Understanding Regenerative Braking!

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  • Опубликовано: 1 янв 2025

Комментарии • 339

  • @SabinCivil
    @SabinCivil  2 месяца назад

    Hi, I hope you enjoyed the regenerative braking video. Your support matters a lot for me and my team - www.patreon.com/Sabins Thanks Sabin Mathew

  • @AtomikHotRod
    @AtomikHotRod Год назад +1103

    Love the attention to detail with the BMW not indicating for the corner. Keep up the good work.

    • @RobertCraft-re5sf
      @RobertCraft-re5sf Год назад +33

      Ha, yep that is accurate.

    • @blocksource4192
      @blocksource4192 Год назад +5

      But bmws have regenarative breaking..... there is no accuracy... All bmws have 48volt motors to enhance performance..

    • @AkmalPROMVP
      @AkmalPROMVP Год назад +7

      @@blocksource4192Do you mean hibrid or efficiency dynamics ?

    • @spizzz2
      @spizzz2 Год назад +7

      🤣

    • @blocksource4192
      @blocksource4192 Год назад +3

      @@AkmalPROMVP they all have mild hybrids…

  • @o_s-24
    @o_s-24 Год назад +214

    Regenerative breaking is also used by trains and trolleybuses and the energy is transferred back to the network

    • @frommarkham424
      @frommarkham424 Год назад +4

      Some elevators and bikes have regen braking too

    • @gottliebdee263
      @gottliebdee263 7 месяцев назад

      @@frommarkham424 Yep, I was in the fitness industry and they used it on the Precor 846 bike and 546 cross-trainer about 20 years ago.

    • @chinguunerdenebadrakh7022
      @chinguunerdenebadrakh7022 5 месяцев назад +2

      Trains in the US have the technical capability too as they're diesel-electric powered (diesel engine turns to power an electric motor), but they are unable to do this as they are not connected to the grid or have batteries enough to store that, so they just burn off this extra electricity through gigantic resistive heaters on the roof.
      It's crazy that they just throw away this easily exploitable electricity.

  • @_dionisio
    @_dionisio Год назад +40

    The rear motor in Tesla, Volkswagen and Hyundai electric cars is not the induction motor you have represented in the video. They all use a Permanent Magnet Synchronous Motor (PMSM) but the video is still valid because the principle of regeneration is the same. The only difference is that rotor and the stator magnetic field rotate at the same speed: the machine is synchronous. Thanks for the good video.

    • @CFG39
      @CFG39 10 месяцев назад +7

      LR AWD Model S and X used to use a PMSM on front axle and induction on rear, whereas the 3/Y use induction front and PMSM rear. Since the refresh launched, they’ve used 2-3 PMSM motors. This is a little bit of a dent in efficiency because the PMSM generates a force each time it spins around even when no power is being fed to it. This is why Hyundai/Kia/Genesis, Mercedes, Porsche, Audi, etc. all fit a mechanical decoupler to one of their PMSM motors so it doesn’t spin and create drag when not needed for power. It’s honestly a little surprising Tesla didn’t keep an induction motor on the LR AWD S/X or invest in a clutch to decouple one or two of the motors from the drivetrain like the Germans and Koreans have done, but they didn’t. Hyundai claimed the addition of the clutch system improved cruising efficiency 9% on average on their AWD models. In my experience it’s closer to 20% at highway speed.

    • @icy1007
      @icy1007 7 месяцев назад +1

      @@CFG39 The front induction motor is barely used in normal daily driving and only when it is needed.

    • @CFG39
      @CFG39 7 месяцев назад +2

      @@icy1007 on Model 3/Y, yes. On Model S and X which no longer use an induction motor (they’re using 2 or 3 permanent magnet motors) obviously that isn’t an option.
      On the S and X it would be ideal to switch back to induction or to add a clutch to the front motor to decouple the motor when not needed (pretty much anytime you’re not hammering it) like Hyundai/Kia, MB, etc. use on their EVs with multiple PM motors.

    • @casey360360
      @casey360360 7 месяцев назад +1

      Nissan's used the PMSM since 2011. Weird that everyone seems to forget about Nissan.

    • @lanzer22
      @lanzer22 6 месяцев назад +1

      @@casey360360 I still have my 2011 Nissan Leaf, I'm constantly trying to forget about it. :)

  • @HsquaredH2
    @HsquaredH2 3 месяца назад +4

    I’m just happy to see that your channel knows the difference between “Braking” and “Breaking” since many here clearly don’t…😅

  • @christashik9524
    @christashik9524 Год назад +22

    Tesla now allows regen braking all the way to a full stop. It use to be to about 5mph before the friction brake was needed…. Now I haven’t touched my brake pedal in a long long time

    • @jpizel1070
      @jpizel1070 Год назад +8

      Its the best thing since sliced bread. It is a much more relaxing drive when you barely have to lift your foot from the accelerator I can't imagine driving a car without it.

    • @adrianthoroughgood1191
      @adrianthoroughgood1191 9 месяцев назад +2

      Is the regen really doing all the braking, or is the car just automatically applying the friction brakes for the last bit?

    • @pippipylup8106
      @pippipylup8106 9 месяцев назад +10

      @@adrianthoroughgood1191 The car automatically applies the friction brakes. In fact, teslas have power meters that show how much energy is entering or leaving the battery, and if you take your foot off the accelerator entirely and let the car stop itself, it doesn't show any energy entering the battery anymore after it goes below 2 or 3 miles per hour.

    • @sharonbraselton3135
      @sharonbraselton3135 6 месяцев назад

      Relaxing top boring big iver 1980 exidics xars

    • @skinnytinny9023
      @skinnytinny9023 День назад

      I hope your friction brakes work when somebody else really needs them to.

  • @stevenhill3136
    @stevenhill3136 Год назад +20

    Applying friction brakes for complete stop no longer required when optional setting is enabled

  • @AalapShah12297
    @AalapShah12297 Год назад +29

    2:55 I am not sure about Tesla EVs in particular but in general, the power produced from regenerative braking by the inverter is in DC format only. Inverters normally change DC to AC so when operated on reverse, they change the AC power from the motor into DC. So there is no need for an additional rectifier.
    But this DC power needs to be brought to a the right voltage for charging the battery, which is where the DC to DC converter comes in. Another interesting thing is that usually this part requires very little additional hardware, as the on-board charger used in most EVs also consists of a DC to DC converter - and that same one is used for charging the battery during regenerative braking, as the on board charger is not in use during driving.

    • @casey360360
      @casey360360 7 месяцев назад

      Not even close. The FET/diode circuit in the inverter works as a rectifier during regen, the inverter has a PWM circuit to act as a buck-boost converter. Regen is contained 100% in the inverter, regen force is also controlled by the inverter. The DC-DC converter only steps down voltage to the accessory battery. Level 1/2 charger is done by AC rectified and stepped up to battery voltage by again, the inverter. level 3 charging is native DC from the charger.

    • @AalapShah12297
      @AalapShah12297 7 месяцев назад

      ​@@casey360360As for the first part of your comment - that is exactly what I said. The inverter rectifies the regen power and there is no need for an additional power converter for that.
      Regarding the need for a DCDC converter - firstly I am talking about an HV to HV DCDC converter, not the HV to LV converter for the auxiliary battery. Secondly, the video already mentions that the architecture they are describing uses a DCDC converter to bring the voltage to the HV battery voltage. This is a very common characteristic of many EV architectures in the industry today, as they want to support 400V DC charging which is more widely available than 800V DC charging, but they still want to have an 800V inverter, heater, a/c, etc to improve overall efficiency. Of course, there are EV architectures where the inverter regen voltage is directly at the battery's voltage level so there is no need for an HV to HV DCDC converter, but that is not the kind of architecture they are describing in the video.
      Regarding level 1/2 charging through the inverter - yes that is one of the features of a few modern EV architectures but most on-road EVs today have a separate On-board-charger and inverter. Watch any teardown video and you will see.

  • @t-finder
    @t-finder Год назад +11

    After a long time lesics is back ..... hope you will be the most viewed channel❤

  • @theheavyweight2008
    @theheavyweight2008 8 месяцев назад

    Excellent video! Had to watch a couple of times 1:53 to 3:10 was the answer I was looking for.

  • @LisaVeveza
    @LisaVeveza 11 месяцев назад

    This video is very informative, thank you so much Tesla. Keep up the good work ❤

  • @vspatmx7458
    @vspatmx7458 Год назад

    Love the data
    Super love the voice
    Its interesting and
    Easy to understand.

  • @AKASHL-BLUcomsci
    @AKASHL-BLUcomsci Год назад +2

    lesics is back .❤❤❤❤💙💙💙

  • @Cybernatural
    @Cybernatural Год назад +42

    It is probably quite similar, but I would love to see an update with the permanent magnet motors, and how they use one pedal driving right down to Fu stop.

    • @yrr0r244
      @yrr0r244 Год назад +11

      It’s much more simpler. Permanent magnet motors are synchronous, they do not need any input to generate power, their frequency is synced to their rotation rate. To regen, just simply pause the inverter and hook up a rectifier is all you need.

    • @sethflorentz4809
      @sethflorentz4809 Год назад

      They can either blend in friction brakes or use "plug braking", basically using the motor backwards (actually consumes power).

    • @j.phoenix
      @j.phoenix Год назад +1

      Even permanent magnet motors need to blend normal brakes below 3-5mph. It’s just automatic with EVs with One Pedal Driving

    • @sethflorentz4809
      @sethflorentz4809 Год назад +2

      @@j.phoenix technically they can using what's known as "plug braking" but it actually consumes power instead of generating it.

    • @casey360360
      @casey360360 7 месяцев назад

      @@sethflorentz4809 Not a single EV uses plug braking. That would be moronic.

  • @crampamn1262
    @crampamn1262 Год назад +2

    Great video as always! Keep up the good work👏💯

  • @jacekmierzejewski1919
    @jacekmierzejewski1919 Год назад +14

    Lorentz force vector should point in the opposite direction. This mistake probably occurred because the direction of the induced currents in the rotor is also wrong.

  • @Eaningizimu
    @Eaningizimu 11 месяцев назад

    Interesting way of using the car break system 👍

  • @rahulK20227
    @rahulK20227 Год назад +16

    Lesiscs is struggling. And we must have to support them because of chapri youtuber can get million view, why we can't support education.
    We're Indian where education is born first. Let's appreciate this man's (Mr.Mathew) effort

  • @durlavroy8899
    @durlavroy8899 5 месяцев назад

    Best explain lesics👍

  • @ashishpawar7191
    @ashishpawar7191 Год назад

    Fantastic explanation. thank you for sharing sir

  • @LesegoMatlou-l1j
    @LesegoMatlou-l1j 11 месяцев назад

    Very helpful I now understand 🔥👊

  • @kenbrusworld6247
    @kenbrusworld6247 10 месяцев назад

    Really well explained

  • @MugishaJean1
    @MugishaJean1 Год назад

    It's been a while, thanks.

  • @mrinalkarmakar216
    @mrinalkarmakar216 8 месяцев назад

    I would greatly benefit from a detailed video on Air Handling Units and sewage treatment plants, covering topics such as their functions, components, and their significance in various industries. Given your expertise, I am confident that your insights and explanations would be incredibly informative and valuable.

  • @Flash1857
    @Flash1857 Год назад +5

    Always wondered how the brake lights would work with that, and the effect on rear end collisions

    • @andresd6193
      @andresd6193 Год назад +3

      I think they are controlled by the computer. I know in my car as soon as I barely reduce pressure on the accelerator the brake lights come on, I don’t have to press the brake pedal.

    • @baritonebroker
      @baritonebroker Год назад +1

      #1 question asked on Tesla test drives, they say. The brake lights are turned on when braking, automatically. The cartoon version of the car on my screen shows the brake light illuminated.

    • @straightpipediesel
      @straightpipediesel Год назад

      It's not just EVs, modern gas cars have special brake light logic as well. For example, when you are in hill hold/auto vehicle hold, or in collision avoidance emergency braking, the brake lights will turn on even though the pedal isn't applied. This caused an issue with the new Ford Ranger because they forgot about this when designing their trailer brake controller, so there's a stupid harness running from the front through the roof to the CHMSL to get a braking signal.

  • @abdelrahmansarhan3768
    @abdelrahmansarhan3768 Год назад

    It is really good video
    Thank you 🙏

  • @BluueFSD
    @BluueFSD Год назад +3

    It would be interesting to see how Tesla has been achieving a very precise control of the vehicle movement at low speeds now, it seems like it actually uses energy when coming to a stop at low speed downhill and I would also presume on a flat surface too, it's just negligent compared to the energy needed to stop at downhill scenarios

  • @commieTerminator
    @commieTerminator Год назад +2

    Tell me why we can't force motor to rotate in reverse direction in order to completely stop the car without friction braking

    • @DrDrift-rl6cc
      @DrDrift-rl6cc Год назад +2

      why would you waste more power?

    • @commieTerminator
      @commieTerminator Год назад

      @@DrDrift-rl6cc Won't it recharge the battery instead since we are consuming rotational kinetic energy of the wheel? Energy has to flow somewhere, right? (Btw Work done by torque is negative when angular displacement is in opposite direction, so motor 'should' act like a generator)

  • @fin3125
    @fin3125 Год назад +2

    I drive all the time never hitting the brakes. in combination of my timing and Tesla got real good at giving the right amounts of regen. I knows if there is a stop sige or red light coming up

  • @maxstr
    @maxstr 11 месяцев назад +1

    Is this the same system that Toyota uses in the Prius and hybrid models?

  • @gabedarrett1301
    @gabedarrett1301 Год назад +1

    4:00 I heard somewhere that it's between 20-60%, not 10%.
    Is there a way to actively control regenerative braking torque? The problem with modern regenerative braking is that you have to try and estimate when to remove your foot from the accelerator pedal in order to minimize wasted energy. If you estimate the timing incorrectly, you'll need to use friction brakes at the end, which wastes energy.

    • @dno8025
      @dno8025 Год назад +1

      Probably way less than 10%. Stopping from 60 MPH typically takes around 5 seconds. Let's be generous and say it takes 10 seconds. How much charge can be put into an electric car battery in 10 seconds? Not much. Even if the car is stopped 20 times from 60 MPH, that's still less than 200 seconds of charging time which won't increase range much at all.

    • @chrism3784
      @chrism3784 Год назад

      @@dno8025 yep, there will always be waste heat in the end, cannot beat entropy

    • @gabedarrett1301
      @gabedarrett1301 Год назад

      @@dno8025 That assumes all braking is as aggressive as you describe. In reality, you can often coast to maximize the regenerative braking energy captured

    • @dno8025
      @dno8025 Год назад

      @@gabedarrett1301 - Using only regenerative braking it takes less than 10 seconds to get from 60 to 0 on many electric cars.

    • @simeonellinger2064
      @simeonellinger2064 10 месяцев назад

      You can control Regen stopping power on the fly in some EVs.
      It's in some menus in Teslas but right by the steering wheel with levers/paddles in some cars like the Ioniq 5.
      I prefer the paddles, much more convenient when you need to change braking NOW

  • @Unknown...........
    @Unknown........... Год назад

    Ra 1 lúc tới 3 video liền. 👍👍👍

  • @WrathChild-NZ
    @WrathChild-NZ Год назад +19

    Regenerative braking can fully stop the car these days without using the friction brakes

    • @Steror
      @Steror Год назад +1

      I'll venture a guess there's break blending like mentioned in the video which activates the break when you release the throttle.

    • @gabem8119
      @gabem8119 Год назад +1

      @@SterorNo, you can actually stop the car completely with regen. It works best at lower speeds like around 40 mph and less, the lower the speed the stronger the regen is, but it does need practice to get the timing right so you can stop the car where you want it. An update added physical braking when regen isn’t at full capacity like when it’s cold or having a high battery SOC.

    • @Steror
      @Steror Год назад +3

      @@gabem8119 how do you know you're only using regen? My 2014 Tesla MS will regen break fine at high speed but at about 3-5 km/h the regen is so weak it becomes infeasible to use. Newer cars can do break blending so they use friction brakes when regen is not enough.
      If you are sure that your car is not doing break blending and can stop from 10 km/h to 0 in under 3 seconds, I really want to know what car it is and why mine can't do that.

    • @scooterD3
      @scooterD3 9 месяцев назад +1

      All the new Teslas 2020 and newer stop on their own very quickly. I owned a Chevy bolt that stopped on its own, no braking. My 2021 model y stops on its own, no breaking. There is a toggle in the car specifically for to be able to using breaking when regenerative breaking is not available, but it’s very clear the purpose of this is to function as normal when it is fully charged. For folks who have never experienced regenerative breaking, if your car is charged to 100%, the car will not activate regenerative braking. So, it will coast as it normally would, as if it is in neutral or how a gas powered car would coast.
      Most electric cars nowadays will stop completely using only regenerative breaking. This video is extremely outdated.

    • @moarsaur
      @moarsaur 8 месяцев назад

      It could in some situations, but would recoup less power by doing so. Your regenerative braking system cannot optimize energy capture if it needs to prioritize stopping the car. The two goals aren't perfectly aligned. Strategic use of the friction brakes actually allows regen braking to be more efficient.

  • @chrism3784
    @chrism3784 Год назад +4

    Gotta love in some car models it does not put the brake lights on when regenerative braking is applied. Is a loophole in the law. If a car in front of you is at max regenerative braking it will be slowing down pretty significantly and there will be no brake lights to tell you. Brakes lights only have to be on when friction braking is applied. Till the loophole in the law is fixed you rear end one, ,brake light on or not, your fault.

    • @mehmettemel8725
      @mehmettemel8725 Год назад +1

      This was the comment I was looking for.Bloody dangerous for the vehicles behind it.

    • @djtaylorutube
      @djtaylorutube Год назад +1

      ​@@mehmettemel8725Tesla puts brake lights on.

    • @gregorybower9498
      @gregorybower9498 Год назад +3

      nonsense. in the USA, NHTSA requires (of all manufacturers) the activation of brake lights upon deceleration. additionally, there are laws against vehicles' brake light system not being functional.

    • @bass-tones
      @bass-tones 10 месяцев назад +1

      I can’t believe with all the technology we have today, there are still people who think that the only way to have a functioning brake light is to tie it to the physical action of pressing a pedal…
      The brake lights are tied to rate of deceleration, not to usage of a pedal or application of friction brakes.

  • @شعرکوتاه-ع7ظ
    @شعرکوتاه-ع7ظ 11 дней назад

    Very good 🎉

  • @RameshKumar-xy5pt
    @RameshKumar-xy5pt Месяц назад

    I would appreciate it if you could share the name of some of the software tools you used to make videos.

  • @wigaringtyasid9654
    @wigaringtyasid9654 Год назад +1

    Try discussing Sosrobahu pierhead method, it looks interesting!!

  • @seanclarencesalipong7936
    @seanclarencesalipong7936 Год назад

    Now they will change our lives.

  • @zia.g63
    @zia.g63 Год назад +1

    You told that inverter keeps RMF speed lower than rotor speed by applying specific frequency current. And then inverter takes back power from coil. How does you can control the frequency of current when you are drawing energy from the coil?

  • @musicplus6306
    @musicplus6306 Год назад +3

    It's been a while since you reuploaded lol

  • @mlassz009
    @mlassz009 Год назад +1

    Got to love engineers

  • @skinnytinny9023
    @skinnytinny9023 День назад

    Why can't the car coast instead of either accelerator or brake?

  • @sakdinesh19
    @sakdinesh19 Год назад

    Hi bro how are you bro, I am big fan of you, and I am for tamil Nadu❤

  • @benho4310
    @benho4310 11 месяцев назад +1

    This works for induction motors. What about the new tesla cars that use IPM-SynRM electric motors?

    • @mqb3gofjzkko7nzx38
      @mqb3gofjzkko7nzx38 9 месяцев назад

      All electric motors are reversible with the right controls.

  • @akashkumarmahtoprotech6855
    @akashkumarmahtoprotech6855 Год назад +1

    why i am not able to watch members only videos,I am a new member of your channel, I joined lesics members for members only video .please do it public from private.(I am a student).

  • @NalinDubey
    @NalinDubey Год назад

    Which software is used to create these videos ?

  • @thanos879
    @thanos879 Год назад +2

    Just dropped 3 bangers on us.

  • @devarajan2291
    @devarajan2291 6 месяцев назад

    Great info Thanks

  • @JPJ432
    @JPJ432 Год назад +2

    Could this be used for everyday bikes?? Not when braking of course but when peddling or going downhill to accumulate the energy but into it to use later?

    • @simeonellinger2064
      @simeonellinger2064 10 месяцев назад +1

      If it worked like EVs, you'd lose speed going down hills if you used this technology but you'd be able to use it to go up hill at least.
      I think some E-bikes have similar tech to what you are asking.
      I personally wouldn't trade my fun bombing down hill at 50mph on a bike or coasting for miles for some uphill convenience but I'm sure many would.
      Guess it'd have to be a toggle for on/off when you wanted it, ideally.
      Also, regular bikes have this too already, to charge headlights and cell phones, look up "dynamo hubs" for bikes.

    • @lanzer22
      @lanzer22 6 месяцев назад

      There are many Ebike models with regen braking, but just like the video noted, efficiency greatly decrease at low speeds, so the additional range you get is much less than 10%, making it less important of a feature.

  • @DOC_951
    @DOC_951 7 месяцев назад

    Why on earth would I want my car to break if I let off the accelerator pedal? No one drives their car on the street or highway with the pedal always pressed.

  • @namavenugopal8682
    @namavenugopal8682 8 месяцев назад

    Can we use generator to run electric car??

  • @fokusnikfim
    @fokusnikfim Год назад

    Hello. Video Super 🚘🛣️👍👍👍 Thanks.......FIM👮🚂🤚

  • @jhilbermamaniquispe3226
    @jhilbermamaniquispe3226 Год назад

    What programs do you use to make your videos?

  • @medvidekkrupicka1404
    @medvidekkrupicka1404 Год назад +1

    Does it mean that in electric cars there is no functional analog to classic combusting car's „Neutral“ or clutch pedal pressed, when the car moves solely via it's own kinetic energy?

    • @beakmann
      @beakmann Год назад +1

      That's right, motor is always connected to wheel

    • @medvidekkrupicka1404
      @medvidekkrupicka1404 Год назад

      @@beakmannHello, thanks for answering my question. Well, that seems pretty ineffective to me, as the motor either drives the wheels or is driven by the wheels and recuperates, which probably means quite substantial losses in the charging / power conversion train.
      I use the Neutral gear all the time when driving my 1.7 CRTD diesel Opel Astra. That way it only consume about 4.2 l/100km.

    • @lefotografion
      @lefotografion Год назад +1

      ​@@medvidekkrupicka1404regen can be about 90% efficient. But yea, sometimes it sucks to be unable to roll

    • @simeonellinger2064
      @simeonellinger2064 10 месяцев назад +1

      In some EVs there is.
      You can turn off Regen entirely in some models.

  • @Sivah_Akash
    @Sivah_Akash Год назад

    Wow! A bike lane!

  • @DmDetails
    @DmDetails Год назад +2

    Great info. Super efficient

  • @nikhilantani1389
    @nikhilantani1389 Год назад

    Please explain RMF speed. What is RMF?

  • @brynx24
    @brynx24 Месяц назад

    we need this in the m2 g87

  • @ej-230shashank9
    @ej-230shashank9 Год назад +4

    They should use this concept of regenerative braking in normal combustion based vehicles ...so that the battery used for headlights purpose can charge easily... Without replacing it... Btw great video

    • @michalakdotnet
      @michalakdotnet Год назад +16

      Alternator

    • @siontheodorus1501
      @siontheodorus1501 Год назад +4

      Normal combustion engine already has alternator that takes some energy from the engine and converts it into electricity. Headlights are pretty low power so it isn't a big load, but for A/C that one requires big power especially when the compressor is on.

    • @Foersom_
      @Foersom_ Год назад

      Lots of new gasoline cars in EU since 2020 are now mild-hybrids with 48 V battery charged during regen braking.

    • @bass-tones
      @bass-tones 10 месяцев назад +1

      A normal car battery can’t handle the amount of power that regenerating creates. At peak regen can be pushing 80kW or more of power, depending on the car.
      You need a separate high voltage battery to do this. Only hybrids and EVs can do it.

  • @Ilia_Karamfilov
    @Ilia_Karamfilov Год назад +2

    0:10 Not only Tesla have this but almost every new car

  • @timorum
    @timorum Год назад

    Once you get used to it (like a week) it sux not having it.

  • @alexgonzalez7395
    @alexgonzalez7395 Год назад

    I use this all the time in a Tesla . Would it wear out any component faster?

  • @adamesd3699
    @adamesd3699 7 месяцев назад

    One issue with regenerative braking is that the car slows down, but usually the rear brake lights don’t come on. So the driver behind you might not realize you’re slowing down.

    • @Tom-dt4ic
      @Tom-dt4ic 6 месяцев назад +1

      My rear brake lights come on in my Model Y when I use regenerative braking.

    • @dvs21a
      @dvs21a 5 месяцев назад +1

      Mine come on.

    • @sorinpirtea2306
      @sorinpirtea2306 Месяц назад

      If the driver behind you pays attention to the phone instead of watching the road and the car in front on him/her, then if your brake lights are on or off doesn’t matter at all.

  • @jaromirandel543
    @jaromirandel543 Год назад

    What to do when I want to coast.

    • @simeonellinger2064
      @simeonellinger2064 10 месяцев назад

      Turn off Regen braking.
      I think you can't do that in a Tesla but you can in some EVs.

    • @moarsaur
      @moarsaur 8 месяцев назад

      Rethink your priorities.

  • @DrDrift-rl6cc
    @DrDrift-rl6cc Год назад +1

    only 10%?
    seems low... anybody know why it's not so efficient?

    • @gabedarrett1301
      @gabedarrett1301 Год назад

      I read somewhere that it's 20-60%

    • @bass-tones
      @bass-tones 10 месяцев назад +1

      I don’t know if that number is accurate but keep in mind he’s talking about efficiency for driving overall. Regen can only recover energy when you’re slowing down. So if you’re just cruising on a highway for example, it’s not doing anything.
      In terms of merely regen itself, ignoring total car efficiency, regen is about 85% efficient (in terms of converting your kinetic energy to electric). So the process is very efficient. It’s just that the majority of driving does not involve stopping, so the overall efficiency boost isn’t huge.

    • @moarsaur
      @moarsaur 8 месяцев назад

      Increasing your range by 10% by recouping energy lost to unnecessary acceleration or banking energy on downhill runs is huge. If you over-accelerate and over-brake, and never change those habits despite the car telling you it's killing your range, then technically regenerative braking might be extending your range more than 10%, but your total range will still be less than if you were driving sensibly.

  • @jpizel1070
    @jpizel1070 Год назад

    The first time I drove a Tesla, I thought the regen braking felt so weird. Now I can't drive without it and don't think I can go back to a car without this feature.

  • @aymanhassouna2981
    @aymanhassouna2981 Год назад

    Please.. Video about in wheel motor design & technology

  • @EricPham-gr8pg
    @EricPham-gr8pg 8 месяцев назад

    For emergency brake the reverse excited slow the motor fast then hydrolic add on stop tge cars but we must control current so no locking

  • @xubious
    @xubious 5 месяцев назад

    Why are they allowed to have no brake lights when doing this? Driving behind one in traffic is annoying

  • @ahmadalhwejh9026
    @ahmadalhwejh9026 Год назад +2

    But wait, induction motors don't generate electricity when turned.
    The process is much more complicated

  • @EnvyTheRealest
    @EnvyTheRealest Год назад

    So it has nothing to do with heat? I always thought it was heat that creates regenerative breaking. I always knew that dont make any sense. I was questioning how are turning the heat the break rotors makes into electric power to charge the batteries. Thanks for this video, now o know it a motor that is primary tool for the charging, now that make alot of sense to me

    • @moarsaur
      @moarsaur 8 месяцев назад

      We could build in a steam boiler, but that would be a lot of extra parts.

  • @bozzalnw5357
    @bozzalnw5357 Год назад +2

    this is why EV is better than internal combustion engine.

    • @DemPilafian
      @DemPilafian Год назад

      Maybe some people have nothing to do so they enjoy going to the auto repair shop to get new brake pads installed. And don't forget oil changes, replacing the timing belt, transmission repairs, and smog checks!

    • @tompsheridantsheridant7354
      @tompsheridantsheridant7354 Год назад

      SSAKCAJ SDRAWKCAB TAHT TOG UOY

  • @MrBarcadz
    @MrBarcadz Год назад

    God bless you

  • @bedi5604
    @bedi5604 Год назад

    Yes, but I still don't understand, that how this supply the motor and regenerate power from the motor simultaneously?

    • @simeonellinger2064
      @simeonellinger2064 10 месяцев назад

      It just flips from the motor spinning the tires with battery power, to the tires spinning the motor instead as your car is rolling.
      The hard work of cranking the motor slows the tires down and the reversal also puts power into the battery.

  • @_NoName0
    @_NoName0 Год назад

    01:03 *Lorentz force law

  • @starpawsy
    @starpawsy 11 месяцев назад

    Except that due to inefficiencies and friction and air resistance and a whole lot of other factors in well, all parts of the system, only a small portion of the energy used in going up a hill is returned to the battery. A very small portion indeed.

    • @FrunkensteinVonZipperneck
      @FrunkensteinVonZipperneck 9 месяцев назад

      Check data. Driving down through mountains, a battery can recharge almost all the energy used going uphill.

    • @starpawsy
      @starpawsy 9 месяцев назад

      @@FrunkensteinVonZipperneck Wrong . Completely wrong. What I said 2 months ago remains true. Very very little energy is recovered.

  • @GFKCEG
    @GFKCEG Год назад

    So this means you can't just lift your foot on a slope to save energy like on a normal car?

    • @se6586
      @se6586 Год назад

      I think you would have to keep your foot on the accelerator pedal lightly but then the cars weight would pull the car down faster, meaning the RMF would be rotating faster than the motor so it would be charging it, if I am understanding this correctly. If you are fully off the throttle I think you will regren but still slow down. If you are light on the throttle I think you will regen and keep speed.
      Can anyone confirm or correct me?

    • @BlackStar2161
      @BlackStar2161 Год назад +2

      There are some EVs where you can adjust the amount of regen or turn it off completely

  • @johncampbell-zj2yj
    @johncampbell-zj2yj 10 месяцев назад

    This has been around for 75 years on locomotives. It's call dynamic braking.

  • @liamgolfin3120
    @liamgolfin3120 Год назад

    At what point is the system smart enough to know you are coasting to slow down/stop versus coasting to maintain speed? Ex: let off the gas because I see a stop sign up a head, great way to regain energy since I will be stopping regardless. But what if I just want to “coast” down a slight hill. I’m not gonna add gas, let gravity do the work, but it seems like in this system I’ll be pulling energy and therefor slowing down compared to a standard car. Then (as physics works/commute type scenario), I will need to at some point regain that height (energy) and there is always an efficiency loss somewhere. I’m asking now or in the future will we be able to optimize for true coasting conditions versus “taking your foot off the gas” conditions

    • @BobbieGWhiz
      @BobbieGWhiz 11 месяцев назад +1

      You simply ease off the accelerator pedal, not take your foot off completely, and then it does what you would call coasting. It feels very simple and natural.

    • @moarsaur
      @moarsaur 8 месяцев назад

      It's not all-or-nothing. You can ease off the accelerator in one-pedal steering, or in some vehicles use paddles by the steering wheel to "downshift" or "upshift" for different levels of regeneration and braking power.

  • @rashmiRanjan20246
    @rashmiRanjan20246 Год назад

    I have a query:
    My electric car shows "flat line for Energy Consumption History" for the periods when Cruise Control is used...
    Does it mean that the Electric car always consume "same energy when Cruise Control" is used, irrespective of Running Speed?

    • @zia.g63
      @zia.g63 Год назад

      During cruise mode, you only need energy to overcome the frictional drag offered by air and friction due to tire rolling on ground. This energy is very less than accelerating a vehicle. Further modern cars are very aerodynamic, hence they have low drag resistance.
      This drag also depends on vehicle speed you are going but as you would usually use cruise mode on relatively close speed values therfore it shows same line.

    • @rashmiRanjan20246
      @rashmiRanjan20246 Год назад +1

      @@zia.g63 Let me rephrase the query
      "Cruise at 40kph and Cruise at 90 kph.
      Which one will be taking more charge (given that both have flat line)?"

    • @siontheodorus1501
      @siontheodorus1501 Год назад +1

      @@rashmiRanjan20246 ofc the 90 kph will take more power and deplete your battery faster.

    • @rashmiRanjan20246
      @rashmiRanjan20246 Год назад

      @@siontheodorus1501 Thanks, so the flat line on energy history is unreliable?

    • @siontheodorus1501
      @siontheodorus1501 Год назад +1

      @@rashmiRanjan20246 if it just shows consumption history with only a line without any values or scale shown, i guess it is more to unusable instead of unreliable

  • @kevinburke6743
    @kevinburke6743 10 месяцев назад

    Doesn't regenerative braking cause more heat in an already HoT motor?

    • @logitech4873
      @logitech4873 9 месяцев назад +1

      The motors don't run very hot at all.

    • @kevinburke6743
      @kevinburke6743 9 месяцев назад

      @@logitech4873 It depends how fast & hard you run them. That is why over boost or "Pass" is only for a few seconds. Also braking generates tremendous heat, so much so even Carbon Composite rotors glow red on F1 & Indy cars. Can a motor really turn the friction from braking heat into electricity at the rate required in the time available?

    • @logitech4873
      @logitech4873 9 месяцев назад

      @@kevinburke6743 "boost" or "pass"? Huh?
      The motors absolutely don't run very hot. They are liquid cooled and shouldn't go above around 100-120°C.
      When I drove around Nürburgring 3 times this summer in my Model 3 with regen set to full, the motors never got very hot. I had contact microphones mounted to one of the motors via plastic clips, and they stayed on all day.
      Friction brakes convert almost all of the energy to heat.
      Regenerative braking converts ~80% of the energy back to battery storage. The heat from this is easily managed by the cooling system.

    • @kevinburke6743
      @kevinburke6743 9 месяцев назад

      @@logitech4873 Good to know, so why don't they put oversize or additional motors on EV's to do all the braking? Or is it legislation? A car (EV) without traditional brakes would be so much easier to maintain! No pads or rotors, no dual circuit hydraulics. A good chunk less unsprung mass! So it would be only steering and tyres that would be wear/replace when worn parts?

    • @logitech4873
      @logitech4873 9 месяцев назад

      @@kevinburke6743 Modern EVs already do the vast majority of braking via regeneration. I almost never use the disc brakes on my Model 3.
      However there are several good reasons to keep the physical brakes:
      1 - Regeneration braking is never as strong as hydraulic brakes. You wouldn't be able to brake as fast in an emergency.
      2 - When coming to a complete stop, normal brakes do a much better job at keeping the car stationary.
      3 - When the battery is at 100%, regeneration will not work because the battery cannot take more charge.
      4 - When the battery is very cold, regeneration will be much weaker because the battery cannot accept a very fast charge. (Battery needs to be 20°C+ for optimal regeneration)
      5 - If your car malfunctions, it's important to have a mechanical backup for braking.
      So for now it's best to keep both.

  • @aresivrc1800
    @aresivrc1800 Год назад

    Thank you

  • @CFG39
    @CFG39 10 месяцев назад

    I was very confused about which Tesla they were talking about until they specified “Tesla car” 4 times.

  • @thomasgade226
    @thomasgade226 Год назад

    American accent, British steering. Perhaps an Irish leprechaun made this video 👯

  • @magnusjohansson5383
    @magnusjohansson5383 3 месяца назад

    The drive unit coolant seal has a faulty design resulting in the rotor bearing gets flushed by coolant, resulting in a total driveunit failure, i have had my driveunit replaced 4 times, now it is starting to break down again, Tesla has not fixed this issue.

  • @maemilev
    @maemilev 11 месяцев назад

    Now i understand when the inverter fail to regenerative brake, you won't be able to brake too.

    • @logitech4873
      @logitech4873 9 месяцев назад +1

      The mechanical brakes are still there, obviously. I have never heard about regenerative braking "failing" though. It's a very reliable system.

  • @larcomj
    @larcomj Год назад

    @0:06 this is obviously a car with the steering wheel on the wrong side........

  • @markmalasics3413
    @markmalasics3413 Год назад

    I noticed that in the animation that showed the Tesla interior there was no fire extinguisher mounted within view. In this normal?

  • @KiranMd-xg7ki
    @KiranMd-xg7ki Год назад

    Tata Nexon ev I love it regenerating system I am from India

  • @cammos
    @cammos Год назад

    Why cant we just use the power of the wheels turning while u drive meani g the need for just initial charge surely thats possible y use brakes only reason i can think of is big oil companies??

  • @rouchar
    @rouchar Год назад +1

    For every kilowatt that regen saved, an anti-EV boomer gets a heart attack.

  • @adfggffffffddffd
    @adfggffffffddffd 7 месяцев назад

    Just so people know, neither Elon nor Tesla motors company engineers for that matter came up with the concept of regenerative braking. It has been around for decades and a number of other companies were utilizing it before Tesla Motors was even a company.

    • @PyroShields
      @PyroShields 7 месяцев назад

      What companies?

    • @adfggffffffddffd
      @adfggffffffddffd 7 месяцев назад

      @@PyroShields Car companies... You know, like Toyota, Chevy, Hyundai.

    • @PyroShields
      @PyroShields 7 месяцев назад

      @@adfggffffffddffd A quick research tells me it was invented here in America (AMC). Toyota Prius was the first EV (hybrid) to utilize it.

    • @adfggffffffddffd
      @adfggffffffddffd 7 месяцев назад

      @@PyroShields 👍

  • @tomasicenogle
    @tomasicenogle Год назад +3

    I'd like to point out that one isn't slower than the other, but out of phase.

  • @yalkn2073
    @yalkn2073 Год назад

    Nice explanation, but it's a confusing nsme

  • @4144758
    @4144758 9 месяцев назад

    RMF = Rotating Magnetic Field

  • @cartestgroupoy2441
    @cartestgroupoy2441 Год назад

    So there is still so much space before it's green energy and could power households but then again it would not benefit so much electric companies but it would save battery materials

  • @StonScience
    @StonScience Год назад

    What's wrong with lesics, Why are they re-uploading?

  • @U0EN0
    @U0EN0 Год назад

    WMB product placement

  • @dmitrysysoletin9967
    @dmitrysysoletin9967 Год назад +1

    I have a Nissan from 1994 with manual transmission and diesel with mechanical pump (no electronics in the engine/gearbox). And I also have one-pedal driving in it, I apply brakes only for complete stop. So nothing special in braking when you release the gas pedal.

  • @gurwinder7307
    @gurwinder7307 Год назад

    Guys, i am not sure how expensive these videos get . Not sure why you are in financial trouble. I never heard any RUclipsr saying not even new channels