Those are still Torx screws, they're called "External Torx" or "Inverted Torx", or vendor-neutrally "Hexalobular External" (as opposed to "Hexalobular Internal" for the regular ones). The tool sizes for the external ones start with E instead of T.
Bonus name: My friends here in the States almost always refer to them as "Oh Sh*t" Rings as they have a habit of shooting off the end of your snap-ring tool at high velocity--and they almost never hit anyone in the eyes!
I did record two, but the circuits didn’t work both times unfortunately. I think for it to be stable it’ll probably need a microcontroller but I’m hoping to do something with it at some point, might be a while though.
video yang luar biasa teman👍👍, sebagai saran saja jika ingin memaksimalkan kinerja motor mungkin harus menggunakan perangkat dan software sesuai dari sistem dan mekanisme yg digunakan perusahaan produsennya, namun jika ingin melakukan experimen sederhana dan sesuatu yg seru dengan motor tersebut mungkin dapat menggunakan rangkaian dan pengaturan sederhana dari bedini motor dengan beberapa penyesuaian komponen tentunya, dan atau dari dad hav yang menggunakan rangkaian osilator sederhana untuk menggerakkan motor bldc hanya melalui satu atau dua lilitan kumparan dan tanpa sensor🙏🙏, tetap semangat, sehat dan sukses selalu😁, ditunggu upload video menarik lainnya🙋🏽
So…. From experience… 8 years running performance dynos for the development lab at BorgWarner developing PMAC from 60kW to 400kW machines… your back EMF waveform looks wrong. The phases should be 120 phase offset… check your sense leads or daq set up! I’ve made that mistake 100 times.
It may be the resistance windings -> ground (housing) that scrapped it. With an isolation tester (set to 500V) measure the resistance. Also it should already have a resolver (encoder) attached to it, I think it is the white wire sticking out of it.
Unfortunately I don’t have an insulation tester (yet). The white wires seem to go to a thermistor in the stator, there is only two conductors so it can’t be a resolver. I think the rotor of the resolver is still on the shaft (can be seen at 6:05) but the stator is sadly not
Could it be that the different inductance you measured on one phase was due to the particular rotor position? Just curious. Thanks for sharing this and other nice videos!
Sorry I can’t 3D scan it. And I’m not sure about the ratio I’m sure it’ll be online somewhere though. A complete guess based on similar gearboxes would be 7:1
While the electric motor may be simpler and lighter, than an ICE try picking up the fuel supply for 260 mile range in an EV compared to an ICEV! And the tank in an EV doesn't get lighter as the fuel is used, so you're always lugging the maximum mass about, regardless of range.
So…. From experience… 8 years running performance dynos for the development lab at BorgWarner developing PMAC from 60kW to 400kW machines… your back EMF waveform looks wrong. The phases should be 120 phase offset… check your sense leads or daq set up! I’ve made that mistake 100 times.
Yes I added a little caption at 8:02 explaining that one phase is inverted, this was due to my probe setup but I don't remember why I didn't just flip it. My apologies. Also your job sounds very interesting, I have used a BorgWarner/Sevcon inverter quite extensively for Formula Student and (some of) it is really nice!
10 / 10 for the video. 6 / 10 for the sound effects. Loves it 😂
You definitely have an art at explaining fundamentals. Wished you could do more content. Thanks
I should have more time soon, fingers crossed!
Those are still Torx screws, they're called "External Torx" or "Inverted Torx", or vendor-neutrally "Hexalobular External" (as opposed to "Hexalobular Internal" for the regular ones). The tool sizes for the external ones start with E instead of T.
Anyone that's worked on an MB knows the ol' E-Torx, fun stuff :D
I-Pace is 400V, not 800V. Great vid, thanks!
Hey great video man I'm having a great time watching it, the springy ringy things are called CirClips, or retaining springs, or snap rings!
Bonus name: My friends here in the States almost always refer to them as "Oh Sh*t" Rings as they have a habit of shooting off the end of your snap-ring tool at high velocity--and they almost never hit anyone in the eyes!
@@adricklynn8882 when thay avoid eyes they end up in an unreachable area,it's a physics law
Great video! It's great to see you back as well 😁
Thanks! Great to see you back too G
Happy to see you back! Now it’s time for a new inverter project! ❤
I’m already working on a 30kW one for formula student. Hoping to borrow one of those once they’re done haha!
Great to see you upload again. Awaiting the next video on the Direct Current Control series. Cheers 🥂
I did record two, but the circuits didn’t work both times unfortunately. I think for it to be stable it’ll probably need a microcontroller but I’m hoping to do something with it at some point, might be a while though.
👍👍
The bolts you speak of at the beginning of the video are known as either: External Torx bolts, or Torx bolts.
Great video !
video yang luar biasa teman👍👍, sebagai saran saja jika ingin memaksimalkan kinerja motor mungkin harus menggunakan perangkat dan software sesuai dari sistem dan mekanisme yg digunakan perusahaan produsennya, namun jika ingin melakukan experimen sederhana dan sesuatu yg seru dengan motor tersebut mungkin dapat menggunakan rangkaian dan pengaturan sederhana dari bedini motor dengan beberapa penyesuaian komponen tentunya, dan atau dari dad hav yang menggunakan rangkaian osilator sederhana untuk menggerakkan motor bldc hanya melalui satu atau dua lilitan kumparan dan tanpa sensor🙏🙏, tetap semangat, sehat dan sukses selalu😁, ditunggu upload video menarik lainnya🙋🏽
So…. From experience… 8 years running performance dynos for the development lab at BorgWarner developing PMAC from 60kW to 400kW machines… your back EMF waveform looks wrong. The phases should be 120 phase offset… check your sense leads or daq set up! I’ve made that mistake 100 times.
very cool work subbed!!!!!
@electrcarc240 the casing is very similar to the EM61 nissan leaf motor
Perhaps the G/box has the park park in it like a conventional automatic?
Just got to section where you released it
Nice prediction!
Slow speed always has cogging torque… always.
It may be the resistance windings -> ground (housing) that scrapped it. With an isolation tester (set to 500V) measure the resistance.
Also it should already have a resolver (encoder) attached to it, I think it is the white wire sticking out of it.
Unfortunately I don’t have an insulation tester (yet). The white wires seem to go to a thermistor in the stator, there is only two conductors so it can’t be a resolver. I think the rotor of the resolver is still on the shaft (can be seen at 6:05) but the stator is sadly not
It may be that you removed the resolver at 3:10.
Would you happen to have pictures of that too?
700 subscribers.. I guess, that changed a little bit over the last year. :)
😁
Could it be that the different inductance you measured on one phase was due to the particular rotor position? Just curious. Thanks for sharing this and other nice videos!
Good suggestion, I don't think I tried rotating it. Though there was definitely something wrong because it had been thrown out :(
Could adding a capacitor with one of the phase help with starting and stalling?
Not in this case, capacitance on the output of a conventional voltage source inverter is very undesirable it can cause quite a few problems
Wasnt orange winding 180° off? Wound backward?
How did you come up with 250amp max, just from the 800v input?Very cool video
What uni are you at? or what course? eee?
University of Nottingham and yes EEE
PMACs have a hard time holding 0 speed… it’s very very difficult to control AT 0…
4:46 get some c clip pliers
Yep I really need to!
@@electrarc240 I've always known them as circlips (circular clips?).
Brilliant! Am do you have possibility to make 3d scan to cad of a compleat unit..??
And what is the transmition ratio?
Sorry I can’t 3D scan it. And I’m not sure about the ratio I’m sure it’ll be online somewhere though. A complete guess based on similar gearboxes would be 7:1
@@electrarc240 gearbox no info.. I checked... 3d scan easy peasey with phone especially if you have iPhone LLIDAR
I do not have a fancy iPhone I wasted all my money on test gear and components lol. Just checked the gearbox ratio it is 9:1 or very close
@1:50 mmmhmm
Hmmm
While the electric motor may be simpler and lighter, than an ICE try picking up the fuel supply for 260 mile range in an EV compared to an ICEV! And the tank in an EV doesn't get lighter as the fuel is used, so you're always lugging the maximum mass about, regardless of range.
Both have pros and cons I agree. I'm very biased though due to my background so I will be quiet now haha
Yes both have pros and cons, but I know which I prefer - having driven electric for four years now.
you must use that motor on something
Definitely!
Washing machine spin cycle upgrade....
So…. From experience… 8 years running performance dynos for the development lab at BorgWarner developing PMAC from 60kW to 400kW machines… your back EMF waveform looks wrong. The phases should be 120 phase offset… check your sense leads or daq set up! I’ve made that mistake 100 times.
Yes I added a little caption at 8:02 explaining that one phase is inverted, this was due to my probe setup but I don't remember why I didn't just flip it. My apologies. Also your job sounds very interesting, I have used a BorgWarner/Sevcon inverter quite extensively for Formula Student and (some of) it is really nice!
@@electrarc240 did you use DVT to program the sevcon? Which sevcon did you use?
Unfortunately yes I did use DVT, software so crap the motor locks up when you drag a window because the CAN messages stop. I used the HVLP-20