligned to phase A or 90 degrees apart. Which simulation model need to be considered, before going for hardware test.
When you give +ve DC supply to phase A and connect phase B and phase C to GND, the rotor aligns with phase A. You can use this information to tune your encoder.
Hello, I got two questions. Isn't it better to describe model of motor (both electric and mechanical part) by one big plant with state space? Or it's rather better to split in 2 models? And one more, I am not sure, how we can estimate rotor's position by only measuring back-EMF. Did i understand it properly (when we know, back-EMF is perpendicular to rotor flux and from that we can determine theta?) Please correct me if I am wrong. Thanks for answer and by the way, this series is great and I really enjoy watching it. Keep doing it bro.
1. Whatever approach you take, the equations for the model remains the same and so the output. Model it the way you are comfortable with. 2. Yes, your understanding is correct. Since, back-emf is perpendicular to the rotor flux - you can know the rotor position. To understand it in-depth, please look at some documents on sensorless FOC. Thanks. I am glad that you have enjoyed watching these videos. Happy Learning!
If you have any questions, leave them over here and Thanks for the support you'll have shown.
This applies for PMSM motor or all motors?
These exact equations do not hold true for all the motors. But the idea remains the same. You write the KVL equation for the three-phases in ABC form and then apply Clarke and Park Transform to get the equation in DQ quantities.
@@thesubcooledmind7910 what about single phase PM synchronous motor, can you guide me please
Hi, You did not use Ld and Lq in the equation for DQ, You simply use Ls. I think it is wrong. How can we convert Ls into Ld and Lq? Please let me know about it.
can you please make a video on sensorless algorithm
What an amazing series of videos for Motor control. Kudos to you brother!!
Thank you for creating this great series. Happy to have found it, looking forward to the next episodes!
Excellent work. People like you make youtube have quality content :)
Thanks 😀
crystal clear explanation sir, I request you to upload more videos.
I'm glad I started working in electric vehicle domain in 2020, otherwise, I had to understand so many things which you explain so simply.
That's great, which company you work for?
Hello sir, can you please guide me how can we do precise position calculation for pmsm motor with hall sensor. ?
It depends on where the hall sensor is placed. There are quite a few magnetic position sensors available that attach a magnet to the shaft of the sensor and get precise position information. For example, check out this IC from Infineon - www.infineon.com/cms/en/product/sensor/magnetic-sensors/magnetic-position-sensors/angle-sensors/tle5501-e0001/
Good job. Clear explanation. Perfect visuals. I'll recommend this playlist to my friends. You're awesome. Please keep going and continue making more informative videos.
Thank you for the videos, the content is really good, looking forward for more content.
How mutual inductance is L/2 ?
Straight to the point very helpful. Thank-you!
Sir, in the video u said Ls (Synchronous Inductance). What is the formula to calculate it?
Thank you for the clear video. Could you please share the calculations for phase currents to d,q frame at 4:22 to 4:33 please?
The video is well explained and so helpful. Could you please suggest a promising resource to learn all these concepts regarding PMSMs?
Sir you are great..these videos help me a lot..Thank you very much sir❤
Have you made video on MTPA?
an you please tell me from which literature you took out the equations?
Great video sir! Keep up your good work!!
Good explanation..thanks
At 1.17s why induced emf is not -ve of flux derivate?
great video, accent is the challenge
How will you select your DC link voltage of you are going for DTC? Any idea. (For a motor rated at 48v).
Can you provide more details on how to calculate motor angle.
Thank You Sir
I am doing a PMSM FOC experiment, but I am not sure how can i calculate my angle theta and how to give the phase current in an aligned position?
I am trying to model outer rotor PMSM in SImulink. Can we use the same equations and simulink PMSM blocks (from Simscape Electrical ) to implement this, or do we need to make it some changes to it?
Hi, really a great explanation! Can you please tell me from which literature you took out the equations? I would need the literature to cite it in my thesis...
Very good
Then what would be the id ref in a salient machine?
The id_ref is usually set by MTPA algorithm. I will be covering that in future videos.
Hi, You did not use Ld and Lq in the equation for DQ, You simply use Ls. I think it is wrong. How can we convert Ls into Ld and Lq? Please let me know about it.
In practise if we use a PMSM motor can we always assume that Ld=Lq? so is mtpa for pmsm just a straight line on the q axis?
I understand that it is important for IPMSM but I'm not sure if i should care about this for PMSM.
Yes. Everything you said is correct.
Nice video
Could you please give source for Vd and Vq equations
This thesis will help you - krex.k-state.edu/dspace/bitstream/2097/1507/1/JamesMevey2009.pdf
If you have PMSM motor in hand, how to find it is alligned to phase A or 90 degrees apart. Which simulation model need to be considered, before going for hardware test.
When you give +ve DC supply to phase A and connect phase B and phase C to GND, the rotor aligns with phase A. You can use this information to tune your encoder.
@@thesubcooledmind7910 that means we must need absolute encoder right? or is it possible with inc encoder. if so, please provide
Incremental Encoder should work. I do not remember the details but you can check out some documents from TI.
Hello, I got two questions.
Isn't it better to describe model of motor (both electric and mechanical part) by one big plant with state space? Or it's rather better to split in 2 models?
And one more, I am not sure, how we can estimate rotor's position by only measuring back-EMF. Did i understand it properly (when we know, back-EMF is perpendicular to rotor flux and from that we can determine theta?) Please correct me if I am wrong.
Thanks for answer and by the way, this series is great and I really enjoy watching it. Keep doing it bro.
1. Whatever approach you take, the equations for the model remains the same and so the output. Model it the way you are comfortable with.
2. Yes, your understanding is correct. Since, back-emf is perpendicular to the rotor flux - you can know the rotor position. To understand it in-depth, please look at some documents on sensorless FOC.
Thanks. I am glad that you have enjoyed watching these videos. Happy Learning!
Is this vedio available in hindi