What is FOC? (Field Oriented Control) And why you should use it! BLDC Motor
video description
I read on the internet that there are 3 principal methods (FOC, Square wave Control, and 6-step commutation control) it's strange to ask this when I just answered it, but I get confused reading what google finds for you and what academic books say, in a book I read it says that there are also 3, but they're called (PWM, Hysteresis control, and Space Vector Modulation. I would like if you could remove the uncertainty for me please, if you would like? Of course without delving too deep in the details of every method. Thanks a lot.
Date: 2020-09-05
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Comments and reviews: 9
Energy
Omg I was trying to find a video I watched about latest Bldc driver controllers but cant seem to find it and thought I must have dreamt it! But lucky I find your video that proves better driver tech is real. I wish I could find other video though as it explained certain things that I want to research further and I think you may like it. I just bought aeg fusion drill and it has latest Bldc motor controller which nearly doubles it torque from 70 nm to 140nm. I also uses Panasonic 2070 cells instead of 18650. Very powerful drill.
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Omg I was trying to find a video I watched about latest Bldc driver controllers but cant seem to find it and thought I must have dreamt it! But lucky I find your video that proves better driver tech is real. I wish I could find other video though as it explained certain things that I want to research further and I think you may like it. I just bought aeg fusion drill and it has latest Bldc motor controller which nearly doubles it torque from 70 nm to 140nm. I also uses Panasonic 2070 cells instead of 18650. Very powerful drill.
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Chris
5: 62 PWM voltages - wrong word - you meant current, but that's still wrong too - PWM duty cycle is what you meant. 1: 27 - beautiful scope trace. 3: 29 - garbage; if you're going to compare old with something you got sponsored to talk about. you should do a fair comparison and put equal effort into showing properly gathered traces of reality. We don't mind you selling stuff. We do mind when you're dishonest about it.
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5: 62 PWM voltages - wrong word - you meant current, but that's still wrong too - PWM duty cycle is what you meant. 1: 27 - beautiful scope trace. 3: 29 - garbage; if you're going to compare old with something you got sponsored to talk about. you should do a fair comparison and put equal effort into showing properly gathered traces of reality. We don't mind you selling stuff. We do mind when you're dishonest about it.
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RA1-EULE
GreatScott! like your video a lot. think you have load of experience. I replaced the the molten down 1kw brushed my1020 Motor with a 80100 outrunner (sensorless: C) in my forca evoking scooter. I am almost sure that it is not worth to try running it with my 14S120Amp RC motorcontroller. so i wait for a VESC4. 2 i decided. U think this will propperly accelerate?
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GreatScott! like your video a lot. think you have load of experience. I replaced the the molten down 1kw brushed my1020 Motor with a 80100 outrunner (sensorless: C) in my forca evoking scooter. I am almost sure that it is not worth to try running it with my 14S120Amp RC motorcontroller. so i wait for a VESC4. 2 i decided. U think this will propperly accelerate?
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Igor
So, impulse generated in coil by oncoming magnet, while coils is still energized is capable as sonusoidal wave to ga back thru the wires, small resistor, attach it on input pin (ARDUINOOOOOOO) bit of clever programming (or just and voila you got your self a very nice ( programmable even) BLDC controller.
Field Oriented Control. clever name, that is for sure: D
reply
So, impulse generated in coil by oncoming magnet, while coils is still energized is capable as sonusoidal wave to ga back thru the wires, small resistor, attach it on input pin (ARDUINOOOOOOO) bit of clever programming (or just and voila you got your self a very nice ( programmable even) BLDC controller.
Field Oriented Control. clever name, that is for sure: D
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sinhusoidal
i had my project on collage about foc, the interesting part about Foc is, you need to model your controller with stator rotor impefances, it impacts speed and position control massively. I had a detailed project and matlab models about it on collage, i can share anyone who is interested
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i had my project on collage about foc, the interesting part about Foc is, you need to model your controller with stator rotor impefances, it impacts speed and position control massively. I had a detailed project and matlab models about it on collage, i can share anyone who is interested
reply
Anubhab
smoother field movement in space with time is the major plus point of FOC. FOC can simplify the control strategy of a 3 phase AC induction motor or a PMSM to look like that for a DC shunt motor where torque is a function of current drawn and the speed a function of voltage applied to it.
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smoother field movement in space with time is the major plus point of FOC. FOC can simplify the control strategy of a 3 phase AC induction motor or a PMSM to look like that for a DC shunt motor where torque is a function of current drawn and the speed a function of voltage applied to it.
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epineh
That is a very nice chip, though I think going a diy PCB would be interesting, the QFN76 package is 11. 5mm by 6. 5mm and 76 pins! Not for the faint hearted. I believe the TMC4671 breakout board is 4 layer, adding more cost and complexiy to any hopes of DIY, maybe I'm too old haha.
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That is a very nice chip, though I think going a diy PCB would be interesting, the QFN76 package is 11. 5mm by 6. 5mm and 76 pins! Not for the faint hearted. I believe the TMC4671 breakout board is 4 layer, adding more cost and complexiy to any hopes of DIY, maybe I'm too old haha.
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TheBdd4
Atul Vinayak
4 months ago said:
You wasted an opportunity to title the video What the FOC! I say you took the opportunity to be clean, GOOD! I like the fact that your speech is clean, so many of us can watch and learn without getting morally debased.
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Atul Vinayak
4 months ago said:
You wasted an opportunity to title the video What the FOC! I say you took the opportunity to be clean, GOOD! I like the fact that your speech is clean, so many of us can watch and learn without getting morally debased.
reply
Chittling
Can I expect the same efficiency in both directions of a Sensorless motor without having to reset or reprogram a basic rc esc? Simply put, can I expect the same efficiency by simply switching 2 of the 3 motor wires? Thanks
reply
Can I expect the same efficiency in both directions of a Sensorless motor without having to reset or reprogram a basic rc esc? Simply put, can I expect the same efficiency by simply switching 2 of the 3 motor wires? Thanks
reply
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