Votol EM-200 Controller

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SilentEnduro   10 W

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Votol EM-200 Controller

Post by SilentEnduro » Jan 10 2020 9:28am

Welcome to discussion regarding Votol EM-200 Controller.
Votol EM-100 and EM-150 discussion is here - http://endless-sphere.com/forums/viewto ... 6dde552e59

Here what I got for now:

Wiring diagram
wiring.jpg
wiring.jpg (243.74 KiB) Viewed 4493 times
Default config
Screenshot_1.jpg
Screenshot_1.jpg (75.77 KiB) Viewed 4493 times
Screenshot_2.jpg
Screenshot_2.jpg (93.16 KiB) Viewed 4493 times
Screenshot_3.jpg
Screenshot_3.jpg (74.99 KiB) Viewed 4493 times
Size comparison EM-200 (left) EM-150 (right)
size.jpg
size.jpg (206.58 KiB) Viewed 4493 times
Will try to test it with QS138 Motor

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Jan 10 2020 11:44am

Isn't that usually paired with EM-150S?

Any advantages going bigger?

I might go to the QS hub 273 for more power, looking for better than Kelly 7230S

Have been eying Sabvoton for FOC

Does Votol make anything along those lines?

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » Jan 10 2020 12:20pm

Em150 is way more powerful than kelly kls7230, don’t think you need more for the 273

@silentenduro: Itll be interesting to hear if you get any higher torque from the increased phase current.

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Jan 10 2020 12:57pm

kls7230 is what QS quoted me for the 273

Obviously if Em150 is plenty to get max use of their 273, it would be crazy oversized for the 138!

I'm trying to get to (or near) 130 N.m if that's relevant.

My main question though, aren't there downsides driving a small hub motor with a grossly oversized controller? Even if only energy efficiency i.e. range?

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » Jan 10 2020 1:57pm

john61ct wrote:
Jan 10 2020 12:57pm
kls7230 is what QS quoted me for the 273

Obviously if Em150 is plenty to get max use of their 273, it would be crazy oversized for the 138!

I'm trying to get to (or near) 130 N.m if that's relevant.

My main question though, aren't there downsides driving a small hub motor with a grossly oversized controller? Even if only energy efficiency i.e. range?
It’s all in the kV which is 60 for the 138 70h mid drive. To get max torque you’d need a 56/(9.55/60)=352A phase current controller.

I guess the kV is about 12 for the 273? 130/(9.55/12)=163A phase current controller would in theory get you there.

The grossly oversized controller would be a lot more robust but efficiency-wise i cannot say since i don’t know how many fets and how well they match the 273 motor. I would not buy a Kelly if i had other options, they suck.

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Jan 10 2020 2:38pm

Very helpful, thanks, 163A seems reasonable. Is that to get to my max 130 N.m or the max the 273 can put out safely? I assume the latter is higher. . .

(edit, max torque for 273 is claimed about 267 N.m)

So, besides the lack of FOC and the USB snafu, what else sucks about KTs?

Sabvoton the way to go if not Votol?

Sorry, got wires crossed before,

from QS:
____
For the motor we suggest you use 40*4T, which the RPM is about 660RPM @72V(KV9.16), max speed is about 50km/h

The max phase current for the motor is about 326.4A

For the controller we suggest is SVMC72150 which max phase current is 350A.


john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Jan 10 2020 2:41pm

To the OP, sorry for the hijacking, say the word and I'll fork off to a new thread 8-)

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » Jan 10 2020 2:51pm

So the motor must be well into saturation at max torque as it should be enough with 256A current.
Svmc is sabvoton? I’ve read about too many breaking to want one . KT i don’t know now since it was years since i had one.
I think this is too OT to continue in this thread.

Chany   1 µW

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Re: Votol EM-200 Controller

Post by Chany » Apr 13 2020 7:04pm

Does anyone know the actual high voltage limit of this controller? Will it do 90.5 like what is in the settings in the first post? I have one on order and want to run the highest volts possible.

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SilentEnduro   10 W

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Re: Votol EM-200 Controller

Post by SilentEnduro » Apr 13 2020 11:15pm

Chany wrote:
Apr 13 2020 7:04pm
Does anyone know the actual high voltage limit of this controller? Will it do 90.5 like what is in the settings in the first post? I have one on order and want to run the highest volts possible.
Max voltage is 90.
Btw, did you tried to run it already somehow?
Because it seems that all EM200 are buggy and better to replace it by warranty.

Chany   1 µW

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Re: Votol EM-200 Controller

Post by Chany » Apr 14 2020 4:32am

Looks like I will run 21s to stay under 90 volts. I’m waiting for controller to arrive, also waiting for QS 4000 watt mid drive, next size up from the 138.

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SilentEnduro   10 W

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Re: Votol EM-200 Controller

Post by SilentEnduro » Apr 15 2020 12:30am

Chany wrote:
Apr 14 2020 4:32am
Looks like I will run 21s to stay under 90 volts. I’m waiting for controller to arrive, also waiting for QS 4000 watt mid drive, next size up from the 138.
:bigthumb:

Bartosh   100 W

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Re: Votol EM-200 Controller

Post by Bartosh » Apr 15 2020 3:57pm

Regarding em200, QS' stand:
i suggest not to purchase EM200P controller at this moment. It still has some problems. And engineer is working on the issues now. It still needs about 1 month now.

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Apr 16 2020 6:58am

Chany wrote:Looks like I will run 21s to stay under 90 volts. I’m waiting for controller to arrive, also waiting for QS 4000 watt mid drive, next size up from the 138.
Could you link to the specific motor you mean?

Chany   1 µW

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Re: Votol EM-200 Controller

Post by Chany » Apr 21 2020 4:40am

Here is a screen shot of motor specs
Attachments
9D4F4D38-402E-4FBA-BFCD-CBB154A66599.png
QS 4000 watt
9D4F4D38-402E-4FBA-BFCD-CBB154A66599.png (442.53 KiB) Viewed 3489 times

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Apr 21 2020 11:28am

Very odd, the torque spec being so low.

"205 45H V3" is rated only 2000W but 160N.m

"205 50H V2" at 3000W rated 180N.m

So how can a 4000W motor only put out 60-80?

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » Apr 21 2020 11:38am

torque increases with the airgap diameter squared, it's also proportional to pole count so it increases even further on the hub motor

(205/138)^2=2,21

Power= torque*rpm/9.55

either it's torque or speed that creates the power, you choose.

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » Apr 21 2020 12:10pm

None of that has meaning for me.

I was trying to figure out what motor he's referring to is all.

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » Apr 21 2020 2:07pm

Sorry, i thought this was a question so i answered it:
So how can a 4000W motor only put out 60-80?

Pota   100 W

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Re: Votol EM-200 Controller

Post by Pota » May 13 2020 6:12am

Cyclone 18kw vs the new 4000w to QS?
Who has the most torque? It states the Cyclone can max out at 120nm at higher amperage.

Is the qs very underrated?

john61ct   100 GW

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Re: Votol EM-200 Controller

Post by john61ct » May 13 2020 6:53am

larsb wrote:Sorry, i thought this was a question so i answered it:
So how can a 4000W motor only put out 60-80?
Yes, and I appreciate the attempt.

I was just pointing out my low level of understanding. Maybe as I learn more it will in future make sense for me.

Pota   100 W

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Re: Votol EM-200 Controller

Post by Pota » May 14 2020 3:20pm

Noone tried the Votol EM-200?
Some say its buggy, does that mean all?

chrborup   1 µW

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Re: Votol EM-200 Controller

Post by chrborup » May 15 2020 1:37am

Pota wrote:
May 14 2020 3:20pm
Noone tried the Votol EM-200?
Some say its buggy, does that mean all?
I would like to know the same thing - just ordered it 🙈

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Re: Votol EM-200 Controller

Post by gbeals » May 20 2020 2:55am

Also very close to pulling trigger on the 4000 QS and EM200. Seems like a good winner from what I'm reading; but so new no real life tests as far as I have found. I'm shooting for loads of torque and 40mph top speed, with a 2 stage reduction. In theory of course. :|

larsb   1 MW

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Re: Votol EM-200 Controller

Post by larsb » May 20 2020 3:06am

if you only want 40mph top speed then the 3000W motor is enough for most applications, if you gear 1:8 you'll have up to 450-500Nm at the rear wheel

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