Jantzen Lee
Jantzen Lee
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Optimal Regenerative Braking, Explained (episode 14)
This week we look at how motors can be used for regenerative braking and the unintuitive reason why friction brakes can make them more efficient. As always, like, comment, subscribe, have a great day. but only if you want to. P.S. sorry if the meme density was too high.
footnote: 100% duty cycle corresponds with the generation method described in the first half of the video.
Переглядів: 59 307

Відео

Feedback control of a DC servo motor (UM: episode 13)
Переглядів 14 тис.3 роки тому
This episode we tackle the basics of feedback control for a dc servo motor. like, comment, and subscribe. but only if you want to. Footnote: The way the BEMF is illustrated assumes that the motor is being controlled to accelerate (IE, the applied voltage is driving current to produce torque in the direction of the velocity). If the controller is decelerating the motor, the BEMF will face the op...
Motor Datasheets explained. (episode 12)
Переглядів 21 тис.3 роки тому
This episode we tackle the perceived enigma of data sheets. Hopefully its helpful. As always, like, comment, subscribe, talk about it at thanksgiving with your family, do what ever you want, Im not the boss of you. Update from Trinamic: They responded and told me that the rated voltage is set such that, if continuously applied to the motor (as in not using an H bridge), it corresponds to the ma...
How to do Space Vector Modulation (Understanding Motors episode 11)
Переглядів 47 тис.4 роки тому
This week we are covering how to perform SVM in the real world. Feel free to like, comment, subscribe, share with your aunts and uncles, but only if you want to. resources: www.ccs.asia.edu.tw/ezfiles/2/1002/img/442/0703-21.pdf ua-cam.com/video/5eQyoVMz1dY/v-deo.html
What is Space Vector Modulation? (Episode 10)
Переглядів 72 тис.4 роки тому
Ever wondered "what is space vector modulation"? Well, this week we look at optimizing our voltage modulation method via space vector modulation (AKA SVM), as well as brushing up on some basic control ideas. Like, subscribe, share, tell Carol what you really think about her baby (reference to the video), but only if you feel like it. Note on this video, I'm only presenting the alternate reverse...
Why is sinusoidal current best in a DC motor?? (Episode 9)
Переглядів 38 тис.4 роки тому
This week we develop a new and better plan for the current we will send through our BLDC motors! like, comment, and share, but only if you want to. I will be taking a week off next week to try and get a little bit of a head start on the next couple of episodes.
The Clarke and Park transformations (Episode 8)
Переглядів 127 тис.4 роки тому
This week we discuss the Clarke and Park transforms (AKA alpha-beta and DQ0 transforms) in our quest to develop a more optimal method of control (Field oriented Control) footnote: Again a reminder, we are talking about permanent magnet motors. For induction motors current in the D direction will be necessary for torque production. external resources: MIT notes: ocw.mit.edu/courses/electrical-en...
How does the way you PWM switch affect commutation? (Episode 7)
Переглядів 25 тис.4 роки тому
This week we look at 3 different switching schemes which can be used with block and sinusoidal commutation. We analyze the effects these different methods have on the efficiency of your system and on the current dynamics. If these arent good enough for you though, dont worry, next few episodes will get into field oriented control. Like, comment, and subscribe, but only if you want to.
How do brushless motors commutate? (episode 6)
Переглядів 43 тис.4 роки тому
This week we talk about how brushless motors commutate and develop a commutation table. Let me know if there is anything you want me to talk about specifically and i will try to work it into future stuff. Like, comment subscribe, but only if you wanna.
How do brushless motors make torque?? (Episode 5)
Переглядів 60 тис.4 роки тому
This week we discuss how motors sense position, how the hall effect works, and how brushless motors produce torque. Like, comment, and subscribe if ur into it. Foot Notes: Not all BLDC motors have hall sensors, in fact many that are not used for traction applications do not (drones come to mind). Controllers just generate a rotating magnetic field and let the rotor do its thing. Position can al...
How do motors fail?? (Episode 4)
Переглядів 18 тис.4 роки тому
This week we discuss how motors typically break, and how it lead to the development and adoption of the brushless motor. We do some thermodynamic analysis, talk about brushes, and as always, do a little bit of huzzah-ing. Like, comment, and subscribe if ur into it. Foot Notes: the number I cited of 150 degrees Celsius is NOT globally true for all motors. Check your motor data sheet before using...
How do you control a motor's direction and speed? (Episode 3)
Переглядів 22 тис.4 роки тому
This week we tackle the electric circuitry used to drive a motor, the H bridge. And we introduce the idea of pulse width modulation (rue-loaded to fix audio issues)
How do brushed motors turn?? (Episode 2)
Переглядів 28 тис.4 роки тому
Episode 2 of understanding permanent magnet, DC motors. In this episode we cover brushed commutation and how it allows us to turn continuously. Additionally, we show the origin of the torque constant and its multiple meanings.Like, comment, and subscribe, if thats your thing.
The Physics behind how motors work. Understanding motors (Episode 1)
Переглядів 43 тис.4 роки тому
episode 1 of the series Understanding Motors. In this series we are going to start with brushed motors, cover brushless motors, optimize commutation via field oriented control, talk through regeneration techniques and control. Let me know any additional topics that would be useful. Like, comment, and subscribe, if you are into that kind of thing.

КОМЕНТАРІ

  • @HenryeSanchez
    @HenryeSanchez День тому

    Ashleigh Points

  • @omersaleh-h3p
    @omersaleh-h3p 18 днів тому

    You are great

  • @jimmyjensen5440
    @jimmyjensen5440 19 днів тому

    Tak!

  • @tamashamas6193
    @tamashamas6193 20 днів тому

    Amazing videos! You deserve all the praise these comments sections are. Question about regen, isnt the shorting of the leads for boosting the same thing as the unforced phase in space vector modulation? Does that mean that during each unforced phase there is heaps of energy being pushed back and forth into the inductors which is undesirable as you had previously mentioned?

  • @grantbarthelmes1950
    @grantbarthelmes1950 26 днів тому

    Amazing videos jantzen truly! Although, I have one remaining question: how do we understand the connection between the PWM switching pattern you show here and the alternate reverse SVM waveforms that we are trying to create? How is it that this exact form of PWM switching creates those funky voltage waveforms we need (perhaps you could connect this with the SVM 6 vector hexagon as well) ? Thank you

  • @ImTheReal
    @ImTheReal Місяць тому

    Subscribed. Waiting for more videos 😊

  • @umakemerandy3669
    @umakemerandy3669 Місяць тому

    Wheres 15?? :)😊

  • @theonlypirdain
    @theonlypirdain Місяць тому

    Hey, Great video, I'm very impressed with you knowledge for the subject matter. But I think you missed injecting a third harmonic in the PWM sequence, the triangle wave and it's implementation is missing from your software scope. It's dependent on the angle of the magnetic field vector and based on that we will either add to the voltage vector or subtract to it on the positive and negative sides. If you address this in a future video it'll help put a complete closure to this series, which I believe is the best one out there. Kind Regards

    • @ekon01cz
      @ekon01cz 20 днів тому

      I think so, he was showing third harmonic, but didn't explain where he got one. Because you don't get that just from SVPWM.

  • @adnaneakk1068
    @adnaneakk1068 Місяць тому

    i have problem understanding why we still using Sectors while we have a SPWM technique, i mean we got rid of the ripple and we can get the exact current just by the angle ( sensor ), why did we use the sectors that are for 6 and 12 commutation blocks, because i totally lost it when you entered the T0 T1 T2

  • @filmweaver2013
    @filmweaver2013 2 місяці тому

    Your videos are amazing! usually videos with good animation and great writing often have less details, and are overviews, but yours have very dense information. So much in fact that these are a great resource for motor design!

  • @mockingbird187
    @mockingbird187 2 місяці тому

    Well, now I'm curious if this is the reason why Tesla doesn't use a blended pedal. Hmm... It's really difficult to find good information on that sort of thing. You'd think, if this were the case, they would put it out there to be known, saying, "Yes, other manufacturers use a blended brake pedal so it's logical to assume that leads to greater efficiency, however, here's the science and reality..."

  • @gearscodeandfire
    @gearscodeandfire 2 місяці тому

    I just watched five videos straight and I figured I should periodically stop, take a deep breath, and leave an affirmative comment. Dude this freakin' rules 🤘 As somebody who has recent memory of thinking that stepper motors were complicated, and as somebody who just started screwing around with Simple FOC, this was the video series I needed to make it make sense. Thank you. Fun fact: it took me longer to figure out how Tig welding actually worked on UA-cam than it did to learn how FOC control of brushless motors works. That's amazing how efficiently you deliver that understanding.

  • @gearscodeandfire
    @gearscodeandfire 2 місяці тому

    Here from the simpleFOC discord- great video

  • @Timsturbs
    @Timsturbs 2 місяці тому

    why do we apply triangle wave? because its simpler than sine? it should be 1/3 in amplitude? its basically a third harmonic?

  • @ramani1601
    @ramani1601 3 місяці тому

    🎉🎉

  • @darrenhu9772
    @darrenhu9772 3 місяці тому

    May I ask what does the 'M 1:2' mean, which is in Maxon Datasheet's Electro-Mechanical characteristics?

  • @toroelectronica6831
    @toroelectronica6831 3 місяці тому

    Hey bro. Ty by all. I don´t speak inglish and can´t traduction this video because the lenguaje is in rusian. If you coul change the lenguaje, please.

  • @vitaliyl7030
    @vitaliyl7030 3 місяці тому

    Thank you for excellent videos!

  • @맡인
    @맡인 4 місяці тому

    Capturing the currnet in a loop was real something 😂

  • @AleieldinAli
    @AleieldinAli 4 місяці тому

    This is called ART <3 Truly fascinating series

  • @MayurNath14
    @MayurNath14 4 місяці тому

    So how do you actually calculate the power coming out of the battery then?

  • @chandan-qx1br
    @chandan-qx1br 4 місяці тому

    bro where are you only one playlist the world deserves people like you please come back and do more videos its my humble request. oh god you're great man and this is the end of this playlist

  • @youssefmarouani2603
    @youssefmarouani2603 5 місяців тому

    good explanation 👍

  • @vevenaneathna
    @vevenaneathna 5 місяців тому

    uh is this more true for teslas with their non magnet motors? around town in my volt with master race rare earth magnets i regularly get 5-7 miles/kwh. feels like i dont have all these efficeincys and fet switching trickery, its just a magnet spinning...

  • @EE-te7ll
    @EE-te7ll 5 місяців тому

    Taught everyone your profession ? Lost your job ?

  • @CollinKeegan
    @CollinKeegan 5 місяців тому

    after watching a lot of later parts of this series, the sentence "PhD in Mechanical Engineering" was not one I was expecting

  • @frankstocker5475
    @frankstocker5475 6 місяців тому

    I got into 4 minutes & gave up.

  • @rahulkumarsharma6084
    @rahulkumarsharma6084 6 місяців тому

    Thanks for making these videos, they are quite informative 👍 One Question: Torque is produced by the force generated by the interaction of Magnet's Magnetic feild & current flowing through the Copper wires (I.B.L.Sin(theta), Amperes Law). Back EMF is produced due to rate of change in Flux from PM of Rotor. how does the energy associated with I.BEMF equals the energy produced ?

    • @jtlee1108
      @jtlee1108 6 місяців тому

      In an idealized motor (ignoring losses, and idealizing commutation) back EMF times current flow will equal the torque produced times the velocity

  • @मराठी.माणूस
    @मराठी.माणूस 6 місяців тому

    If I had watched this video before my interview, I could have probably cracked it. The current flow direction, magnetic field direction and torque direction you explained at the start could’ve saved me. :)

  • @nanibelloua4962
    @nanibelloua4962 6 місяців тому

    Guve us the relation between speed and communication 's frequeuncy

  • @MrJames-nx3un
    @MrJames-nx3un 6 місяців тому

    Why do we need to use V0 and V7 what happens if i remove them. Line must be V1 - V2 - V1 - V2 - V3 - V4 - ....... And i wanna say, that's a great explanation sir, thanks for your video

    • @felipedamascenosilva3011
      @felipedamascenosilva3011 5 місяців тому

      The idea behind V0 and V7 is that you can control the magnitude of your SV current/voltage instead of only controlling its angle. You achieve so by litteraly turning the IGBT bridge off from time to time, rather then always working on full capability. If you remove them, you lose the ability to smoothly turn on and turn off your motor in a ramp shaped form, for example.

    • @felipedamascenosilva3011
      @felipedamascenosilva3011 5 місяців тому

      Actually, after reinspecting the equations on 8:33, I saw that, even on full work (DC = 1), you still have T0 different from 0. That should be to avoid "escaping" the unit circle, since the true range of that SV basis is an hexagon, not a circle. I belive that, if you're already in stead state and want to overperform, maybe you can overmodulate by dropping V0/V7, but I can't say that for sure.

    • @MrJames-nx3un
      @MrJames-nx3un 5 місяців тому

      @@felipedamascenosilva3011 thank you for the helpful explanation, have a nice day

  • @sholaolabisi9718
    @sholaolabisi9718 7 місяців тому

    I like your illustrations, especially the ones that those that are dynamic. What software do you use?

  • @nikolay.cheliuk
    @nikolay.cheliuk 7 місяців тому

    Sacred words: "..., however it turns out that a lot of what's on the Internet is well less than accurate and it's not always easy to tell the difference between someone who actually knows what they're talking about and someone who just thinks they know what they're talking about."

  • @ultricengelbrecht3870
    @ultricengelbrecht3870 7 місяців тому

    Subscribed just because your explanations are simple and clear, with just enough background information

  • @nikolay.cheliuk
    @nikolay.cheliuk 7 місяців тому

    What does the number of pole pairs mean? I suppose it correspond to the number of windings divided by 3. But at the same time people speak about the number of the rotor poles. Some times we may have 12 windings and 10 poes in rotor. So, how many pairs of poles do we have there? 12/3 = 4 or 10/2 = 5?

  • @nikolay.cheliuk
    @nikolay.cheliuk 7 місяців тому

    This is a great play list. Is it possible to translate it to the other laguages?

  • @johnrbnsn
    @johnrbnsn 8 місяців тому

    Make some new videos, your stuff is great!

  • @adnaneakk1068
    @adnaneakk1068 8 місяців тому

    That moment when you are speachless to say just thanks ... wow man no words can describe how much grateful iam

  • @huanhuang3432
    @huanhuang3432 8 місяців тому

    i don't make sense of force vector leading our current vector by 90°, at this point given the conversion sin(90+θ)=cos(θ), i can guess these come to ildbcos(θ) , please give some explaination here.

  • @bronkolie
    @bronkolie 8 місяців тому

    This series is amazing. I can't believe there's such a high-quality well-explained series that goes into such detail on this topic

  • @pokpikchan
    @pokpikchan 8 місяців тому

    I was trying to charge a battery by running on a treadmill. This is exactly what I was looking for. Thanx

  • @fadiha2746
    @fadiha2746 8 місяців тому

    First or all, a big thanks For this series which goes deeply into the physics concepts of electromagnetism underlying the workings behind motors and with clear and deep explanations !

  • @franciscocarmo4545
    @franciscocarmo4545 9 місяців тому

    Can't believe this gold has been out of my subscriptions list until now. Awesome content, you manage to detail the matter without extending too long the video!

  • @georgederleres8489
    @georgederleres8489 9 місяців тому

    Does the experiment at 7:30 apply also to a 3-phase motor, or is it not so simple and intuitive there?

  • @ahmedhesham6944
    @ahmedhesham6944 9 місяців тому

    My mind is truly blown by the level of clarity and simplicity in the content you're offering. Your ability to break down complex topics into such easily understandable explanations is a rare gift. Thank you for making learning so accessible and enjoyable!

  • @ahmedhesham6944
    @ahmedhesham6944 9 місяців тому

    I truly appreciate your extraordinary work in teaching us these principles seamlessly. Your dedication to delivering complex concepts in such a clear and approachable manner is truly invaluable. Thank you for making learning such a challenging topic so enjoyable and understandable

  • @ahmedhesham6944
    @ahmedhesham6944 9 місяців тому

    I wanted to take a moment to express my deepest gratitude for the invaluable guidance and enlightening content you provide on your UA-cam channel. Your exceptional ability to simplify complex topics, particularly electrical motors and control, has made a profound impact on my understanding. Your clarity and simplicity in illustrating such intricate subject matter have not only enhanced my knowledge but also sparked a newfound passion for the field. Your dedication to sharing knowledge and expertise in such an approachable manner is truly commendable and inspiring. Your videos have been instrumental in helping me navigate through what initially seemed like a daunting topic, and for that, I am sincerely grateful. Thank you for being a beacon of knowledge and empowerment in the realm of electrical engineering. Your work has undoubtedly made a positive difference in my learning journey and has left an indelible mark on my pursuit of understanding electrical motors and control.

  • @sungurtigin7258
    @sungurtigin7258 10 місяців тому

    wow, what a video

  • @grantbarthelmes1950
    @grantbarthelmes1950 11 місяців тому

    The diagrams in this are great visualizations of the concepts. Very creative, thank you

  • @piyushmessi7758
    @piyushmessi7758 11 місяців тому

    Love from India <3