@@BH4x0r YUP...literally not a damned thing! No noob to electronics with the most basic understanding of power electronics would build a power stage this way as anything other than a really slapped together prototype!
That is ridiculous! all that crap but using great SMT fets.. why not balabnce the "quality" and use bunch of IRFP4115 instead... lol.. at least it would match the minimum performance of the rest of the assembly!😂
Modern 3SHUL controllers are fine. They did have some design issues early on in development, but that's not the case any more. That's not to say that you can't blow one up, because that's true for any controller! VESCtool gives you the ability to make setting changes that are potentially damaging or destructive to the controller. Lots of people blame the controller when they blow their VESC controller and it's entirely operator error! So while SHUL is pretty decent designs, that's not going to stop users from making setting changes that can still destroy the controller. VESC is a 2 edged sword. All that capability and setting options are fantastic for getting optimal performance from your EV set up. It's also something that can be abused or set wrong that destroys things too!
Thank you very much. I'm not that new to VESC controllers, so I'm definitely aware that you can blow up any controller if you don't stay within the limits or if you're careless. I just wanted to ensure that they don't have any major design flaws. I'm not completely settled on 3ShuL; I'm also considering the STR 500 from Trampa. @de-bodgery
Lol there is no automated process in the production line to wash or properly solder some of the components so this will continue as long as too much controllers don't blow under warranty
KO will never tell us to confirm what I believe is the case. The power stages are very probably built in 2 steps. It would be silly to hand place all the SMD parts so they are logically machine placed. Considering the plumbers copper strapping is commonly crooked and inconsistently placed, that is very probably hand placed. The board is then put through a reflow oven a second time. Or at least that is how it looks to me. With a better layout/design, the entire power stage could be reflowed just once and done all by machine.
I over tightened one of the bolts on the stud and ripped it off the controller. How much should I pay for someone to fix that. And would you be willing to fix it, if I paid you?
Do you think that a potted Flipsky fsesc 75350 can hold up better than without potting. The water cooling system looks like it will help keep it cool enough, but what are your thoughts?
Potting will help with keeping out water. If it's thermally conductive potting, it will also act as a thermal path for warmer areas to conduct heat to cooler areas of the potting and possibly to whatever heat sink there is. This won't really help a marginal controller design all that much and that's what Flipsky makes.
I just bought red insulating varnish from MG chemicals for my motor. Now I would like to use clear conformal coating to protect circuit boards, is there anything I should know before I do?
Keep the conformal out of connectors and switches. If there are any vents or microphones, keep it out of there too. Push buttons get particularly jammed up if they get conformal in them. Any lectronic component can get coated. Any bare circuit trace...same.
Which controller do you think is the best for 200 continuous amps? I’ve been looking at the fardriver 72450, votol em200, flipsky 75200, and am open to other alternatives. What would you recommend?
@@de-bodgery Ok thanks, I appreciate it. Is your opinion based solely off of build quality, or also performance? Also, what do you think the best motor would be for these controllers? I see that you recommend the tp128, and that you have reviewed the qs165v2. Which motor do you think is better?
@@de-bodgery Ok thanks. I was curious, on the g300, it says 200 amp continuous for motor and 100 amp continuous for battery. What’s the difference? Does this mean I can only put in 100 continuous amps from my battery compared to 200 amps of the fardriver 72450?
@@schmeglyomigy6174 1. Anybody making controllers if they are honest will list a phase amps and a battery amps and they won't match up. Usually phase amps is something like 1.5X to 2X higher than the battery amperage. 2. Watts into the controller from the pack is nearly identical to watts in the motor. Watts = volts x amps 3. How you carve up that wattage can be very different in the motor than what comes from the pack. 4. As an example, you could have 82v and 100a coming into the controller. That would be 8200 watts. 5. In the motor you'll still have that 8200 watts, but the voltage in the motor might be anything like 40v to 82v or even a little more voltage. 6. That means the amps in the motor have to make up the rest of the wattage. 8200w/40v = 205 phase amps, 8200w/90v = 91 phase amps. 7. So now you see how it is that your battery amps and your phase amps can be very different and why controllers commonly list an amperage for both. 8. Not all controllers are created equal. That should be abundantly obvious by now from my many tear down videos! I have no respect for KO because their designs are dismally BAD! Far Driver is better than KO, but not as good as Votol. SZX is the best hardware designs that are not VESC that I've seen out of China! VESC in many ways defines how you are going to design the electronics. There are corners you can cut, but you can't jsut bodge stuff together like KO does and expect VESC firmware to work on that hardware! You have to meet some minimum standards to use VESC. 9. A best case controller is not as simple as just the parts used or how the circuitry is laid out. 10. The CPU and firmware running in it is important too! 11. Firmware that controls the motor commutation poorly will waste power going into the motor. Firmware that does a better job will more efficiently spin the motor and generate torque with lower losses. 12. An easy example of this is controllers that do no motor discovery. They are effectively "dumb". You just plug them into the motor and the controller assumes the motor will just follow whatever signals the controller feeds it! This is commutation by assumption and is always less efficient and wasteful of power to the motor. All the controller "knows" is the rules of basic motor commutation. 13. FOC motor control is generally the best form to get the most efficient commutation. The controller "learns" the motor during discovery to get at least basic commutation specific to that motor working. This is not "assumption" based commutation. The controller firmware ran some tests on the motor to "learn" some specifics of the motor. This gives the firmware the ability to adapt how it sends power to the motor so it generates torque how that specific motor needs it. This isn't best case operation, but it's usually enough to use the motor and usually much better than dumb commutation. 14. With basic FOC controllers such as Votol or Far Driver or KO, you don't get to make significant tweaks to how the controller sends power to the motor. There are not a lot of options to change to get best case commutation. It's better than a dumb controller. 15. Something that has the full FOC functionality such as VESC or ASI or Nukular will let you tweak settings quite a lot to get every last bit of performance per amp into the motor thanks to their more complex setup and far broader adjustability of settings. 16. To get dumb commutation takes very little processing power and very simple firmware. To get best case commutation like VESC takes a lot more processing performance and much more complex and intelligent firmware. 17. AS far as electronics design are concerned, the G300 is a far better and more efficient design than anything I've seen from Far Driver! This alone is going to make the amps the controller delivers to the motor less wasteful than a far driver. The fact the G300 is VESC and Far Driver is basic FOC will add to that too. 18. So there you go...that's a lot of stuff, but it's a general list of the details that play into any given controller out performing another. 19. People that claim that Far Driver or KO which are both basic FOC is better than VESC (full FOC suite) simply don't know what they are talking about and have no clue why their VESC controller isn't performing optimally. They probably did basic motor discovery and that is all and of course they didn't get optimal motor control! With a full FOC controller such as VESC or ASI or Nukular, you are going to want to tweak settings much more than you do for a basic FOC controller and then they always out perform basic FOC stuff.
