Re: [EVDL] Need help with Series Wound Dc motor controller.

2021-06-29 Thread EVDL Administrator via EV 
On 29 Jun 2021 at 22:52, Basem Samarah via EV wrote:

> Re sharing schematic, as a link in drop box. Please let me know if you can not
> access it. I will attempt to re-share :) or can add your email directly. 

I can see the schematic just fine here, and I have no dropbox account.  Well 
done!

David Roden, EVDL moderator & general lackey

To reach me, don't reply to this message; I won't get it.  Use my 
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Re: [EVDL] Need help with Series Wound Dc motor controller.

2021-06-29 Thread Basem Samarah via EV 
  https://www.dropbox.com/s/q8dhtxrmugmiq3u/A000.pdf?dl=0
Re sharing schematic, as a link in drop box. Please let me know if you can not 
access it. I will attempt to re-share :) or can add your email directly. 
Thanks
Basem.On Sunday, June 27, 2021, 11:24:16 AM GMT+3, Basem Samarah via EV 
 wrote:  
 
  Hi again.. Sorry, just 2 more questions. 1. Does anyone have schematic handy 
for the curtis controller family mentioned above ? 2. Is the open source ReVolt 
controller schematic available ? I tried to download it for several years and 
was never able to. Does anyone havit ? 
Thanks
Basem.
    On Sunday, June 27, 2021, 11:20:28 AM GMT+3, Basem Samarah 
 wrote:  
 
 Hi Thanks for your replies.. Sorry for replying so late (I typed a message but 
never hit the sent button). For the power section of the board, I am using 
MOSFET IPF117, do I need the power diodes as well ? I programmed the Arduino to 
generate a pwm on pin 5 and 2 with a non overlap region. It seems to be working 
but constantly battling the UCC27714 (gate driver). I attached the 
schematic.However, I removed R18 and R19, connected the Arduino pins 5 and 2 
directly to the terminals of R18 and R19 that are connected to HI and LI on the 
UCC. I bypassed the protection circuit since it is useless :). As per my 
reading online (will dig up the site), it mentioned that it is more efficient 
to pulse the bottom MOSFETs instead of using diodes. 
The problem is always with the gate driver, it some times does not work and 
gives a sawtooth signal 800mV height at the HO pin. Maybe the Diode D3 is bad ? 
 
Does the circuit look ok ? Any feedback is helpful and appreciated.I am 
visually impaired, need some cheap help to layout and draw schematic, is there 
anyone or anyplace that offers cheap help?
Thanks
Basem.
    On Sunday, February 11, 2018, 07:21:24 PM GMT+2, Lee Hart via EV 
 wrote:  
 
 paul dove via EV wrote:
> Looks a whole lot like a Curtis

Almost exactly like a Curtis 1221/1231 family controller. It's apparent 
that he saw the insides of a Curtis, and copied it. That's not a bad 
thing; the Curtis controllers were pretty successful. It's always best 
to learn from others.

There are more examples of simple controllers here:


-- 
Children are born engineers. Watch them at play. They're not just
playing; they're experimenting, building and learning. They are
engineering. Then we get them in school and squash it out of them.
(Geoffrey Orsak, Southern Methodist University dean of engineering)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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Re: [EVDL] Need help with Series Wound Dc motor controller.

2021-06-27 Thread Basem Samarah via EV 
 Hi again.. Sorry, just 2 more questions. 1. Does anyone have schematic handy 
for the curtis controller family mentioned above ? 2. Is the open source ReVolt 
controller schematic available ? I tried to download it for several years and 
was never able to. Does anyone havit ? 
Thanks
Basem.
On Sunday, June 27, 2021, 11:20:28 AM GMT+3, Basem Samarah 
 wrote:  
 
 Hi Thanks for your replies.. Sorry for replying so late (I typed a message but 
never hit the sent button). For the power section of the board, I am using 
MOSFET IPF117, do I need the power diodes as well ? I programmed the Arduino to 
generate a pwm on pin 5 and 2 with a non overlap region. It seems to be working 
but constantly battling the UCC27714 (gate driver). I attached the 
schematic.However, I removed R18 and R19, connected the Arduino pins 5 and 2 
directly to the terminals of R18 and R19 that are connected to HI and LI on the 
UCC. I bypassed the protection circuit since it is useless :). As per my 
reading online (will dig up the site), it mentioned that it is more efficient 
to pulse the bottom MOSFETs instead of using diodes. 
The problem is always with the gate driver, it some times does not work and 
gives a sawtooth signal 800mV height at the HO pin. Maybe the Diode D3 is bad ? 
 
Does the circuit look ok ? Any feedback is helpful and appreciated.I am 
visually impaired, need some cheap help to layout and draw schematic, is there 
anyone or anyplace that offers cheap help?
Thanks
Basem.
On Sunday, February 11, 2018, 07:21:24 PM GMT+2, Lee Hart via EV 
 wrote:  
 
 paul dove via EV wrote:
> Looks a whole lot like a Curtis

Almost exactly like a Curtis 1221/1231 family controller. It's apparent 
that he saw the insides of a Curtis, and copied it. That's not a bad 
thing; the Curtis controllers were pretty successful. It's always best 
to learn from others.

There are more examples of simple controllers here:


-- 
Children are born engineers. Watch them at play. They're not just
playing; they're experimenting, building and learning. They are
engineering. Then we get them in school and squash it out of them.
(Geoffrey Orsak, Southern Methodist University dean of engineering)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
___
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Re: [EVDL] Need help with Series Wound Dc motor controller.

2018-02-11 Thread Lee Hart via EV 

paul dove via EV wrote:

Looks a whole lot like a Curtis


Almost exactly like a Curtis 1221/1231 family controller. It's apparent 
that he saw the insides of a Curtis, and copied it. That's not a bad 
thing; the Curtis controllers were pretty successful. It's always best 
to learn from others.


There are more examples of simple controllers here:


--
Children are born engineers. Watch them at play. They're not just
playing; they're experimenting, building and learning. They are
engineering. Then we get them in school and squash it out of them.
(Geoffrey Orsak, Southern Methodist University dean of engineering)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
___
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Re: [EVDL] Need help with Series Wound Dc motor controller.

2018-02-11 Thread paul dove via EV 
Looks a whole lot like a Curtis 

Sent from my iPhone

> On Feb 8, 2018, at 9:09 PM, Marco Gaxiola via EV  wrote:
> 
> You can learn from this guy who designed his own controller some time ago,
> now he runs his own brand a some great products:
> http://zeva.com.au/Research/ControllerDesign/
> 
> But I can tell you from own experience: Designing your own stuff, like a
> high power motor controller is not a Cheap thing. You will require lots of
> trial and error, learn and explode lots of MOSFets or IGBTs and that
> requires time & money, but satisfaction once your prototype is running
> smooth and nice is huge.
> 
> If you are looking for cheap stuff (Cost), then you can only choose one
> more the two left: Time or Quality. But they'll never come all three
> thogether.
> 
> 
> 
> On Thu, Feb 8, 2018 at 6:25 PM, John Lussmyer via EV 
> wrote:
> 
>> On Thu Feb 08 14:38:19 PST 2018 ev@lists.evdl.org said:
>>> Hi I am a hobbiest and started my first conversion, I have a car that I
>> got retro fitted with a Series wound DC motor. I tested the car with
>> batteries alone and it did move. I am designing a controller for the DC
>> wound motor. I am running into a few issues with the controller. The
>> 
>> One good place for controller building/design work is:
>>> Evtech mailing list
>>> evt...@lists.nnytech.net
>>> http://lists.nnytech.net/listinfo/evtech
>> 
>> 
>> 
>> --
>> 
>> Worlds only All Electric F-250 truck! http://john.casadelgato.com/
>> Electric-Vehicles/1995-Ford-F-250
>> 
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>> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/
>> group/NEDRA)
>> 
>> 
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> 

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Re: [EVDL] Need help with Series Wound Dc motor controller.

2018-02-08 Thread Marco Gaxiola via EV 
You can learn from this guy who designed his own controller some time ago,
now he runs his own brand a some great products:
http://zeva.com.au/Research/ControllerDesign/

But I can tell you from own experience: Designing your own stuff, like a
high power motor controller is not a Cheap thing. You will require lots of
trial and error, learn and explode lots of MOSFets or IGBTs and that
requires time & money, but satisfaction once your prototype is running
smooth and nice is huge.

If you are looking for cheap stuff (Cost), then you can only choose one
more the two left: Time or Quality. But they'll never come all three
thogether.



On Thu, Feb 8, 2018 at 6:25 PM, John Lussmyer via EV 
wrote:

> On Thu Feb 08 14:38:19 PST 2018 ev@lists.evdl.org said:
> >Hi I am a hobbiest and started my first conversion, I have a car that I
> got retro fitted with a Series wound DC motor. I tested the car with
> batteries alone and it did move. I am designing a controller for the DC
> wound motor. I am running into a few issues with the controller. The
>
> One good place for controller building/design work is:
> > Evtech mailing list
> > evt...@lists.nnytech.net
> > http://lists.nnytech.net/listinfo/evtech
>
>
>
> --
>
> Worlds only All Electric F-250 truck! http://john.casadelgato.com/
> Electric-Vehicles/1995-Ford-F-250
>
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> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
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> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/
> group/NEDRA)
>
>
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[EVDL] Need help with Series Wound Dc motor controller.

2018-02-08 Thread John Lussmyer via EV 
On Thu Feb 08 14:38:19 PST 2018 ev@lists.evdl.org said:
>Hi I am a hobbiest and started my first conversion, I have a car that I got 
>retro fitted with a Series wound DC motor. I tested the car with batteries 
>alone and it did move. I am designing a controller for the DC wound motor. I 
>am running into a few issues with the controller. The 

One good place for controller building/design work is:
> Evtech mailing list
> evt...@lists.nnytech.net
> http://lists.nnytech.net/listinfo/evtech



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Worlds only All Electric F-250 truck! 
http://john.casadelgato.com/Electric-Vehicles/1995-Ford-F-250

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[EVDL] Need help with Series Wound Dc motor controller.

2018-02-08 Thread Basem Samarah via EV 
 Hi I am a hobbiest and started my first conversion, I have a car that I got 
retro fitted with a Series wound DC motor. I tested the car with batteries 
alone and it did move. I am designing a controller for the DC wound motor. I am 
running into a few issues with the controller. The controller got damaged but 
unfortunately, I am not sure what happened. I gave it to a friend for testing 
but I am not sure if he will be able to help. Is there someone in this forum 
who can help me with this? Is there a person that can help layout a board for 
relatively cheap? Is there any board manufacturers that I can use that are 
cheap but care about the human worker (I am willing to pay more, if I know they 
treat employees well)? 
Appreciate your help in advance. 
Thanks
Basem.
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