Power in Flux

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Type: Posts; User: tomdb

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    definitely worth the price. Good read, and indeed...

    definitely worth the price. Good read, and indeed focused on the true innovators in this field. A lot of the text gets backed up by real quotes and stories from people who where part of it.
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    Nice bms boards. Please be mindful of the face,...

    Nice bms boards. Please be mindful of the face, that when interfacing with the bq76 your micro will have to be tied to the pack negative (or atleast the negative of what ever bms board you are...
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    Currently working on a simple master bms board....

    Currently working on a simple master bms board. Will build a test setup once that is complete.
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    This is really good to know, now just need to get...

    This is really good to know, now just need to get my license.

    Now some good weather to get miles on it
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    I would just add the 208, since the power rating...

    I would just add the 208, since the power rating for those is already way more then plenty for the range of motors you have so far.
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    http://www.enstroj.si/Electric-products/emrax-200....

    http://www.enstroj.si/Electric-products/emrax-200.html

    Emrax 207, 80kw peaks at 9.4kg
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    I have bought a new inverter to use as the...

    I have bought a new inverter to use as the powerstage this time from a chevy volt / opel ampera.

    Two 600amp stages so it should be good enough for what ever motor I currently own. Took me some...
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    https://www.youtube.com/watch?v=pgPT-Rt6hKk ...

    https://www.youtube.com/watch?v=pgPT-Rt6hKk

    The Honda IMA stage kick up way to much EMC so looking for a true full metal cased inverter. Have a Rinehart pm100dxr laying around, but that will be...
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    Of course it does, I would say look at the way...

    Of course it does, I would say look at the way the arduino boards (or breadboard arduino's) are designed and copy that.
    Are you attempting to make a BMS based on the LTC6804 too?
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    Did some more playing with the controller. Got a...

    Did some more playing with the controller. Got a new motor today, deal was too good to pass up, a Lexus rx350h/rx400h rear motor.

    Did some playing with the controller, turns out that I set a...
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    Tested the controller with two packs in series to...

    Tested the controller with two packs in series to give me roughly 110V. Oh boy does this motor want to go now, need to ofcourse do some tuning on the motor controller combo once I am happy with...
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    Yes i am just feeding in 5v pwm signals (6, high...

    Yes i am just feeding in 5v pwm signals (6, high and low per phase) and tapping off the analogue output from the phase current sensors.

    Got a document with all my reverse engineering I did so far,...
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    Same story as my BMS, not alot of time and moving...

    Same story as my BMS, not alot of time and moving to a different country really takes time.
    However I got some time to setup my inverter and motor test bench again.

    This is not the same brain...
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    Running an endurance test right now unfortunately...

    Running an endurance test right now unfortunately the weakest link is still the tiny headers which interface with the 71s packs. these are three 2x5 headers with a pitch of 1.27mm. If this remains a...
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    Three times the fun

    Been busy soldering the other two balance boards, because the multi meter I had currently was a cheap one I decided to reward myself with a fluke 115 and a unitek clamp meter. This way I got some...
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    Gentlemen (and the occasional lady of-course), my...

    Gentlemen (and the occasional lady of-course), my last post stated I had taken a position in Sweden. This has unfortunately not worked out, miscommunication between the parties involved. However...
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    I would not listen to Jehu too much. He does not...

    I would not listen to Jehu too much. He does not really get some of the concepts when it comes to electric cars/electric batteries. Plus too much "drama" or opinions in his videos.

    However again,...
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    Did you have your motorcycle registered as an...

    Did you have your motorcycle registered as an electric?
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    CAD modeling/parts

    I have decided to start a thread about CAD model and or actual parts. I found a few parts that might be of intrest to other on grabcad, plus I have modeled some of my own.

    Also I like to make an...
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    Shit I forgot you are in Costa Rica. That would...

    Shit I forgot you are in Costa Rica. That would limit your wheel choices quite a bit. But is a honda vfr 750 rear wheel too big?
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    I would say add they heat sink under the motor,...

    I would say add they heat sink under the motor, cleaner I flow compared to on top. I would look into ducting both the in and outlet air by making some fiberglass ducts using foam. Air management is...
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    aprilia af1 125 honda VFR You searched for...

    aprilia af1 125

    honda VFR

    You searched for "single sided swingarm"?
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    An update, I got an opportunity to go do some...

    An update, I got an opportunity to go do some work in Sweden for NEVS (Owns Saab). This means that all my EV projects are on hold for now. I have had some guys, work on university projects ask for my...
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    so you have the "tesla" modules from the Smart...

    so you have the "tesla" modules from the Smart electric?

    http://www.evwest.com/catalog/product_info.php?cPath=4&products_id=329&osCsid=rvo1bvg93jp94qlq5idklr5fk0

    I hope you got them cheaper...
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    my 18 ohm balance resistor was indeed to small,...

    my 18 ohm balance resistor was indeed to small, even for testing. PCB is designed for 1206 smd resistors at 33 ohms which can be had in 1/2 watt package. At 3.65 volts that is 110 mA which results in...
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