New open source AC controller available

AC, DC, amps, volts and kilowatt. It's all discussed in here
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peskanov
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New open source AC controller available

Post by peskanov » Fri, 24 Jan 2014, 09:19

Hi,
I am posting this because I think it's really great news: A cheap 500V, 300A controller for AC!

It's not DTC or FOC, but I bet this will be available soon. Here it is:

http://johanneshuebner.com/quickcms/ind ... ts,18.html

Development was/is discussed in this thread:

http://www.diyelectriccar.com/forums/sh ... 45909.html

How sad I bought my Curtis a few month's ago...crap! Well, at least I know I will be able to afford something better in the future.

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jonescg
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New open source AC controller available

Post by jonescg » Fri, 24 Jan 2014, 16:34

A very informative website too! Not many places describe how inverters or VFDs work quite as clearly.
I challenge you to come up with a better invention than the bicycle

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Richo
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New open source AC controller available

Post by Richo » Fri, 24 Jan 2014, 21:01

Alarm bells are ringing Image Image Image
asking PCB gap sizing, how does a current sensor work...
Very concerning.
Open loop V/F - I'm sure he'll find out soon enough what that'll be like on the road...

I hope he really isn't expecting 240kW from it Image

Compare it to this: https://www.facebook.com/mauswerkz

Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

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peskanov
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New open source AC controller available

Post by peskanov » Sat, 25 Jan 2014, 01:00

Well, he has been driving his car recently. I guess it's not so terrible.
Anyway, I have experienced the difference between constant V/f and FOC control in my Quad. Constant V/f was ok in the road but very poor at low speeds; I guess it's better with gearing (we have direct transmission).

I am pretty sure there are better controllers in the works, but this one is available now and I think that's great news. I have not checked if the software is OS also. Implementing FOC or DTC woul be possible then.

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arber333
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New open source AC controller available

Post by arber333 » Thu, 29 Dec 2016, 05:13

Hi long time since ive been on this forum :).

Yeah this inverter looks like DIY project because Johannes is a software guy not a machinnist. But inverter works i can assure you with my 370Vdc 300A system that works now a year and cca 30kKm.

Heh once i even drove on 2 phases home due to my stupid mistake and transistor blown!!! Try that with other AC inverters.

My build is detailed here, but Johannes is still developing software for it.

https://mazdamx3ev.wordpress.com/tag/krmilnik/

try slovenian language translator... It has some interesting features. Check his/my site for progress.

A
Last edited by arber333 on Wed, 28 Dec 2016, 18:15, edited 1 time in total.

Stiive
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Re: New open source AC controller available

Post by Stiive » Wed, 16 Aug 2017, 12:48

Anyone looking to build a DIY 3-phase inverter - I have some brand new 600V 600A IGBT half-bridge modules for sale. These units would be perfect for a ~150kW+ motor controller.

Single qty:
http://www.ebay.com.au/itm/302416087242?

Box of 6:
http://www.ebay.com.au/itm/302416078271?

Also have matching 5uF/600V Kemet snubbers.
Rgds,
Stiive

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